NASDAQ · MNTK

Montauk Renewables, Inc.

Closing price · Nov 13, 2026 $0.9542
Last insider buy price $1.45 Paid by Director John Copelyn on May 11, 2026 (Form 4). Not today's price.

Latest quarter · ended Jun 30, 2026

Sales grew and cash improved

descriptionFiled Aug 5, 2026
Revenue growthFaster
+19.7%
Quarter ended Sep 30, 2024: +18.4% sales vs. a year beforeQuarter ended Dec 31, 2024: −40.8% sales vs. a year beforeQuarter ended Mar 31, 2025: +9.8% sales vs. a year beforeQuarter ended Jun 30, 2025: +4.1% sales vs. a year beforeQuarter ended Sep 30, 2025: −31.3% sales vs. a year beforeQuarter ended Dec 31, 2025: +56.7% sales vs. a year beforeQuarter ended Mar 31, 2026: +9.0% sales vs. a year beforeQuarter ended Jun 30, 2026: +19.7% sales vs. a year before
Sep '24Jun '26
$54M vs. $45.1M a year ago
Gross marginSteady
43.8%
Quarter ended Sep 30, 2024: 43.8% gross margin
Sep '24Sep '24
Cash from operationsBetter
$14.6M
Quarter ended Sep 30, 2024: $28.6M cash from operationsQuarter ended Dec 31, 2024: $724K cash from operationsQuarter ended Mar 31, 2025: $9.14M cash from operationsQuarter ended Jun 30, 2025: $8.21M cash from operationsQuarter ended Sep 30, 2025: $12.7M cash from operationsQuarter ended Dec 31, 2025: $337K cash from operationsQuarter ended Mar 31, 2026: $15.8M cash from operationsQuarter ended Jun 30, 2026: $14.6M cash from operations
Sep '24Jun '26
+78% from $8.21M a year ago
Share countSteady
+0.1%
Quarter ended Sep 30, 2024: 143.37M sharesQuarter ended Dec 31, 2024: 142.43M sharesQuarter ended Mar 31, 2025: 142.43M sharesQuarter ended Jun 30, 2025: 142.26M sharesQuarter ended Sep 30, 2025: 142.26M sharesQuarter ended Dec 31, 2025: 142.34M sharesQuarter ended Mar 31, 2026: 142.34M sharesQuarter ended Jun 30, 2026: 142.34M shares
Sep '24Jun '26
142.34M shares vs. 142.26M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Mixed Insiders: as of Nov 13 Funds: as of Jun 30, 2026
−1000+100 0
  • info
    No real insider sales in 12 months. Planned 10b5-1 sales and tax withholding are left out.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

93 funds report owning MNTK, up from 92

Holdings as of Jun 30, 2026
New17
Added31
Held22
Trimmed23
Sold out16

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale
CEOCFOOther officersDirectorsDecJanFebMarAprMayJunJulAugSepOctNovStock grant · May 20 · 585,824 sh · 2 peopleStock grant · May 20 · 383,183 shStock grant · May 20 · 302,982 shOpen-market buy · May 11 · $25.4K
CEOCFOOther officersDirectorsDecFebAprJunAugOctStock grant · May 20 · 585,824 sh · 2 peopleStock grant · May 20 · 383,183 shStock grant · May 20 · 302,982 shOpen-market buy · May 11 · $25.4K

Last 12 months. No real trades in the last 6.

Showing 1 real trade. Hidden: 4 stock grants. Those happen on a schedule and say little about what an insider thinks. Bigger dot means a bigger trade.

Real trades, newest first

May 11 John Copelyn Director Open-market buy $25.4K 17,506 sh at $1.45

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Top holders

Biggest funds in MNTK

As of Jun 30, 2026
FundOwnsValueChange
BlackRock, Inc.3.3%$7.35M+12%
Vanguard Capital Management LLC1.9%$4.22M+1%
Geode Capital Management, LLC1.3%$2.93M+7%
Baader Bank Aktiengesellschaft1.1%$2.5MSame
State Street Corp1.0%$2.14MSame

"Owns" is shares reported divided by shares outstanding.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast · Your watchlist