Sign inStart free

Utilities · Gas & Other Services Combined

MNTK Montauk Renewables, Inc. SEC Filings & Insider Trading Activity 2026

company
CIK 182660036 filings
Russell 2000
Follow MNTK for alertsAsk AI about MNTK

MNTK at a glance

Montauk Renewables, Inc. (MNTK, SEC CIK 1826600) filed its latest 10-K annual report on March 11, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on August 6, 2026 and Form 4 insider filings as recently as May 13, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.

  • For the fiscal year ended December 31, 2025 (FY2025), Montauk Renewables, Inc. (MNTK) reported revenue of $176.4 million (up 0.4% from FY2024) and net income of $1.7 million. Diluted EPS was $0.01.
  • As of June 30, 2026, 23 institutional investment managers tracked by SignalX reported holding Montauk Renewables, Inc. (MNTK) shares worth $19.2 million in 13F-HR filings.
  • The most recent insider open-market purchase reported on Form 4 was by Copelyn John A on May 11, 2026 of 17,506 shares at $1.45 per share.

Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).

Revenue · FY2025
$176.4M
+0.4% vs prior year
Insiders · 90 days
0 buys · 0 sells
No open-market trades
13F holders
23 funds
$19.2M · +1 vs prior quarter
Latest 8-K
Aug 6, 2026
Item 2.02

AI 10-Q Quarterly Report Analysis

Latest 10-Q, quarter ended Jun 30, 2026

Management Discussion & Analysis

  • RINs available for sale 14,265, all 14,265 sold in Q2 2026
  • RINs generated but unseparated 137 at June 30, 2026
  • Average D3 RIN index price $2.54 in Q2 2026
  • Turkey facility began generating power for sale in July 2026, with production ramp-up continuing through 2026

Risk Factors

  • Risk factors section not provided in submitted excerpt
  • No new, updated, regulatory, operational, competitive, or financial risks identifiable from available text

AI summary of the MNTK 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K

AI 8-K Current Report Analysis

The most recent material events, by 8-K item

Filed Aug 6, 2026Full analysis →

Item 2.02: Results of Operations and Financial Condition

  • HEPS report covers the six months ended June 30, 2026
  • Filing satisfies Johannesburg Stock Exchange reporting requirements

Item EX-99.1: Item EX-99.1

  • Six-month revenue rose 14% to $100.447M, while EBITDA increased 85% to $21.066M
  • Headline earnings recovered to $1.084M from a $4.008M loss, with headline EPS improving to $0.01
Filed Aug 5, 2026Full analysis →

Item 2.02: Results of Operations and Financial Condition

  • Q2 2026 results for quarter ended June 30, 2026, announced August 5, 2026
  • Detailed financial figures and management commentary available in Exhibit 99.1 press release

Item EX-99.1: Item EX-99.1

  • Q2 revenue reached $54.0M, up 19.7% YoY, while net income turned positive at $0.2M from a $5.5M loss
  • Adjusted EBITDA surged 144.5% to $12.3M, driven largely by $3.8M of GreenWave joint-venture income
Filed May 28, 2026Full analysis →

Item 5.07: Submission of Matters to a Vote of Security Holders

  • Both director nominees elected through 2029; Jennifer Cunningham received 95,930,621 votes and Sean McClain 91,449,396
  • Sean McClain’s 5,757,891 withheld votes exceeded Jennifer Cunningham’s 1,276,666, signaling comparatively weaker shareholder support

AI summaries of MNTK 8-K current reports filed with the SEC. What 8-K item codes mean

SignalX for MNTK

Don't miss the next MNTK filing

  • Alerts as it files. A push when MNTK files an 8-K or an insider trades.
  • Fund moves. Which tracked funds opened, added or cut MNTK, by share count.
  • Ask anything. An AI agent that reads every MNTK filing and answers with sources.
Follow MNTK for alertsAsk AI about MNTK
Compare plans →

MNTK alerts on your phone. Follow it in the SignalX Android app.

Get it on Google Play

Recent Insider Transactions (Form 4)

Latest reported trades by officers, directors and 10% owners

InsiderTypeDatePrice
Copelyn John ABuyMay 11, 2026$1.45
Copelyn John ABuyMay 11, 2026$1.45
Frank Sharon RFNov 24, 2025$1.67
Insider trades across all companies →Which insider buys matter →

Financial Summary
XBRL

Annual financial summary from SEC XBRL data
MetricFY2023FY2024FY2025
Profitability
Revenue$174.9M$175.7M$176.4M
Operating Income-$16.1M$852K
Net Income$14.9M$9.7M$1.7M
Op. Margin-9.2%0.5%
Net Margin8.5%5.5%1.0%
Balance Sheet
Total Assets-$349.0M$435.5M
Equity$250.2M$257.4M$263.1M
ROE6.0%3.8%0.7%
Per Share
EPS-$0.07$0.01
Cash Flow
Operating CF-$43.8M$30.3M
CapEx$63.1M$62.3M$116.5M

Source: XBRL data in Montauk Renewables, Inc. (MNTK)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →

13F Fund Holdings: Quarterly Trend

Latest: Q2 2026

Aggregate MNTK share value held by 13F filers tracked by SignalX, by quarter.

Quarterly totals table
MNTK shares held by 13F filers tracked by SignalX, by quarter
QuarterFundsTotal value
Q2 202623$19.2M
Q1 202622$13.5M
Q4 202522$20.8M
Q3 202522$26.7M
Q2 202521$28.7M
Q1 202516$17.1M
Q4 202413$30.6M
Q3 202410$20.3M
Position changes: Q1 2026 → Q2 2026
Top Buyers
Top Sellers
New Positions
Closed Positions
None this quarter.

Source: 13F-HR filings on SEC EDGAR (aggregated from 149 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work

MNTK filing archive

AI analysis pages for each 10-K, 10-Q and 8-K

Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling dateAnalysisSEC
8-KAug 6, 2026Analysis-
10-QAug 5, 2026Analysis
8-KAug 5, 2026Analysis-
8-KMay 28, 2026Analysis
4May 13, 2026-
10-QMay 6, 2026Analysis
8-KMay 6, 2026Analysis
8-KMar 12, 2026Analysis-
10-KMar 11, 2026-
8-KMar 11, 2026Analysis-
8-KJan 7, 2026-
4Nov 26, 2025-
SC 13DNov 10, 2025-
10-QNov 5, 2025Analysis
10-QAug 6, 2025-
10-QMay 8, 2025-
10-KMar 14, 2025-
10-QNov 12, 2024-
10-QAug 8, 2024-
10-QMay 9, 2024-
10-KMar 14, 2024-
10-QNov 9, 2023-
10-QAug 9, 2023-
10-QMay 10, 2023-
10-KMar 16, 2023-

Related Utilities companies

All Utilities →

MNTK SEC filings: frequently asked questions

Which institutions hold MNTK stock?

As of June 30, 2026, the largest Montauk Renewables, Inc. (MNTK) holders among the 13F filers tracked by SignalX were BlackRock ($7.3 million), Vanguard Capital Management LLC ($4.2 million), State Street Corp ($2.1 million), Northern Trust ($836,000), Vanguard Portfolio Management LLC ($732,000). 13F-HR reports are filed up to 45 days after each quarter ends.

What was MNTK's revenue in fiscal year 2025?

For the fiscal year ended December 31, 2025 (FY2025), Montauk Renewables, Inc. (MNTK) reported revenue of $176.4 million (up 0.4% from FY2024) and net income of $1.7 million. Diluted EPS was $0.01. The figures come from the XBRL data in the 10-K.

What did MNTK report in its latest 8-K?

Montauk Renewables, Inc. (MNTK) filed an 8-K on August 6, 2026 reporting Item 2.02 (Results of Operations and Financial Condition). HEPS report covers the six months ended June 30, 2026.

What are the latest MNTK SEC filings?

Montauk Renewables, Inc. (MNTK) filed its latest 10-K annual report on March 11, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on August 6, 2026 and a Form 4 insider filing on May 13, 2026.

What is MNTK's SEC CIK number?

Montauk Renewables, Inc. (MNTK)'s SEC Central Index Key (CIK) is 1826600. EDGAR lists every MNTK filing under that number.

Ask anything about MNTK

The research agent reads MNTK's filings, financials, insider trades and 13F holders, then answers with sources.

Start free