EX-99.1

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”)

UNAUDITED CONSOLIDATED RESULTS

For the six months ended 30 June 2025

Dollar amounts presented herein are in United States Dollars

SALIENT FEATURES


		2025 Six months Ended 30 June			2024 Six months Ended 30 June		Percentage change
Revenue	($‘000)		87 730			82 125		7	%
EBITDA	($‘000)		11 360			15 603		(27	%)
Headline (loss)/ earnings	($‘000)		(4 008	)		1 601		(350	%)
(Loss) / earnings per share	($)		(0.04	)		0.01		(500	%)
Headline (loss) / earnings per common share	($)		(0.03	)		0.01		(400	%)
Net asset value per common share	($)		1.78			1.80		(1	%)

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 earnings


	2025 Six months Ended 30 June					2024 Six months Ended 30 June
	Gross $‘000		Net $‘000			Gross $‘000		Net $‘000
Net (loss) / income attributable to common shareholders				(5 951	)				1 138
Adjustments
Loss on disposal of plant and Equipment		36		28			71		43
Impairment of plant and equipment		2 424		1 915			699		420
Headline (loss) / earnings				(4 008	)				1 601
Basic and headline earnings per common share (US Dollars)
Earnings				(0.04	)				0.01
Headline earnings				(0.03	)				0.01
Weighted-average common shares outstanding (‘000)(1)				142 875					142 028
Diluted earnings per common share (US Dollars)
Earnings				(0.04	)				0.01
Headline earnings				(0.03	)				0.01
Weighted-average common shares outstanding for diluted (‘000)				142 875					142 252

(1)	The common share outstanding as of June 30, 2025 is as reported in the quarterly report on Form 10-Q for the fiscal quarter ended June 30, 2025, filed with the Securities and Exchange Commission on August 6, 2025.

FORM 10-Q QUARTERLY REPORT and FORM 8-K CURRENT REPORT

Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934, Montauk Renewables stockholders are advised that a Form 10-Q and Form 8-K has been filed with the SEC. The Form 10-Q disclose the quarterly results and related disclosures for the quarterly period ended 30 June 2025. The Form 8-K discloses the press release announcing the quarterly results for the second quarter ended 30 June 2025.

A copy of the Form 10-Q can be found at:

https://www.sec.gov/ix?doc=/Archives/edgar/data/1826600/000095017025104181/mntk-20250630.htm

A copy of the Form 8-K can be found at:

https://www.sec.gov/ix?doc=/Archives/edgar/data/1826600/000095017025104161/mntk-20250806.htm

DIRECTORS’ STATEMENT

This short-form announcement is the responsibility of the Company’s Board of Directors.