EU · enCore Energy Corp.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.38 to $1.40, inclusive. The reporting person undertakes to provide to enCore Energy Corp., any security holder of enCore Energy Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (2) to this form

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.36 to $1.39, inclusive. The reporting person undertakes to provide to enCore Energy Corp., any security holder of enCore Energy Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (1) to this form

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.27 to $1.30, inclusive. The reporting person undertakes to provide to enCore Energy Corp., any security holder of enCore Energy Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (1) to this Form 4.

The Reporting Person has agreed to voluntarily disgorge to enCore Energy Corp. all statutory "profits" pursuant to Section 16(b) of the Securities Exchange Act of 1934, as amended, that resulted from the transactions reported herein.

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

On October 8, 2025, the reporting person was granted 67,500 restricted stock units. The restricted stock units vested 33% on May 1, 2026 and will vest 33% on May 1, 2027 and 34% on May 1, 2028.

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

On April 20, 2026, the reporting person was granted 300,000 stock options. The stock options vest and become exercisable one-third on April 20, 2027, one-third on April 20, 2028 and one-third on April 20, 2029.

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

On April 20, 2026, the reporting person was granted 100,000 restricted stock units. The restricted stock units vest one-third on April 20, 2027, one-third on April 20, 2028 and one-third on April 20, 2029.

The reported sale of common shares of enCore Energy Corp. occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 27, 2025.

The reported sale of common shares of enCore Energy Corp. occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 27, 2025.

Represents a sale price of $3.89 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.3866 reported by the Bank of Canada on January 8, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.67 to $2.69, inclusive. The reporting person undertakes to provide to enCore Energy Corp., any security holder of enCore Energy Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

The reported sale of 24,000 common shares of enCore Energy Corp. occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 27, 2025.

Represents a sale price of $3.67 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.3768 reported by the Bank of Canada on January 5, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.42 to $2.43, inclusive. The reporting person undertakes to provide to enCore Energy Corp., any security holder of enCore Energy Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4.

The reported sale of 24,000 common shares of enCore Energy Corp. occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 27, 2025.

On December 1, 2025, the reporting person was granted 100,000 stock options. The stock options vest and become exercisable one-fourth on June 1, 2026, one-fourth on December 1, 2026, one-fourth on June 1, 2027 and one-fourth on December 1, 2027.

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

On December 1, 2025, the reporting person was granted 25,000 restricted stock units. The restricted stock units vest one-half on December 1, 2026 and one-half on December 1, 2027.

The reported sale of 24,000 common shares of enCore Energy Corp. occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 27, 2025.

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

On October 8, 2025, the reporting person was granted 60,000 restricted stock units. The restricted stock units vest on October 1, 2026.

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

On October 8, 2025, the reporting person was granted 175,133 restricted stock units. The restricted stock units vest one-half on October 8, 2026 and one-half on October 8, 2027.

On October 8, 2025, the reporting person was granted 30,000 stock options. The stock options vest and become exercisable one-fourth April 8, 2026, one-fourth October 8, 2026 and one-half April 8, 2027.

On October 8, 2025, the reporting person was granted 250,000 stock options. The stock options vest and become exercisable one-fourth on October 1, 2026, one-fourth on October 1, 2027, one-fourth on October 1, 2028 and one-fourth on October 1, 2029.

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

On October 8, 2025, the reporting person was granted 231,266 restricted stock units. The restricted stock units vest one-half on October 8, 2026 and one-half on October 8, 2027.

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

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.

Each restricted stock unit represents one common share of enCore Energy Corp.

On October 8, 2025, the reporting person was granted 196,499 restricted stock units. The restricted stock units vest one-half October 8, 2026 and one-half October 8, 2027.

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

On October 8, 2025, the reporting person was granted 67,500 restricted stock units. The restricted stock units vest 33% on May 1, 2026, 33% on May 1, 2027 and 34% on May 1, 2028.

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

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.

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

On October 8, 2025, the reporting person was granted 181,700 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.

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

On October 8, 2025, the reporting person was granted 200,133 restricted stock units. The restricted stock units vest one-half on October 8, 2026 and one-half on October 8, 2027.

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

On October 8, 2025, the reporting person was granted 36,000 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.

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

On October 8, 2025, the reporting person was granted 145,000 restricted stock units. The restricted stock units vest one-half on October 8, 2026 and one-half on October 8, 2027.

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

On October 8, 2025, the reporting person was granted 250,000 restricted stock units. The restricted stock units vest one-fourth on October 1, 2026, one-fourth on October 1, 2027, one-fourth on October 1, 2028 and one-fourth on October 1, 2029.

Represents a sale price of $4.64 Canadian dollars, converted to U.S. dollars at the daily average exchange rate of $1.00 to CAD$1.3951 reported by the Bank of Canada on October 7, 2025.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.41 to $3.42, inclusive. The reporting person undertakes to provide to enCore Energy Corp., any security holder of enCore Energy Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4.

On September 24, 2025, the reporting person was granted 125,000 stock options. The stock options vest and become exercisable one-fourth on September 24, 2026, one-fourth on September 24, 2027, one-fourth on September 24, 2028 and one-fourth on September 24, 2029.

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

On September 24, 2025, the reporting person was granted 500,000 restricted stock units. The restricted stock units vest in full on September 24, 2030.

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

On September 24, 2025, the reporting person was granted 125,000 restricted stock units. The restricted stock units vest one-fourth on September 24, 2026, one-fourth on September 24, 2027, one-fourth on September 24, 2028 and one-fourth on September 24, 2029.

On September 24, 2025, the reporting person was granted 100,000 stock options of the Company pursuant to the Company's Long Term Incentive Plan. The stock options vest and become exercisable one-fourth on September 24, 2026, one-fourth on September 24, 2027, one-fourth on September 24, 2028 and one-fourth on September 24, 2029.

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

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

On September 24, 2025, the reporting person was granted 500,000 restricted stock units. The restricted stock units vest in full on September 24, 2030.