OPAL

insider transactions

OPAL Fuels Inc. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Cluster buy signal: 3 different insiders made open-market purchases in the last 90 days, totalling $283.7K.

Net shares · 90d

+140.0K

140.0K buy · 0 sell

Net value · 90d

$283.7K

$283.7K in · $0 out

Sentiment · 90d

Net buying

100% buying · 0% selling

Open-market trades · 90d

140.0K buy · 0 sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Buy·P
Jun 11, 26

Scott Mcdougald Sutton

Director

$97.5K

50.0K sh · $1.95

Own New
Buy·P
Jun 3, 26

Nadeem Nisar

Director

$11.2K

5.0K sh · $2.25

Own +2%
Buy·P
Jun 2, 26

Nadeem Nisar

Director

$23.2K

10.0K sh · $2.32

Own +4%
Buy·P
May 21, 26

Scott V. Dols

Director

$15.9K

7.9K sh · $2.00

Own +3%
Buy·P
May 20, 26

Scott V. Dols

Director

$9.0K

4.3K sh · $2.06

Own +2%
Buy·P
May 19, 26

Scott V. Dols

Director

$51.5K

25.1K sh · $2.05

Own +12%
Buy·P
May 18, 26

Nadeem Nisar

Director

$10.1K

5.0K sh · $2.02

Own +2%
Buy·P
May 18, 26

Scott V. Dols

Director

$25.5K

12.6K sh · $2.02

Own +6%
Buy·P
May 15, 26

Nadeem Nisar

Director

$19.4K

10.0K sh · $1.94

Own +5%
Buy·P
May 14, 26

Nadeem Nisar

Director

$20.5K

10.0K sh · $2.05

Own +5%
Grant·A
Mar 31, 26

David C Unger KEY

Executive Vice President

$0

56.7K sh

Own New
Grant·A
Mar 31, 26

David C Unger KEY

Executive Vice President

$0

101.4K sh

Own New
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

$0

5.8K sh

Own New
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

$0

57.1K sh

Own +100%
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

$0

23.5K sh

Own New
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

$0

80.7K sh

Own New
Other·F
Mar 31, 26

David C Unger KEY

Executive Vice President

$5.3K

2.1K sh · $2.52

Own -1%
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

—

5.8K sh

Own +3%
Other·F
Mar 31, 26

David C Unger KEY

Executive Vice President

$51.9K

20.6K sh · $2.52

Own -8%
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

—

57.1K sh

Own +30%
Other·F
Mar 31, 26

David C Unger KEY

Executive Vice President

$21.4K

8.5K sh · $2.52

Own -4%
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

—

23.5K sh

Own +13%
Other·F
Mar 31, 26

David C Unger KEY

Executive Vice President

$73.3K

29.1K sh · $2.52

Own -14%
Exercise·M
Mar 31, 26

David C Unger KEY

Executive Vice President

—

80.7K sh

Own +65%
Grant·A
Mar 31, 26

Scott Mcdougald Sutton

Director

$0

54.8K sh

Own +235%
Grant·A
Mar 31, 26

Ashok Vemuri

Director

$0

54.8K sh

Own New
Exercise·M
Mar 31, 26

Ashok Vemuri

Director

$0

66.1K sh

Own New
Exercise·M
Mar 31, 26

Ashok Vemuri

Director

—

66.1K sh

Own +117%
Grant·A
Mar 31, 26

Nadeem Nisar

Director

$0

54.8K sh

Own New
Exercise·M
Mar 31, 26

Nadeem Nisar

Director

$0

66.1K sh

Own New
Exercise·M
Mar 31, 26

Nadeem Nisar

Director

—

66.1K sh

Own +47%
Grant·A
Mar 31, 26

Lance D Moll

Director

$0

54.8K sh

Own +205%
Grant·A
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$0

226.6K sh

Own New
Grant·A
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$0

405.7K sh

Own New
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$0

23.2K sh

Own New
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$0

163.1K sh

Own +100%
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$0

67.2K sh

Own New
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$0

35.9K sh

Own New
Other·F
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$21.1K

8.4K sh · $2.52

Own -2%
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

—

23.2K sh

Own +7%
Other·F
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$148.2K

58.8K sh · $2.52

Own -14%
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

—

163.1K sh

Own +67%
Other·F
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$61.1K

24.2K sh · $2.52

Own -9%
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

—

67.2K sh

Own +34%
Other·F
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

$32.6K

12.9K sh · $2.52

Own -6%
Exercise·M
Mar 31, 26

Jonathan Gilbert Maurer KEY

Co-Chief Executive Officer

—

35.9K sh

Own +20%
Grant·A
Mar 31, 26

James J Martell

Director

$0

54.8K sh

Own New
Exercise·M
Mar 31, 26

James J Martell

Director

$0

66.1K sh

Own New
Exercise·M
Mar 31, 26

James J Martell

Director

—

66.1K sh

Own +161%
Grant·A
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

$0

102.0K sh

Own New
Grant·A
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

$0

182.6K sh

Own New
Exercise·M
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

$0

146.8K sh

Own New
Exercise·M
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

$0

73.4K sh

Own +100%
Other·F
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

$133.4K

52.9K sh · $2.52

Own -27%
Exercise·M
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

—

146.8K sh

Own +313%
Other·F
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

$66.7K

26.5K sh · $2.52

Own -36%
Exercise·M
Mar 31, 26

Kazi Hasan KEY

Chief Financial Officer

—

73.4K sh

Own New
Grant·A
Mar 31, 26

Scott V. Dols

Director

$0

54.8K sh

Own New
Exercise·M
Mar 31, 26

Scott V. Dols

Director

$0

66.1K sh

Own New
Exercise·M
Mar 31, 26

Scott V. Dols

Director

—

66.1K sh

Own +51%
Grant·A
Mar 31, 26

Mark S Comora

Director, 10% Owner

$0

54.8K sh

Own New
Exercise·M
Mar 31, 26

Mark S Comora

Director, 10% Owner

$0

66.1K sh

Own New
Exercise·M
Mar 31, 26

Mark S Comora

Director, 10% Owner

—

66.1K sh

Own +117%
Grant·A
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$0

226.6K sh

Own New
Grant·A
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$0

405.7K sh

Own New
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$0

23.2K sh

Own New
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$0

163.1K sh

Own +100%
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$0

67.2K sh

Own New
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$0

35.9K sh

Own New
Other·F
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$21.1K

8.4K sh · $2.52

Own -2%
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

—

23.2K sh

Own +5%
Other·F
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$148.2K

58.8K sh · $2.52

Own -12%
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

—

163.1K sh

Own +51%
Other·F
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$61.1K

24.2K sh · $2.52

Own -7%
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

—

67.2K sh

Own +24%
Other·F
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

$32.6K

12.9K sh · $2.52

Own -4%
Exercise·M
Mar 31, 26

Adam Comora KEY

Co-Chief Executive Officer

—

35.9K sh

Own +14%
Grant·A
Mar 31, 26

John Coghlin

General Counsel

$0

90.7K sh

Own New
Grant·A
Mar 31, 26

John Coghlin

General Counsel

$0

162.3K sh

Own New
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

$0

10.8K sh

Own New
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

$0

65.3K sh

Own +100%
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

$0

23.5K sh

Own New
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

$0

16.7K sh

Own New
Other·F
Mar 31, 26

John Coghlin

General Counsel

$9.9K

3.9K sh · $2.52

Own -3%
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

—

10.8K sh

Own +8%
Other·F
Mar 31, 26

John Coghlin

General Counsel

$59.3K

23.5K sh · $2.52

Own -14%
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

—

65.3K sh

Own +66%
Other·F
Mar 31, 26

John Coghlin

General Counsel

$21.4K

8.5K sh · $2.52

Own -8%
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

—

23.5K sh

Own +28%
Other·F
Mar 31, 26

John Coghlin

General Counsel

$15.2K

6.0K sh · $2.52

Own -7%
Exercise·M
Mar 31, 26

John Coghlin

General Counsel

—

16.7K sh

Own +23%
Grant·A
Mar 31, 26

Darrell Birck KEY

Executive Vice President

$0

62.3K sh

Own New
Grant·A
Mar 31, 26

Darrell Birck KEY

Executive Vice President

$0

111.6K sh

Own New
Exercise·M
Mar 31, 26

Darrell Birck KEY

Executive Vice President

$0

36.7K sh

Own +100%
Other·F
Mar 31, 26

Darrell Birck KEY

Executive Vice President

$22.5K

8.9K sh · $2.52

Own -24%
Exercise·M
Mar 31, 26

Darrell Birck KEY

Executive Vice President

—

36.7K sh

Own New
Grant·A
Mar 31, 26

Betsy L. Battle

Director

$0

54.8K sh

Own New
Exercise·M
Mar 31, 26

Betsy L. Battle

Director

$0

66.1K sh

Own New
Exercise·M
Mar 31, 26

Betsy L. Battle

Director

—

66.1K sh

Own +117%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 11, 2026	Scott Mcdougald Sutton	Director	Buy P	50.0K	New	$1.95	$97.5K
Jun 3, 2026	Nadeem Nisar	Director	Buy P	5.0K	+2%	$2.25	$11.2K
Jun 2, 2026	Nadeem Nisar	Director	Buy P	10.0K	+4%	$2.32	$23.2K
May 21, 2026	Scott V. Dols	Director	Buy P	7.9K	+3%	$2.00	$15.9K
May 20, 2026	Scott V. Dols	Director	Buy P	4.3K	+2%	$2.06	$9.0K
May 19, 2026	Scott V. Dols	Director	Buy P	25.1K	+12%	$2.05	$51.5K
May 18, 2026	Nadeem Nisar	Director	Buy P	5.0K	+2%	$2.02	$10.1K
May 18, 2026	Scott V. Dols	Director	Buy P	12.6K	+6%	$2.02	$25.5K
May 15, 2026	Nadeem Nisar	Director	Buy P	10.0K	+5%	$1.94	$19.4K
May 14, 2026	Nadeem Nisar	Director	Buy P	10.0K	+5%	$2.05	$20.5K
Mar 31, 2026	David C Unger KEY	Executive Vice President	Grant A	56.7K	New	—	$0
Mar 31, 2026	David C Unger KEY	Executive Vice President	Grant A	101.4K	New	—	$0
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	5.8K	New	—	$0
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	57.1K	+100%	—	$0
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	23.5K	New	—	$0
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	80.7K	New	—	$0
Mar 31, 2026	David C Unger KEY	Executive Vice President	Other F	2.1K	-1%	$2.52	$5.3K
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	5.8K	+3%	—	—
Mar 31, 2026	David C Unger KEY	Executive Vice President	Other F	20.6K	-8%	$2.52	$51.9K
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	57.1K	+30%	—	—
Mar 31, 2026	David C Unger KEY	Executive Vice President	Other F	8.5K	-4%	$2.52	$21.4K
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	23.5K	+13%	—	—
Mar 31, 2026	David C Unger KEY	Executive Vice President	Other F	29.1K	-14%	$2.52	$73.3K
Mar 31, 2026	David C Unger KEY	Executive Vice President	Exercise M	80.7K	+65%	—	—
Mar 31, 2026	Scott Mcdougald Sutton	Director	Grant A	54.8K	+235%	—	$0
Mar 31, 2026	Ashok Vemuri	Director	Grant A	54.8K	New	—	$0
Mar 31, 2026	Ashok Vemuri	Director	Exercise M	66.1K	New	—	$0
Mar 31, 2026	Ashok Vemuri	Director	Exercise M	66.1K	+117%	—	—
Mar 31, 2026	Nadeem Nisar	Director	Grant A	54.8K	New	—	$0
Mar 31, 2026	Nadeem Nisar	Director	Exercise M	66.1K	New	—	$0
Mar 31, 2026	Nadeem Nisar	Director	Exercise M	66.1K	+47%	—	—
Mar 31, 2026	Lance D Moll	Director	Grant A	54.8K	+205%	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Grant A	226.6K	New	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Grant A	405.7K	New	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	23.2K	New	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	163.1K	+100%	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	67.2K	New	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	35.9K	New	—	$0
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Other F	8.4K	-2%	$2.52	$21.1K
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	23.2K	+7%	—	—
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Other F	58.8K	-14%	$2.52	$148.2K
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	163.1K	+67%	—	—
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Other F	24.2K	-9%	$2.52	$61.1K
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	67.2K	+34%	—	—
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Other F	12.9K	-6%	$2.52	$32.6K
Mar 31, 2026	Jonathan Gilbert Maurer KEY	Co-Chief Executive Officer	Exercise M	35.9K	+20%	—	—
Mar 31, 2026	James J Martell	Director	Grant A	54.8K	New	—	$0
Mar 31, 2026	James J Martell	Director	Exercise M	66.1K	New	—	$0
Mar 31, 2026	James J Martell	Director	Exercise M	66.1K	+161%	—	—
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Grant A	102.0K	New	—	$0
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Grant A	182.6K	New	—	$0
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Exercise M	146.8K	New	—	$0
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Exercise M	73.4K	+100%	—	$0
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Other F	52.9K	-27%	$2.52	$133.4K
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Exercise M	146.8K	+313%	—	—
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Other F	26.5K	-36%	$2.52	$66.7K
Mar 31, 2026	Kazi Hasan KEY	Chief Financial Officer	Exercise M	73.4K	New	—	—
Mar 31, 2026	Scott V. Dols	Director	Grant A	54.8K	New	—	$0
Mar 31, 2026	Scott V. Dols	Director	Exercise M	66.1K	New	—	$0
Mar 31, 2026	Scott V. Dols	Director	Exercise M	66.1K	+51%	—	—
Mar 31, 2026	Mark S Comora	Director, 10% Owner	Grant A	54.8K	New	—	$0
Mar 31, 2026	Mark S Comora	Director, 10% Owner	Exercise M	66.1K	New	—	$0
Mar 31, 2026	Mark S Comora	Director, 10% Owner	Exercise M	66.1K	+117%	—	—
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Grant A	226.6K	New	—	$0
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Grant A	405.7K	New	—	$0
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	23.2K	New	—	$0
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	163.1K	+100%	—	$0
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	67.2K	New	—	$0
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	35.9K	New	—	$0
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Other F	8.4K	-2%	$2.52	$21.1K
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	23.2K	+5%	—	—
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Other F	58.8K	-12%	$2.52	$148.2K
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	163.1K	+51%	—	—
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Other F	24.2K	-7%	$2.52	$61.1K
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	67.2K	+24%	—	—
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Other F	12.9K	-4%	$2.52	$32.6K
Mar 31, 2026	Adam Comora KEY	Co-Chief Executive Officer	Exercise M	35.9K	+14%	—	—
Mar 31, 2026	John Coghlin	General Counsel	Grant A	90.7K	New	—	$0
Mar 31, 2026	John Coghlin	General Counsel	Grant A	162.3K	New	—	$0
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	10.8K	New	—	$0
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	65.3K	+100%	—	$0
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	23.5K	New	—	$0
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	16.7K	New	—	$0
Mar 31, 2026	John Coghlin	General Counsel	Other F	3.9K	-3%	$2.52	$9.9K
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	10.8K	+8%	—	—
Mar 31, 2026	John Coghlin	General Counsel	Other F	23.5K	-14%	$2.52	$59.3K
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	65.3K	+66%	—	—
Mar 31, 2026	John Coghlin	General Counsel	Other F	8.5K	-8%	$2.52	$21.4K
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	23.5K	+28%	—	—
Mar 31, 2026	John Coghlin	General Counsel	Other F	6.0K	-7%	$2.52	$15.2K
Mar 31, 2026	John Coghlin	General Counsel	Exercise M	16.7K	+23%	—	—
Mar 31, 2026	Darrell Birck KEY	Executive Vice President	Grant A	62.3K	New	—	$0
Mar 31, 2026	Darrell Birck KEY	Executive Vice President	Grant A	111.6K	New	—	$0
Mar 31, 2026	Darrell Birck KEY	Executive Vice President	Exercise M	36.7K	+100%	—	$0
Mar 31, 2026	Darrell Birck KEY	Executive Vice President	Other F	8.9K	-24%	$2.52	$22.5K
Mar 31, 2026	Darrell Birck KEY	Executive Vice President	Exercise M	36.7K	New	—	—
Mar 31, 2026	Betsy L. Battle	Director	Grant A	54.8K	New	—	$0
Mar 31, 2026	Betsy L. Battle	Director	Exercise M	66.1K	New	—	$0
Mar 31, 2026	Betsy L. Battle	Director	Exercise M	66.1K	+117%	—	—

About OPAL insider trading

This page tracks insider transactions for OPAL Fuels Inc. (OPAL) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.