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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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.