Montauk Renewables, Inc.

MNTKNASDAQUtilities● Active

$1.70

+$0.04(+2.11%)

Market Cap$241268231

P/E Ratio—

52W High$2.78

52W Low$1.07

Avg Volume300K

Open$1.68

Beta0.56

Insider Trades Ownership Employees

Montauk Renewables, Inc. (MNTK) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · MNTK · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

∞

Buy/Sell (by trades)

Overall sentiment

BULLISH

↑ Buy 100%Active transactions only · RSU vesting excluded0% Sell ↓

Montauk Renewables, Inc. insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

MNTK insider buying and selling by quarter

MNTK insider selling · MNTK insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

1.3M645K0

2022 Q4

2023 Q2

2023 Q3

2023 Q4

2024 Q2

2024 Q4

2025 Q4

2026 Q2

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 8, 2026

Active insiders

Most active in past 12 months · MNTK ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

MNTK executive sell shares · MNTK board member insider trading · MNTK insider trading SEC filing

Showing 35 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
May 20, 2026	Shaw James A COO	Award	282,842	—	—	477,387	Form 4
May 20, 2026	McClain Sean F President & CEO · Director	Award	383,183	—	—	1,141,172	Form 4
May 20, 2026	Van Asdalan Kevin A CFO	Award	302,982	—	—	497,493	Form 4
May 20, 2026	Ciroli John Chief Legal Officer	Award	302,982	—	—	470,772	Form 4
May 11, 2026	Copelyn John A Director	Purchase	17,506	$1.45	$25K	17,506	Form 4
Nov 24, 2025	Frank Sharon R VP Environ Health & Safety	Other	2,748	$1.67	$5K	39,275	Form 4
Nov 24, 2024	Frank Sharon R VP Environ Health & Safety	Other	2,748	$4.46	$12K	42,023	Form 4
Nov 24, 2023	Frank Sharon R VP Environ. Health & Safety	Other	2,658	$9.09	$24K	44,771	Form 4
Dec 1, 2022	Frank Sharon R VP Environ. Health & Safety	Other	2,748	$10.01	$28K	47,429	Form 4
Nov 28, 2022	Hill Scott E VP of Business Development	Sale	101,797	$12.02	$1.22M⚡	622,810	Form 4
Nov 28, 2022	Hill Scott E VP of Business Development	Sale	2,350	$12.68	$30K	620,460	Form 4
Nov 28, 2022	McClain Sean F President and CEO	Sale	57,750	$12.07	$697K	760,239	Form 4
Nov 28, 2022	McClain Sean F President and CEO	Sale	2,250	$12.68	$29K	757,989	Form 4
Jan 28, 2022	McClain Sean F President and CEO · Director	Other	87	$10.01	$871	817,989	Form 4
Jan 28, 2022	Ciroli John VP, GC and Secretary	Other	87	$10.01	$871	167,790	Form 4
Jan 28, 2022	Hill Scott E VP of Business Development	Other	87	$10.01	$871	724,607	Form 4
Jan 28, 2022	Van Asdalan Kevin A CFO and Treasurer	Other	87	$10.01	$871	194,511	Form 4
Jan 28, 2022	Shaw James A Vice President of Operations	Other	87	$10.01	$871	194,545	Form 4
Jan 28, 2022	Frank Sharon R VP Environ. Health & Safety	Other	87	$10.01	$871	50,177	Form 4
Dec 1, 2021	Frank Sharon R VP Environ. Health & Safety	Award	50,000	—	—	50,264	Form 4
Jan 28, 2021	Van Asdalan Kevin A CFO and Treasurer	Award	354,161	—	—	354,425	Form 4
Jan 28, 2021	Van Asdalan Kevin A CFO and Treasurer	Other	159,827	$11.38	$1.82M⚡	194,598	Form 4
Jan 28, 2021	Van Asdalan Kevin A CFO and Treasurer	Award	264	—	—	264	Form 4
Jan 28, 2021	McClain Sean F President and CEO · Director	Award	695,889	—	—	1,208,364	Form 4
Jan 28, 2021	McClain Sean F President and CEO · Director	Other	313,455	$11.38	$3.57M⚡	894,909	Form 4

Shaw James A

COO

Award

Date

May 20

282,842

Price

—

Value

—

View Form 4 on SEC.gov

McClain Sean F

President & CEO · Director

Award

Date

May 20

383,183

Price

—

Value

—

View Form 4 on SEC.gov

Van Asdalan Kevin A

CFO

Award

Date

May 20

302,982

Price

—

Value

—

View Form 4 on SEC.gov

Ciroli John

Chief Legal Officer

Award

Date

May 20

302,982

Price

—

Value

—

View Form 4 on SEC.gov

Copelyn John A

Director

Purchase

Date

May 11

17,506

Price

$1.45

Value

$25K

View Form 4 on SEC.gov

Frank Sharon R

VP Environ Health & Safety

Other

Date

Nov 24

2,748

Price

$1.67

Value

$5K

View Form 4 on SEC.gov

Frank Sharon R

VP Environ Health & Safety

Other

Date

Nov 24

2,748

Price

$4.46

Value

$12K

View Form 4 on SEC.gov

Frank Sharon R

VP Environ. Health & Safety

Other

Date

Nov 24

2,658

Price

$9.09

Value

$24K

View Form 4 on SEC.gov

Frank Sharon R

VP Environ. Health & Safety

Other

Date

Dec 1

2,748

Price

$10.01

Value

$28K

View Form 4 on SEC.gov

Hill Scott E

VP of Business Development

Sale

Date

Nov 28

101,797

Price

$12.02

Value

$1.22M ⚡

View Form 4 on SEC.gov

Hill Scott E

VP of Business Development

Sale

Date

Nov 28

2,350

Price

$12.68

Value

$30K

View Form 4 on SEC.gov

McClain Sean F

President and CEO

Sale

Date

Nov 28

57,750

Price

$12.07

Value

$697K

View Form 4 on SEC.gov

McClain Sean F

President and CEO

Sale

Date

Nov 28

2,250

Price

$12.68

Value

$29K

View Form 4 on SEC.gov

McClain Sean F

President and CEO · Director

Other

Date

Jan 28

Price

$10.01

Value

$871

View Form 4 on SEC.gov

Ciroli John

VP, GC and Secretary

Other

Date

Jan 28

Price

$10.01

Value

$871

View Form 4 on SEC.gov

Hill Scott E

VP of Business Development

Other

Date

Jan 28

Price

$10.01

Value

$871

View Form 4 on SEC.gov

Van Asdalan Kevin A

CFO and Treasurer

Other

Date

Jan 28

Price

$10.01

Value

$871

View Form 4 on SEC.gov

Shaw James A

Vice President of Operations

Other

Date

Jan 28

Price

$10.01

Value

$871

View Form 4 on SEC.gov

Frank Sharon R

VP Environ. Health & Safety

Other

Date

Jan 28

Price

$10.01

Value

$871

View Form 4 on SEC.gov

Frank Sharon R

VP Environ. Health & Safety

Award

Date

Dec 1

50,000

Price

—

Value

—

View Form 4 on SEC.gov

Van Asdalan Kevin A

CFO and Treasurer

Award

Date

Jan 28

354,161

Price

—

Value

—

View Form 4 on SEC.gov

Van Asdalan Kevin A

CFO and Treasurer

Other

Date

Jan 28

159,827

Price

$11.38

Value

$1.82M ⚡

View Form 4 on SEC.gov

Van Asdalan Kevin A

CFO and Treasurer

Award

Date

Jan 28

264

Price

—

Value

—

View Form 4 on SEC.gov

McClain Sean F

President and CEO · Director

Award

Date

Jan 28

695,889

Price

—

Value

—

View Form 4 on SEC.gov

McClain Sean F

President and CEO · Director

Other

Date

Jan 28

313,455

Price

$11.38

Value

$3.57M ⚡

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

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▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About MNTK insider trading

MNTK insider trades

Montauk Renewables, Inc. (MNTK) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Shaw James A (COO), McClain Sean F (President & CEO · Director), Van Asdalan Kevin A (CFO). Over the past 12 months, 5 insiders have filed transactions with the SEC. MNTK insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Montauk Renewables, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

MNTK insider trading · 5 questions

The insiders of Montauk Renewables, Inc. (MNTK) include executives and directors such as Shaw James A (COO), McClain Sean F (President & CEO · Director), Van Asdalan Kevin A (CFO), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

MNTK board member insider tradingwho are MNTK insidersMNTK insider rosterMontauk Renewables, Inc. executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026