Initial Statement of Beneficial Ownership - X-Energy, Inc.

This filing reports the initial beneficial ownership of X-Energy, Inc. (XE) by Amazon.com Inc. The filing indicates that Amazon.com NV Investment Holdings LLC, a subsidiary of Amazon.com, Inc., is the record holder of the securities. Specifically, Amazon.com Inc. holds 65,836,948 shares of Class A Common Stock, representing a ten percent or more ownership. The ownership is indirect. The filing is dated April 24, 2026, with the signature provided by Susan K. Jong, Vice President and Secretary.