Significant Ownership of Transocean Ltd.

Signature - Title
/s/ Debra Kupferman - Debra Kupferman/Authorized Person
Location
Steinhausen, Switzerland
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by Transocean Ltd..

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Follow Transocean Ltd. and return when a new Schedule 13D/G filing changes the record on this page.

This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.

Significant Ownership of Transocean Ltd.

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VAL Valaris Limited Common Shares, $0.01 par value 18% $675,932,813 12,573,155 Transocean Ltd. 09 Feb 2026
KITT NAUTICUS ROBOTICS, INC. Common stock, par value $0.0001 per share 0.1% $9,182 6,421 Transocean Ltd. 28 Nov 2025

Schedules 13D/G Reported by Transocean Ltd.:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Filing Date
* An asterisk sign (*) next to the price indicates that the price is likely invalid.
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