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): February 25, 2011

GOODRICH PETROLEUM CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (713) 780-9494

N/A

(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:

Purchase Agreement

On February 25, 2011, Goodrich Petroleum Corporation (the “Company”) entered into a purchase agreement (the “Purchase Agreement”) among the Company, Goodrich Petroleum Company, L.L.C., as a guarantor (the “Guarantor”), and J.P. Morgan Securities LLC, as a representative of the initial purchasers named therein (collectively, the “Initial Purchasers”), pursuant to which the Company agreed to issue and sell to the Initial Purchasers $275,000,000 aggregate principal amount of the Company’s 8.875% senior notes due 2019 (the “Notes”) in a private placement. The Notes were sold to eligible investors at par, resulting in net proceeds to the Company of approximately $268.3 million, a portion of which is expected to be used for the redemption in December 2011, or earlier repurchase, of the Company’s $175 million outstanding 3.25% convertible senior notes due 2026 (the “2026 Notes”). Closing of the issuance and sale of the Notes occurred on March 2, 2011.

The Purchase Agreement contains customary representations and warranties of the parties, customary conditions to closing and indemnification and contribution provisions under which the Company and the Guarantor, on the one hand, and the Initial Purchasers, on the other, have agreed to indemnify each other against certain liabilities, including liabilities under the Securities Act of 1933. In addition, the Company has agreed with the Initial Purchasers not to offer or sell any debt securities (other than the Notes or any notes to issued in an exchange offer for the Notes) for a period of 60 days after the date of the Purchase Agreement without the prior consent of J.P. Morgan Securities LLC.

A copy of the Purchase Agreement is filed as Exhibit 10.1 to this Form 8-K and is incorporated herein by reference. The description of the Purchase Agreement in this report is a summary and is qualified in its entirety by the terms of the Purchase Agreement.

Amendment to Credit Agreement

On February 25, 2011, the Guarantor, a wholly-owned subsidiary of the Company, entered into a Fourth Amendment (the “Fourth Amendment”) to the Second Amended and Restated Credit Agreement (the “Credit Agreement”) with BNP Paribas, as administrative agent, and the lenders party thereto. The Fourth Amendment became effective upon satisfaction of the closing conditions specified therein, the most significant of which was the closing of the issuance and sale of the Notes, which occurred on March 2, 2011, and the placement of $175 million of net proceeds therefrom in a segregated account with the lenders to be used for the redemption or earlier repurchase of all of the Company’s outstanding 2026 Notes. The Fourth Amendment, among other things:

The revisions to the financial covenants made in the Fourth Amendment include:

provided that such ratios, when measured for the first three quarters of 2011, shall be based on annualized 2011 interim EBITDAX amounts rather than trailing four quarters.

A copy of the Fourth Amendment is filed as Exhibit 10.2 to this Current Report on Form 8-K and is incorporated herein by reference.

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(d) Exhibits

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SIGNATURES

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.

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EXHIBIT INDEX

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