0002088896 2026-04-20 2026-04-20 0002088896 1 2026-04-20 2026-04-20 0002088896 2 2026-04-20 2026-04-20 iso4217:USD shares S-1 S-1/A EX-FILING FEES 333-294508 0002088896 X-Energy, Inc. N/A N/A S-1 X-Energy, Inc. true Equity Class A common stock true 44022556.10526 19.00 836428566.00 115510.78 true Equity Class A common stock true 5263157.8947 19.00 100000000.00 13810.00 936428566.00 129320.78 129320.78 0.00 0.00 Includes Class A common stock, par value $0.0001 per share ("Class A common stock"), issuable upon exercise of the underwriters' option to purchase additional Class A common stock, if any. The Registrant previously paid a registration fee of $115,510.78 in connection with the initial filing of Amendment No. 3 to the Registration Statement on Form S-1 on April 15, 2026. The fee was estimated solely for the purpose of calculating the registration fee in accordance with Rule 457(a) under the Securities Act of 1933, as amended (the "Securities Act"). Includes Class A common stock, issuable upon exercise of the underwriters' option to purchase additional Class A common stock, if any. The Registrant previously paid a registration fee of $13,810.00 in connection with the initial filing of the Registration Statement on Form S-1 on March 20, 2026. The fee was estimated solely for the purpose of calculating the registration fee in accordance with Rule 457(o) under the Securities Act. This Maximum Aggregate Offering Price was originally registered under 457(o) and is now converted to 457(a).