Filed Pursuant to Rule 424(b)(3)

Registration No. 333-268478

PROSPECTUS SUPPLEMENT NO. 1

(To the Prospectus dated April 3, 2023)

Granite Ridge Resources, Inc.

123,671,585 Shares of Common Stock
10,349,975 Shares of Common Stock issuable
upon the exercise of Warrants

This prospectus supplement supplements the prospectus, dated April 3, 2023 (as supplemented or amended, the “Prospectus”) of Granite Ridge Resources, Inc. (the “Company” or “Granite Ridge”), which forms a part of our registration statement on Form S-1 (No. 333-268478). This prospectus supplement is being filed to update and supplement the information in the Prospectus with the information contained in the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 16, 2023. Accordingly, we have attached the Current Report to this prospectus supplement.

The Prospectus and this prospectus supplement relate to (i) the issuance by us of up to an aggregate of 10,349,975 shares of common stock, $0.0001 par value (the “Granite Ridge common stock”) that may be issued upon exercise of warrants to purchase Granite Ridge common stock at an exercise price of $11.50 per share (the “Granite Ridge warrants”) and (ii) the offer and sale from time to time by the selling securityholders named in the Prospectus (the “Selling Securityholders”), or their permitted transferees, of up to 123,671,585 shares of Granite Ridge common stock

Granite Ridge common stock and Granite Ridge warrants are listed on the New York Stock Exchange under the symbols “GRNT” and “GRNT WS,” respectively. On May 15, 2023, the closing price of Granite Ridge common stock was $5.36 per share and the closing price of Granite Ridge warrants on May 15, 2023 was $0.59 per warrant.

This prospectus supplement should be read in conjunction with the Prospectus and is not complete without, and may not be delivered or utilized except in connection with, the Prospectus, including any amendments or supplements thereto. This prospectus supplement is qualified by reference to the Prospectus, including any amendments or supplements thereto, except to the extent that the information in this prospectus supplement updates and supersedes the information contained therein. If there is any inconsistency between the information in the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement.

We are an “emerging growth company” and a “smaller reporting company” as those terms are defined under applicable federal securities laws, and as such, are subject to certain reduced public company reporting requirements.

Investing in our securities involves a high degree of risk. Before buying any securities, you should carefully read the discussion of the risks of investing in our securities in “Risk Factors” beginning on page 10 of the Prospectus.

Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus supplement or the Prospectus. Any representation to the contrary is a criminal offense.

Prospectus Supplement dated May 16, 2023.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 16, 2023

Granite Ridge Resources, Inc.

(Exact name of registrant as specified in its charter)

Delaware	001-41537		88-2227812
(State or other jurisdiction of incorporation)	(Commission File Number)		(IRS Employer Identification No.)
5217 McKinney Avenue, Suite 400 Dallas, Texas		75205
(Address of principal executive offices)		(Zip Code)

(214) 396-2850

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock, par value $0.0001 per share	GRNT	New York Stock Exchange
Warrants to purchase Common Stock, each whole warrant exercisable for one share of common stock at an exercise price of $11.50 per share	GRNT WS	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company x

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 7.01 Regulation FD Disclosure.

On May 16, 2023, Granite Ridge Resources, Inc. (the “Company”) published an Investor Presentation, which is available on the Company’s website, www.graniteridge.com, under “Investors.” The Company may from time to time publish additional materials for investors at the same website address. A copy of the Investor Presentation is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information in this Current Report on Form 8-K is being furnished herewith and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act except to the extent expressly stated in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
99.1*	Investor Presentation of Granite Ridge Resources, Inc., dated as of May 2023.
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		GRANITE RIDGE RESOURCES, INC.
Date: May 16, 2023	By:	/s/ Luke C. Brandenberg
		Name:	Luke C. Brandenberg
		Title:	President and Chief Executive Officer