# EDGAR Filing Document

**Accession Number:** 0001826600
**File Stem:** 0001193125-25-174981
**Filing Date:** 2025-8
**Character Count:** 9990
**Document Hash:** 77e3649b74094d0cc7dbf328e7906225
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-174981.hdr.sgml**: 20250807

**ACCESSION NUMBER**: 0001193125-25-174981

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20250807

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250807

**DATE AS OF CHANGE**: 20250807

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Montauk Renewables, Inc.
- **CENTRAL INDEX KEY:** 0001826600
- **STANDARD INDUSTRIAL CLASSIFICATION:** GAS & OTHER SERVICES COMBINED [4932]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 853189583
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39919
- **FILM NUMBER:** 251191711

**BUSINESS ADDRESS:**
- **STREET 1:** 5313 CAMPBELLS RUN ROAD
- **STREET 2:** SUITE 200
- **CITY:** PITTSBURGH
- **STATE:** PA
- **ZIP:** 15205
- **BUSINESS PHONE:** 4127478700

**MAIL ADDRESS:**
- **STREET 1:** 5313 CAMPBELLS RUN ROAD
- **STREET 2:** SUITE 200
- **CITY:** PITTSBURGH
- **STATE:** PA
- **ZIP:** 15205

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Montauk Energy, Inc.
- **DATE OF NAME CHANGE:** 20200929

?xml version='1.0' encoding='ASCII'? 8-K

### 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): August 7, 2025

## Montauk Renewables, Inc.

#### (Exact Name of Registrant as Specified in Charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **1-39919** | **85-3189583** |
| **(State or other jurisdiction**<br> **of incorporation)** | **(Commission**<br> **File Number)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

#### 5313 Campbells Run Road

#### Suite 200

#### Pittsburgh, PA 15205

#### (Address of principal executive offices) (ZIP Code)

#### Telephone: (412) 747-8700

#### (Registrant's telephone number, including area code)

#### 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:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br> **Symbol(s)** | **Name of each exchange**<br> **on which registered** |
| Common Stock, $0.01 par value per share | MNTK | The Nasdaq Capital Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging Growth Company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

Item 2.02 Results of Operations and Financial Condition.

On August 7, 2025, Montauk Renewables, Inc. filed a headline earnings per share ("HEPS") report with the Johannesburg Stock Exchange ("JSE"), a self-regulatory organization in South Africa, that includes certain historical financial information for the six months ended June 30, 2025. The HEPS report was prepared for the purpose of complying with the reporting requirements of the JSE. A copy of the HEPS report is attached as Exhibit 99.1 to this Current Report on Form 8-K.

The information contained in this Item 2.02, including the exhibit attached hereto, is being furnished and shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act"), or incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, unless such subsequent filing specifically references this Current Report on Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

---

| | |
|:---|:---|
| Exhibit<br>No. | Description |
| 99.1 | [HEPS report, as filed with the JSE, for the six months ended June 30, 2025](d932885dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

------

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.

---

| | | |
|:---|:---|:---|
|  | MONTAUK RENEWABLES, INC. | MONTAUK RENEWABLES, INC. |
| Dated: August 7, 2025 | By: | /s/ Kevin A. Van Asdalan |
|  | Name: | Kevin A. Van Asdalan |
|  | Title: | Chief Financial Officer |

---

## Exhibit 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 2025

Dollar amounts presented herein are in United States Dollars

SALIENT FEATURES

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | | 2025<br>Six months<br>Ended 30 June | 2024<br>Six months<br>Ended 30 June | Percentage<br>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<br> Six months<br> Ended 30 June | 2025<br> Six months<br> Ended 30 June | 2024<br> Six months<br> Ended 30 June | 2024<br> Six months<br> 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 | 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:

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

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

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

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 7, 2025, via the JSE link (https://senspdf.jse.co.za/documents/2025/jse/isse/MKRE/HY25.pdf). The full announcement is also available at the Company's registered office and may be requested at info@montaukenergy.com free of charge to investors and/or shareholders, during office hours (09:00—17:00) from Mondays to Fridays.

August 7, 2025

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