MNTK

EX-99.1

2 d85806dex991.htm

EX-99.1

EX-99.1

Exhibit 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 2026

Dollar amounts presented herein are in United States Dollars

SALIENT FEATURES

2026

Six months Ended 30 June

2025 Six months Ended 30 June

Percentage change

Revenue

($ ‘000 )

100 447

87 730

14 %

EBITDA

($ ‘000 )

21 066

11 360

85 %

Headline earnings/(loss)

($ ‘000 )

1 084

(4 008 )

127 %

Earnings/(loss) per share

($

)

0.00

(0.04 )

100 %

Headline earnings/(loss) per common share

($

)

0.01

(0.03 )

133 %

Net asset value per common share

($

)

1.85

1.78

4 %

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

2026

Six months

Ended 30 June

2025

Six months

Ended 30 June

Gross $‘000

Net $‘000

Gross $‘000

Net $‘000

Net income/(loss) attributable to common shareholders

231

(5 951 )

Adjustments

(Gain) /loss on disposal of plant and Equipment

(13 )

(10 )

36

28

Impairment of plant and equipment

1 093

863

2 424

1 915

Headline earnings/(loss)

1 084

(4 008 )

Basic and headline earnings/(loss) per common share (US Dollars)

Earnings/(loss)

0.00

(0.04 )

Headline earnings/(loss)

0.01

(0.03 )

Weighted-average common shares outstanding (‘000)(1)

143 245

142 875

Diluted earnings/(loss) per common share (US Dollars)

Earnings/(loss)

0.00

(0.04 )

Headline earnings/(loss)

0.01

(0.03 )

Weighted-average common shares outstanding for diluted (‘000)

143 917

142 875

(1)

The common share outstanding as of June 30, 2026 is as reported in the quarterly report on Form 10-Q for the fiscal quarter ended June 30, 2026, filed with the Securities and Exchange Commission on August 5, 2026.

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 2026. The Form 8-K discloses the press release announcing the quarterly results for the second quarter ended 30 June 2026.

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

https://www.sec.gov/ix?doc=/Archives/edgar/data/0001826600/000119312526335335/mntk-20260630.htm

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

https://www.sec.gov/ix?doc=/Archives/edgar/data/0001826600/000119312526335293/mntk-20260805.htm

DIRECTORS’ STATEMENT

This short-form announcement is the

responsibility of the Company’s Board of Directors.

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 August 6, 2026, via the JSE link https://senspdf.jse.co.za/documents/2026/jse/isse/MKRE/HY26.pdf. The full announcement is also available on the Company’s website https://ir.montaukrenewables.com/ to comply with paragraph 6.35(c)(i) of the JSE Listings Requirements.

August 6, 2026

Directors: JA Copelyn (Chairman)*###, SF McClain (Chief Executive Officer)#,

MH Ahmed*###, TG Govender*###, J Cunningham*#, Y Shaik* ###

*

Non-executive; #United States of America; ### Republic of South Africa

Company secretary: J Ciroli

Registered office: 5313 Campbells Run Road, Suite 200, Pittsburgh, PA 15205

Website: https://ir.montaukrenewables.com/

Montauk Renewables is primary listed on the Nasdaq and secondary listed on the JSE.

Sponsor:

Investec Bank Limited

EX-99.1

2 mntk-ex99_1.htm

EX-99.1

EX-99.1

Exhibit 99.1

Montauk Renewables Announces Second Quarter 2026 Results

PITTSBURGH, PENNSYLVANIA – August 5, 2026—Montauk Renewables, Inc. (“Montauk” or “the Company”) (NASDAQ: MNTK), a renewable energy company specializing in the management, recovery, and conversion of biogas into renewable natural gas (“RNG”), today announced financial results for the second quarter ended June 30, 2026.

Second Quarter Highlights:

• Revenues of $54.0 million, increased 19.7 % year-over-year

• Net income of $0.2 million, increased 104.1% year-over-year

• Non-GAAP Adjusted EBITDA of $12.3 million, increased 144.5% year-over-year

• RNG production of 1.5 million MMBtu, increased 3% year-over-year

• RINs from operations sold of 14.3 million, increased 29.1% year-over-year

In July 2026, we began generating power for sale from our Turkey, North Carolina facility. This production of power is expected to be eligible to generate both swine RECs and enhanced RECs in subsequent months. As we work to increase the volumes of power and RECs that are able to be generated from our volume of produced syngas, we have identified specific programming modifications to our installed electrical switchgear. The installation of these modifications will provide for both the increase in production volumes as well as enhance protection of our processing equipment and electrical transformers. We expect to have all programming completed by mid-August and consistently generate power and RECs from all available collected feedstock volumes.

We continue to progress with our installation of feedstock collection at our targeted 400 thousand to 450 thousand hog spaces. As of the end of July, we have entered into long term agreements with over fifty separate farming locations providing us access to at least 350 thousand hog spaces. We are currently able to collect from more than 250 thousand hog spaces and will continue farm site collection equipment installations during the second half of 2026.

Second Quarter Financial Results

Total revenues in the second quarter of 2026 were $54.0 million, an increase of $8.9 million (19.7%) compared to $45.1 million in the second quarter of 2025. The increase is primarily related to environmental attribute revenues from RINs sold related to the distribution of RINs from our GreenWave joint venture, which had no RINs distributed and sold in the second quarter of 2025. Our second quarter of 2026 RNG volumes sold under fixed/floor-price contracts decreased approximately 80.0% compared to the second quarter of 2025 due to the expiration of fixed price pathway contracts. Our RNG commodity revenue decreased approximately 63.7% which was offset by an increase in RINs sold of 29.1%. Our RINs generated and unseparated decreased approximately 95.4% as a result of the transition to the Biogas Regulatory Reform Rule in 2025.

Operating and maintenance expenses for our RNG facilities in the second quarter of 2026 were $15.6 million, a decrease of $1.4 million (8.2%) compared to $17.0 million in the second quarter of 2025. Our McCarty facility operating and maintenance expenses decreased approximately $0.9 million primarily due to the timing of maintenance of gas processing equipment. Our Apex facility operating and maintenance expenses decreased approximately $0.5 million primarily due to timing of gas processing preventative maintenance. Our Renewable Electricity Generation operating and maintenance expenses in the second quarter of 2026 were $5.1 million, an increase of $0.3 million (5.3%) compared to $4.8 million in the second quarter of 2025. The increase was primarily driven by an increase in non-capitalizable costs of $1.2 million for our Montauk Ag Renewables project. Our Bowerman facility operating and maintenance expenses decreased approximately $0.7 million, primarily driven by the decreased wellfield operational costs and timing of gas processing preventative maintenance. We recorded approximately $8.3 million of expenses in the second quarter of 2026 related to the cost of RINs distributed from GreenWave and the costs related to pathway dispensing associated with our dispensing RNG in exclusive unique and proprietary pathways. Total general and administrative expenses were $7.7 million in the second quarter of 2026, a decrease of $1.4 million (15.2%) compared to $9.1 million in the second quarter of 2025, driven by one-time accelerated vesting of $1.6 million from certain restricted share awards in 2025.

Operating loss in the second quarter of 2026 was $0.1 million compared to $2.4 million in the second quarter of 2025. We recognized income of $3.8 million from our GreenWave joint venture in the second quarter of 2026. Net

1

income in the second quarter of 2026 was $0.2 million compared to a net loss of $5.5 million in the second quarter of 2025.

Second Quarter Operational Results

We produced 1.5 million Metric Million British Thermal Units (“

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