Perpetua Resources executive sells 8,699 shares

Perpetua Resources executive Margaret Lyon Mckinsey reported selling a total of 8,699 common shares in two open-market transactions on April 2, 2026 at weighted average prices of US$29.62 and US$29.31.

Accepted by SEC EDGAR 04/02/2026 - 09:30 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Perpetua Resources executive Margaret Lyon Mckinsey reported selling a total of 8,699 common shares in two open-market transactions on April 2, 2026 at weighted average prices of US$29.62 and US$29.31.

The footnotes explain these sales were made solely to cover tax withholding obligations tied to Restricted Share Units that vested on February 16, 2026 and February 21, 2026, and were settled in common shares after the company’s blackout period ended on April 1, 2026. After these transactions, she continues to hold 142,329 common shares directly, indicating she retained the majority of her equity position.

Insider Trade Summary

Net Seller: 8,699 shares

Net Sell 2 txns

Insider Lyon Mckinsey Margaret

Role (See remarks (5))

Sold 8,699 shs ($257K)

Share of Position Sold 5.8%

Type	Security	Shares	Price	Value
Sale	Common Shares	6,123	$29.62	$181K
Sale	Common Shares	2,576	$29.31	$76K

Holdings After Transaction: Common Shares — 142,329 shares (Direct)

Holdings Before and After: Common Shares, 151,028 to 142,329 shares (Direct)

Other Insiders: 1 other insider reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (4)

1. 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 16, 2026, and were settled in Common Shares of the Issuer following the end of the Issuer's blackout period on April 1, 2026.
2. F2. 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).
3. 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 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.
4. 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$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).

Key Figures

Shares sold (first transaction): 6,123 shares Price first sale: US$29.62/share Shares sold (second transaction): 2,576 shares +5 more

8 metrics

Shares sold (first transaction) 6,123 shares Common Shares sold on April 2, 2026 at US$29.62 weighted average

Price first sale US$29.62/share Weighted average price for 6,123 common shares sold April 2, 2026

Shares sold (second transaction) 2,576 shares Common Shares sold on April 2, 2026 at US$29.31 weighted average

Price second sale US$29.31/share Weighted average price for 2,576 common shares sold April 2, 2026

Total shares sold 8,699 shares Aggregate common shares sold to cover tax withholding

Shares held after transactions 142,329 shares Direct common share holdings following April 2, 2026 sales

RSU vesting dates February 16 and 21, 2026 Restricted Share Units that led to tax-related share sales

Blackout period end April 1, 2026 Date after which RSUs were settled into common shares

Key Terms

Restricted Share Units, blackout period, weighted average price, tax withholding obligations

4 terms

Restricted Share Units financial

"in connection with the settlement of Restricted Share Units, which vested on February 16, 2026"

Restricted share units (RSUs) are a promise from a company to give an employee or service provider actual shares or cash equal to the shares after certain conditions are met, typically staying with the company for a set time or hitting performance targets. Think of them like a time-locked gift card that becomes usable only after you’ve earned it. For investors, RSUs matter because they align employee incentives with company performance and can increase the number of shares outstanding over time, diluting existing ownership and affecting earnings per share.

blackout period regulatory

"settled in Common Shares of the Issuer following the end of the Issuer's blackout period on April 1, 2026"

A blackout period is a temporary window when company insiders, employees or certain plan participants are barred from buying or selling the company’s stock, usually around earnings releases or other material events. It matters to investors because it reduces the risk of unfair trading based on secret information and can affect share liquidity and timing—think of it as a “no trading” zone set to keep the market fair and orderly.

weighted average price financial

"The sale price included on this Form 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

tax withholding obligations financial

"shares sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of Restricted Share Units"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Perpetua Resources (PPTA) report for Margaret Lyon Mckinsey?

Perpetua Resources reported that executive Margaret Lyon Mckinsey sold 8,699 common shares on April 2, 2026. The sales were open-market transactions executed at weighted average prices around US$29–US$30 per share to satisfy tax withholding obligations on vested Restricted Share Units.

Why did Margaret Lyon Mckinsey sell Perpetua Resources (PPTA) shares?

The filing states the sales were made to cover tax withholding obligations from Restricted Share Units that vested in February 2026. Those RSUs were settled in common shares after the company’s blackout period ended, and a portion of those shares was sold to pay required taxes.

How many Perpetua Resources (PPTA) shares did Margaret Lyon Mckinsey sell and at what prices?

She sold 6,123 common shares at a weighted average price of US$29.62 and 2,576 shares at a weighted average price of US$29.31. Both transactions occurred on April 2, 2026, through open-market or private sale mechanisms as disclosed.

How many Perpetua Resources (PPTA) shares does Margaret Lyon Mckinsey hold after the reported sales?

After completing the tax-related sales, Margaret Lyon Mckinsey directly holds 142,329 common shares of Perpetua Resources. This figure reflects her position following both April 2, 2026 transactions, indicating she retained the majority of her equity stake after covering tax obligations.

What do the Perpetua Resources (PPTA) Form 4 footnotes reveal about the share sale pricing?

The footnotes explain that each reported sale price is a weighted average, with individual trades executed within specified ranges. For one sale, prices ranged from US$29.58 to US$29.76, and for the other, from US$29.28 to US$29.44, with full breakdowns available on request.

Were the Perpetua Resources (PPTA) insider sales linked to a trading plan?

The disclosure describes the transactions as sales to cover tax withholding on Restricted Share Units that vested in February 2026 and settled after an April 1, 2026 blackout period. It does not characterize them as discretionary purchases or sales beyond these tax-related obligations.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lyon Mckinsey Margaret

(Last) (First) (Middle)

405 S. 8TH STREET, STE 201

(Street)

BOISE IDAHO 83702

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PERPETUA RESOURCES CORP. [ PPTA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	(See remarks (5))

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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 Shares	04/02/2026		S(1)		6,123	D	$29.62(2)	144,905	D
Common Shares	04/02/2026		S(3)		2,576	D	$29.31(4)	142,329	D

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. 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.

2. 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).

3. 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.

4. 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).

Remarks:

(5) Senior Vice President, External Affairs at Perpetua Resources Idaho, Inc., a wholly owned subsidiary of Perpetua Resources Corp.

	/s/ Tanya Nelson, as attorney-in-fact for Mckinsey Lyon	04/02/2026
	** Signature of Reporting Person	Date
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.
* Form 4: SEC 1474 (03-26)