PERPETUA RESOURCES CORP. — Director's Dealing 2026

Feb 17, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PERPETUA RESOURCES CORP. (PPTA)
CIK: 0001526243
Period of Report: 2026-02-12

Reporting Person: Lyon Mckinsey Margaret ((See remarks (7)))

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-12	Common Shares	S	6270	$27.54	Disposed	169562	Direct
2026-02-12	Common Shares	S	37452	$27.58	Disposed	132110	Direct
2026-02-16	Common Shares	M	13636	—	Acquired	145746	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-16	Restricted Share Units	$	M	13636	Disposed		Common Shares (13636)	Direct

Footnotes

F1: 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: 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).

F3: 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: 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).

F5: 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: 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.