Robert Thaddeus Vayda - 01 Mar 2026 Form 4 Insider Report for Transocean Ltd. (RIG)

Reporting relationship: EVP, Chief Financial Officer
Issuer ticker: RIG
Reported as of: 01 Mar 2026
Net transaction value: +$593,824
SEC form: 4
Accepted by SEC: 03 Mar 2026, 21:35:57 UTC
Prior SEC filing: 09 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Debra Kupferman by Power of Attorney

Key filing fact

Robert Thaddeus Vayda filed Form 4 for Transocean Ltd. (RIG) on 03 Mar 2026.

Key facts

This page summarizes Robert Thaddeus Vayda's Form 4 filing for Transocean Ltd. (RIG).
5 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 21:35.

Change

Previous filing in this sequence was filed on 09 Feb 2026.
Current net transaction value: +$593,824.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002022236 Primary reporting owner

Vayda Robert Thaddeus

Relationship: EVP, Chief Financial Officer
Address: 1414 ENCLAVE PARKWAY, HOUSTON
Signature: /s/ Debra Kupferman by Power of Attorney
Signature date: 03 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

RIG transaction

Registered Shares

Options Exercise

Transaction value: $112,444
Shares: +17,991
Change %: +6.9%
Price: $6.25
Shares after: 276,924
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F1

RIG transaction

Registered Shares

Options Exercise

Transaction value: $142,731
Shares: +22,837
Change %: +8.2%
Price: $6.25
Shares after: 299,761
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F2

RIG transaction

Registered Shares

Options Exercise

Transaction value: $136,750
Shares: +21,880
Change %: +7.3%
Price: $6.25
Shares after: 321,641
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F3

RIG transaction

Registered Shares

Options Exercise

Transaction value: $587,275
Shares: +93,964
Change %: +29%
Price: $6.25
Shares after: 415,605
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F4

RIG transaction

Registered Shares

Tax liability

Transaction value: $385,376
Shares: -62,970
Change %: -15%
Price: $6.12
Shares after: 352,635
Date: 03 Mar 2026
Ownership: Direct
Footnotes: F5

RIG holding

Registered Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 91
Date: 01 Mar 2026
Ownership: By Child
Footnotes: F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Restricted Units, which are 1-for-1 share equivalents, acquired on February 9, 2023, pursuant to the Issuer's long-term incentive plan. One third of such restricted units vested on March 1, 2026, resulting in the right of the reporting person to receive the registered shares.

Footnote F2

Restricted Units, which are 1-for-1 share equivalents, acquired on February 8, 2024, pursuant to the Issuer's long-term incentive plan. One third of such restricted units vested on March 1, 2026, resulting in the right of the reporting person to receive the registered shares. The remaining restricted share units vest as follows: 22,837 on March 1, 2027.

Footnote F3

Restricted Units, which are 1-for-1 share equivalents, acquired on May 16, 2024, pursuant to the Issuer's long-term incentive plan. One third of such restricted units vested on March 1, 2026, resulting in the right of the reporting person to receive the registered shares. The remaining restricted share units vest as follows: 21,880 on March 1, 2027.

Footnote F4

Restricted Units, which are 1-for-1 share equivalents, acquired on February 13, 2025, pursuant to the Issuer's long-term incentive plan. One third of such restricted units vested on March 1, 2026, resulting in the right of the reporting person to receive the registered shares. The remaining restricted share units vest as follows: 93,965 on March 1, 2027 and 93,965 on March 1, 2028.

Footnote F5

Shares sold upon vesting to satisfy tax withholding obligations.

Footnote F6

The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.