PTP / Platinum Underwriters Holdings Ltd - SEC-arkivering, Årsberetning, Fuldmagtserklæring

Platinum Underwriters Holdings Ltd
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SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Platinum Underwriters Holdings Ltd
SEC Filings (Chronological Order)
Denne side giver en komplet, kronologisk liste over SEC-arkiveringer, eksklusive ejerskabsregistreringer, som vi leverer andre steder.
February 9, 2017 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* PLATINUM UNDERWRITERS HLDGS (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2016 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 9, 2016 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* PLATINUM UNDERWRITERS HLDGS (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

March 13, 2015 15-12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-31341 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as

March 3, 2015 EX-99.25

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The New York Stock Exchange hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on March 16, 2015, pursuant to the provisions of Rule 12d2-2 (a).

March 2, 2015 8-K

Changes in Control of Registrant, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 2, 2015 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other Jurisdiction of Incorporatio

March 2, 2015 EX-10.2

STATEMENT OF AGREEMENT

EX-10.2 Exhibit 10.2 GUARANTY This GUARANTY (this “Guaranty”), dated as of March 2, 2015, is made by RENAISSANCERE HOLDINGS LTD., a Bermuda exempted company (“Guarantor”), in favor of the Guaranteed Parties (as hereinafter defined). Capitalized terms used herein without definition shall have the meanings given to them in the Credit Agreement (as defined below). RECITALS WHEREAS, Platinum Holdings,

March 2, 2015 EX-3.1

THE COMPANIES ACT 1981 MEMORANDUM OF ASSOCIATION OF COMPANY LIMITED BY SHARES (Section 7(1) and (2)) ALTERED MEMORANDUM OF ASSOCIATION Platinum Underwriters Holdings, Ltd. (hereinafter referred to as “the Company”) 1. The liability of the members of

EX-3.1 Exhibit 3.1 FORM NO. 2 BERMUDA THE COMPANIES ACT 1981 MEMORANDUM OF ASSOCIATION OF COMPANY LIMITED BY SHARES (Section 7(1) and (2)) ALTERED MEMORANDUM OF ASSOCIATION OF Platinum Underwriters Holdings, Ltd. (hereinafter referred to as “the Company”) 1. The liability of the members of the Company is limited to the amount (if any) for the time being unpaid on the shares respectively held by th

March 2, 2015 EX-10.4

STATEMENT OF AGREEMENT

EX-10.4 Exhibit 10.4 GUARANTY This GUARANTY (this “Guaranty”), dated as of March 2, 2015, is made by RENAISSANCERE HOLDINGS LTD., a Bermuda exempted company (the “RenRe Guarantor”), in favor of the Guaranteed Parties (as hereinafter defined). Capitalized terms used herein without definition shall have the meanings given to them in the Facility Agreement (as defined below). RECITALS WHEREAS, Platin

March 2, 2015 S-8 POS

PTP / Platinum Underwriters Holdings Ltd S-8 POS - - S-8 POS

S-8 POS As filed with the Securities and Exchange Commission on March 2, 2015 Registration No.

March 2, 2015 EX-10.1

CONSENT AND AMENDMENT TO CREDIT AGREEMENT

EX-10.1 Exhibit 10.1 CONSENT AND AMENDMENT TO CREDIT AGREEMENT This CONSENT AND AMENDMENT TO CREDIT AGREEMENT (this “Amendment”), dated as of March 2, 2015, is entered into by and among PLATINUM UNDERWRITERS HOLDINGS, LTD., a Bermuda exempted company (“Platinum Holdings”), the subsidiaries of Platinum Holdings party hereto (the “Subsidiary Credit Parties”), the Lenders party hereto, and WELLS FARG

March 2, 2015 EX-99.1

RENAISSANCERE COMPLETES ACQUISITION OF PLATINUM

EX-99.1 8 d884695dex991.htm EX-99.1 Exhibit 99.1 RENAISSANCERE COMPLETES ACQUISITION OF PLATINUM HAMILTON, BERMUDA, MARCH 2, 2015 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) announced today that the acquisition of the Company by RenaissanceRe Holdings Ltd. (NYSE: RNR) (“RenaissanceRe”) has been completed and Platinum is now a wholly owned subsidiary of Renaissa

March 2, 2015 S-8 POS

PTP / Platinum Underwriters Holdings Ltd S-8 POS - - S-8 POS

S-8 POS As filed with the Securities and Exchange Commission on March 2, 2015 Registration No.

March 2, 2015 S-8 POS

PTP / Platinum Underwriters Holdings Ltd S-8 POS - - S-8 POS

S-8 POS As filed with the Securities and Exchange Commission on March 2, 2015 Registration No.

March 2, 2015 EX-10.3

CONSENT AND AMENDMENT TO FACILITY AGREEMENT

EX-10.3 Exhibit 10.3 CONSENT AND AMENDMENT TO FACILITY AGREEMENT This CONSENT AND AMENDMENT TO FACILITY AGREEMENT (this “Consent and Amendment”), dated as of March 2, 2015, is entered into by and among PLATINUM UNDERWRITERS BERMUDA, LTD., a Bermuda company (“Borrower”), PLATINUM UNDERWRITERS HOLDINGS, LTD., a Bermuda company (“Guarantor”), ING BANK, N.V., as a lender, and NATIONAL AUSTRALIA BANK L

March 2, 2015 EX-3.2

BYE-LAWS Platinum Underwriters Holdings, Ltd. Platinum Underwriters Holdings, Ltd. Bye-Law Subject Page 1. Definitions and Interpretation 1 2. Registered Office 3 3. Share Rights 3 4. Modification of Rights 4 5. Shares 4 6. Certificates 5 7. Lien 5 8

EX-3.2 Exhibit 3.2 BYE-LAWS of Platinum Underwriters Holdings, Ltd. BYE-LAWS OF Platinum Underwriters Holdings, Ltd. Bye-Law Subject Page 1. Definitions and Interpretation 1 2. Registered Office 3 3. Share Rights 3 4. Modification of Rights 4 5. Shares 4 6. Certificates 5 7. Lien 5 8. Calls on Shares 6 9. Forfeiture of Shares 7 10. Register of Shareholders 8 11. Register of Directors and Officers

February 27, 2015 EX-99.1

PLATINUM SHAREHOLDERS OVERWHELMINGLY APPROVE ACQUISITION BY RENAISSANCERE

EX-99.1 Exhibit 99.1 PLATINUM SHAREHOLDERS OVERWHELMINGLY APPROVE ACQUISITION BY RENAISSANCERE HAMILTON, BERMUDA, FEBRUARY 27, 2015 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) announced today that at a special general meeting of shareholders held earlier today, all proposals related to the Company’s pending acquisition by RenaissanceRe Holdings Ltd. (NYSE: RNR)

February 27, 2015 8-K

Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2015 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other Jurisdiction of Incorpor

February 11, 2015 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / VANGUARD GROUP INC Passive Investment

platinumunderwritersholdings.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2 )* Name of issuer: Platinum Underwriters Holdings Ltd Title of Class of Securities: Common Stock CUSIP Number: G7127P100 Date of Event Which Requires Filing of this Statement: December 31, 201

February 11, 2015 10-K

PTP / Platinum Underwriters Holdings Ltd 10-K - Annual Report - PLATINUM UNDERWRITERS HOLDINGS, LTD 10-K 12-31-2014

10-K 1 form10k2014.htm PLATINUM UNDERWRITERS HOLDINGS, LTD 10-K 12-31-2014 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition

February 10, 2015 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. DECLARES QUARTERLY DIVIDEND AND A SPECIAL DIVIDEND IN CONNECTION WITH ITS ACQUISITION BY RENAISSANCERE HOLDINGS LTD.

EX-99.1 2 d867322dex991.htm EX-99.1 Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. DECLARES QUARTERLY DIVIDEND AND A SPECIAL DIVIDEND IN CONNECTION WITH ITS ACQUISITION BY RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, FEBRUARY 10, 2015 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) announced today that its Board of Directors has, subject to certain conditions,

February 10, 2015 425

PTP / Platinum Underwriters Holdings Ltd 425 - Merger Prospectus - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 10, 2015 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other Jurisdiction of Inc

February 10, 2015 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. DECLARES QUARTERLY DIVIDEND AND A SPECIAL DIVIDEND IN CONNECTION WITH ITS ACQUISITION BY RENAISSANCERE HOLDINGS LTD.

EX-99.1 Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. DECLARES QUARTERLY DIVIDEND AND A SPECIAL DIVIDEND IN CONNECTION WITH ITS ACQUISITION BY RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, FEBRUARY 10, 2015 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) announced today that its Board of Directors has, subject to certain conditions, declared a quarterly divide

February 10, 2015 8-K

Financial Statements and Exhibits, Other Events

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 10, 2015 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other Jurisdiction of Inc

February 5, 2015 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* PLATINUM UNDERWRITERS HLDGS (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2014 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 3, 2015 EX-99.2

RenaissanceRe Holdings Ltd. Page(s) Basis of Presentation i Financial Highlights 1 Income Statements a. Summary Consolidated Statements of Operations 2 - 3 b. Consolidated Segment Underwriting Results 4 - 5 c. Gross Premiums Written and Managed Premi

EX-99.2 3 rnrq42014financialsuppleme.htm COPY OF THE COMPANY'S FINANCIAL SUPPLEMENT RenaissanceRe Holdings Ltd. Contents Page(s) Basis of Presentation i Financial Highlights 1 Income Statements a. Summary Consolidated Statements of Operations 2 - 3 b. Consolidated Segment Underwriting Results 4 - 5 c. Gross Premiums Written and Managed Premiums 6 - 7 d. DaVinciRe Holdings Ltd. and Subsidiary Conso

February 3, 2015 EX-99.1

RenaissanceRe Reports Net Income of $170.8 Million for the Fourth Quarter of 2014 or $4.42 Per Diluted Common Share; Quarterly Operating Income of $140.3 Million or $3.62 Per Diluted Common Share Annual Net Income of $510.3 Million for 2014 or $12.60

RenaissanceRe Reports Net Income of $170.8 Million for the Fourth Quarter of 2014 or $4.42 Per Diluted Common Share; Quarterly Operating Income of $140.3 Million or $3.62 Per Diluted Common Share Annual Net Income of $510.3 Million for 2014 or $12.60 Per Diluted Common Share; Annual Operating Income of $468.9 Million or $11.56 Per Diluted Common Share Pembroke, Bermuda, February 3, 2015 - Renaissa

February 3, 2015 425

RNR / RenaissanceRe Holdings Ltd. 425 - Merger Prospectus - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 3, 2015 RenaissanceRe Holdings Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-14428 98-014-1974 (State or other jurisdiction of incorporation) (Commi

January 29, 2015 DEFM14A

PTP / Platinum Underwriters Holdings Ltd DEFM14A - - DEFM 14A

DEFM14A 1 d837877ddefm14a.htm DEFM 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (a

January 16, 2015 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES DATE OF SPECIAL SHAREHOLDER MEETING IN CONNECTION WITH ACQUISITION BY RENAISSANCERE HOLDINGS LTD.

EX-99.1 Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES DATE OF SPECIAL SHAREHOLDER MEETING IN CONNECTION WITH ACQUISITION BY RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, JANUARY 16, 2015 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) today announced that it has scheduled a special meeting of its shareholders for Friday, February 27, 2015, in connect

January 16, 2015 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES DATE OF SPECIAL SHAREHOLDER MEETING IN CONNECTION WITH ACQUISITION BY RENAISSANCERE HOLDINGS LTD.

EX-99.1 Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES DATE OF SPECIAL SHAREHOLDER MEETING IN CONNECTION WITH ACQUISITION BY RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, JANUARY 16, 2015 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) today announced that it has scheduled a special meeting of its shareholders for Friday, February 27, 2015, in connect

January 16, 2015 425

PTP / Platinum Underwriters Holdings Ltd 425 - Merger Prospectus - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2015 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other Jurisdiction of Inco

January 16, 2015 8-K

Financial Statements and Exhibits, Other Events

8-K 1 d852284d8k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2015 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other

November 26, 2014 425

RNR / RenaissanceRe Holdings Ltd. 425 - Merger Prospectus - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 26, 2014 (November 23, 2014) RenaissanceRe Holdings Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-14428 98-014-1974 (State or other jurisdi

November 26, 2014 EX-2.1

AGREEMENT AND PLAN OF MERGER by and among RENAISSANCERE HOLDINGS LTD., PORT HOLDINGS LTD. PLATINUM UNDERWRITERS HOLDINGS, LTD. Dated as of November 23, 2014 TABLE OF CONTENTS Page ARTICLE I THE MERGER Section 1.1 The Merger; Effective Time 1 Section

EX-2.1 2 d828223dex21.htm EX-2.1 Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER by and among RENAISSANCERE HOLDINGS LTD., PORT HOLDINGS LTD. and PLATINUM UNDERWRITERS HOLDINGS, LTD. Dated as of November 23, 2014 TABLE OF CONTENTS Page ARTICLE I THE MERGER Section 1.1 The Merger; Effective Time 1 Section 1.2 Closing 2 Section 1.3 Effects of the Merger 2 Section 1.4 Surviving Company Mem

November 25, 2014 425

RNR / RenaissanceRe Holdings Ltd. 425 - Merger Prospectus - FORM 8-K

425 1 d828112d8k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 25, 2014 (November 23, 2014) RenaissanceRe Holdings Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-14428 98-014-1974 (St

November 25, 2014 EX-99.1

Corrected Transcript

EX-99.1 Exhibit 99.1 Corrected Transcript 24-Nov-2014 RenaissanceRe Holdings Ltd. (RNR) Acquisition of Platinum Underwriters Holdings, Ltd by RenaissanceRe Holdings Ltd Call Total Pages: 16 1-877-FACTSET www.callstreet.com Copyright © 2001-2014 FactSet CallStreet, LLC RenaissanceRe Holdings Ltd. (RNR) Corrected Transcript Acquisition of Platinum Underwriters Holdings, Ltd by RenaissanceRe Holdings

November 24, 2014 EX-2.1

AGREEMENT AND PLAN OF MERGER by and among RENAISSANCERE HOLDINGS LTD., PORT HOLDINGS LTD. PLATINUM UNDERWRITERS HOLDINGS, LTD. Dated as of November 23, 2014 TABLE OF CONTENTS Page ARTICLE I THE MERGER Section 1.1 The Merger; Effective Time 1 Section

EX-2.1 Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER by and among RENAISSANCERE HOLDINGS LTD., PORT HOLDINGS LTD. and PLATINUM UNDERWRITERS HOLDINGS, LTD. Dated as of November 23, 2014 TABLE OF CONTENTS Page ARTICLE I THE MERGER Section 1.1 The Merger; Effective Time 1 Section 1.2 Closing 2 Section 1.3 Effects of the Merger 2 Section 1.4 Surviving Company Memorandum of Association and

November 24, 2014 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES ENTRY INTO A DEFINITIVE MERGER AGREEMENT WITH RENAISSANCERE HOLDINGS LTD.

EX-99.1 3 d826390dex991.htm EX-99.1 Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES ENTRY INTO A DEFINITIVE MERGER AGREEMENT WITH RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, NOVEMBER 24, 2014 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) announced today that it has entered into a definitive merger agreement with RenaissanceRe Holdings Ltd. (NYSE: R

November 24, 2014 EX-99.2

RenaissanceRe Holdings Ltd.

EX-99.2 RenaissanceRe Holdings Ltd. RenaissanceRe Agreed Acquisition of Platinum Underwriters Investor Presentation November 24, 2014 Exhibit 99.2 2 Disclaimer Information set forth in this presentation, including financial estimates and statements as to the expected timing, completion and effects of the proposed acquisition (the “Acquisition”) of Platinum Underwriters Holdings, Ltd. (“Platinum”)

November 24, 2014 425

RNR / RenaissanceRe Holdings Ltd. 425 - Merger Prospectus - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 24, 2014 (November 23, 2014) RenaissanceRe Holdings Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-14428 98-014-1974 (State or other jurisdic

November 24, 2014 EX-2.1

AGREEMENT AND PLAN OF MERGER by and among RENAISSANCERE HOLDINGS LTD., PORT HOLDINGS LTD. PLATINUM UNDERWRITERS HOLDINGS, LTD. Dated as of November 23, 2014 TABLE OF CONTENTS Page ARTICLE I THE MERGER Section 1.1 The Merger; Effective Time 1 Section

EX-2.1 Exhibit 2.1 EXECUTION VERSION AGREEMENT AND PLAN OF MERGER by and among RENAISSANCERE HOLDINGS LTD., PORT HOLDINGS LTD. and PLATINUM UNDERWRITERS HOLDINGS, LTD. Dated as of November 23, 2014 TABLE OF CONTENTS Page ARTICLE I THE MERGER Section 1.1 The Merger; Effective Time 1 Section 1.2 Closing 2 Section 1.3 Effects of the Merger 2 Section 1.4 Surviving Company Memorandum of Association and

November 24, 2014 425

PTP / Platinum Underwriters Holdings Ltd 425 - Merger Prospectus - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 24, 2014 (November 23, 2014) Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other

November 24, 2014 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 24, 2014 (November 23, 2014) Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State of other

November 24, 2014 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES ENTRY INTO A DEFINITIVE MERGER AGREEMENT WITH RENAISSANCERE HOLDINGS LTD.

EX-99.1 Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES ENTRY INTO A DEFINITIVE MERGER AGREEMENT WITH RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, NOVEMBER 24, 2014 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) (“Platinum” or the “Company”) announced today that it has entered into a definitive merger agreement with RenaissanceRe Holdings Ltd. (NYSE: RNR) (“RenaissanceRe”) under

November 24, 2014 EX-99.1

RenaissanceRe Holdings Ltd. to Acquire Platinum Underwriters in $1.9 Billion Transaction Expands Market Presence, Product Offerings and Client Relationships Accelerates Growth in U.S. Specialty and Casualty Reinsurance Business Transaction Accretive

EX-99.1 Exhibit 99.1 RenaissanceRe Holdings Ltd. to Acquire Platinum Underwriters in $1.9 Billion Transaction Expands Market Presence, Product Offerings and Client Relationships Accelerates Growth in U.S. Specialty and Casualty Reinsurance Business Transaction Accretive to RenaissanceRe’s Shareholders PEMBROKE, Bermuda, November 24, 2014 — RenaissanceRe Holdings Ltd. (NYSE: RNR) (“RenaissanceRe” o

October 22, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 form10q.htm PLATINUM UNDERWRITERS HOLDINGS, LTD 10-Q 9-30-2014 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2014 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transi

October 21, 2014 EX-10.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. AMENDED AND RESTATED CHANGE IN CONTROL SEVERANCE PLAN Effective October 21, 2014

EX-10.1 EXHIBIT 10.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. AMENDED AND RESTATED CHANGE IN CONTROL SEVERANCE PLAN Effective October 21, 2014 The Board of Directors of Platinum Underwriters Holdings, Ltd. (the “Company”) has determined that it is in the best interests of the Company and its shareholders to amend and restate the Platinum Underwriters Holdings, Ltd. Change in Control Severance Plan (as

October 21, 2014 EX-14.1

Introduction 3 No Retaliation Policy 3 Compliance with Laws and Platinum’s Policies 4 Conflicts of Interest 4 Presentation/Honorarium Guidelines 7

EX-14.1 EXHIBIT 14.1 CODE OF BUSINESS CONDUCT AND ETHICS October 21, 2014 1 To all Platinum Employees: Our success as a property and casualty reinsurance company is dependent upon our employees and our culture. In today’s business environment, it is critical that our clients and business partners have confidence and trust in Platinum. Ethical business practices help build a reputation that creates

October 21, 2014 EX-10.2

PLATINUM UNDERWRITERS HOLDINGS, LTD. AMENDED AND RESTATED 2010 SHARE INCENTIVE PLAN Effective October 21, 2014

EX-10.2 EXHIBIT 10.2 PLATINUM UNDERWRITERS HOLDINGS, LTD. AMENDED AND RESTATED 2010 SHARE INCENTIVE PLAN Effective October 21, 2014 1. PURPOSE OF THE PLAN The purpose of this Platinum Underwriters Holdings, Ltd. Amended and Restated 2010 Share Incentive Plan is to advance the interests of the Company and its shareholders by attracting, retaining and motivating key personnel upon whose judgment, in

October 21, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendment to Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics, Financial Statements and Exhibits

8-K 1 htm50680.htm LIVE FILING UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 21, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or othe

October 15, 2014 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2014 FINANCIAL RESULTS

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2014 FINANCIAL RESULTS HAMILTON, BERMUDA, October 15, 2014 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $29.1 million and diluted earnings per common share of $1.12 for the quarter ended September 30, 2014. The results for the quarter include net premiums earned of $129.5 million, net favorab

October 15, 2014 EX-99.2

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Exhibit 99.2 Platinum Underwriters Holdings, Ltd. Financial Supplement September 30, 2014 (UNAUDITED) This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., including the Company's Annual Report on Form 10-K. Waterloo House 100 Pitts Bay Road Pembroke, HM 08 Bermuda K

October 15, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 15, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

July 24, 2014 EX-10.1

INVESTMENT MANAGEMENT AGREEMENT

Exhibit 10.1 INVESTMENT MANAGEMENT AGREEMENT THIS INVESTMENT MANAGEMENT AGREEMENT (“Agreement”) made as of the 22nd day of September, 2008 (“Commencement Date”) between Platinum Underwriters Holdings, Ltd. (the “Client”) and Hyperion Brookfield Asset Management, Inc. (“Hyperion”). WITNESSETH: WHEREAS, the Client desires to appoint Hyperion as the investment manager of the portion of the assets of

July 24, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2014 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriters

July 24, 2014 EX-10.2

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Exhibit 10.2 May 14, 2014 Via Federal Express Platinum Underwriters Bermuda, Ltd. Platinum Underwriters Holdings, Ltd. Waterloo House 100 Pitts Bay Road Pembroke HM08 Bermuda Attention: Mr. Mark Pickering Mr. Allan Decleir Re: Investment Management Agreement dated as of May 12, 2005 by and between Hyperion Capital Management, Inc. and Platinum Underwriters Bermuda, Ltd. and Investment Management A

July 24, 2014 EX-10.3

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Exhibit 10.3 May 28, 2014 Via Federal Express Platinum Underwriters Reinsurance, Inc. 140 Broadway Suite 4200 New York, New York 10005 Attention: General Counsel Re: Investment Management Agreement, dated as of May 12, 2005, by and between Hyperion Capital Management, Inc. and Platinum Underwriters Reinsurance, Inc. (as amended from time to time, the “Investment Management Agreement”) Dear Gentlem

July 22, 2014 EX-10.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. AMENDED AND RESTATED EXECUTIVE INCENTIVE PLAN Effective July 22, 2014

EX-10.1 EXHIBIT 10.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. AMENDED AND RESTATED EXECUTIVE INCENTIVE PLAN Effective July 22, 2014 Section 1. Purpose The purpose of this Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan is to attract, retain and motivate executive officers and other select senior officers of the Company by providing them with an opportunity to earn lo

July 22, 2014 EX-10.2

EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan

EX-10.2 EXHIBIT 10.2 EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan This EIP SHARE UNIT AWARD AGREEMENT (this “Award Agreement”) made as of this day of , 20 , between Platinum Underwriters Holdings, Ltd., a Bermuda company (the “Company”), and (the “Participant”), is made pursuant to the terms of the Company’s Amended and Restated

July 22, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 22, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483

July 16, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 16, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-3

July 16, 2014 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2014 FINANCIAL RESULTS

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2014 FINANCIAL RESULTS HAMILTON, BERMUDA, July 16, 2014 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $36.2 million and diluted earnings per common share of $1.34 for the quarter ended June 30, 2014. The results for the quarter include net premiums earned of $124.8 million, net favorable deve

July 16, 2014 EX-99.2

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Exhibit 99.2 Platinum Underwriters Holdings, Ltd. Financial Supplement June 30, 2014 (UNAUDITED) This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., including the Company's Annual Report on Form 10-K. Waterloo House 100 Pitts Bay Road Pembroke, HM 08 Bermuda Kennet

June 19, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – June 19, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction of incorp

April 24, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 ptp10qfirstquarter2014.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2014 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numb

April 24, 2014 8-K

Other Events, Submission of Matters to a Vote of Security Holders - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 22, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041648

April 16, 2014 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2014 FINANCIAL RESULTS

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2014 FINANCIAL RESULTS HAMILTON, BERMUDA, April 16, 2014 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $63.7 million and diluted earnings per common share of $2.27 for the quarter ended March 31, 2014. The results for the quarter include net premiums earned of $126.3 million, net favorable dev

April 16, 2014 EX-99.2

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Exhibit 99.2 Platinum Underwriters Holdings, Ltd. Financial Supplement March 31, 2014 (UNAUDITED) This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., including the Company's Annual Report on Form 10-K. Waterloo House 100 Pitts Bay Road Pembroke, HM 08 Bermuda Kenne

April 16, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – April 16, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-

April 10, 2014 EX-10.2

THIRD AMENDED AND RESTATED CREDIT AGREEMENT Schedule 1.1(a) Commitments and Notice Addresses Schedule 1.1(b) Borrowing Base Schedule 3.3 Existing Letters of Credit Schedule 5.4 Licenses Schedule 5.6 Unresolved Tax Claims Schedule 5.7 Subsidiaries Sch

Exhibit 10.2 LIST OF CONTENTS OF EXHIBITS AND SCHEDULES TO THE THIRD AMENDED AND RESTATED CREDIT AGREEMENT EXHIBITS Exhibit A Form of Note Exhibit B-1 Form of Notice of Borrowing Exhibit B-2 Form of Notice of Conversion/Continuation Exhibit C-1 Form of Syndicated Letter of Credit Exhibit C-2 Form of Participated Letter of Credit Exhibit D Form of Compliance Certificate Exhibit E Form of Assignment

April 10, 2014 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – April 9, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction of incorporation o

April 10, 2014 EX-10.1

Third Amended and Restated Credit Agreement, dated as of April 9, 2014, among Platinum Underwriters Holdings, Ltd., Platinum Underwriters Bermuda, Ltd., Platinum Underwriters Reinsurance, Inc., Platinum Underwriters Finance, Inc., the Lenders party thereto, ING Bank N.V. and National Australian Bank Limited, as Documentation Agents, U.S. Bank National Association, as Syndication Agent, and Wells Fargo Bank, National Association, as Administrative Agent.

Exhibit 10.1 Published Deal CUSIP: 72765VAD7 Revolving Facility CUSIP: 72765VAE5 THIRD AMENDED AND RESTATED CREDIT AGREEMENT among PLATINUM UNDERWRITERS HOLDINGS, LTD., The SUBSIDIARY CREDIT PARTIES Party Hereto, The LENDERS Party Hereto, ING BANK N.V., NATIONAL AUSTRALIA BANK LIMITED, as Documentation Agents, U.S. BANK NATIONAL ASSOCIATION, as Syndication Agent, and WELLS FARGO BANK, NATIONAL ASS

March 21, 2014 DEF 14A

- DEFINITIVE PROXY STATEMENT

Definitive Proxy Statement Table of Contents SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Pursuant to §240.

February 13, 2014 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10K

10-K 1 ptp201310k.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-31341 Plati

February 13, 2014 EX-21.1

Subsidiaries of Platinum Holdings

Exhibit 21.1 Subsidiaries of Platinum Holdings Subsidiary Jurisdiction of Incorporation Platinum Underwriters Bermuda, Ltd. .……………………… (100% owned by Platinum Holdings) Bermuda Platinum Regency Holdings ………..……………….……… (100% owned by Platinum Holdings) Ireland Platinum Underwriters Finance, Inc. ………………………... (100% owned by Platinum Regency Holdings) Delaware Platinum Underwriters Reinsurance, Inc.

February 11, 2014 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / VANGUARD GROUP INC Passive Investment

platinumunderwritersholdings.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1 )* Name of issuer: Platinum Underwriters Holdings Ltd Title of Class of Securities: Common Stock CUSIP Number: G7127P100 Date of Event Which Requires Filing of this Statement: December 31, 201

February 10, 2014 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* PLATINUM UNDERWRITERS HLDGS (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2013 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 4, 2014 EX-99.2

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EX-99.2 3 financialsupplementq42013.htm Exhibit 99.2 Platinum Underwriters Holdings, Ltd. Financial Supplement December 31, 2013 (UNAUDITED) This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., including the Company's Annual Report on Form 10-K. Waterloo House 100 P

February 4, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – February 4, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

February 4, 2014 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2013

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2013 HAMILTON, BERMUDA, February 4, 2014 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $48.6 million and diluted earnings per common share of $1.71 for the quarter ended December 31, 2013 and net income of $223.3 million and diluted earnin

January 13, 2014 8-K

Regulation FD Disclosure - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 13, 2014 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416

December 20, 2013 EX-10.1

.../s/ Gavin P. Collery................................... Name: Gavin P. Collery Title: SVP – Chief Financial Officer

EX-10.1 2 exhibit1.htm EX-10.1 EXHIBIT 10.1 1 North Wall Quay Dublin 1 Ireland T +353 1 622 2000 F +353 1 622 2222 Niall Tuckey Citibank Europe plc Director 1 North Wall Quay ILOC Product Dublin 1, Ireland Tel +353 (1) 622 7430 Fax +353 (1) 622 2741 [email protected] FROM: Citibank Europe plc (the “Bank”) TO: Platinum Underwriters Bermuda, Ltd. Platinum Underwriters Reinsurance, Inc. Platinum

December 20, 2013 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 19, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041

October 24, 2013 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 ptp10qthirdquarter2013.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2013 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File

October 16, 2013 EX-99.2

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Exhibit 99.2 Platinum Underwriters Holdings, Ltd. Financial Supplement September 30, 2013 (UNAUDITED) This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., including the Company's Annual Report on Form 10-K. Waterloo House 100 Pitts Bay Road Pembroke, HM 08 Bermuda K

October 16, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 16, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

October 16, 2013 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2013 FINANCIAL RESULTS

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2013 FINANCIAL RESULTS HAMILTON, BERMUDA, October 16, 2013 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $38.3 million and diluted earnings per common share of $1.32 for the quarter ended September 30, 2013. The results for the quarter include net premiums earned of $135.4 million, net favorab

July 25, 2013 8-K

Other Events - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 24, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483

July 25, 2013 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 ptp10qsecondquarter2013.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2013 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numb

July 17, 2013 EX-99.2

Financial Supplement

Exhibit 99.2 Financial Supplement Financial Information as of June 30, 2013 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., i

July 17, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 17, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-3

July 17, 2013 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2013 FINANCIAL RESULTS

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2013 FINANCIAL RESULTS HAMILTON, BERMUDA, July 17, 2013 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $49.9 million and diluted earnings per common share of $1.61 for the quarter ended June 30, 2013. The results for the quarter include net premiums earned of $142.9 million, net favorable deve

July 3, 2013 EX-10.2

UNCOMMITTED U.S.$125,000,000 FACILITY AGREEMENT dated 31 July 2012 as amended and restated on the Effective Date PLATINUM UNDERWRITERS BERMUDA, LTD. arranged by NATIONAL AUSTRALIA BANK LIMITED NATIONAL AUSTRALIA BANK LIMITED acting as Agent NATIONAL

EX-10.2 Exhibit 10.2 FINAL VERSION UNCOMMITTED U.S.$125,000,000 FACILITY AGREEMENT dated 31 July 2012 as amended and restated on the Effective Date for PLATINUM UNDERWRITERS BERMUDA, LTD. arranged by NATIONAL AUSTRALIA BANK LIMITED with NATIONAL AUSTRALIA BANK LIMITED acting as Agent and NATIONAL AUSTRALIA BANK LIMITED acting as Security Agent Ref: OE/WE Linklaters LLP CONTENTS CLAUSE PAGE SECTION

July 3, 2013 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 2, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041683 (State or other jurisdiction of inco

July 3, 2013 EX-10.1

Amendment and Restatement Agreement, dated July 2, 2013, relating to a Facility Agreement dated July 31, 2012 for Platinum Underwriters Bermuda, Ltd. made between Platinum Underwriters Holdings, Ltd., Platinum Underwriters Bermuda, Ltd., National Australia Bank Limited and ING Bank N.V.

EX-10.1 Exhibit 10.1 EXECUTION VERSION AMENDMENT AND RESTATEMENT AGREEMENT dated 2 JULY 2013 RELATING TO A FACILITY AGREEMENT DATED 31 JULY 2012 FOR PLATINUM UNDERWRITERS BERMUDA, LTD. with NATIONAL AUSTRALIA BANK LIMITED acting as Agent and NATIONAL AUSTRALIA BANK LIMITED acting as Security Agent Ref: OE Linklaters LLP CONTENTS CLAUSE PAGE 1. Definitions and interpretation 1 2. Conditions precede

April 26, 2013 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 ptp10qfirstquarter2013.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2013 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numb

April 25, 2013 8-K

Submission of Matters to a Vote of Security Holders - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 24, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041648

April 17, 2013 EX-99.2

Financial Supplement Financial Information as of March 31, 2013 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be r

Exhibit 99.2 Financial Supplement Financial Information as of March 31, 2013 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd.,

April 17, 2013 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2013 FINANCIAL RESULTS

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2013 FINANCIAL RESULTS HAMILTON, BERMUDA, April 17, 2013 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $86.5 million and diluted earnings per common share of $2.63 for the quarter ended March 31, 2013. The results for the quarter include net premiums earned of $126.9 million, net favorable dev

April 17, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – April 17, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-

April 12, 2013 DEFA14A

- PROXY STATEMENT DEFINITIVE ADDITIONAL MATERIALS

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Pursuant to §240.

March 22, 2013 DEF 14A

- DEFINITIVE PROXY STATEMENT

Definitive Proxy Statement Table of Contents SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant þ Filed by a party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Pursuant to §240.

March 18, 2013 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 14, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041648

February 15, 2013 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 x For the fiscal year ended December 31, 2012 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-31341 Platinum Underwriters Holdi

February 15, 2013 EX-10.13

PLAN DOCUMENTS PLATINUM UNDERWRITERS HOLDINGS LTD. NON-REGISTERED PENSION PLAN (NON-BERMUDIAN MEMBERS) For an employee, officer or director of the Employer who is not a Bermudian or spouse of a Bermudian or US person TRUST DEED

EX-10.13 2 exhibit1013.htm Exhibit 10.13 PLAN DOCUMENTS FOR PLATINUM UNDERWRITERS HOLDINGS LTD. NON-REGISTERED PENSION PLAN (NON-BERMUDIAN MEMBERS) For an employee, officer or director of the Employer who is not a Bermudian or spouse of a Bermudian or US person TRUST DEED THIS DEED is effective this 16th day of June 2005. BETWEEN: PLATINUM UNDERWRITERS HOLDINGS LTD. a company incorporated in and u

February 14, 2013 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / WELLINGTON MANAGEMENT GROUP LLP - DISCLOSURE DOCUMENT Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 10)* Platinum Underwriters Holdings, Ltd. (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2012 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

February 13, 2013 SC 13G

PTP / Platinum Underwriters Holdings Ltd / VANGUARD GROUP INC Passive Investment

platinumunderwritersholdings.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 0 )* Name of issuer: Platinum Underwriters Holdings Ltd Title of Class of Securities: Common Stock CUSIP Number: G7127P100 Date of Event Which Requires Filing of this Statement: December 31, 201

February 11, 2013 SC 13G

PTP / Platinum Underwriters Holdings Ltd / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G Passive Investment

SC 13G 1 rrd004.htm SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* PLATINUM UNDERWRITERS HLDGS (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2012 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desig

February 6, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – February 6, 2013 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

February 6, 2013 EX-99.2

Financial Supplement Financial Information as of December 31, 2012 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should b

Exhibit 99.2 Financial Supplement Financial Information as of December 31, 2012 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd

February 6, 2013 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2012

Exhibit 99.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2012 HAMILTON, BERMUDA, February 6, 2013 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $121.5 million and diluted earnings per common share of $3.67 for the quarter ended December 31, 2012 and net income of $327.2 million and earnings per

December 12, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 12, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041

December 12, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ESTIMATES PRELIMINARY NET NEGATIVE IMPACT FROM HURRICANE SANDY

EX-99.1 EXHIBIT 99.1 Contact: Kenneth A. Kurtzman 203-252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. ESTIMATES PRELIMINARY NET NEGATIVE IMPACT FROM HURRICANE SANDY HAMILTON, BERMUDA, DECEMBER 12, 2012 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today announced that it expects Hurricane Sandy will have a net negative impact of approximately $30 million on the Company’s results for the quarter

October 25, 2012 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2012 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriter

October 17, 2012 EX-99.2

Financial Supplement Financial Information as of September 30, 2012 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should

Exhibit 99.2 Financial Supplement Financial Information as of September 30, 2012 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Lt

October 17, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 17, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

October 17, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2012 FINANCIAL RESULTS

Exhibit 99.1 Contact: Kenneth A. Kurtzman (203) 252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2012 FINANCIAL RESULTS HAMILTON, BERMUDA, October 17, 2012 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $84.9 million and diluted earnings per common share of $2.54 for the quarter ended September 30, 2012. The results for the quarter include net pr

September 11, 2012 CORRESP

-

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda September 11, 2012 VIA EDGAR Mr. Jim B. Rosenberg Senior Assistant Chief Accountant Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Platinum Underwriters Holdings, Ltd. Form 10-K for the Fiscal Year Ended December 31, 2011 Filed on Feb

August 16, 2012 CORRESP

-

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda August 16, 2012 VIA EDGAR Mr. Joel N. Parker Accounting Branch Chief Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Platinum Underwriters Holdings, Ltd. Form 10-K for the Fiscal Year Ended December 31, 2011 Filed on February 21, 2012

July 31, 2012 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant - FORM 8-K

FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 31, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041683 (State or other jurisdiction of inc

July 31, 2012 EX-10.1

UNCOMMITTED U.S.$75,000,000 FACILITY AGREEMENT dated 31 July 2012 PLATINUM UNDERWRITERS BERMUDA, LTD. arranged by NATIONAL AUSTRALIA BANK LIMITED NATIONAL AUSTRALIA BANK LIMITED acting as Agent NATIONAL AUSTRALIA BANK LIMITED acting as Security Agent

EX-10.1 2 d388634dex101.htm UNCOMMITTED U.S.$75,000,000 FACILITY AGREEMENT DATED JULY 31, 2012 Exhibit 10.1 EXECUTION VERSION UNCOMMITTED U.S.$75,000,000 FACILITY AGREEMENT dated 31 July 2012 for PLATINUM UNDERWRITERS BERMUDA, LTD. arranged by NATIONAL AUSTRALIA BANK LIMITED with NATIONAL AUSTRALIA BANK LIMITED acting as Agent and NATIONAL AUSTRALIA BANK LIMITED acting as Security Agent Ref: OE/WE

July 26, 2012 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 ptp10qsecondquarter2012.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2012 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numb

July 23, 2012 8-K

Other Events - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 23, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483

July 18, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2012 FINANCIAL RESULTS

Exhibit 99.1 Contact: Kenneth A. Kurtzman (203) 252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2012 FINANCIAL RESULTS HAMILTON, BERMUDA, July 18, 2012 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $67.5 million and diluted earnings per common share of $1.97 for the quarter ended June 30, 2012. The results for the quarter include net premiums

July 18, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 secondquarter20128k.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 18, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorp

July 18, 2012 EX-99.2

Financial Supplement Financial Information as of June 30, 2012 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be re

Exhibit 99.2 Financial Supplement Financial Information as of June 30, 2012 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., i

April 27, 2012 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

10-Q 1 ptp10qfirstquarter2012.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2012 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numb

April 25, 2012 8-K

Submission of Matters to a Vote of Security Holders - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 24, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041648

April 18, 2012 EX-99.2

Financial Supplement Financial Information as of March 31, 2012 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be r

Exhibit 99.2 Financial Supplement Financial Information as of March 31, 2012 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd.,

April 18, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2012 FINANCIAL RESULTS

Exhibit 99.1 Contact: Kenneth A. Kurtzman (203) 252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2012 FINANCIAL RESULTS HAMILTON, BERMUDA, April 18, 2012 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $53.3 million and diluted earnings per common share of $1.49 for the quarter ended March 31, 2012. The results for the quarter include net premiums

April 18, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – April 18, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-

April 10, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON ESTIMATES FOR MAJOR CATASTROPHE LOSSES

EX-99.1 Contact: Kenneth A. Kurtzman 203-252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON ESTIMATES FOR MAJOR CATASTROPHE LOSSES HAMILTON, BERMUDA, April 10, 2012 — Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today announced that it expects major catastrophe losses will have a net negative impact of approximately $24.8 million on the Company’s results for the quarter ended March 31,

April 10, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 10, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S

March 23, 2012 DEF 14A

- DEFINITIVE PROXY STATEMENT

Table of Contents SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant þ Filed by a party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Pursuant to §240.

February 21, 2012 EX-10.37

PLATINUM ADMINISTRATIVE SERVICES, INC. 2 World Financial Center 225 Liberty Street, Suite 2300 New York, New York 10281-1008

Exhibit 10.37 PLATINUM ADMINISTRATIVE SERVICES, INC. 2 World Financial Center 225 Liberty Street, Suite 2300 New York, New York 10281-1008 October 27, 2010 Mr. Kenneth A. Kurtzman 2342 Mountain Crest Circle Thousand Oaks, California 91362 Dear Ken: This letter agreement (this “Letter Agreement”) amends and restates in its entirety the letter agreement between you and Platinum Administrative Servic

February 21, 2012 EX-10.36

February 22, 2006

Exhibit 10.36 February 22, 2006 Mr. Kenneth Kurtzman 2342 Mountain Crest Circle Thousand Oaks, CA 91362 USA Dear Ken: This will confirm our offer and your acceptance of the position of Executive Vice President and Chief Risk Officer with Platinum Administrative Services, Inc. (the “Company”). This offer of employment is contingent upon receipt and review of our criminal conviction record check. Yo

February 21, 2012 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

10-K 1 ptp201110k.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2011 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-31341 Plat

February 14, 2012 EX-10.1

EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan

EX-10.1 Exhibit 10.1 EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan This EIP SHARE UNIT AWARD AGREEMENT (this “Award Agreement”) made as of this day of , 20 , between Platinum Underwriters Holdings, Ltd., a Bermuda company (the “Company”), and (the “Participant”), is made pursuant to the terms of the Company’s Amended and Restated

February 14, 2012 EX-10.4

MARKET SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. 2010 Share Incentive Plan

EX-10.4 Exhibit 10.4 MARKET SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. 2010 Share Incentive Plan This MARKET SHARE UNIT AWARD AGREEMENT (this “Award Agreement”) made as of this day of , 20 (the “Date of Grant”) between Platinum Underwriters Holdings, Ltd., a Bermuda company (the “Company”), and (the “Participant”), is made pursuant to the terms of the Company’s 2010 Share Ince

February 14, 2012 SC 13G/A

PTP / Platinum Underwriters Holdings Ltd / WELLINGTON MANAGEMENT GROUP LLP - DISCLOSURE DOCUMENT Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9)* Platinum Underwriters Holdings, Ltd. (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2011 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

February 14, 2012 EX-10.2

EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan

EX-10.2 Exhibit 10.2 EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan This EIP SHARE UNIT AWARD AGREEMENT (this “Award Agreement”) made as of this day of , 20 , between Platinum Underwriters Holdings, Ltd., a Bermuda company (the “Company”), and (the “Participant”), is made pursuant to the terms of the Company’s Amended and Restated

February 14, 2012 8-K

Financial Statements and Exhibits, Other Events - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 14, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-041

February 14, 2012 EX-10.3

SUPPLEMENTAL EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan

EX-10.3 4 exhibit3.htm EX-10.3 Exhibit 10.3 SUPPLEMENTAL EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan This SUPPLEMENTAL EIP SHARE UNIT AWARD AGREEMENT (this “Award Agreement”) made as of this 14th day of February, 2012, between Platinum Underwriters Holdings, Ltd., a Bermuda company (the “Company”), and (the “Participant”), is ma

February 7, 2012 EX-99.2

Financial Supplement Financial Information as of December 31, 2011 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should b

Exhibit 99.2 Financial Supplement Financial Information as of December 31, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd

February 7, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2011

Exhibit 99.1 Contact: Kenneth A. Kurtzman (203) 252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2011 HAMILTON, BERMUDA, February 7, 2012 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $7.1 million and diluted earnings per common share of $0.19 for the quarter ended December 31, 2011 and a ne

February 7, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – February 7, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

January 27, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events - LIVE FILING

Platinum Underwriters Holdings, Ltd. (Form: 8-K) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 26, 2012 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416

January 27, 2012 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON ESTIMATES FOR CATASTROPHE LOSSES AND OTHER ITEMS

EX-99.1 EXHIBIT 99.1 Contact: Kenneth A. Kurtzman 203-252-5833 PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON ESTIMATES FOR CATASTROPHE LOSSES AND OTHER ITEMS HAMILTON, BERMUDA, January 26, 2012 — Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today announced that it expects losses from 2011 catastrophes will have a net negative impact of approximately $55.4 million on the Company’s fourth qua

October 28, 2011 EX-99.1

Financial Supplement Financial Information as of September 30, 2011 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should

EX-99.1 2 revisedfinsuppq32011.htm Exhibit 99.1 Financial Supplement Financial Information as of September 30, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by

October 28, 2011 8-K/A

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 28, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization)

October 28, 2011 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2011 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwr

October 18, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2011 FINANCIAL RESULTS

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS THIRD QUARTER 2011 FINANCIAL RESULTS HAMILTON, BERMUDA, October 18, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported a net loss of $53.5 million and a loss per common share of $1.43 for the quarter ended September 30, 2011. The results for the quarter include

October 18, 2011 EX-99.2

Financial Supplement Financial Information as of September 30, 2011 The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should

Exhibit 99.2 Financial Supplement Financial Information as of September 30, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Lt

October 18, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 18, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

October 12, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON LOSS ESTIMATES FOR 2011 CATASTROPHES

Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD.

October 12, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 11, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R

August 10, 2011 CORRESP

[PLATINUM UNDERWRITERS HOLDINGS, LTD. LETTERHEAD]

[PLATINUM UNDERWRITERS HOLDINGS, LTD. LETTERHEAD] August 10, 2011 VIA EDGAR Mr. Jim B. Rosenberg Senior Assistant Chief Accountant Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Platinum Underwriters Holdings, Ltd. Form 10-K for the Fiscal Year Ended December 31, 2010 Filed on February 18, 2011 File Number: 001-31341 Dear Mr. Rosenb

July 26, 2011 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2011 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriters

July 20, 2011 POS AM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PLATINUM UNDERWRITERS HOLDINGS, LTD. (Exact Name of Registrant as specified in

As filed with the United States Securities and Exchange Commission on July 20, 2011 Registration No.

July 19, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 19, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-3

July 19, 2011 EX-99.2

Financial Supplement Financial Information as of June 30, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It

Exhibit 99.2 Financial Supplement Financial Information as of June 30, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., i

July 19, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2011 FINANCIAL RESULTS

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS SECOND QUARTER 2011 FINANCIAL RESULTS HAMILTON, BERMUDA, July 19, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported a net loss of $20.4 million and a loss per common share of $0.55 for the quarter ended June 30, 2011. The results for the quarter include net pre

July 12, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 11, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S.

July 12, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON LOSS ESTIMATES FOR SECOND AND FIRST QUARTER 2011 CATASTROPHES

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON LOSS ESTIMATES FOR SECOND AND FIRST QUARTER 2011 CATASTROPHES HAMILTON, BERMUDA, July 11, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today announced that it expects losses from catastrophes in the second quarter of 2011 and increases to its loss estimates for catas

July 11, 2011 CORRESP

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda July 11, 2011 VIA EDGAR Mr. Jim B. Rosenberg Senior Assistant Chief Accountant Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Platinum Underwriters Holdings, Ltd. Form 10-K for the Fiscal Year Ended December 31, 2010 Filed on February

June 30, 2011 EX-10.4

Insurance Letters of Credit — Master Agreement

EXHIBIT 10.4 Insurance Letters of Credit — Master Agreement Form 3/CEP AGREEMENT DATED 30 June 2011 BETWEEN: (1) PLATINUM UNDERWRITERS REINSURANCE, INC. (“Platinum America”); AND (2) PLATINUM UNDERWRITERS BERMUDA, LTD. (“Platinum Bermuda”); AND (3) CITIBANK EUROPE PLC (“CEP”) whose offices and registered address are at 1 North Wall Quay, I.F.S.C., Dublin 1, Ireland PREAMBLE Subject to the satisfac

June 30, 2011 EX-10.1

SECOND AMENDED AND RESTATED CREDIT AGREEMENT PLATINUM UNDERWRITERS HOLDINGS, LTD., The SUBSIDIARY CREDIT PARTIES Party Hereto, The LENDERS Party Hereto, ING BANK N.V., LONDON BRANCH, as Documentation Agent, U.S. BANK NATIONAL ASSOCIATION, as Syndicat

EXHIBIT 10.1 Execution Version Syndicated CUSIP: 72765VAA3 SECOND AMENDED AND RESTATED CREDIT AGREEMENT among PLATINUM UNDERWRITERS HOLDINGS, LTD., The SUBSIDIARY CREDIT PARTIES Party Hereto, The LENDERS Party Hereto, ING BANK N.V., LONDON BRANCH, as Documentation Agent, U.S. BANK NATIONAL ASSOCIATION, as Syndication Agent, and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent $300,0

June 30, 2011 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) — June 24, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation

June 30, 2011 EX-10.3

Niall Tuckey Citibank Europe plc Vice President 1 North Wall Quay ILOC Product Dublin 1, Ireland Tel +353 (1) 622 7430 Fax +353 (1) 622 2741 [email protected]

EXHIBIT 10.3 Niall Tuckey Citibank Europe plc Vice President 1 North Wall Quay ILOC Product Dublin 1, Ireland Tel +353 (1) 622 7430 Fax +353 (1) 622 2741 [email protected] Date 30 June 2011 Platinum Underwriters Bermuda, Ltd. (“Platinum Bermuda”) The Belvedere Building 69 Pitts Bay Road, 2nd Floor Pembroke, HM08, Bermuda Platinum Underwriters Reinsurance, Inc. (“Platinum America”) 2 World Fina

June 30, 2011 EX-10.2

Schedules Schedule 1.1(a) Commitments and Notice Addresses Schedule 1.1(b) Borrowing Base Schedule 3.3 Existing Letters of Credit Schedule 5.4 Licenses Schedule 5.6 Unresolved Tax Claims Schedule 5.7 Subsidiaries Schedule 8.2 Indebtedness Schedule 8.

EXHIBIT 10.2 LIST OF CONTENTS OF EXHIBITS AND SCHEDULES TO THE SECOND AMENDED AND RESTATED CREDIT AGREEMENT Exhibits Exhibit A Form of Note Exhibit B-1 Form of Notice of Borrowing Exhibit B-2 Form of Notice of Conversion/Continuation Exhibit C-1 Form of Syndicated Letter of Credit Exhibit C-2 Form of Participated Letter of Credit Exhibit D Form of Compliance Certificate Exhibit E Form of Assignmen

April 29, 2011 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2011 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriter

April 28, 2011 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 27, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S

April 19, 2011 EX-99.2

Financial Supplement Financial Information as of March 31, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It

Exhibit 99.2 Financial Supplement Financial Information as of March 31, 2011 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd.,

April 19, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2011 FINANCIAL RESULTS

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2011 FINANCIAL RESULTS HAMILTON, BERMUDA, April 19, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported a net loss of $157.2 million and a loss per common share of $4.20 for the quarter ended March 31, 2011. The results for the quarter include net p

April 19, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – April 19, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-

April 11, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 11, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S

April 11, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. PROVIDES PRELIMINARY LOSS ESTIMATE FOR THE MARCH 11, 2011 TOHOKU EARTHQUAKE

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. PROVIDES PRELIMINARY LOSS ESTIMATE FOR THE MARCH 11, 2011 TOHOKU EARTHQUAKE HAMILTON, BERMUDA, April 11, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) announced today that it expects the Tohoku earthquake and related tsunami that struck the northeastern coast of Japan on March 11

March 25, 2011 DEF 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant þ Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Definitive Proxy Statement o Definitive Additional Materials o Soliciting Material Pursuant to §240.

March 23, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 22, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S

March 23, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON RECENT NATURAL CATASTROPHE EVENTS

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. COMMENTS ON RECENT NATURAL CATASTROPHE EVENTS HAMILTON, BERMUDA, March 22, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) announced today its preliminary loss estimates for the 2011 Australian floods and Cyclone Yasi and the 2011 New Zealand earthquake. The Company also reaffirmed

February 18, 2011 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2010 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-31341 Platinum Underwriters Hold

February 18, 2011 EX-10.14

PLAN DOCUMENTS Platinum Underwriters Holdings Ltd. (INTERNATIONAL PLAN) TRUST DEED

Exhibit 10.14 PLAN DOCUMENTS FOR Platinum Underwriters Holdings Ltd. (INTERNATIONAL PLAN) TRUST DEED - 1 - THIS DEED is made this 26 day of April 2007 BETWEEN: PLATINUM UNDERWRITERS HOLDINGS LTD. of "The Belvedere Building", 69 Pitts Bay Road, Hamilton HMOS, Bermuda hereinafter referred to as the "Employer", AND: COLONIAL PRIVATE TRUSTEE LIMITED a company incorporated in and under the laws of the

February 18, 2011 EX-10.12

Platinum Underwriters Reinsurance, Inc. Executive Retirement Savings Plan

Exhibit 10.12 Platinum Underwriters Reinsurance, Inc. Executive Retirement Savings Plan Effective: January 1, 2011 Table of Contents ARTICLE I INTRODUCTION 1 1.1 Introduction and Purpose 1 ARTICLE II DEFINITIONS 2 2.1 Account(s) 2 2.2 Affiliated Company 2 2.3 Benefit Distribution Date 2 2.4 Board of Directors 2 2.5 Change in Control 2 2.6 Code 3 2.7 Committee 3 2.8 Company 3 2.9 Compensation 3 2.1

February 16, 2011 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 16, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.

February 14, 2011 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8)* Platinum Underwriters Holdings, Ltd. (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2010 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

February 10, 2011 SC 13G

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.:0 )*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.:0 )* Name of issuer: PLATINUM UNDERWRITERS HOLDINGS LTD Title of Class of Securities: COMMON STOCK CUSIP Number: G7127P100 Date of Event Which Requires Filing of this Statement: December 31, 2010 Check the appropriate box to designate the rule pursuant to which this Sched

February 8, 2011 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – February 8, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

February 8, 2011 EX-99.2

Financial Supplement

Exhibit 99.2 Financial Supplement Financial Information as of December 31, 2010 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd

February 8, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2010

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE FOURTH QUARTER AND YEAR ENDED DECEMBER 31, 2010 HAMILTON, BERMUDA, FEBRUARY 8, 2011 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported a net loss of $17.7 million and a loss per common share of $0.46 for the quarter ended December 31, 2010 a

January 18, 2011 EX-10.2

[RENAISSANCERE LETTERHEAD]

EXHIBIT 10.2 EXECUTION COPY [RENAISSANCERE LETTERHEAD] January 17, 2011 Platinum Underwriters Bermuda, Ltd. Platinum Underwriters Reinsurance, Inc. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda Re: Referral Agreements with Renaissance Underwriting Managers Ltd. Ladies and Gentlemen: Reference is made to (i) that certain Referral Agreement (the “US Referral Agreement”), dated as of

January 18, 2011 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES RECENT SHARE REPURCHASES AND AGREEMENT TO PURCHASE OPTIONS ISSUED TO RENAISSANCERE HOLDINGS LTD.

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations 441-298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES RECENT SHARE REPURCHASES AND AGREEMENT TO PURCHASE OPTIONS ISSUED TO RENAISSANCERE HOLDINGS LTD. HAMILTON, BERMUDA, January 17, 2011 — Platinum Underwriters Holdings, Ltd. (NYSE: PTP) announced today that it repurchased 1,685,714 of its common shares for approximately $75.1 million

January 18, 2011 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 17, 2011 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R

January 18, 2011 EX-10.1

PURCHASE AGREEMENT

EXHIBIT 10.1 EXECUTION COPY PURCHASE AGREEMENT This PURCHASE AGREEMENT (this “Agreement”) dated as of January 17, 2011 by and among PLATINUM UNDERWRITERS HOLDINGS, LTD., a Bermuda company (the “Company”), RENAISSANCERE HOLDINGS LTD., a Bermuda Company (“RenRe”), and RENAISSANCE OTHER INVESTMENTS HOLDINGS II LTD., a Bermuda company (“Holdings”). RECITALS WHEREAS, RenRe owned an option which had pro

November 17, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. INCREASES LOSS ESTIMATE FOR NEW ZEALAND EARTHQUAKE

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. INCREASES LOSS ESTIMATE FOR NEW ZEALAND EARTHQUAKE HAMILTON, BERMUDA, NOVEMBER 17, 2010 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) announced today that, based on client and broker information, it has increased its estimate of losses, net of reinstatement premiums and retrocessional

November 17, 2010 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 17, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.

October 29, 2010 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2010 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwr

October 29, 2010 EX-10.1

EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan

Exhibit 10.1 EIP SHARE UNIT AWARD AGREEMENT Platinum Underwriters Holdings, Ltd. Amended and Restated Executive Incentive Plan This EIP SHARE UNIT AWARD AGREEMENT (this “Award Agreement”) made as of this day of , 20, between Platinum Underwriters Holdings, Ltd., a Bermuda company (the “Company”), and (the “Participant”), is made pursuant to the terms of the Company’s Amended and Restated Executive

October 28, 2010 EX-10.1

PLATINUM UNDERWRITERS BERMUDA, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda

EXHIBIT 10.1 PLATINUM UNDERWRITERS BERMUDA, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda October 27, 2010 Mr. Robert S. Porter Platinum Underwriters Bermuda, Ltd. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda Dear Robert: This letter agreement (this “Letter Agreement”) amends and restates in its entirety the letter agreement between you and Platinum Underwri

October 28, 2010 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 27, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R

October 28, 2010 EX-10.2

PLATINUM UNDERWRITERS REINSURANCE, INC. 2 World Financial Center 225 Liberty Street Suite 2300 New York, New York 10281-1008

EXHIBIT 10.2 PLATINUM UNDERWRITERS REINSURANCE, INC. 2 World Financial Center 225 Liberty Street Suite 2300 New York, New York 10281-1008 October 27, 2010 Ms. H. Elizabeth Mitchell Platinum Underwriters Reinsurance, Inc. 2 World Financial Center 225 Liberty Street, Suite 2300 New York, New York 10281-1008 Dear Liz: I am writing this letter (this “Letter Agreement”) to confirm the terms and conditi

October 20, 2010 EX-99.2

Financial Supplement Financial Information as of September 30, 2010 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only

Exhibit 99.2 Financial Supplement Financial Information as of September 30, 2010 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Lt

October 20, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE THIRD QUARTER 2010

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FINANCIAL RESULTS FOR THE THIRD QUARTER 2010 HAMILTON, BERMUDA, OCTOBER 20, 2010 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $93.7 million and diluted earnings per common share of $2.13 for the quarter ended September 30, 2010. The results for th

October 20, 2010 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 20, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

October 14, 2010 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 13, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction of (Commission

October 14, 2010 EX-10.1

PURCHASE AGREEMENT

Exhibit 10.1 EXECUTION COPY PURCHASE AGREEMENT This PURCHASE AGREEMENT (this “Agreement”) dated as of October 13, 2010 by and between PLATINUM UNDERWRITERS HOLDINGS, LTD., a Bermuda company (the “Company”), and THE TRAVELERS COMPANIES, INC., a Minnesota company (“Travelers”). RECITALS WHEREAS, Travelers owns an option which had provided a right to acquire up to 5,105,740 common shares, par value $

October 14, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES SHARE REPURCHASES FOR THE THIRD QUARTER OF 2010 AND AGREEMENT TO PURCHASE OPTIONS ISSUED TO THE TRAVELERS COMPANIES, INC.

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations 441-298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES SHARE REPURCHASES FOR THE THIRD QUARTER OF 2010 AND AGREEMENT TO PURCHASE OPTIONS ISSUED TO THE TRAVELERS COMPANIES, INC. HAMILTON, BERMUDA, October 14, 2010 — Platinum Underwriters Holdings, Ltd. (NYSE: PTP) announced today that it repurchased 2,228,611 of its common shares for ap

August 11, 2010 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q/A AMENDMENT NO. 1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q/A AMENDMENT NO. 1 x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2010 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Pla

July 26, 2010 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2010 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriters

July 23, 2010 EX-10.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda

EXHIBIT 10.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda July 22, 2010 Michael D. Price Platinum Underwriters Holdings, Ltd. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda Dear Michael: This letter agreement (the “Letter Agreement”) amends and restates in its entirety the letter agreement between you and Platinum Underwriters

July 23, 2010 EX-10.2

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda

EXHIBIT 10.2 PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda July 22, 2010 Mr. Michael E. Lombardozzi Platinum Underwriters Holdings, Ltd. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda Dear Michael: I am writing this letter (this “Letter Agreement”) to amend and restate the letter agreement between you and Platinum Underwriters H

July 23, 2010 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 22, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S.

July 20, 2010 EX-99.2

Financial Supplement

Exhibit 99.2 Financial Supplement Financial Information as of June 30, 2010 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd., i

July 20, 2010 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – July 20, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-3

July 20, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS RECORD FINANCIAL RESULTS FOR THE SECOND QUARTER 2010

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS RECORD FINANCIAL RESULTS FOR THE SECOND QUARTER 2010 HAMILTON, BERMUDA, JULY 20, 2010 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $124.1 million and diluted earnings per common share of $2.68 for the quarter ended June 30, 2010. The results for t

April 30, 2010 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) — April 29, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction of (Commission Fi

April 30, 2010 EX-10.2

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda

EXHIBIT 10.2 PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda April 29, 2010 Mr. James A. Krantz 3A Fairylands Road Pembroke HM06 Bermuda Dear Jim: This letter agreement (“Letter Agreement”) will confirm the agreements reached between Platinum Underwriters Holdings, Ltd. (the “Company”) and you regarding your retirement from and the termination of

April 30, 2010 EX-10.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda

EXHIBIT 10.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda April 29, 2010 Mr. Allan C. Decleir 8 Turks Head Lane Devonshire DV07 Bermuda Dear Allan: This letter agreement (“Letter Agreement”) will confirm the terms and conditions of your employment with Platinum Underwriters Holdings, Ltd. (the “Company”) following the Effective Date (as define

April 30, 2010 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2010 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriter

April 30, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES APPOINTMENT OF ALLAN C. DECLEIR AS CHIEF FINANCIAL OFFICER; BOARD OF DIRECTORS APPROVES INCREASE IN SHARE REPURCHASE PROGRAM AND DECLARES QUARTERLY DIVIDEND ON COMMON SHARES

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations 441-298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES APPOINTMENT OF ALLAN C. DECLEIR AS CHIEF FINANCIAL OFFICER; BOARD OF DIRECTORS APPROVES INCREASE IN SHARE REPURCHASE PROGRAM AND DECLARES QUARTERLY DIVIDEND ON COMMON SHARES HAMILTON, BERMUDA, April 29, 2010 - Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today announced that Al

April 29, 2010 S-8 POS

As filed with the Securities and Exchange Commission on April 29, 2010

As filed with the Securities and Exchange Commission on April 29, 2010 Registration No.

April 29, 2010 EX-10.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. 2010 SHARE INCENTIVE PLAN

Exhibit 10.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. 2010 SHARE INCENTIVE PLAN 1. PURPOSE OF THE PLAN The purpose of this Platinum Underwriters Holdings, Ltd. 2010 Share Incentive Plan is to advance the interests of the Company and its shareholders by attracting, retaining and motivating key personnel upon whose judgment, initiative and effort the successful conduct of the Company’s operations is lar

April 29, 2010 EX-3.2

AMENDED AND RESTATED BYE-LAWS OF PLATINUM UNDERWRITERS HOLDINGS, LTD. (as adopted by the Members on April 29, 2010)

Exhibit 3.2 AMENDED AND RESTATED BYE-LAWS OF PLATINUM UNDERWRITERS HOLDINGS, LTD. (as adopted by the Members on April 29, 2010) TABLE OF CONTENTS INTERPRETATION 1. Definitions SHARES 2. Power to Issue Shares 3. Power of the Company to Purchase its Shares 4. Rights Attaching to Shares 5. Calls on Shares 6. Prohibition on Financial Assistance 7. Forfeiture of Shares 8. Share Certificates 9. Fraction

April 29, 2010 S-8

As filed with the Securities and Exchange Commission on April 29, 2010

As filed with the Securities and Exchange Commission on April 29, 2010 Registration No.

April 21, 2010 EX-99.2

Financial Supplement

Exhibit 99.2 Financial Supplement Financial Information as of March 31, 2010 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the Securities and Exchange Commission by Platinum Underwriters Holdings, Ltd.,

April 21, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2010 FINANCIAL RESULTS

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS FIRST QUARTER 2010 FINANCIAL RESULTS HAMILTON, BERMUDA, April 21, 2010 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $15.4 million, or $0.32 per diluted common share, for the quarter ended March 31, 2010. The results for the quarter include net pre

April 21, 2010 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – April 21, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001-

March 29, 2010 DEF 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

def14a Table of Contents SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant þ Filed by a party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Definitive Proxy Statement o Definitive Additional Materials o Soliciting Material Pursuant to §240.

March 11, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES PRELIMINARY LOSS ESTIMATE FROM FIRST QUARTER 2010 CATASTROPHE EVENTS

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations 441-298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES PRELIMINARY LOSS ESTIMATE FROM FIRST QUARTER 2010 CATASTROPHE EVENTS HAMILTON, BERMUDA, March 11, 2010 — Platinum Underwriters Holdings, Ltd. (NYSE: PTP) announced today its initial loss estimate from first quarter 2010 catastrophe events that have occurred to date of approximately

March 11, 2010 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 11, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R.S

March 3, 2010 PRE 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant þ Filed by a party other than the Registrant o Check the appropriate box: þ Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Definitive Proxy Statement o Definitive Additional Materials o Soliciting Material Pursuant to §240.

February 24, 2010 EX-10.10

PLATINUM UNDERWRITERS HOLDINGS, LTD. SECTION 162(m) PERFORMANCE INCENTIVE PLAN Amended and Restated as of February 22, 2010

Exhibit 10.10 PLATINUM UNDERWRITERS HOLDINGS, LTD. SECTION 162(m) PERFORMANCE INCENTIVE PLAN as Amended and Restated as of February 22, 2010 Section 1. Purpose The purpose of this Platinum Underwriters Holdings, Ltd. Section 162(m) Performance Incentive Plan is to provide a means of determining both annual and long-term incentive compensation for certain of the Company’s executive officers in a ma

February 24, 2010 EX-21.1

Subsidiaries of Platinum Holdings

Exhibit 21.1 Subsidiaries of Platinum Holdings Subsidiary Jurisdiction of Incorporation Platinum Underwriters Bermuda, Ltd. .……………………... (100% owned by Platinum Underwriters Holdings, Ltd.) Bermuda Platinum Regency Holdings ………..……………….………. (100% owned by Platinum Underwriters Holdings, Ltd.) Ireland Platinum Underwriters Finance, Inc. ………………………... (100% owned by Platinum Regency Holdings) Delawar

February 24, 2010 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2009 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-31341 Platinum Underwriters Hold

February 23, 2010 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 22, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.

February 23, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES AN INCREASE IN ITS SHARE REPURCHASE PROGRAM, DECLARES A QUARTERLY DIVIDEND ON ITS COMMON SHARES AND ANNOUNCES CERTAIN MATTERS FOR CONSIDERATION AT ITS 2010 ANNUAL GENERAL MEETING OF SHAREHOLDERS

EXHIBIT 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. ANNOUNCES AN INCREASE IN ITS SHARE REPURCHASE PROGRAM, DECLARES A QUARTERLY DIVIDEND ON ITS COMMON SHARES AND ANNOUNCES CERTAIN MATTERS FOR CONSIDERATION AT ITS 2010 ANNUAL GENERAL MEETING OF SHAREHOLDERS HAMILTON, BERMUDA, FEBRUARY 22, 2010 – Platinum Underwriters Holdings, Ltd. (NYSE: PT

February 17, 2010 8-K

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – February 17, 2010 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 0

February 17, 2010 EX-99.2

Financial Supplement

Exhibit 99.2 Financial Supplement Financial Information as of December 31, 2009 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the SEC by Platinum Underwriters Holdings, Ltd., including the Company's Annu

February 17, 2010 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS RECORD YEAR ENDED DECEMBER 31, 2009 FINANCIAL RESULTS

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS RECORD YEAR ENDED DECEMBER 31, 2009 FINANCIAL RESULTS HAMILTON, BERMUDA, FEBRUARY 17, 2010 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $383.3 million, or a record $7.33 per diluted common share, for the year ended December 31, 2009. The results f

February 12, 2010 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7)* Platinum Underwriters Holdings, Ltd. (Name of Issuer) Common Stock (Title of Class of Securities) G7127P100 (CUSIP Number) December 31, 2009 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

December 9, 2009 CORRESP

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda December 9, 2009 VIA ELECTRONIC MAIL Mr. Jim B. Rosenberg Senior Assistant Chief Accountant Securities and Exchange Commission Division of Corporation Finance Mail Stop 4720 100 F Street, NE Washington, D.C. 20549 Re: Platinum Underwriters Holdings, Ltd. Form 10-K for the Fiscal Year Ended December

November 9, 2009 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported): November 9, 2009 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 001

November 9, 2009 EX-10.1

EXCESS OF LOSS RETROCESSION AGREEMENT BY AND BETWEEN PLATINUM UNDERWRITERS REINSURANCE, INC. PLATINUM UNDERWRITERS BERMUDA, LTD. DATED AS OF AUGUST 5, 2009

EXHIBIT 10.1 EXCESS OF LOSS RETROCESSION AGREEMENT BY AND BETWEEN PLATINUM UNDERWRITERS REINSURANCE, INC. (RETROCEDANT) and PLATINUM UNDERWRITERS BERMUDA, LTD. (RETROCESSIONAIRE) DATED AS OF AUGUST 5, 2009 ARTICLE 1 - BUSINESS COVERED This Agreement is to indemnify the Retrocedant in respect of the net excess liability as a result of any catastrophe loss or losses which may occur during the term o

November 9, 2009 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2009 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwr

October 29, 2009 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 29, 2009 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda 001-31341 98-0416483 (State or other jurisdiction (Commission (I.R

October 29, 2009 EX-10.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda

EXHIBIT 10.1 PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda October 29, 2009 Michael D. Price Platinum Underwriters Holdings, Ltd. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda Dear Michael: This letter (the “Letter Amendment”) amends the letter agreement between you and Platinum Underwriters Holdings, Ltd. (the “Company”) dated

October 21, 2009 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of Earliest Event Reported) – October 21, 2009 Platinum Underwriters Holdings, Ltd. (Exact name of registrant as specified in its charter) Bermuda (State or other jurisdiction of incorporation or organization) 00

October 21, 2009 EX-99.1

PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS RECORD FINANCIAL RESULTS FOR THE THIRD QUARTER ENDED SEPTEMBER 30, 2009

Exhibit 99.1 Contact: Lily Outerbridge Investor Relations (441) 298-0760 PLATINUM UNDERWRITERS HOLDINGS, LTD. REPORTS RECORD FINANCIAL RESULTS FOR THE THIRD QUARTER ENDED SEPTEMBER 30, 2009 HAMILTON, BERMUDA, October 21, 2009 – Platinum Underwriters Holdings, Ltd. (NYSE: PTP) today reported net income of $109.5 million, which is a record $2.10 per diluted common share, for the quarter ended Septem

October 21, 2009 EX-99.2

Financial Supplement

Exhibit 99.2 Financial Supplement Financial Information as of September 30, 2009 (UNAUDITED) The following supplement of information is provided to assist in your understanding of Platinum Underwriters Holdings, Ltd. This report is for informational purposes only. It should be read in conjunction with documents filed with the SEC by Platinum Underwriters Holdings, Ltd., including the Company's Ann

October 20, 2009 CORRESP

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08

PLATINUM UNDERWRITERS HOLDINGS, LTD. The Belvedere Building 69 Pitts Bay Road Pembroke HM08 Bermuda October 20, 2009 VIA ELECTRONIC MAIL Mr. Jim B. Rosenberg Senior Assistant Chief Accountant Securities and Exchange Commission Division of Corporation Finance Mail Stop 4720 100 F Street, NE Washington, D.C. 20549 Re: Platinum Underwriters Holdings, Ltd. Form 10-K for the Fiscal Year Ended December

July 29, 2009 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2009 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-31341 Platinum Underwriters

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