Transocean Ltd.

RIG·NYSE·$6.48Share Price as of 11/2·$6BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/07/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202502/23/26 10-QQ3 ended 09/30/2510/30/25 10-QQ2 ended 06/30/2508/05/25

Disclosures

8-KCurrent report10/23/26 8-KCurrent report10/19/26 8-KCurrent report10/15/26 8-KCurrent report10/14/26 8-KCurrent report10/09/26

Prospectuses and Registrations

424B5Prospectus supplement09/26/25 424B5Prospectus supplement09/24/25 S-8Registration of securities for employees08/05/25 S-8 POSPost-effective amendment (S-8)07/05/24 S-3ASRAutomatic shelf registration07/01/24

Proxies

DEFA14AAdditional proxy materials10/14/26 DEFM14ADefinitive proxy (merger)10/14/26 DEFA14AAdditional proxy materials09/30/26 DEFA14AAdditional proxy materials07/01/26 DEFA14AAdditional proxy materials05/19/26

Ownership

Form 4Insider transaction07/07/26 Form 4Insider transaction05/27/26 Form 4Insider transaction05/27/26 Form 4Insider transaction05/27/26 Form 4Insider transaction05/27/26

Other

ARSAnnual report to shareholders03/31/26 ARSAnnual report to shareholders04/01/25 ARSAnnual report to shareholders03/26/24 ARSAnnual report to shareholders03/23/23 25-NSERemoval from listing01/30/23