0002088896 2026-04-23 2026-04-23 0002088896 1 2026-04-23 2026-04-23 iso4217:USD pure shares S-1 S-1MEF EX-FILING FEES 333-294508 0002088896 X-Energy, Inc. N/A N/A S-1 X-Energy, Inc. false Equity Class A common stock true 1607143 23.00 36964289.00 0.0001381 5104.77 36964289.00 5104.77 0.00 0.00 5104.77 Represents only the additional number of shares of Class A common stock being registered and includes additional shares of Class A common stock that the underwriters have the option to purchase. Does not include the securities that the Registrant previously registered on the Registration Statement on Form S-1, as amended (File No. 333-294508). Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(a) under the Securities Act of 1933, as amended (the "Securities Act"). The Registrant previously paid an aggregate filing fee of $129,320.78 for the Registration Statement on Form S-1, as amended (File No. 333-294508). In accordance with Rule 462(b) under the Securities Act of 1933, as amended, an additional amount of securities having a proposed maximum offering price per unit of $23.00 are hereby registered, which includes the additional shares that the underwriters have the option to purchase.