# EDGAR Filing Document

**Accession Number:** 0001500881
**File Stem:** 0001193125-26-170351
**Filing Date:** 2026-4
**Character Count:** 14049
**Document Hash:** ffa1c324a04ff5e7790e318980244b73
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-170351.hdr.sgml**: 20260422

**ACCESSION NUMBER**: 0001193125-26-170351

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260420

**FILED AS OF DATE**: 20260422

**DATE AS OF CHANGE**: 20260422

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** SHERIFF WILLIAM M
- **CENTRAL INDEX KEY:** 0001229379

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41489
- **FILM NUMBER:** 26883714
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** enCore Energy Corp.
- **CENTRAL INDEX KEY:** 0001500881
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS METAL ORES [1090]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** ONE GALLERIA TOWER
- **STREET 2:** 13355 NOEL RD, SUITE 1700
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75240
- **BUSINESS PHONE:** 361-239-5449

**MAIL ADDRESS:**
- **STREET 1:** ONE GALLERIA TOWER
- **STREET 2:** 13355 NOEL RD, SUITE 1700
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75240

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Encore Energy Corp.
- **DATE OF NAME CHANGE:** 20170301

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WOLFPACK GOLD CORP.
- **DATE OF NAME CHANGE:** 20130523

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TIGRIS URANIUM CORP.
- **DATE OF NAME CHANGE:** 20100908

## Ex-24

**POWER OF ATTORNEY**

Know all by these presents, that the undersigned hereby constitutes and appoints Robert W. Hudson Jr., signing singly, the undersigned's true and lawful attorney-in-fact to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or director of enCore Energy Corp. (the "Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5, complete and execute any amendment or amendments thereto, and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in- fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.

The execution by the undersigned of this Power of Attorney hereby expressly revokes and terminates any powers of attorney previously granted by the undersigned relating to Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company. This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of April 20, 2026.

---

| |
|:---|
| /s/ William M. Sheriff |
| William M. Sheriff |

---

------

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>SHERIFF WILLIAM M<br><sub>(Last) (First) (Middle)</sub><br>ONE GALLERIA TOWER<br>13355 NOEL RD, SUITE 1700<br><sub>(Street)</sub><br>DALLAS, TX 75240<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>enCore Energy Corp. [ EU ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-04-20 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Executive Chairman_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Stock | 1337169 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Stock Option (Right to Buy) | <sup>(1)</sup> | 2027-02-14 | Common Stock | 366667 | 3.07<sup>(2)</sup> | D |  |
| Stock Option (Right to Buy) | <sup>(3)</sup> | 2028-05-17 | Common Stock | 350000 | 2.04<sup>(4)</sup> | D |  |
| Stock Option (Right to Buy) | <sup>(5)</sup> | 2029-06-13 | Common Stock | 325000 | 4.14<sup>(6)</sup> | D |  |
| Stock Option (Right to Buy) | <sup>(7)</sup> | 2028-09-24 | Common Stock | 320000 | $3.10 | D |  |
| Restricted Stock Unit | <sup>(8)</sup> | <sup>(8)</sup> | Common Stock | 482589 | <sup>(9)</sup> | D |  |
| Stock Option (Right to Buy) | <sup>(10)</sup> | 2026-05-26 | Common Stock | 66667 | 3.16<sup>(11)</sup> | I | See Footnote<sup>(12)</sup> |
| Stock Option (Right to Buy) | <sup>(13)</sup> | 2028-05-17 | Common Stock | 50000 | 2.04<sup>(14)</sup> | I | See Footnote<sup>(12)</sup> |
| Stock Option (Right to Buy) | <sup>(15)</sup> | 2029-06-13 | Common Stock | 100000 | 4.14<sup>(16)</sup> | I | See Footnote<sup>(12)</sup> |
| Stock Option (Right to Buy) | <sup>(17)</sup> | 2030-10-08 | Common Stock | 30000 | $3.47 | I | See Footnote<sup>(12)</sup> |
| Restricted Stock Unit | <sup>(18)</sup> | <sup>(18)</sup> | Common Stock | 102500 | <sup>(9)</sup> | I | See Footnote<sup>(12)</sup> |

---

### Footnotes:

(1) On February 14, 2022, the reporting person was granted 366,667 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 August 14, 2022, which was the six-month anniversary of the date on which the stock options were granted.

(2) Represents an exercise price of $4.200 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.366 reported by the Bank of Canada on April 20, 2026.

(3) On May 17, 2023, the reporting person was granted 350,000 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, one-fourth on November 17, 2024 and one-fourth on May 17, 2025.

(4) 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$1.366 reported by the Bank of Canada on April 20, 2026.

(5) On June 13, 2024, the reporting person was granted 325,000 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, one-fourth on June 13, 2025 and one-fourth on December 13, 2025, and will vest and become exercisable one-fourth on June 13, 2026.

(6) 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$1.366 reported by the Bank of Canada on April 20, 2026.

(7) On September 24, 2025, the reporting person was granted 320,000 stock options of the Company pursuant to the Company's Long Term Incentive Plan. The stock options vested and became exercisable one-fourth on March 24, 2026, and will vest and become exercisable one-fourth on September 24, 2026, one-fourth on March 24, 2027 and one-fourth on September 24, 2027.

(8) On October 8, 2025, the reporting person was granted 482,589 restricted stock units. The restricted stock units vest one-third on October 8, 2026, one-third on October 8, 2027 and one-third on October 8, 2028.

(9) Each restricted stock unit represents the contingent right to receive one common share of enCore Energy Corp.

(10) 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 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.

(11) 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$1.366 reported by the Bank of Canada on April 20, 2026.

(12) 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.

(13) 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, one-fourth on November 17, 2024 and 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.

(14) 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$1.366 reported by the Bank of Canada on April 20, 2026.

(15) 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, one-fourth on June 13, 2025 and one-fourth on December 13, 2025, and will vest and become exercisable one-fourth on June 13, 2026.

(16) 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$1.366 reported by the Bank of Canada on April 20, 2026.

(17) On October 8, 2025, the reporting person was indirectly granted 30,000 stock options. The stock options vested and became exercisable one-fourth April 8, 2026, and will vest and become exercisable one-fourth October 8, 2026 and one-half April 8, 2027.

(18) On October 8, 2025, the reporting person was indirectly granted 102,500 restricted stock units. The restricted stock units vest one-third on October 8, 2026, one-third on October 8, 2027 and one-third on October 8, 2028.

**Remarks:**
Exhibit List: Exhibit 24 - Power of Attorney

**Signature:** /s/ Robert W. Hudson Jr as attorney-in-fact for William M. Sheriff  
**Date:** 2026-04-22

### Remarks:

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**