X0508 4 2025-10-28 0001849820 Nauticus Robotics, Inc. KITT 0001451505 Transocean Ltd. TURMSTRASSE 30 STEINHAUSEN V8 6312 SWITZERLAND false false true false 0 Common Stock, par value U.S. $0.0001 2025-10-28 4 C 0 2144295 1.76 A 2150716 I By Transocean International Limited Convertible Senior Secured Term Loan 2023 1.76 2025-10-28 4 C 0 3773958 0 D 2023-09-18 2026-09-18 Common Stock, par value U.S. $0.0001 2144295 0 I By Transocean International Limited 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 that Transocean International Limited holds directly or has a right to acquire. The amount reported also includes 6,421 additional shares (the "Earnout Shares") of the Issuer's common stock issuable to the Reporting Person on or before September 9, 2027, pursuant to certain earnout conditions, as described in the Merger Agreement (as defined in the Reporting Person's Form 3 filed on September 9, 2023). The shares of the Issuer's common stock reported herein as being beneficially owned by the Reporting Person consists of the Earnout Shares and 2,144,295 shares of the Issuer's common stock acquired on October 28, 2025 (the "Conversion Shares") by Transocean International Limited in connection with the exercise of its right to convert $3,000,000 of outstanding principal amount of loans, together with accrued interest (the "Note Conversion"), made pursuant to that certain Senior Secured Term Loan Agreement, dated as of September 18, 2023, by and among the Issuer, the collateral agent and the other lenders party thereto (as amended, the "Convertible Note"). Loans made pursuant to the Convertible Note were convertible into shares of the Issuer's common stock at a conversion price of $1.76 per share. /s/ Daniel Ro-Trock, Assistant Corporate Secretary 2025-10-31