$RIG

$6.46 -$0.07 (1.07%) Close

$RIG Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 1.12B shares outstanding

Who owns RIG?

By type of holder

Institutions 88.6% Insiders 0.0% Everyone else 11.4%

Concentration Top 10 holders own 46.5%

Frederik W. Mohn 8.7% · BlackRock, Inc. 8.2%

Institutional ownership

88.6%

+7.4 pts vs last qtr

Institutional holders

537

-3 vs last qtr

Net shares bought

+82.3M

by institutions in Q2 2026

New / sold out

78 / 81

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

UBS Group AG +20.3M
Renaissance Technologies LLC +11.4M

Biggest sellers in Q2 2026

Marshall Wace, LLP −15.0M
Driehaus Capital Management LLC SOLD OUT −7.2M

Who is planning to sell?

Notices of proposed sale, last 12 months

$4.8M

8 notices from 5 people

Shares covered

988.5K

0.09% of the company

Arranged in advance

26%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Thigpen Jeremy D Director $2.16M
Brady Long Officer $1.17M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+161.6%

+11.28% a year

Each share's claim on the business

−61.8%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $375M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years54% 3–5 years6% 1–3 years16% Under 1 year25%

Quarterly turnover

16.0%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting RIG on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	91.9M	8.23%	+3.6M (+4.0%)	≤2021	0.0%
Shares held by quarter Peak holding91.9M (Q2'26) Change over 8 quarters+21.4M Share of the company8.230% BlackRock, Inc.'s full portfolio →
DF Dimensional Fund Advisors LP	51.0M	4.57%	+2.2M (+4.5%)	≤2021	0.1%
Shares held by quarter Peak holding51.0M (Q2'26) Change over 8 quarters+11.8M Share of the company4.570% Dimensional Fund Advisors LP's full portfolio →

BlackRock, Inc.

91.9M

% of company

8.23%

Change vs last qtr

+3.6M (+4.0%)

Held since

≤2021

Dimensional Fund Advisors LP

51.0M

% of company

4.57%

Change vs last qtr

+2.2M (+4.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Transocean Ltd., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting RIG on Form N-PORT; together they hold 13.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$156M	31.8M	2.85%	0.01%	June 30, 2026
VS Vanguard Small-Cap Index Fund Vanguard Index Funds	$113M	23.1M	2.06%	0.06%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$156M

% of company

2.85%

% of the fund

0.01%

As of

June 30, 2026

Vanguard Small-Cap Index Fund

Vanguard Index Funds

Position value

$113M

% of company

2.06%

% of the fund

0.06%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Transocean Ltd. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
FW Frederik W. Mohn 5%+ holder 13D · 8.8%	96.9M	8.68%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company8.680% Disclosed stake13D · 8.8% View the 13D/G filing →

Frederik W. Mohn

5%+ holder13D · 8.8%

96.9M

% of company

8.68%

Change vs last qtr

—

Held since

—

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