Sec Form 3 Filing - Spring Valley Acquisition Sponsor II, LLC @ Eagle Nuclear Energy Corp. - 2026-02-24

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Spring Valley Acquisition Sponsor II, LLC 2. Issuer Name and Ticker or Trading Symbol Eagle Nuclear Energy Corp. [ NUCL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 2100 MCKINNEY AVE., SUITE 1675 3. Date of Earliest Transaction (MM/DD/YY) 02/24/2026 (Street) DALLAS, TX75201 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 2,408,335 ( 1 ) D ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Private Warrants $ 11.5 ( 3 ) ( 4 ) Common Stock 9,422,133 ( 5 ) D ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Spring Valley Acquisition Sponsor II, LLC 2100 MCKINNEY AVE., SUITE 1675 DALLAS, TX75201 X Sorrells Christopher Dixon 2100 MCKINNEY AVE., SUITE 1675 DALLAS, TX75201 X Signatures Spring Valley Acquisition Sponsor II, LLC, By: /s/ Christopher Sorrells Name: Christopher Sorrells Title: Manager 03/19/2026 Signature of Reporting Person Date /s/ Christopher Sorrells 03/19/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to that certain Amended and Restated Agreement and Plan of Merger (the "Merger Agreement"), dated as of September 29, 2025, by and among Eagle Nuclear Energy Corp. (the "Issuer"), Spring Valley Acquisition Corp. II ("SVII"), Eagle Energy Metals Corp., Spring Valley Merger Sub III, Inc., and Spring Valley Merger Sub II, Inc., Spring Valley Acquisition Sponsor II, LLC (the "Sponsor") received 2,408,335 of the Issuer's common stock, par value $0.01 per share ("Common Stock"), in exchange for the 2,408,335 SVII Class B founder shares, par value $0.001 per share, that the Sponsor held, prior to the effective time of the merger. ( 2 )The reported securities are held directly by the Sponsor. The Sponsor is controlled by Mr. Christopher Sorrells. Accordingly, all of the shares held by the Sponsor may be deemed to be beneficially held by Mr. Sorrells. Each reporting person under this Form 3 disclaims beneficial ownership of the reported securities except to the extent of their respective pecuniary interest therein and the filing of this Form 3 shall not be construed as an admission that any such reporting person is the beneficial owner of any such securities. ( 3 )Each warrant will become exercisable on March 26, 2026. ( 4 )Each warrant will expire on February 24, 2031, or earlier upon redemption. ( 5 )Pursuant to the Merger Agreement, the Sponsor received (i) 1,500,000 of the Issuer's private warrants in settlement of outstanding working capital loans; (ii) 922,133 additional private warrants pursuant to a Sponsor Agreement related to the Merger Agreement; and (iii) 7,000,000 private warrants in exchange for 7,000,000 SVII warrants at an exercise price of $11.50 per share, that the Sponsor held.

Remarks: This Form 3/A amends the Form 3 filing dated March 4, 2026 (the "Original Form 3") to remove Pearl Energy Investments II, L.P., Pearl Energy Investment II GP, L.P. and Pearl Energy Investment II UGP, LLC as Reporting Persons, and add Mr. Christopher Sorrells as a Reporting Person. This Form 3/A also updated the ownership form of the common stock and private warrants reported herein. Other than these changes, this form contains no amendment to the Original Form 3.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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