X0508 4 2025-11-28 1 0001849820 Nauticus Robotics, Inc. KITT 0001451505 Transocean Ltd. TURMSTRASSE 30 STEINHAUSEN V8 6312 SWITZERLAND false false false true Former 10% Owner 0 Common Stock, par value U.S. $0.0001 2025-11-28 4 S 0 28185 0.90 D 2122531 I By Transocean International Limited Common Stock, par value U.S. $0.0001 2025-12-01 4 S 0 61351 0.81 D 2061180 I By Transocean International Limited Common Stock, par value U.S. $0.0001 2025-12-02 4 S 0 32839 0.74 D 2028341 I By Transocean International Limited Common Stock, par value U.S. $0.0001 2025-12-03 4 S 0 2021920 1.02 D 6421 I By Transocean International Limited The amount of securities beneficially owned following the reported transaction includes 6,421 shares of the Issuer's common stock that the reporting person has the right to receive if, on or before September 9, 2027, the shares of the Issuer's common stock meet or exceed certain target prices as set forth in the Merger Agreement described in the reporting person's Form 3 filed on September 23, 2022. These securities are owned directly by Transocean International Limited, a Bermuda exempted company limited by shares. Transocean International Limited is a wholly owned subsidiary of Transocean Ltd. Because Transocean Ltd. controls Transocean International Limited, both Transocean Ltd. and Transocean International Limited are deemed to beneficially own the shares of common stock of the Issuer that Transocean International Limited holds directly or has a right to acquire. /s/ Daniel Ro-Trock by Power of Attorney 2025-12-04