Audited consolidated results for the fiscal year ended 31 December 2021 MONTAUK RENEWABLES, INC. Incorporated in the United States of America Company number: 85-3189583 NASDAQ share code: MNTK JSE share code: MKR ISIN: US61218C1036 (“Montauk Renewables” or the “Company”) AUDITED CONSOLIDATED RESULTS For the fiscal year ended 31 December 2021 Dollar amounts presented herein are in United States Dollars For the year For the year ended 31 December ended 31 December Percentage SALIENT FEATURES 2021 2020 Change Revenue ($’000) 148 127 100 383 48% EBITDA ($’000) 25 430 25 063 1% Headline (loss)/profit ($’000) (2 938) 3 823 (177%) Basic (loss)/earnings per share ($) (0.03) 0.03 (198%) Headline (loss)/earnings per common share ($) (0.02) 0.03 (176%) Net asset value per common share ($) 1.29 1.13 14% DECLARATION OF CASH DIVIDEND The directors have resolved not to declare a final dividend to focus financial resources on the continued development of the Company’s operations portfolio. USE OF NON-GAAP MEASURES This report was prepared for the purpose of complying with the reporting requirements of the Johannesburg Stock Exchange and includes certain non-GAAP measures, such as headline earnings and headline earnings per common share, and related reconciliations. Reconciliation of headline (loss) / earnings 2021 2020 Gross $’000 Net $’000 Gross $’000 Net $’000 Net (loss) / income attributable to common shareholders (4 528) 4 603 Adjustments Loss/(gains) on disposal of plant and equipment 822 649 (1 339) (1 058) Impairment of plant and equipment 1 191 941 — — Impairment of intangible assets — — 278 278 Headline (loss) / earnings (2 938) 3 823 Basic and headline (loss) / earnings per common share (US Dollars) (Loss) / earnings (0.03) 0.03 Headline (loss) / earnings (3) (0.02) 0.03 Weighted-average common shares outstanding (‘000)(1)(2) 141 015 140 663 Diluted (loss) / earnings per common share (US Dollars) (Loss) / earnings (3) (0.03) 0.03 Headline (loss) / earnings (3) (0.02) 0.03 Weighted-average common shares outstanding for diluted earnings (‘000)(1) (2)(3) 144 913 141 058 (1) The common share outstanding as of December 31, 2021 is as reported in the annual report on Form 10-K for the fiscal year ended December 31, 2021, filed with the Securities and Exchange Commission on March 16, 2022. (2) On January 26, 2021, the Company closed its IPO. The pro forma adjustments give effect to per share data as if the IPO and associated transactions had occurred at the year ended December 31, 2020 using share amounts at the time of the IPO. (3) The December 31, 2021 per share indicators were determined by applying International Financial Reporting Standards. DIRECTORS’ STATEMENT This short-form announcement is the responsibility of the Company’s Board of Directors and is a summary of the information in the detailed financial results announcement. The financial information is only a summary and does not contain full details of the financial results. Any investment decisions by investors and/or shareholders should be based on information contained in the full announcement, accessible from 16 March 2022, via the JSE link (https://senspdf.jse.co.za/documents/2022/jse/isse/MKRE/YE21.pdf) or on the SEC’s website at (https://www.sec.gov/Archives/edgar/data/0001826600/000119312522077310/0001193125-22-077310-index.htm) The full announcement is also available at the Company’s registered office, the offices of the sponsor and may be requested at investor@montaukrenewables.com or MNTK@gatewayir.com free of charge to investors and/or shareholders, during office hours (09:00—17:00) from Mondays to Fridays. 17 March 2022 Directors: JA Copelyn (Chairman)*###, SF McClain (Chief Executive Officer)#, MH Ahmed*, TG Govender*###, MA Jacobson*##, J Cunningham*#, Y Shaik* ### * Non-executive; #United States of America; ##Australia; ### Republic of South Africa Company secretary: J Ciroli Registered office: 680 Andersen Drive, 5th Floor, Pittsburgh, PA 15220 Website: https://ir.montaukrenewables.com/ Sponsor: Investec Bank Limited Date: 17-03-2022 07:05:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of the information published on SENS. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct, indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on, information disseminated through SENS.