CBT

insider transactions

CABOT CORP — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 365d

-114.4K

0 buy · 114.4K sell

Net value · 365d

-$9.1M

$0 in · $9.1M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 114.4K sell

Net buy / sell volume

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

All transactions

Grant·A
Jun 12, 26

Dumont Lisa M

VP, Controller & CAO

$349

4 sh · $87.65

Own +1%
Grant·A
Jun 12, 26

Kalita Karen A

SVP and General Counsel

$2.5K

28 sh · $87.65

Own +1%
Grant·A
Jun 12, 26

DELGROSSO DOUGLAS G

Director

$2.4K

28 sh · $87.65

Own +1%
Grant·A
Jun 12, 26

Nathoo Raffiq

Director

$760

9 sh · $87.65

Own +1%
Grant·A
Jun 12, 26

McLaughlin Erica KEY

Executive Vice President, CFO

$4.8K

55 sh · $87.65

Own +1%
Grant·A
Jun 12, 26

Masterson William F III KEY

Senior Vice President

$248

3 sh · $87.65

Own +1%
Grant·A
Jun 12, 26

Keohane Sean D KEY

President and CEO

$22.4K

256 sh · $87.65

Own +1%
Grant·A
Mar 31, 26

Nathoo Raffiq

Director

$23.8K

315 sh · $75.31

Own +24%
Grant·A
Mar 13, 26

Keohane Sean D KEY

President and CEO

$21.2K

306 sh · $69.49

Own +1%
Grant·A
Mar 13, 26

Kalita Karen A

SVP and General Counsel

$2.4K

34 sh · $69.49

Own +1%
Grant·A
Mar 13, 26

McLaughlin Erica KEY

Executive Vice President, CFO

$4.6K

66 sh · $69.49

Own +1%
Grant·A
Mar 13, 26

Masterson William F III KEY

Senior Vice President

$234

3 sh · $69.49

Own +1%
Grant·A
Mar 13, 26

Nathoo Raffiq

Director

$578

8 sh · $69.49

Own +1%
Grant·A
Mar 13, 26

Dumont Lisa M

VP, Controller & CAO

$330

5 sh · $69.49

Own +1%
Grant·A
Mar 13, 26

DELGROSSO DOUGLAS G

Director

$2.3K

33 sh · $69.49

Own +1%
Grant·A
Jan 8, 26

ENRIQUEZ CABOT JUAN

Director

$0

486 sh

Own +1%
Grant·A
Jan 8, 26

Wilson Frank Anders

Director

$0

2.3K sh

Own +14%
Grant·A
Jan 8, 26

Nathoo Raffiq

Director

$0

2.3K sh

Own +33%
Grant·A
Jan 8, 26

Arnold Cynthia A

Director

$0

2.3K sh

Own +13%
Grant·A
Jan 8, 26

Yan Christine Y

Director

$0

2.3K sh

Own +15%
Grant·A
Jan 8, 26

Vanlancker Thierry FJ

Director

$0

2.3K sh

Own +88%
Grant·A
Jan 8, 26

DELGROSSO DOUGLAS G

Director

$0

2.3K sh

Own +18%
Grant·A
Jan 8, 26

Morrow Michael M

Director

$0

2.3K sh

Own +11%
Grant·A
Jan 8, 26

Williams Michelle Elizabeth

Director

$0

2.3K sh

Own +51%
Grant·A
Jan 8, 26

Kirby William C.

Director

$0

486 sh

Own +2%
Grant·A
Dec 31, 25

Masterson William F III KEY

Senior Vice President

$15.2K

229 sh · $66.28

Own +78%
Grant·A
Dec 31, 25

Dumont Lisa M

VP, Controller & CAO

$12.1K

182 sh · $66.28

Own +33%
Grant·A
Dec 31, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$68.6K

1.0K sh · $66.28

Own +11%
Grant·A
Dec 31, 25

Kalita Karen A

SVP and General Counsel

$61.1K

922 sh · $66.28

Own +21%
Grant·A
Dec 31, 25

Nathoo Raffiq

Director

$23.8K

358 sh · $66.28

Own +39%
Grant·A
Dec 31, 25

Keohane Sean D KEY

President and CEO

$169.9K

2.6K sh · $66.28

Own +6%
Grant·A
Dec 31, 25

ENRIQUEZ CABOT JUAN

Director

$27.5K

415 sh · $66.28

Own +1%
Exercise·C
Dec 31, 25

Nathoo Raffiq

Director

$224.3K

3.4K sh · $66.28

Own New
Grant·A
Dec 31, 25

Nathoo Raffiq

Director

$23.8K

358 sh · $66.28

Own +39%
Grant·A
Dec 12, 25

Nathoo Raffiq

Director

$1.9K

28 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

DELGROSSO DOUGLAS G

Director

$2.3K

33 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

Masterson William F III KEY

Senior Vice President

$131

2 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

ENRIQUEZ CABOT JUAN

Director

$24.6K

360 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

Kalita Karen A

SVP and General Counsel

$1.9K

28 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

Keohane Sean D KEY

President and CEO

$19.9K

292 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$4.1K

60 sh · $68.34

Own +1%
Grant·A
Dec 12, 25

Dumont Lisa M

VP, Controller & CAO

$247

4 sh · $68.34

Own +1%
Grant·A
Dec 3, 25

Masterson William F III KEY

Senior Vice President

$0

12.8K sh

Own New
Grant·A
Dec 3, 25

Masterson William F III KEY

Senior Vice President

$0

3.5K sh

Own +94%
Grant·A
Nov 19, 25

Zhu Jeff Ji KEY

Executive Vice President

$0

22.5K sh

Own New
Other·F
Nov 19, 25

Zhu Jeff Ji KEY

Executive Vice President

$59.6K

998 sh · $59.76

Own -1%
Grant·A
Nov 19, 25

Zhu Jeff Ji KEY

Executive Vice President

$0

6.0K sh

Own +8%
Grant·A
Nov 19, 25

Zhu Jeff Ji KEY

Executive Vice President

$0

5.4K sh

Own +7%
Grant·A
Nov 19, 25

Keohane Sean D KEY

President and CEO

$0

122.1K sh

Own New
Grant·A
Nov 19, 25

Keohane Sean D KEY

President and CEO

$0

30.9K sh

Own +8%
Grant·A
Nov 19, 25

Keohane Sean D KEY

President and CEO

$0

32.6K sh

Own +9%
Other·F
Nov 19, 25

Keohane Sean D KEY

President and CEO

$617.8K

10.3K sh · $59.76

Own -2%
Grant·A
Nov 19, 25

Dumont Lisa M

VP, Controller & CAO

$0

1.6K sh

Own +17%
Grant·A
Nov 19, 25

Dumont Lisa M

VP, Controller & CAO

$0

901 sh

Own +8%
Other·F
Nov 19, 25

Dumont Lisa M

VP, Controller & CAO

$12.0K

200 sh · $59.76

Own -2%
Grant·A
Nov 19, 25

Kalita Karen A

SVP and General Counsel

$0

16.9K sh

Own New
Other·F
Nov 19, 25

Kalita Karen A

SVP and General Counsel

$52.1K

872 sh · $59.76

Own -2%
Grant·A
Nov 19, 25

Kalita Karen A

SVP and General Counsel

$0

4.5K sh

Own +12%
Grant·A
Nov 19, 25

Kalita Karen A

SVP and General Counsel

$0

4.1K sh

Own +10%
Grant·A
Nov 19, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$0

31.0K sh

Own New
Grant·A
Nov 19, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$0

6.9K sh

Own +9%
Grant·A
Nov 19, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$0

8.3K sh

Own +13%
Other·F
Nov 19, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$135.0K

2.3K sh · $59.76

Own -3%
Other·F
Nov 19, 25

Wood Matthew Forster KEY

Senior Vice President

$13.1K

219 sh · $59.76

Own -2%
Grant·A
Nov 19, 25

Wood Matthew Forster KEY

Senior Vice President

$0

671 sh

Own +5%
Other·F
Nov 11, 25

Dumont Lisa M

VP, Controller & CAO

$22.0K

358 sh · $61.41

Own -4%
Other·F
Nov 11, 25

Zhu Jeff Ji KEY

Executive Vice President

$62.9K

1.0K sh · $61.41

Own -1%
Other·F
Nov 11, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$138.4K

2.3K sh · $61.41

Own -3%
Other·F
Nov 11, 25

Wood Matthew Forster KEY

Senior Vice President

$24.2K

394 sh · $61.41

Own -3%
Other·F
Nov 11, 25

Kalita Karen A

SVP and General Counsel

$55.0K

895 sh · $61.41

Own -2%
Other·F
Nov 11, 25

Keohane Sean D KEY

President and CEO

$651.4K

10.6K sh · $61.41

Own -3%
Grant·A
Sep 30, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$11.2K

147 sh · $76.05

Own +2%
Grant·A
Sep 30, 25

Kalita Karen A

SVP and General Counsel

$5.5K

73 sh · $76.05

Own +2%
Grant·A
Sep 30, 25

Keohane Sean D KEY

President and CEO

$25.4K

334 sh · $76.05

Own +1%
Grant·A
Sep 30, 25

ENRIQUEZ CABOT JUAN

Director

$27.5K

362 sh · $76.05

Own +1%
Grant·A
Sep 30, 25

Nathoo Raffiq

Director

$23.7K

312 sh · $76.05

Own +8%
Grant·A
Sep 11, 25

McLaughlin Erica KEY

Executive Vice President, CFO

$4.0K

49 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

Dumont Lisa M

VP, Controller & CAO

$245

3 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

Kalita Karen A

SVP and General Counsel

$1.9K

23 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

Wood Matthew Forster KEY

Senior Vice President

$115

1 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

ENRIQUEZ CABOT JUAN

Director

$24.3K

298 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

Keohane Sean D KEY

President and CEO

$19.7K

242 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

DELGROSSO DOUGLAS G

Director

$2.3K

28 sh · $81.47

Own +1%
Grant·A
Sep 11, 25

Nathoo Raffiq

Director

$1.8K

22 sh · $81.47

Own +1%
Exercise·M
Aug 14, 25

Keohane Sean D KEY

President and CEO

$0

26.5K sh

Own New
Exercise·M
Aug 14, 25

Keohane Sean D KEY

President and CEO

$0

88.0K sh

Own New
Sell·S
Aug 14, 25

Keohane Sean D KEY

President and CEO

$1.9M

24.1K sh · $79.25

Own -6%
Exercise·M
Aug 14, 25

Keohane Sean D KEY

President and CEO

$1.3M

26.5K sh · $49.26

Own +7%
Sell·S
Aug 14, 25

Keohane Sean D KEY

President and CEO

$611.2K

7.7K sh · $79.62

Own -2%
Sell·S
Aug 14, 25

Keohane Sean D KEY

President and CEO

$6.4M

80.3K sh · $79.24

Own -18%
Exercise·M
Aug 14, 25

Keohane Sean D KEY

President and CEO

$4.4M

88.0K sh · $50.46

Own +24%
Sell·S
Aug 14, 25

Keohane Sean D KEY

President and CEO

$188.6K

2.4K sh · $79.63

Own -1%
Grant·A
Jun 30, 25

ENRIQUEZ CABOT JUAN

Director

$27.5K

367 sh · $75.00

Own +1%
Grant·A
Jun 30, 25

Keohane Sean D KEY

President and CEO

$20.0K

267 sh · $75.00

Own +1%
Grant·A
Jun 30, 25

Nathoo Raffiq

Director

$23.8K

317 sh · $75.00

Own +9%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 12, 2026	Dumont Lisa M	VP, Controller & CAO	Grant A	4	+1%	$87.65	$349
Jun 12, 2026	Kalita Karen A	SVP and General Counsel	Grant A	28	+1%	$87.65	$2.5K
Jun 12, 2026	DELGROSSO DOUGLAS G	Director	Grant A	28	+1%	$87.65	$2.4K
Jun 12, 2026	Nathoo Raffiq	Director	Grant A	9	+1%	$87.65	$760
Jun 12, 2026	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	55	+1%	$87.65	$4.8K
Jun 12, 2026	Masterson William F III KEY	Senior Vice President	Grant A	3	+1%	$87.65	$248
Jun 12, 2026	Keohane Sean D KEY	President and CEO	Grant A	256	+1%	$87.65	$22.4K
Mar 31, 2026	Nathoo Raffiq	Director	Grant A	315	+24%	$75.31	$23.8K
Mar 13, 2026	Keohane Sean D KEY	President and CEO	Grant A	306	+1%	$69.49	$21.2K
Mar 13, 2026	Kalita Karen A	SVP and General Counsel	Grant A	34	+1%	$69.49	$2.4K
Mar 13, 2026	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	66	+1%	$69.49	$4.6K
Mar 13, 2026	Masterson William F III KEY	Senior Vice President	Grant A	3	+1%	$69.49	$234
Mar 13, 2026	Nathoo Raffiq	Director	Grant A	8	+1%	$69.49	$578
Mar 13, 2026	Dumont Lisa M	VP, Controller & CAO	Grant A	5	+1%	$69.49	$330
Mar 13, 2026	DELGROSSO DOUGLAS G	Director	Grant A	33	+1%	$69.49	$2.3K
Jan 8, 2026	ENRIQUEZ CABOT JUAN	Director	Grant A	486	+1%	—	$0
Jan 8, 2026	Wilson Frank Anders	Director	Grant A	2.3K	+14%	—	$0
Jan 8, 2026	Nathoo Raffiq	Director	Grant A	2.3K	+33%	—	$0
Jan 8, 2026	Arnold Cynthia A	Director	Grant A	2.3K	+13%	—	$0
Jan 8, 2026	Yan Christine Y	Director	Grant A	2.3K	+15%	—	$0
Jan 8, 2026	Vanlancker Thierry FJ	Director	Grant A	2.3K	+88%	—	$0
Jan 8, 2026	DELGROSSO DOUGLAS G	Director	Grant A	2.3K	+18%	—	$0
Jan 8, 2026	Morrow Michael M	Director	Grant A	2.3K	+11%	—	$0
Jan 8, 2026	Williams Michelle Elizabeth	Director	Grant A	2.3K	+51%	—	$0
Jan 8, 2026	Kirby William C.	Director	Grant A	486	+2%	—	$0
Dec 31, 2025	Masterson William F III KEY	Senior Vice President	Grant A	229	+78%	$66.28	$15.2K
Dec 31, 2025	Dumont Lisa M	VP, Controller & CAO	Grant A	182	+33%	$66.28	$12.1K
Dec 31, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	1.0K	+11%	$66.28	$68.6K
Dec 31, 2025	Kalita Karen A	SVP and General Counsel	Grant A	922	+21%	$66.28	$61.1K
Dec 31, 2025	Nathoo Raffiq	Director	Grant A	358	+39%	$66.28	$23.8K
Dec 31, 2025	Keohane Sean D KEY	President and CEO	Grant A	2.6K	+6%	$66.28	$169.9K
Dec 31, 2025	ENRIQUEZ CABOT JUAN	Director	Grant A	415	+1%	$66.28	$27.5K
Dec 31, 2025	Nathoo Raffiq	Director	Exercise C	3.4K	New	$66.28	$224.3K
Dec 31, 2025	Nathoo Raffiq	Director	Grant A	358	+39%	$66.28	$23.8K
Dec 12, 2025	Nathoo Raffiq	Director	Grant A	28	+1%	$68.34	$1.9K
Dec 12, 2025	DELGROSSO DOUGLAS G	Director	Grant A	33	+1%	$68.34	$2.3K
Dec 12, 2025	Masterson William F III KEY	Senior Vice President	Grant A	2	+1%	$68.34	$131
Dec 12, 2025	ENRIQUEZ CABOT JUAN	Director	Grant A	360	+1%	$68.34	$24.6K
Dec 12, 2025	Kalita Karen A	SVP and General Counsel	Grant A	28	+1%	$68.34	$1.9K
Dec 12, 2025	Keohane Sean D KEY	President and CEO	Grant A	292	+1%	$68.34	$19.9K
Dec 12, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	60	+1%	$68.34	$4.1K
Dec 12, 2025	Dumont Lisa M	VP, Controller & CAO	Grant A	4	+1%	$68.34	$247
Dec 3, 2025	Masterson William F III KEY	Senior Vice President	Grant A	12.8K	New	—	$0
Dec 3, 2025	Masterson William F III KEY	Senior Vice President	Grant A	3.5K	+94%	—	$0
Nov 19, 2025	Zhu Jeff Ji KEY	Executive Vice President	Grant A	22.5K	New	—	$0
Nov 19, 2025	Zhu Jeff Ji KEY	Executive Vice President	Other F	998	-1%	$59.76	$59.6K
Nov 19, 2025	Zhu Jeff Ji KEY	Executive Vice President	Grant A	6.0K	+8%	—	$0
Nov 19, 2025	Zhu Jeff Ji KEY	Executive Vice President	Grant A	5.4K	+7%	—	$0
Nov 19, 2025	Keohane Sean D KEY	President and CEO	Grant A	122.1K	New	—	$0
Nov 19, 2025	Keohane Sean D KEY	President and CEO	Grant A	30.9K	+8%	—	$0
Nov 19, 2025	Keohane Sean D KEY	President and CEO	Grant A	32.6K	+9%	—	$0
Nov 19, 2025	Keohane Sean D KEY	President and CEO	Other F	10.3K	-2%	$59.76	$617.8K
Nov 19, 2025	Dumont Lisa M	VP, Controller & CAO	Grant A	1.6K	+17%	—	$0
Nov 19, 2025	Dumont Lisa M	VP, Controller & CAO	Grant A	901	+8%	—	$0
Nov 19, 2025	Dumont Lisa M	VP, Controller & CAO	Other F	200	-2%	$59.76	$12.0K
Nov 19, 2025	Kalita Karen A	SVP and General Counsel	Grant A	16.9K	New	—	$0
Nov 19, 2025	Kalita Karen A	SVP and General Counsel	Other F	872	-2%	$59.76	$52.1K
Nov 19, 2025	Kalita Karen A	SVP and General Counsel	Grant A	4.5K	+12%	—	$0
Nov 19, 2025	Kalita Karen A	SVP and General Counsel	Grant A	4.1K	+10%	—	$0
Nov 19, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	31.0K	New	—	$0
Nov 19, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	6.9K	+9%	—	$0
Nov 19, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	8.3K	+13%	—	$0
Nov 19, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Other F	2.3K	-3%	$59.76	$135.0K
Nov 19, 2025	Wood Matthew Forster KEY	Senior Vice President	Other F	219	-2%	$59.76	$13.1K
Nov 19, 2025	Wood Matthew Forster KEY	Senior Vice President	Grant A	671	+5%	—	$0
Nov 11, 2025	Dumont Lisa M	VP, Controller & CAO	Other F	358	-4%	$61.41	$22.0K
Nov 11, 2025	Zhu Jeff Ji KEY	Executive Vice President	Other F	1.0K	-1%	$61.41	$62.9K
Nov 11, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Other F	2.3K	-3%	$61.41	$138.4K
Nov 11, 2025	Wood Matthew Forster KEY	Senior Vice President	Other F	394	-3%	$61.41	$24.2K
Nov 11, 2025	Kalita Karen A	SVP and General Counsel	Other F	895	-2%	$61.41	$55.0K
Nov 11, 2025	Keohane Sean D KEY	President and CEO	Other F	10.6K	-3%	$61.41	$651.4K
Sep 30, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	147	+2%	$76.05	$11.2K
Sep 30, 2025	Kalita Karen A	SVP and General Counsel	Grant A	73	+2%	$76.05	$5.5K
Sep 30, 2025	Keohane Sean D KEY	President and CEO	Grant A	334	+1%	$76.05	$25.4K
Sep 30, 2025	ENRIQUEZ CABOT JUAN	Director	Grant A	362	+1%	$76.05	$27.5K
Sep 30, 2025	Nathoo Raffiq	Director	Grant A	312	+8%	$76.05	$23.7K
Sep 11, 2025	McLaughlin Erica KEY	Executive Vice President, CFO	Grant A	49	+1%	$81.47	$4.0K
Sep 11, 2025	Dumont Lisa M	VP, Controller & CAO	Grant A	3	+1%	$81.47	$245
Sep 11, 2025	Kalita Karen A	SVP and General Counsel	Grant A	23	+1%	$81.47	$1.9K
Sep 11, 2025	Wood Matthew Forster KEY	Senior Vice President	Grant A	1	+1%	$81.47	$115
Sep 11, 2025	ENRIQUEZ CABOT JUAN	Director	Grant A	298	+1%	$81.47	$24.3K
Sep 11, 2025	Keohane Sean D KEY	President and CEO	Grant A	242	+1%	$81.47	$19.7K
Sep 11, 2025	DELGROSSO DOUGLAS G	Director	Grant A	28	+1%	$81.47	$2.3K
Sep 11, 2025	Nathoo Raffiq	Director	Grant A	22	+1%	$81.47	$1.8K
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Exercise M	26.5K	New	—	$0
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Exercise M	88.0K	New	—	$0
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Sell S	24.1K	-6%	$79.25	$1.9M
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Exercise M	26.5K	+7%	$49.26	$1.3M
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Sell S	7.7K	-2%	$79.62	$611.2K
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Sell S	80.3K	-18%	$79.24	$6.4M
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Exercise M	88.0K	+24%	$50.46	$4.4M
Aug 14, 2025	Keohane Sean D KEY	President and CEO	Sell S	2.4K	-1%	$79.63	$188.6K
Jun 30, 2025	ENRIQUEZ CABOT JUAN	Director	Grant A	367	+1%	$75.00	$27.5K
Jun 30, 2025	Keohane Sean D KEY	President and CEO	Grant A	267	+1%	$75.00	$20.0K
Jun 30, 2025	Nathoo Raffiq	Director	Grant A	317	+9%	$75.00	$23.8K

About CBT insider trading

This page tracks insider transactions for CABOT CORP (CBT) 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.