Vanguard Group Inc ownership in RIG / Transocean Ltd.

Transocean Ltd.

US ˙ NYSE ˙ CH0048265513

Security	RIG / Transocean Ltd.
Institution	Vanguard Group Inc
Latest Disclosed Ownership	68,551,328 shares
Ownership	8.47%

2024-02-13 - Vanguard Group Inc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 68,551,328 shares of Transocean Ltd. (US:RIG). This represents 8.47 percent ownership of the company. In their previous filing dated 2023-02-09 , Vanguard Group Inc had reported owning 63,405,047 shares, indicating an increase of 8.12 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2024-02-13	2024-02-13	13G/A	63,405,047	68,551,328	8.12	8.47	-3.53
2023-02-09	2023-02-09	13G/A	51,597,016	63,405,047	22.89	8.78	11.56
2022-02-10	2022-02-10	13G/A	55,618,830	51,597,016	-7.23	7.87	-12.94
2021-02-10	2021-02-10	13G/A	53,335,293	55,618,830	4.28	9.04	3.79
2020-02-12	2020-02-12	13G/A	48,849,557	53,335,293	9.18	8.71	8.74
2019-02-12	2019-02-12	13G/A	33,344,970	48,849,557	46.50	8.01	-5.99
2018-02-08	2018-02-08	13G/A	39,971,930	33,344,970	-16.58	8.52	-17.04
2017-02-10	2017-02-10	13G/A	36,439,874	39,971,930	9.69	10.27	2.60
2016-02-10	2016-02-10	13G/A	36,607,587	36,439,874	-0.46	10.01	-0.50
2015-12-10	2015-12-10	13G/A	30,229,895	36,607,587	21.10	10.06	20.62
2015-03-23	2015-03-23	13G/A		30,229,895		8.34
2015-02-10	2015-02-10	13G		24,247,294		6.69

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-01-29	2025-12-31	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	97,006,263	2,487,015	2.63	400,636	35.85	0.0058
2025-11-07	2025-09-30	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	94,519,248	15,315,289	19.34	294,900	43.76	0.0044
2025-08-11	2025-06-30	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	79,203,959	631,157	0.80	205,138	-17.64	0.0033
2025-05-09	2025-03-31	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	78,572,802	-239,061	-0.30	249,076	-15.72	0.0045
2025-02-11	2024-12-31	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	78,811,863	931,684	1.20	295,544	-10.71	0.0051
2024-11-13	2024-09-30	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	77,880,179	4,757,078	6.51	330,991	-15.39	0.0059
2024-08-13	2024-06-30	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	73,123,101	4,140,959	6.00	391,209	-9.69	0.0075
2024-05-10	2024-03-31	13F	TRANSOCEAN	REGISTERED SHS	H8817H100	68,982,142	429,950	0.63	433,208	-0.48	0.0086
2024-03-11	2023-12-31	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	68,552,192	4,107,956	6.37	435,306	-17.73	0.0095
2024-02-14	2023-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	68,552,192	4,107,956		435,306		0.0095
2023-12-18	2023-09-30	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	64,444,236	-638,209	-0.98	529,087	15.97	0.0130
2023-11-14	2023-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	64,444,236	-638,209		529,087		0.0023
2023-08-14	2023-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	65,082,445	-856,055	-1.30	456,228	8.79	0.0108
2023-07-14	2023-03-31	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	65,938,500	2,533,453	4.00	419,369	45.05	0.0107
2023-05-15	2023-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	65,937,636	2,532,589		419,363		0.0107
2023-02-10	2022-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	63,405,047	3,089,067	5.12	289,127	94.07	0.0079
2022-11-14	2022-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	60,315,980	5,165,717	9.37	148,981	-18.88	0.0044
2022-08-12	2022-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	55,150,263	2,444,581	4.64	183,650	-23.75	0.0052
2022-05-13	2022-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	52,705,682	1,108,666	2.15	240,865	69.14	0.0057
2022-02-14	2021-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	51,597,016	135,807	0.26	142,408	-26.98	0.0032
2021-11-12	2021-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	51,461,209	-2,711,875	-5.01	195,038	-20.35	0.0048
2021-08-13	2021-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	54,173,084	-3,686,713	-6.37	244,861	19.21	0.0061
2021-05-14	2021-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	57,859,797	2,240,967	4.03	205,402	59.87	0.0056
2021-02-12	2020-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	55,618,830	11,063,110	24.83	128,479	257.36	0.0037
2020-11-16	2020-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	44,555,720	-14,706,833	-24.82	35,952	-66.85	0.0012
2020-08-14	2020-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	59,262,553	3,318,036	5.93	108,450	67.12	0.0038
2020-05-15	2020-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	55,944,517	2,609,224	4.89	64,895	-82.31	0.0028
2020-02-14	2019-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	53,335,293	628,367	1.19	366,947	55.75	0.0125
2019-11-14	2019-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	52,706,926	-201,819	-0.38	235,599	-30.53	0.0087
2019-08-14	2019-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	52,908,745	1,352,823	2.62	339,145	-24.48	0.0128
2019-05-15	2019-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	51,555,922	2,706,365	5.54	449,052	32.46	0.0176
2019-02-14	2018-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	48,849,557	10,224,039	26.47	339,016	-37.08	0.0152
2018-12-13	2018-09-30	13F/A-2	TRANSOCEAN	REG SHS	H8817H100	38,625,518	118,330	0.31	538,826	4.11	0.0211
2018-11-23	2018-09-30	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	38,625,518	0		538,826		0.0211
2018-11-14	2018-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	38,625,518	118,330		538,826
2018-08-14	2018-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	38,507,188	767,118	2.03	517,537	38.52	0.0216
2018-05-15	2018-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	37,740,070	4,395,100	13.18	373,626	4.91	0.0163
2018-02-14	2017-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	33,344,970	276,141	0.84	356,124	0.09	0.0156
2017-11-14	2017-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	33,068,829	-5,028,291	-13.20	355,820	13.49	0.0166
2017-08-24	2017-06-30	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	38,097,120	-2,841,821	-6.94	313,539	-38.48	0.0154
2017-08-11	2017-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	38,097,120	-2,841,821		313,539
2017-05-12	2017-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	40,938,941	967,011	2.42	509,689	-13.49	0.0262
2017-02-14	2016-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	39,971,930	1,964,212	5.17	589,185	45.42	0.0329
2016-11-14	2016-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	38,007,718	2,838,559	8.07	405,162	-3.11	0.0238
2016-08-10	2016-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	35,169,159	5,238,910	17.50	418,160	52.86	0.0260
2016-05-13	2016-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	29,930,249	-6,509,625	-17.86	273,563	-39.36	0.0177
2016-02-08	2015-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	36,439,874	460,316	1.28	451,125	-2.95	0.0303
2015-11-12	2015-09-30	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	35,979,558	2,862,030	8.64	464,857	-12.92	0.0197
2015-11-12	2015-09-30	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	35,979,558	2,862,030		464,857		0.0197
2015-08-13	2015-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	33,117,528	1,167,123	3.65	533,854	13.90	0.0361
2015-05-15	2015-03-31	13F/A-1	TRANSOCEAN	REG SHS	H8817H100	31,950,405	7,703,111	31.77	468,712	5.46	0.0318
2015-05-14	2015-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	31,950,405			468,712
2015-02-12	2014-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	24,247,294	16,185,235	200.76	444,452	72.44	0.0320
2014-11-12	2014-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	8,062,059	117,412	1.48	257,744	-27.95	0.0201
2014-08-11	2014-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	7,944,647	109,632	1.40	357,748	10.45	0.0282
2014-05-13	2014-03-31	13F	TRANSOCEAN	REG SHS	H8817H100	7,835,015	82,058	1.06	323,899	-15.46	0.0272
2014-02-12	2013-12-31	13F	TRANSOCEAN	REG SHS	H8817H100	7,752,957	7,478,403	2,723.84	383,151	3,035.96	0.0337
2013-11-07	2013-09-30	13F	TRANSOCEAN	REG SHS	H8817H100	274,554	-19,225	-6.54	12,218	-13.27	0.0012
2013-08-13	2013-06-30	13F	TRANSOCEAN	REG SHS	H8817H100	293,779	293,779		14,087		0.0015

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.