COGT

Cogent Biosciences, Inc.

Insider trading activity for Cogent Biosciences, Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$1.7M

net selling

Bought(0 · 0 insiders): $0
Sold(2 · 1 insiders): $1.7M

Past 6 months

-$244.3M

net selling

Bought(0 · 0 insiders): $0
Sold(3 · 2 insiders): $244.3M

Past 12 months

-$383.9M

net selling

Bought(0 · 0 insiders): $0
Sold(8 · 6 insiders): $383.9M

Transaction history

The 58 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Aug 27	Morris Arlene	Director	MEXER◷◆	3,583	—	—	—	Open the original filing on SEC.gov
Aug 27	Morris Arlene	Director	MEXER◷◆	41,927	—	—	—	Open the original filing on SEC.gov
Aug 27	Morris Arlene	Director	SSELL◷	3,161	$37.54	$118.7K	-100.0%	Open the original filing on SEC.gov
Aug 27	Morris Arlene	Director	SSELL◷	42,349	$37.09	$1.6M	-93.0%	Open the original filing on SEC.gov
Aug 27	Morris Arlene	Director	MEXER◷	3,583	$2.52	$9K	+8.6%	Open the original filing on SEC.gov
Aug 27	Morris Arlene	Director	MEXER◷	41,927	$5.64	$236.5K	—	Open the original filing on SEC.gov
Jul 1	Ferrante Karen Jean	Director	AGRANT◆	627	—	—	—	Open the original filing on SEC.gov
Jun 9	Shegog Todd	Director	AGRANT◆	17,901	—	—	—	Open the original filing on SEC.gov
Jun 9	Morris Arlene	Director	AGRANT◆	17,901	—	—	—	Open the original filing on SEC.gov
Jun 9	Ros Matthew	Director	AGRANT◆	17,901	—	—	—	Open the original filing on SEC.gov
Jun 9	Harwin Peter Evan	Director	AGRANT◆	17,901	—	—	—	Open the original filing on SEC.gov
Jun 9	Ferrante Karen Jean	Director	AGRANT◆	17,901	—	—	—	Open the original filing on SEC.gov
Jun 9	Cain Christopher W.	Director	AGRANT◆	17,901	—	—	—	Open the original filing on SEC.gov
May 19	Robbins Andrew R	President and CEO	GGIFT	160,000	—	—	—	Open the original filing on SEC.gov
May 19	Robbins Andrew R	President and CEO	GGIFT	160,000	—	—	-24.3%	Open the original filing on SEC.gov
Apr 1	Ferrante Karen Jean	Director	AGRANT◆	686	—	—	—	Open the original filing on SEC.gov
Mar 31	Fairmount Funds…	Director	CCONV◆	28,000	—	—	—	Open the original filing on SEC.gov
Mar 31	Fairmount Funds…	Director	SSELL	7M	$34.66	$242.6M	-56.0%	Open the original filing on SEC.gov
Mar 31	Fairmount Funds…	Director	CCONV	7M	—	—	+127.2%	Open the original filing on SEC.gov
Jan 22	Fairmount Funds…	Director	SSELL	3.5M	$36.40	$127.4M	-38.9%	Open the original filing on SEC.gov
Jan 1	Ferrante Karen Jean	Director	AGRANT◆	643	—	—	—	Open the original filing on SEC.gov
Dec 26, 2025	Kearns Evan	Chief Legal Officer	SSELL	65,000	$38.70	$2.5M	-37.3%	Open the original filing on SEC.gov
Dec 26, 2025	Green John L.	Chief Financial Officer	SSELL	77,000	$38.68	$3M	-36.9%	Open the original filing on SEC.gov
Dec 26, 2025	Sachs Jessica	Chief Medical Officer	SSELL	82,642	$38.70	$3.2M	-38.2%	Open the original filing on SEC.gov
Dec 26, 2025	Robinson John Edward	Chief Scientific Officer	SSELL	90,000	$38.74	$3.5M	-39.1%	Open the original filing on SEC.gov
Dec 17, 2025	Robinson John Edward	Chief Scientific Officer	AGRANT◆	65,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Robinson John Edward	Chief Scientific Officer	FTAX	139,998	$39.45	$5.5M	-37.8%	Open the original filing on SEC.gov
Dec 17, 2025	Robinson John Edward	Chief Scientific Officer	AGRANT	320,000	—	—	+640.0%	Open the original filing on SEC.gov
Dec 17, 2025	Robinson John Edward	Chief Scientific Officer	AGRANT	50,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Robbins Andrew R	President and CEO	AGRANT◆	245,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Robbins Andrew R	President and CEO	FTAX	367,497	$39.45	$14.5M	-35.9%	Open the original filing on SEC.gov
Dec 17, 2025	Robbins Andrew R	President and CEO	AGRANT	840,000	—	—	+454.0%	Open the original filing on SEC.gov
Dec 17, 2025	Robbins Andrew R	President and CEO	AGRANT	185,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Pinnow Cole	Chief Commercial Officer	AGRANT◆	65,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Pinnow Cole	Chief Commercial Officer	FTAX	94,800	$39.45	$3.7M	-30.4%	Open the original filing on SEC.gov
Dec 17, 2025	Pinnow Cole	Chief Commercial Officer	AGRANT	214,000	—	—	+219.6%	Open the original filing on SEC.gov
Dec 17, 2025	Pinnow Cole	Chief Commercial Officer	AGRANT	50,000	—	—	+105.4%	Open the original filing on SEC.gov
Dec 17, 2025	Sachs Jessica	Chief Medical Officer	AGRANT◆	65,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Sachs Jessica	Chief Medical Officer	FTAX	154,716	$39.45	$6.1M	-41.7%	Open the original filing on SEC.gov
Dec 17, 2025	Sachs Jessica	Chief Medical Officer	AGRANT	320,000	—	—	+623.8%	Open the original filing on SEC.gov
Dec 17, 2025	Sachs Jessica	Chief Medical Officer	AGRANT	50,000	—	—	+3,858%	Open the original filing on SEC.gov
Dec 17, 2025	Kearns Evan	Chief Legal Officer	AGRANT◆	55,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Kearns Evan	Chief Legal Officer	FTAX	125,602	$39.45	$5M	-41.9%	Open the original filing on SEC.gov
Dec 17, 2025	Kearns Evan	Chief Legal Officer	AGRANT	260,000	—	—	+650.0%	Open the original filing on SEC.gov
Dec 17, 2025	Kearns Evan	Chief Legal Officer	AGRANT	40,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Green John L.	Chief Financial Officer	AGRANT◆	65,000	—	—	—	Open the original filing on SEC.gov
Dec 17, 2025	Green John L.	Chief Financial Officer	FTAX	145,007	$39.45	$5.7M	-41.0%	Open the original filing on SEC.gov
Dec 17, 2025	Green John L.	Chief Financial Officer	AGRANT	300,000	—	—	+557.2%	Open the original filing on SEC.gov
Dec 17, 2025	Green John L.	Chief Financial Officer	AGRANT	50,000	—	—	+1,302%	Open the original filing on SEC.gov
Oct 1, 2025	Ferrante Karen Jean	Director	AGRANT◆	1,642	—	—	—	Open the original filing on SEC.gov
Jul 10, 2025	Fairmount Funds…	Director	PBUY	2.8M	$9.00	$25M	+44.6%	Open the original filing on SEC.gov
Jul 1, 2025	Ferrante Karen Jean	Director	AGRANT◆	3,314	—	—	—	Open the original filing on SEC.gov
Jun 4, 2025	Ferrante Karen Jean	Director	AGRANT◆	44,700	—	—	—	Open the original filing on SEC.gov
Jun 4, 2025	Ros Matthew	Director	AGRANT◆	44,700	—	—	—	Open the original filing on SEC.gov
Jun 4, 2025	Shegog Todd	Director	AGRANT◆	44,700	—	—	—	Open the original filing on SEC.gov
Jun 4, 2025	Harwin Peter Evan	Director	AGRANT◆	44,700	—	—	—	Open the original filing on SEC.gov
Jun 4, 2025	Morris Arlene	Director	AGRANT◆	44,700	—	—	—	Open the original filing on SEC.gov
Jun 4, 2025	Cain Christopher W.	Director	AGRANT◆	44,700	—	—	—	Open the original filing on SEC.gov

MEXER◷◆—

Morris Arlene · DirectorAug 27

3,583 sh

MEXER◷◆—

Morris Arlene · DirectorAug 27

41,927 sh

SSELL◷$118.7K

Morris Arlene · DirectorAug 27

3,161 sh @ $37.54 · -100.0% own

SSELL◷$1.6M

Morris Arlene · DirectorAug 27

42,349 sh @ $37.09 · -93.0% own

MEXER◷$9K

Morris Arlene · DirectorAug 27

3,583 sh @ $2.52 · +8.6% own

MEXER◷$236.5K

Morris Arlene · DirectorAug 27

41,927 sh @ $5.64

AGRANT◆—

Ferrante Karen Jean · DirectorJul 1

627 sh

AGRANT◆—

Shegog Todd · DirectorJun 9

17,901 sh

AGRANT◆—

Morris Arlene · DirectorJun 9

17,901 sh

AGRANT◆—

Ros Matthew · DirectorJun 9

17,901 sh

AGRANT◆—

Harwin Peter Evan · DirectorJun 9

17,901 sh

AGRANT◆—

Ferrante Karen Jean · DirectorJun 9

17,901 sh

AGRANT◆—

Cain Christopher W. · DirectorJun 9

17,901 sh

GGIFT—

Robbins Andrew R · President and CEOMay 19

160,000 sh

GGIFT—

Robbins Andrew R · President and CEOMay 19

160,000 sh · -24.3% own

AGRANT◆—

Ferrante Karen Jean · DirectorApr 1

686 sh

CCONV◆—

Fairmount Funds… · DirectorMar 31

28,000 sh

SSELL$242.6M

Fairmount Funds… · DirectorMar 31

7M sh @ $34.66 · -56.0% own

CCONV—

Fairmount Funds… · DirectorMar 31

7M sh · +127.2% own

SSELL$127.4M

Fairmount Funds… · DirectorJan 22

3.5M sh @ $36.40 · -38.9% own

AGRANT◆—

Ferrante Karen Jean · DirectorJan 1

643 sh

SSELL$2.5M

Kearns Evan · Chief Legal…Dec 26, 2025

65,000 sh @ $38.70 · -37.3% own

SSELL$3M

Green John L. · Chief Financial…Dec 26, 2025

77,000 sh @ $38.68 · -36.9% own

SSELL$3.2M

Sachs Jessica · Chief Medical…Dec 26, 2025

82,642 sh @ $38.70 · -38.2% own

SSELL$3.5M

Robinson John Edward · Chief Scientific…Dec 26, 2025

90,000 sh @ $38.74 · -39.1% own

AGRANT◆—

Robinson John Edward · Chief Scientific…Dec 17, 2025

65,000 sh

FTAX$5.5M

Robinson John Edward · Chief Scientific…Dec 17, 2025

139,998 sh @ $39.45 · -37.8% own

AGRANT—

Robinson John Edward · Chief Scientific…Dec 17, 2025

320,000 sh · +640.0% own

AGRANT—

Robinson John Edward · Chief Scientific…Dec 17, 2025

50,000 sh

AGRANT◆—

Robbins Andrew R · President and CEODec 17, 2025

245,000 sh

FTAX$14.5M

Robbins Andrew R · President and CEODec 17, 2025

367,497 sh @ $39.45 · -35.9% own

AGRANT—

Robbins Andrew R · President and CEODec 17, 2025

840,000 sh · +454.0% own

AGRANT—

Robbins Andrew R · President and CEODec 17, 2025

185,000 sh

AGRANT◆—

Pinnow Cole · Chief Commercial…Dec 17, 2025

65,000 sh

FTAX$3.7M

Pinnow Cole · Chief Commercial…Dec 17, 2025

94,800 sh @ $39.45 · -30.4% own

AGRANT—

Pinnow Cole · Chief Commercial…Dec 17, 2025

214,000 sh · +219.6% own

AGRANT—

Pinnow Cole · Chief Commercial…Dec 17, 2025

50,000 sh · +105.4% own

AGRANT◆—

Sachs Jessica · Chief Medical…Dec 17, 2025

65,000 sh

FTAX$6.1M

Sachs Jessica · Chief Medical…Dec 17, 2025

154,716 sh @ $39.45 · -41.7% own

AGRANT—

Sachs Jessica · Chief Medical…Dec 17, 2025

320,000 sh · +623.8% own

AGRANT—

Sachs Jessica · Chief Medical…Dec 17, 2025

50,000 sh · +3,858% own

AGRANT◆—

Kearns Evan · Chief Legal…Dec 17, 2025

55,000 sh

FTAX$5M

Kearns Evan · Chief Legal…Dec 17, 2025

125,602 sh @ $39.45 · -41.9% own

AGRANT—

Kearns Evan · Chief Legal…Dec 17, 2025

260,000 sh · +650.0% own

AGRANT—

Kearns Evan · Chief Legal…Dec 17, 2025

40,000 sh

AGRANT◆—

Green John L. · Chief Financial…Dec 17, 2025

65,000 sh

FTAX$5.7M

Green John L. · Chief Financial…Dec 17, 2025

145,007 sh @ $39.45 · -41.0% own

AGRANT—

Green John L. · Chief Financial…Dec 17, 2025

300,000 sh · +557.2% own

AGRANT—

Green John L. · Chief Financial…Dec 17, 2025

50,000 sh · +1,302% own

AGRANT◆—

Ferrante Karen Jean · DirectorOct 1, 2025

1,642 sh

PBUY$25M

Fairmount Funds… · DirectorJul 10, 2025

2.8M sh @ $9.00 · +44.6% own

AGRANT◆—

Ferrante Karen Jean · DirectorJul 1, 2025

3,314 sh

AGRANT◆—

Ferrante Karen Jean · DirectorJun 4, 2025

44,700 sh

AGRANT◆—

Ros Matthew · DirectorJun 4, 2025

44,700 sh

AGRANT◆—

Shegog Todd · DirectorJun 4, 2025

44,700 sh

AGRANT◆—

Harwin Peter Evan · DirectorJun 4, 2025

44,700 sh

AGRANT◆—

Morris Arlene · DirectorJun 4, 2025

44,700 sh

AGRANT◆—

Cain Christopher W. · DirectorJun 4, 2025

44,700 sh

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 30 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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