X0609 4 2026-10-06 0 0001918080 Deep Isolation Nuclear, Inc. DBHL 0002080920 Parker Christopher Lombard false C/O DEEP ISOLATION NUCLEAR, INC. 5717 LEGACY DRIVE, STE 250, OFFICE 2079 PLANO TX 75024 0 1 0 0 CCO 0 Common Stock 2026-10-06 4 A 0 62500 0 A 79167 D Common Stock 581338 I By CS Transform Limited Stock Option (right to buy) 3.50 2026-10-06 4 A 0 100344 0 A 2036-09-29 Common Stock 100344 100344 D Represents a grant of restricted stock units ("RSUs") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon vesting. The RSUs shall vest as follows: 15,625 RSUs on each of September 29, 2027, September 29, 2028, September 29, 2029 and September 29, 2030, in each case subject to the Reporting Person's continued service through each vesting date. Represents a grant of non-qualified stock option pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. The option shall vest as follows: 25,086 option shares on September 29, 2027 and the remaining option shares in 36 monthly installments thereafter through September 29, 2030, in each case subject to the Reporting Person's continued service through each vesting date. The Reporting Person is a director and shareholder of CS Transform Limited and shares voting and investment power over the shares of common stock held thereby. /s/ Christopher Parker 2026-10-08