Pumps and Pumping Equipment - Latest Activist Disclosures

This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2025-02-06 13D/A GRC / The Gorman-Rupp Company Gamco Investors, Inc. Et Al 764,900 2.90 9.46
2024-02-20 13D/A AP / Ampco-Pittsburgh Corporation 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford 986,580 4.90 -19.19
2024-02-14 13D GRC / The Gorman-Rupp Company Green Gayle Gorman 2,500,510 9.60 66.65
2024-02-14 13D GRC / The Gorman-Rupp Company Gorman Jeffrey S 2,750,842 10.50 58.30
2023-03-31 13D/A AP / Ampco-Pittsburgh Corporation Ancora Advisors, LLC 1,090,350 5.60 2.04
2022-11-28 13D/A AP / Ampco-Pittsburgh Corporation Louis Berkman Investment CO 4,196,219 20.40 15.13
2022-11-23 13D/A AP / Ampco-Pittsburgh Corporation Altor Fund II GP Ltd 0 0.00 -100.00
2022-11-22 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 3,127,113 15.17 14.15
2022-03-01 13D/A AP / Ampco-Pittsburgh Corporation Louis Berkman Investment CO 3,644,615 18.00 -0.00
2022-02-11 13D/A AP / Ampco-Pittsburgh Corporation Ancora Advisors, LLC 1,068,531 5.60
2022-01-07 13D AP / Ampco-Pittsburgh Corporation Ancora Advisors, LLC 1,068,531 5.60
2021-08-16 13D/A AP / Ampco-Pittsburgh Corporation Altor Fund II GP Ltd 1,776,604 13.90
2021-07-01 13D/A AP / Ampco-Pittsburgh Corporation 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford 1,220,888 6.37 -13.16
2021-04-09 13D/A AP / Ampco-Pittsburgh Corporation 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford 1,405,888 7.34 -27.85
2021-03-19 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 2,739,418 13.65 -10.96
2021-03-16 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 3,076,458 15.24 37.78
2021-02-01 13D/A AP / Ampco-Pittsburgh Corporation 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford 1,948,443 10.26 0.00
2020-10-06 13D/A AP / Ampco-Pittsburgh Corporation Louis Berkman Investment CO 3,644,616 18.70 177.59
2020-10-01 13D/A AP / Ampco-Pittsburgh Corporation 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford 1,948,443 10.26 185.70
2020-08-25 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 2,232,875 15.54 88.54
2020-08-17 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,184,317 9.25 5.34
2020-08-13 13D AP / Ampco-Pittsburgh Corporation 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford 682,000 5.33
2020-08-12 13D/A AP / Ampco-Pittsburgh Corporation Altor Holdings Ltd 1,776,604 13.90 0.00
2020-07-14 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,124,300 8.79 -4.53
2020-06-05 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,177,642 9.30 -9.08
2020-05-22 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,295,242 10.23 -4.01
2020-04-28 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,349,342 10.66 -2.86
2020-04-15 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,389,042 10.97 -2.61
2019-08-29 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,426,275 11.28 -2.22
2018-09-26 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,458,597 11.68 -3.07
2018-08-14 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,504,745 12.05 5.98
2018-04-10 13D/A AP / Ampco-Pittsburgh Corporation Louis Berkman Investment CO 1,312,929 10.60
2017-12-12 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,419,869 11.49 -9.61
2016-09-12 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,570,784 12.80 7.26
2016-04-01 13D AP / Ampco-Pittsburgh Corporation Altor Holdings Ltd 1,776,604 14.50
2016-03-22 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,464,455 11.99 -1.07
2015-06-01 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,480,328 14.20 4.40
2015-03-18 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,417,999 13.60
2014-12-24 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al
2014-12-18 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,315,087 12.61
2014-11-07 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,194,186 11.46
2014-06-18 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,162,444 11.18
2014-02-13 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,102,283 10.64
2014-01-30 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,085,533 10.48
2014-01-27 13D/A AP / Ampco-Pittsburgh Corporation Gamco Investors, Inc. Et Al 1,086,033 10.48
2012-10-03 13D/A FLS / Flowserve Corporation Relational Investors Llc 2,341,989 4.58
2012-09-19 13D/A GRC / The Gorman-Rupp Company Gamco Investors, Inc. Et Al 698,825 3.33
2012-06-25 13D FLS / Flowserve Corporation Relational Investors Llc 3,086,789 5.65