Sec Form 3/A Filing - SHERIFF WILLIAM M @ enCore Energy Corp. - 2025-01-01

FORM 3/A 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 SHERIFF WILLIAM M 2. Issuer Name and Ticker or Trading Symbol enCore Energy Corp. [ EU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Executive Chairman (Last) (First) (Middle) 101 N. SHORELINE BLVD. SUITE 450 3. Date of Earliest Transaction (MM/DD/YY) 01/01/2025 (Street) CORPUS CHRISTI, TX78401 4. If Amendment, Date Original Filed (MM/DD/YY) 01/10/2025 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 2,879 I By spouse.

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 Stock Option (Right to Buy) $ 6.24 ( 2 ) ( 1 ) 05/26/2026 Common Stock 66,667 I See Footnote ( 3 ) Stock Option (Right to Buy) $ 4.03 ( 5 ) ( 4 ) 05/17/2028 Common Stock 50,000 I See Footnote ( 3 ) Stock Option (Right to Buy) $ 8.16 ( 7 ) ( 6 ) 06/13/2029 Common Stock 100,000 I See Footnote ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SHERIFF WILLIAM M 101 N. SHORELINE BLVD. SUITE 450 CORPUS CHRISTI, TX78401 X Executive Chairman Signatures /s/ Robert Willette, as attorney-in-fact for William M. Sheriff 01/30/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On May 26, 2021, Tintina Holdings, Ltd., a communications and community engagement consultant owned by the reporting person's spouse ("Tintina Holdings"), was granted 66,667 stock options of enCore Energy Corp. (the "Company") pursuant to the Company's Stock Option Plan. The stock options are fully vested and became exercisable in four equal installments beginning on May 26, 2021. During the year ended December 31, 2023, these options were assumed by 5 Spot Corporation, a communications and community engagement consultant owned by the reporting person's spouse ("5 Spot Corp.") in connection with the assignment of a consulting contract from Tintina Holdings to 5 Spot Corp. ( 2 )Represents an exercise price of $4.320 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.4435 reported by the Bank of Canada on January 29, 2025. ( 3 )These stock options are held by 5 Spot Corp., an entity owned by the reporting person's spouse. The reporting person disclaims beneficial ownership of such stock options except to the extent of his pecuniary interest therein. ( 4 )On May 17, 2023, Tintina Holdings was granted 50,000 stock options of the Company pursuant to the Company's Stock Option Plan. The stock options vested and became exercisable one-fourth on November 17, 2023, one-fourth on May 17, 2024 and one-fourth on November 17, 2024 and will vest and become exercisable one-fourth on May 17, 2025. During the year ended December 31, 2023, these options were assumed by 5 Spot Corp. in connection with the assignment of a consulting contract from Tintina Holdings to 5 Spot Corp. ( 5 )Represents an exercise price of $2.790 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.4435 reported by the Bank of Canada on January 29, 2025. ( 6 )On June 13, 2024, 5 Spot Corp. was granted 100,000 stock options of the Company pursuant to the Company's Stock Option Plan. The stock options vested and became exercisable one-fourth on December 13, 2024, and will vest and become exercisable one-fourth on June 13, 2025, one-fourth on December 13, 2025 and one-fourth on June 13, 2026. ( 7 )Represents an exercise price of $5.650 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.4435 reported by the Bank of Canada on January 29, 2025.

Remarks: This Form 3 is being amended to report certain holdings by the reporting person's spouse, attributable to the reporting person that were inadvertently omitted from the original filing.

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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