Granite Ridge director buys 10K shares at $5.03

A Granite Ridge Resources director reported an open-market purchase of additional GRNT shares, increasing his direct holdings.

Rhea-AI Filing Summary

Granite Ridge Resources, Inc. (GRNT) director Matthew Reade Miller purchased 10,000 shares of common stock on September 11, 2026 in an open-market transaction at a weighted average price of $5.03 per share. After this purchase, he directly holds 1,974,292 shares of Granite Ridge common stock.

Insider Trade Summary

Net Buyer: 10,000 shares

Net Buy 1 txn

Insider Miller Matthew Reade

Role Director

Bought 10,000 shs ($50K)

Type	Security	Shares	Price	Value
Purchase	Common Stock, par value $0.0001 per share F1	10,000	$5.03	$50K

Holdings After Transaction: Common Stock, par value $0.0001 per share — 1,974,292 shares (Direct)

Footnotes (1)

1. F1. This transaction was executed in multiple trades at prices ranging from $5.0297 to $5.0298. The price reported above reflects the weighted average purchase price. The reporting person undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Key Figures

Shares purchased: 10,000 shares Weighted average purchase price: $5.03 per share Trade price range: $5.0297–$5.0298 per share +1 more

4 metrics

Shares purchased 10,000 shares Common stock purchased by director on September 11, 2026

Weighted average purchase price $5.03 per share Open-market purchase of GRNT common stock

Trade price range $5.0297–$5.0298 per share Range of individual trade prices for the 10,000-share purchase

Holdings after transaction 1,974,292 shares Director’s direct ownership of GRNT common stock after the purchase

Key Terms

weighted average purchase price, open market or private transaction, Rule 10b5-1

3 terms

weighted average purchase price financial

"The price reported above reflects the weighted average purchase price."

The weighted average purchase price is the average cost per share you paid across multiple buys, calculated so larger purchases count more than smaller ones. Imagine buying apples at different prices: the overall price you effectively paid depends on how many apples you bought at each price. Investors use it to measure true cost basis, calculate gains or losses, decide when to sell, and manage taxes and portfolio performance.

open market or private transaction financial

"Purchase in open market or private transaction"

Rule 10b5-1 regulatory

"The Rule 10b5-1 checkbox is not affirmed for these transactions."

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What insider transaction did GRNT report in this Form 4?

Granite Ridge Resources reported that director Matthew Reade Miller purchased 10,000 shares of common stock on September 11, 2026 in an open-market transaction at a weighted average price of $5.03 per share.

How many GRNT shares does the director hold after this transaction?

After the September 11, 2026 purchase, director Matthew Reade Miller directly holds 1,974,292 shares of Granite Ridge Resources common stock, as reported in the Form 4.

At what prices were the GRNT shares actually traded in this Form 4?

The 10,000-share purchase was executed in multiple trades at prices ranging from $5.0297 to $5.0298 per share. The reported $5.03 reflects the weighted average purchase price across those trades.

Was the GRNT insider purchase made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed, and the footnote does not reference any trading plan, so the purchase is not reported as made under a Rule 10b5-1 plan.

Is this GRNT Form 4 transaction a purchase or a sale?

The Form 4 reports a purchase transaction. Director Matthew Reade Miller acquired 10,000 shares of Granite Ridge Resources common stock in an open-market transaction on September 11, 2026.

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

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Available on EDGAR 09/14/2026 - 11:44 AM EDT Accepted by SEC EDGAR 09/14/2026 - 11:43 AM EDT Learn about SEC filing dates

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^*

Miller Matthew Reade

(Last) (First) (Middle)

5217 MCKINNEY AVE., SUITE 400

(Street)

DALLAS TEXAS 75205

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Granite Ridge Resources, Inc. [ GRNT ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/11/2026

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 Stock, par value $0.0001 per share	09/11/2026		P		10,000	A	$5.03(1)	1,974,292	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. This transaction was executed in multiple trades at prices ranging from $5.0297 to $5.0298. The price reported above reflects the weighted average purchase price. The reporting person undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Remarks:

	/s/ Emily Fuquay, by power of attorney for Matthew R. Miller	09/14/2026
	** 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)