# EDGAR Filing Document

**Accession Number:** 0001826600
**File Stem:** 0001193125-26-243221
**Filing Date:** 2026-5
**Character Count:** 5201
**Document Hash:** c2652ce91068fac9defa03d2b6a2aa55
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-243221.hdr.sgml**: 20260528

**ACCESSION NUMBER**: 0001193125-26-243221

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 11

**CONFORMED PERIOD OF REPORT**: 20260526

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**FILED AS OF DATE**: 20260528

**DATE AS OF CHANGE**: 20260528

**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:** 261029542

**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): May 26, 2026

## Montauk Renewables, Inc.

#### (Exact name of registrant as specified in its charter)

---

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

---

#### 5313 Campbells Run Road, Suite 200

#### Pittsburgh, PA 15205

#### (Address of principal executive offices) (Zip Code)
(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, par value $0.01 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 5.07** | **Submission of Matters to a Vote of Security Holders.**  |

---

On May 26, 2026, Montauk Renewables, Inc. (the "Company") held its 2026 Annual Meeting of Stockholders (the "Annual Meeting"). Set forth below are the final voting results for each of the matters submitted to a vote of the stockholders at the Annual Meeting.

<u>Proposal 1</u>. The two director nominees nominated by the Company's Board of Directors (the "Board") for election to the Board were elected, each for a term that will expire at the annual meeting of stockholders held in 2029, based upon the following votes:

---

| | | | |
|:---|:---|:---|:---|
| **Nominee** | **For** | **Withheld** | **Broker Non-Votes** |
|  Jennifer Cunningham | 95930621 | 1276666 | 4327793 |
|  Sean McClain | 91449396 | 5757891 | 4327793 |

---

<u>Proposal 2</u>. The proposal to ratify the appointment of Grant Thornton LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026 was approved based upon the following votes:

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstentions** | **Broker Non-Votes** |
| 96949187 | 4570221 | 15672 | 0 |

---

------

#### SIGNATURES
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.** |
| Date: May 28, 2026 | By: | /s/ John Ciroli |
|  | Name: | John Ciroli |
|  | Title: | Chief Legal Officer and Secretary |

---