Lyon Mckinsey Margaret

SEC source: 0001104659-26-039364 · tm2611096-1_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (5))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,329

F3 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units, which vested on February 21, 2026, and were settled in Common Shares of the Issuer following the end of the Issuer's blackout period on April 1, 2026.

F4 · price: The sale price included on this Form 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from US$29.28 to US$29.44, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (4).

SEC source: 0001104659-26-039364 · tm2611096-1_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (5))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,905

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units, which vested on February 16, 2026, and were settled in Common Shares of the Issuer following the end of the Issuer's blackout period on April 1, 2026.

F2 · price: The sale price included on this Form 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from US$29.58 to US$29.76, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (2).

SEC source: 0001104659-26-019276 · tm267193-2_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,325

Underlying: Common Shares · 5,282 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 21, 2026 were settled in Common Shares of the Issuer.

F2 · derivative.exercise_date: On February 21, 2025, the reporting person was granted 15,847 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On February 21, 2025, the reporting person was granted 15,847 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 21, 2026 were settled in Common Shares of the Issuer.

SEC source: 0001104659-26-019276 · tm267193-2_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,028

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001104659-26-016657 · tm266687-1_4seq1.xml · derivative · entry 4

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (7))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,607

Underlying: Common Shares · 13,636 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 16, 2026 were settled in Common Shares of the Issuer.

F6 · derivative.exercise_date: On February 16, 2024, the reporting person was granted 40,910 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F6 · derivative.expiration_date: On February 16, 2024, the reporting person was granted 40,910 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F5 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 16, 2026 were settled in Common Shares of the Issuer.

SEC source: 0001104659-26-016657 · tm266687-1_4seq1.xml · nonDerivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (7))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,746

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 16, 2026 were settled in Common Shares of the Issuer.

SEC source: 0001104659-26-016657 · tm266687-1_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (7))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,110

F3 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Performance Share Units, which vested on February 11, 2026, when certification of the applicable performance measures occurred, and were settled in Common Shares of the Issuer following such certification.

F4 · price: The sale price included on this Form 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from US$27.39 to US$27.93, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (4).

SEC source: 0001104659-26-016657 · tm266687-1_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (7))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,562

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units, which vested on February 10, 2026, and were settled in Common Shares of the Issuer.

F2 · price: The sale price included on this Form 4 is a weighted average price and is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on February 6, 2026, of C$1.3644 = US$1.00. These shares were sold in multiple transactions at prices ranging from US$27.40 to US$27.69, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (2).

SEC source: 0001104659-26-014591 · tm266296-8_4seq1.xml · derivative · entry 4

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,243

Underlying: Common Shares · 5,123 shares

Expires not disclosed

F3 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on February 16, 2027, 2028 and 2029, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F3 · derivative.exercise_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on February 16, 2027, 2028 and 2029, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F3 · derivative.expiration_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on February 16, 2027, 2028 and 2029, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-26-014591 · tm266296-8_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,832

SEC source: 0001104659-26-014591 · tm266296-8_4seq1.xml · derivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,120

Underlying: Common Shares · 11,310 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2026 were settled in Common Shares of the Issuer.

F2 · derivative.exercise_date: On February 10, 2023, the reporting person was granted 33,929 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On February 10, 2023, the reporting person was granted 33,929 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-26-014591 · tm266296-8_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,974

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2026 were settled in Common Shares of the Issuer.

SEC source: 0001104659-26-001875 · tm262506-2_4seq1.xml · derivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 40,000 shares

Expires 2026-01-20

F1 · derivative.exercise_price: The exercise price of the stock option of CAD $11.80 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on January 2, 2026, of C$1.3738 = US$1.00.

F3 · derivative.exercise_date: The stock option, representing a right to purchase a total of 40,000 Common Shares, became exercisable as to 10,000 Common Shares on January 20, 2021, as to 10,000 Common Shares on January 20, 2022, as to 10,000 Common Shares on January 20, 2023, and as to the remaining 10,000 on January 20, 2024.

SEC source: 0001104659-26-001875 · tm262506-2_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,664

F2 · price: The sale price of the stock option of CAD $36.56 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on January 2, 2026, of C$1.3738 = US$1.00. The sale price of CAD $36.56 is a weighted average price. These shares were sold in multiple transactions at prices ranging from CAD $36.38 to CAD $36.65, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this footnote (2). These shares include shares sold to cover option exercise price.

SEC source: 0001104659-26-001875 · tm262506-2_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,154

F1 · price: The exercise price of the stock option of CAD $11.80 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on January 2, 2026, of C$1.3738 = US$1.00.

SEC source: 0001104659-25-030781 · tm2511135-7_4seq1.xml · derivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (5))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 20,000 shares

Expires 2025-03-20

F1 · derivative.exercise_price: The exercise price of the stock option of CAD $3.50 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on March 28, 2025, of C$1.4282 = US$1.00.

F3 · derivative.exercise_date: The stock option, representing a right to purchase a total of 20,000 Common Shares, became exercisable as to 5,000 Common Shares on March 20, 2020, exercisable as to 5,000 Common Shares on March 20, 2021, exercisable as to 5,000 Common Shares on March 20, 2022, and exercisable as to the remaining 5,000 Common Shares on March 20, 2023.

F4 · derivative.expiration_date: The expiration date was extended through termination of blackout period pursuant to terms of the Issuer's 2011 Evergreen Incentive Stock Option Plan.

SEC source: 0001104659-25-030781 · tm2511135-7_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (5))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,154

F2 · price: The sale price of the stock option of CAD $15.71 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on March 28, 2025, of C$1.4282 = US$1.00. The sale price of CAD $15.71 is a weighted average price. These shares were sold in multiple transactions at prices ranging from CAD $15.66 to CAD $15.82, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this footnote (2).

SEC source: 0001104659-25-030781 · tm2511135-7_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (5))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,154

F1 · price: The exercise price of the stock option of CAD $3.50 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on March 28, 2025, of C$1.4282 = US$1.00.

SEC source: 0001104659-25-021846 · tm258633-3_4seq1.xml · derivative · entry 5

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (6))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,430

Underlying: Common Shares · 10,612 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on March 5, 2025 were settled in Common Shares of the Issuer.

F5 · derivative.exercise_date: On March 5, 2022, the reporting person was granted 36,863 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F5 · derivative.expiration_date: On March 5, 2022, the reporting person was granted 36,863 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-25-021846 · tm258633-3_4seq1.xml · nonDerivative · entry 4

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (6))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,154

F4 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Performance Share Units, which vested on March 5, 2025, when certification of the applicable performance measures occurred, and were settled in Common Shares of the Issuer following such certification.

F3 · price: The sale price included on this Form 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.76 to $9.00, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (3).

SEC source: 0001104659-25-021846 · tm258633-3_4seq1.xml · nonDerivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (6))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,619

F2 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units, which vested on March 5, 2025, and were settled in Common Shares of the Issuer.

F3 · price: The sale price included on this Form 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.76 to $9.00, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (3).

SEC source: 0001104659-25-021846 · tm258633-3_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (6))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,864

SEC source: 0001104659-25-021846 · tm258633-3_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (6))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,192

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on March 5, 2025 were settled in Common Shares of the Issuer.

SEC source: 0001104659-25-016250 · tm257329-1_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,042

Underlying: Common Shares · 15,847 shares

Expires not disclosed

F3 · derivative.exercise_price: An RSU entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F3 · derivative.exercise_date: An RSU entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F3 · derivative.expiration_date: An RSU entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-25-016250 · tm257329-1_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,580

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units ("RSU"), which vested on February 10, 2025 and February 16, 2025, and were settled in Common Shares of the Issuer following the end of the Issuer's blackout period on February 20, 2025.

F2 · price: The sale price included on this Form 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.14 to $9.29, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the ranges set forth in this footnote (2).

SEC source: 0001104659-25-015174 · tm257042-3_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,195

Underlying: Common Shares · 13,637 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 16, 2025 were settled in Common Shares of the Issuer.

F2 · derivative.exercise_date: On February 16, 2024, the reporting person was granted 40,910 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On February 16, 2024, the reporting person was granted 40,910 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 16, 2025 were settled in Common Shares of the Issuer.

SEC source: 0001104659-25-015174 · tm257042-3_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,789

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 16, 2025 were settled in Common Shares of the Issuer.

SEC source: 0001104659-25-012379 · tm256327-3_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,832

Underlying: Common Shares · 11,309 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2025 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period.

F2 · derivative.exercise_date: On February 10, 2023, the reporting person was granted 33,929 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On February 10, 2023, the reporting person was granted 33,929 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2025 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period.

SEC source: 0001104659-25-012379 · tm256327-3_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,152

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2025 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period.

SEC source: 0001104659-24-105436 · tm2425401-8_4seq1.xml · derivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 21,500 shares

Expires 2025-01-01

F1 · derivative.exercise_price: The exercise price of the stock option of CAD $6.20 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on September 27, 2024, of C$1.3504 = US$1.00.

F3 · derivative.exercise_date: The stock option, representing a right to purchase a total of 21,500 Common Shares, became exercisable as to 5,375 Common Shares on January 1, 2020, exercisable as to 5,375 Common Shares on January 1, 2021, exercisable as to 5,375 Common Shares on January 1, 2022, and exercisable as to 5,375 Common Shares on January 1, 2023, subject to the terms and conditions of the Issuer's 2011 Evergreen Incentive Stock Option Plan.

SEC source: 0001104659-24-105436 · tm2425401-8_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,843

F2 · price: The sale price of the stock option of CAD $12.62 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on September 27, 2024, of C$1.3504 = US$1.00. The sale price of CAD $12.62 is a weighted average price. These shares were sold in multiple transactions at prices ranging from CAD $12.57 to CAD $12.74, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this footnote (2).

SEC source: 0001104659-24-105436 · tm2425401-8_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (4))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,343

F1 · price: The exercise price of the stock option of CAD $6.20 is converted to USD based on the daily average exchange rate as reported by the H.10 statistical release of the Board of Governances of the Federal Reserve System on September 27, 2024, of C$1.3504 = US$1.00.

SEC source: 0001104659-24-041817 · tm2410301-1_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (2))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,843

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units, which vested on February 10, 2024 and March 5, 2024, and were settled in common shares of the Issuer following the end of the Issuer's blackout period on March 28, 2024.

SEC source: 0001104659-24-031882 · tm248204-1_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,141

Underlying: Common Shares · 10,612 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on March 5, 2024 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period.

F2 · derivative.exercise_date: On March 5, 2022, the reporting person was granted 31,836 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On March 5, 2022, the reporting person was granted 31,836 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on March 5, 2024 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period.

SEC source: 0001104659-24-031882 · tm248204-1_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,661

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on March 5, 2024 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period.

SEC source: 0001104659-24-026036 · tm246798-10_4seq1.xml · derivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · See remarks (2)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,753

Underlying: Common Shares · 40,910 shares

Expires not disclosed

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.exercise_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.expiration_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-24-021410 · tm246102-4_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (2))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,843

Underlying: Common Shares · 11,310 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2024 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period on March 21, 2024.

F2 · derivative.exercise_date: On February 10, 2023, the reporting person was granted 33,929 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On February 10, 2023, the reporting person was granted 33,929 RSUs that vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2024 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period on March 21, 2024.

SEC source: 0001104659-24-021410 · tm246102-4_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (2))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,049

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs that vested on February 10, 2024 will be settled in Common Shares of the Issuer following the end of the Issuer's blackout period on March 21, 2024.

SEC source: 0001104659-23-036073 · tm2310335-3_4seq1.xml · nonDerivative · entry 3

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,739

F2 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Performance Share Units, which vested on March 21, 2023, when certification of the applicable performance measures occurred, and were settled in common shares of the Issuer following such certification.

SEC source: 0001104659-23-036073 · tm2310335-3_4seq1.xml · nonDerivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,072

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units, which vested on March 5, 2023, and were settled in common shares of the Issuer following the end of the Issuer's blackout period on March 21, 2023.

SEC source: 0001104659-23-036073 · tm2310335-3_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,112

SEC source: 0001104659-23-029643 · tm238750-6_4seq1.xml · derivative · entry 2

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,153

Underlying: Common Shares · 10,612 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU, as elected by the reporting person subject to the approval of the administrator of the Issuer's Omnibus Equity Incentive Plan. The RSUs that vested on March 5, 2023 will be settled in common shares of the Issuer following the end of the Issuer's blackout period on March 21, 2023.

F2 · derivative.exercise_date: On March 5, 2022, the reporting person was granted 31,836 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F2 · derivative.expiration_date: On March 5, 2022, the reporting person was granted 31,836 RSUs, which vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-23-029643 · tm238750-6_4seq1.xml · nonDerivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (3))

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,612

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU, as elected by the reporting person subject to the approval of the administrator of the Issuer's Omnibus Equity Incentive Plan. The RSUs that vested on March 5, 2023 will be settled in common shares of the Issuer following the end of the Issuer's blackout period on March 21, 2023.

SEC source: 0001104659-23-022005 · tm236828-10_4seq1.xml · derivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · (See remarks (2))

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,765

Underlying: Common Shares · 33,929 shares

Expires not disclosed

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.exercise_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.expiration_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

SEC source: 0001104659-22-031123 · tm228533-4_4seq1.xml · derivative · entry 1

Lyon Mckinsey Margaret · CIK 0001902352 · See remarks (2)

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,836

Underlying: Common Shares · 31,836 shares

Expires not disclosed

F1 · derivative.exercise_price: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.exercise_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.expiration_date: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.

F1 · derivative.underlying_shares: A restricted share unit ("RSU") entitles the holder to receive one Common Share (or cash equal to the value thereof) for each vested RSU. The RSUs will vest ratably on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Perpetua Resources Corp. Omnibus Equity Incentive Plan.