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Montauk Renewables, Inc.

For the period ended Dec 31, 2024. Filed Mar 14, 2025.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2024 · Filed Mar 14, 2025

MNTK$1.19-57.2%Stored close · as of Nov 10, 2026

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Contents

Item 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)(1) Financial Statements

See Part II, Item 8. “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K.

(a)(2) Financial Statements

Schedules not filed with this Annual Report on Form 10-K are omitted because of the absence of conditions under which they are required or because the information called for is shown in the financial statements or related notes.

(a)(3) Exhibits

ExhibitNumberDescription
2.1.1+Transaction Implementation Agreement, dated as of November 6, 2020, between Montauk Renewables, Inc., Montauk Holdings Limited and Montauk Holdings USA, LLC (incorporated by reference to Exhibit 2.1 of our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
2.1.2Letter Agreement, dated as of January 3, 2021, to the Transaction Implementation Agreement, dated as of November 6, 2020, between Montauk Renewables, Inc., Montauk Holdings Limited and Montauk Holdings USA, LLC (incorporated by reference to Exhibit 2.2 of Amendment No. 3 to our Registration Statement on Form S-1 (File No. 333-251312), filed January 8, 2021)
2.2.1+Membership Interest and Asset Purchase Agreement, dated May 10, 2021, by and among J.P. Carroll & Co., LLC, Eagle Creek Ranch, L.L.C., NR Nutrient Recovery, LLC, Joseph P. Carroll, Jr., Martin A. Redeker and Montauk Swine Ag, LLC (incorporated by reference to Exhibit 2.1 of our Current Report on Form 8-K, filed on May 11, 2021)
2.2.2First Amendment to Membership Interest and Asset Purchase Agreement, dated May 26, 2022, by and among J.P. Carroll & Co., LLC, Eagle Creek Ranch, L.L.C., NR3 Nutrient Recovery, LLC, Joseph P. Carroll, Jr., Martin A. Redeker, Montauk Ag Renewables, LLC and Montauk Energy Holdings, LLC (incorporated by reference to Exhibit 2.1 of our Current Report on Form 8-K, filed on June 1, 2022)
2.3+Real Estate Purchase and Sale Agreement, dated May 10, 2021, by and among Greensboro Ecosystems, LLC and Montauk Swine Ag, LLC (incorporated by reference to Exhibit 2.2 of our Current Report on Form 8-K, filed on May 11, 2021)
3.1Amended and Restated Certificate of Incorporation of Montauk Renewables, Inc. (incorporated by reference to Exhibit 3.1 of Amendment No. 3 of our Registration Statement on Form S-1 (File No. 333-251312), filed January 8, 2021)
3.2Amended and Restated Bylaws of Montauk Renewables, Inc., as adopted on October 18, 2023 (incorporated by reference to Exhibit 3.1 of our Current Report on Form 8-K, filed October 19, 2023)
4.1Description of Securities (incorporated by reference to Exhibit 4.1 of our Annual Report on Form 10-K, filed March 31, 2021)
10.1^Montauk Renewables, Inc. Equity and Incentive Compensation Plan (incorporated by reference to Exhibit 10.1 to Amendment No. 3 to our Registration Statement on Form S-1 (File No. 333-251312), filed January 8, 2021)
10.2^Form of Key Employee Separation Plan (incorporated by reference to Exhibit 10.2 of our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.3^Form of Nonqualified Stock Option Agreement (incorporated by reference to Exhibit 10.3 of our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.4^Form of Restricted Stock Unit Award Agreement (Employees) (incorporated by reference to Exhibit 10.4 of our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.5^Form of Restricted Stock Unit Award Agreement (Non-Employee Directors) (incorporated by reference to Exhibit 10.5 of our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.6^+Form of Restricted Stock Agreement (incorporated by reference to Exhibit 10.6 of our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)

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ExhibitNumberDescription
10.7^Form of Indemnification Agreement between Montauk Renewables, Inc. and each of its directors and executive officers (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K, filed June 8, 2021)
10.8^+Employment Agreement, effective September 25, 2019, between Montauk Energy Holdings LLC and Sean F. McClain (incorporated by reference to Exhibit 10.9 to Annual Report on Form 10-K filed March 31, 2021)
10.9^+Employment Agreement, effective September 25, 2019, between Montauk Energy Holdings LLC and Kevin A. Van Asdalan (incorporated by reference to Exhibit 10.10 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.10^+Employment Agreement, effective September 24, 2019, between Montauk Energy Holdings LLC and James A. Shaw (incorporated by reference to Exhibit 10.11 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.11^+Employment Agreement, effective June 1, 2020, between Montauk Energy Holdings LLC and John Ciroli (incorporated by reference to Exhibit 10.42 to Amendment No. 3 to our Registration Statement on Form S-1 (File No. 333-251312), filed January 8, 2021)
10.12^Promotion Letter, dated October 15, 2021, between Montauk Renewables, Inc. and Sharon Frank (incorporated by reference to Exhibit 10.12 of Annual Report on Form 10-K filed on March 14, 2024)
10.13^Employment Understanding, dated January 23, 2023, and Promotion Letter, dated September 14, 2023, between Montauk Renewables, Inc. and Michael Barsch (incorporated by reference to Exhibit 10.13 of Annual Report on Form 10-K filed on March 14, 2024)
10.14.1+Second Amended and Restated Revolving Credit and Term Loan Agreement, dated as of December 12, 2018, by and among Montauk Energy Holdings LLC, the financial institutions from time to time party thereto, as lenders, and Comerica Bank, as administrative agent, sole lead arranger and sole book runner (incorporated by reference to Exhibit 10.13 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.14.2First Amendment, dated as of March 21, 2019, to the Second Amended and Restated Revolving Credit and Term Loan Agreement, dated as of December 12, 2018, by and among Montauk Energy Holdings LLC, the financial institutions from time to time party thereto, as lenders, and Comerica Bank, as administrative agent, sole lead arranger and sole book runner (incorporated by reference to Exhibit 10.14 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 11, 2020)
10.14.3Second Amendment, dated as of September 12, 2019, to the Second Amended and Restated Revolving Credit and Term Loan Agreement, dated as of December 12, 2018, by and among Montauk Energy Holdings LLC, the financial institutions from time to time party thereto, as lenders, and Comerica Bank, as administrative agent, sole lead arranger and sole book runner (incorporated by reference to Exhibit 10.15 to our Registration Statement on Form S-1(File No. 333-251312), filed December 11, 2020)
10.14.4Third Amendment, dated as of January 4, 2021, to the Second Amended and Restated Revolving Credit and Term Loan Agreement, dated as of December 12, 2018, by and among Montauk Energy Holdings LLC, the financial institutions from time to time party thereto, as lenders, and Comerica Bank, as administrative agent, sole lead arranger and sole book runner (incorporated by reference to Exhibit 10.16 to Amendment No. 3 to our Registration Statement on Form S-1 (File No. 333-251312), filed January 8, 2021)
10.14.5+Fourth Amendment to Second Amended and Restated Revolving Credit and Term Loan Agreement, dated as of December 22, 2021, by and among Montauk Energy Holdings, LLC, the financial institutions from time to time signatory thereto and Comerica Bank, as Administrative Agent (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K (file No. 001-39919), filed on December 23, 2021)
10.14.6Fifth Amendment to Second Amended and Restated Revolving Credit and Term Loan Agreement, dated as of November 8, 2024 by and among Montauk Energy Holdings, LLC, the financial institutions from time to time signatory thereto and Comerica Bank, as Administrative Agent (incorporated by reference to Exhibit 10.14 of Quarterly Report on Form 10-Q filed on November 12, 2024)
10.15.1†+Second Amended & Restated Landfill Gas Rights & Production Facilities Agreement, by and between County of Orange and Bowerman Power LFG, LLC (incorporated by reference to Exhibit 10.17 to Amendment No. 2 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 31, 2021)

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ExhibitNumberDescription
10.15.2†+First Amendment to the Second Amended & Restated Landfill Gas Rights & Production Facilities Agreement, by and between County of Orange and Bowerman Power LFG, LLC (incorporated by reference to Exhibit 10.18 to Amendment No. 2 to our Registration Statement on Form S-1(File No. 333-251312), filed December 31, 2021)
10.15.3†+Third Amendment to the Landfill Gas Rights and Production Facilities Agreement and Settlement Agreement, dated as of June 27, 2023, by and between the County of Orange and Bowerman Power LFG, LLC (incorporated by reference to Exhibit 10.1 of our Current Report on Form 8-K, filed June 30, 2023)
10.16+Renewable Power Purchase and Sale Agreement by and between the City of Anaheim and Bowerman Power LFG, LLC (incorporated by reference to Exhibit 10.19 to Amendment No. 2 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 31, 2021)
10.17†+Amended and Restated Gas Sale and Purchase Agreement, by and between McCarty Road Landfill TX, LP and GSF Energy, LLC (incorporated by reference to Exhibit 10.20 to Amendment No. 3 to our Registration Statement on Form S-1 (File No. 333-251312), filed January 8, 2021)
10.18†+Third Amended and Restated Gas Lease Agreement, dated January 1, 2018, by and between Rumpke Sanitary Landfill, Inc. and GSF Energy, LLC (incorporated by reference to Exhibit 10.24 to Amendment No. 2 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 31, 2021)
10.19†+Amended and Restated Landfill Gas Purchase and Sale Agreement, dated October 17, 2016, by and between Waste Management of Texas, Inc. and TX LFG Energy, LP (incorporated by reference to Exhibit 10.35 to Amendment No. 2 to our Registration Statement on Form S-1 (File No. 333-251312), filed December 31, 2021)
10.20Fifth Amended and Restated Loan Agreement and Secured Promissory Note, dated as of March 5, 2025 by and between Montauk Holdings Limited and Montauk Renewables (incorporated by reference to Exhibit 10.1 of our Current Report on Form 8-K, filed on March 7, 2025)
19.1Insider Trading Policy
21.1List of Subsidiaries of Montauk Renewables, Inc.
23.1Consent of Independent Registered Public Accounting Firm
24.1Power of Attorney
31.1Certification of the Chief Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act
31.2Certification of the Chief Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act
32.1Certification of the Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as adopted Pursuant to Section 906 of the Sarbanes- Oxley Act of 2002
32.2Certification of the Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as adopted Pursuant to Section 906 of the Sarbanes- Oxley Act of 2002
97.1Clawback Policy (incorporated by reference to Exhibit 97.1 of Annual Report on Form 10-K filed on March 14, 2024)
99.2+Consortium Agreement, dated as of January 24, 2021, by and among the stockholders named therein (incorporated by reference to Exhibit 99.2 of Annual Report on Form 10-K filed March 31, 2021)
101.INSInline XBRL Instance Document–the instance document does not appear in the Interactive Data File as its XBRL tags are embedded within the Inline XBRL document
101.SCHInline XBRL Taxonomy Extension Schema with Embedded Linkbase Documents
104Cover page formatted as Inline XBRL and contained in Exhibit 101

^ Exhibits marked with a (^) are management contracts or compensation plans or arrangements.

  • Exhibits marked with a (+) exclude certain immaterial schedules and exhibits pursuant to the provisions of Regulation S-K, Item 601(a)(5) or Item 601(a)(6). A copy of any of the omitted schedules and exhibits pursuant to Regulation S-K, Item 601(a)(5) will be furnished to the Securities and Exchange Commission upon request.

† Exhibits marked with a (†) exclude certain portions of the exhibit pursuant to Item 601(b)(10)(iv) of Regulation S-K. A copy of the omitted portions will be furnished to the Securities and Exchange Commission upon request.

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