Koppikar Utpal

Chief Financial Officer at Atara Biotherapeutics, Inc. · on record since Jun 7, 2018
Director at Flexion Therapeutics Inc · on record since Jul 12, 2021
Director at C4 Therapeutics, Inc. · on record since Mar 17, 2022

Insider trading activity of Koppikar Utpal

Transactions on record: 44; since Jun 7, 2018

Open-market buys: 2; $105.3K

Open-market sells: 24; $705.4K

Companies traded: 3; last filing Jun 26, 2026

Figures computed from official regulatory filings — .

Companies where Koppikar Utpal has traded

C4 Therapeutics, Inc.6 tx · $31.7K · Jun 26, 2026
Atara Biotherapeutics, Inc.36 tx · $779K · Mar 6, 2023
Flexion Therapeutics Inc2 tx · Nov 19, 2021

Track record of Koppikar Utpal

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Koppikar Utpal

Co-insiders of Koppikar Utpal

5AM CO-INVESTORS II LPFlexion Therapeutics Inc
5AM Ventures II LPFlexion Therapeutics Inc
Adams KendraC4 Therapeutics, Inc.
Adiumentum Capital Fund I GP LLCAtara Biotherapeutics, Inc.
Adiumentum Capital Fund I LPAtara Biotherapeutics, Inc.
Anderson Kenneth CarlC4 Therapeutics, Inc.
Andrews William T.Flexion Therapeutics Inc
Arkowitz DavidFlexion Therapeutics Inc
ATWOOD BRIAN GFlexion Therapeutics Inc
Banard Charlene A.Atara Biotherapeutics, Inc.
Baynes Roy D.Atara Biotherapeutics, Inc.
Berger DietmarAtara Biotherapeutics, Inc.
Bessen LauraC4 Therapeutics, Inc.
BLAIR JAMES CAtara Biotherapeutics, Inc.
Bodick NeilFlexion Therapeutics Inc
Bolzon Bradley J PhDFlexion Therapeutics Inc
Boyle Scott NC4 Therapeutics, Inc.
Cadeddu John J.Atara Biotherapeutics, Inc.
Canute Scott AFlexion Therapeutics Inc

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
C4 Therapeutics, Inc.Listing on record	Jun 26, 2026	AwardD (derivative)	62,000	0.00 USD	—	SEC
C4 Therapeutics, Inc.Listing on record	Jun 20, 2025	AwardD (derivative)	35,500	0.00 USD	—	SEC
C4 Therapeutics, Inc.Listing on record	Jun 21, 2024	AwardD (derivative)	32,500	0.00 USD	—	SEC
C4 Therapeutics, Inc.Listing on record	Jun 16, 2023	AwardD (derivative)	26,000	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 6, 2023	Sell	-6,871	3.63 USD	$24.9K	SEC
C4 Therapeutics, Inc.Listing on record	Feb 10, 2023	Buy	5,667	5.60 USD	$31.7K	SEC
Atara Biotherapeutics, Inc.Listing on record	Feb 9, 2023	Sell	-2,485	5.46 USD	$13.6K	SEC
Atara Biotherapeutics, Inc.Listing on record	Nov 18, 2022	Sell	-5,172	4.49 USD	$23.2K	SEC
Atara Biotherapeutics, Inc.Listing on record	Nov 18, 2022	Sell	-1,083	4.49 USD	$4.9K	SEC
Atara Biotherapeutics, Inc.Listing on record	Aug 18, 2022	Sell	-5,940	5.04 USD	$29.9K	SEC
Atara Biotherapeutics, Inc.Listing on record	Jun 10, 2022	Sell	-5,853	5.63 USD	$33K	SEC
Atara Biotherapeutics, Inc.Listing on record	May 19, 2022	Sell	-966	5.32 USD	$5.1K	SEC
Atara Biotherapeutics, Inc.Listing on record	May 19, 2022	Sell	-4,616	5.32 USD	$24.6K	SEC
C4 Therapeutics, Inc.Listing on record	Mar 17, 2022	AwardD (derivative)	41,200	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	AwardD (derivative)	115,107	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	Sell	-1,491	9.86 USD	$14.7K	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	Award	61,235	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	Sell	-2,272	9.86 USD	$22.4K	SEC
Atara Biotherapeutics, Inc.Listing on record	Feb 9, 2022	Sell	-2,496	14.46 USD	$36.1K	SEC
Flexion Therapeutics IncListing unverified	Nov 19, 2021	OtherD (derivative)	-32,000	—	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Nov 18, 2021	Sell	-3,655	17.12 USD	$62.6K	SEC
Atara Biotherapeutics, Inc.Listing on record	Aug 19, 2021	Sell	-3,579	12.53 USD	$44.8K	SEC
Flexion Therapeutics IncListing unverified	Jul 12, 2021	AwardD (derivative)	32,000	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Jun 9, 2021	Sell	-5,820	14.06 USD	$81.8K	SEC
Atara Biotherapeutics, Inc.Listing on record	May 20, 2021	Sell	-3,616	14.55 USD	$52.6K	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
C4 Therapeutics, Inc.Listing on record	Jun 26, 2026	AwardD (derivative)	62,000	0.00 USD	—	SEC
C4 Therapeutics, Inc.Listing on record	Jun 20, 2025	AwardD (derivative)	35,500	0.00 USD	—	SEC
C4 Therapeutics, Inc.Listing on record	Jun 21, 2024	AwardD (derivative)	32,500	0.00 USD	—	SEC
C4 Therapeutics, Inc.Listing on record	Jun 16, 2023	AwardD (derivative)	26,000	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 6, 2023	Sell	-6,871	3.63 USD	$24.9K	SEC
C4 Therapeutics, Inc.Listing on record	Feb 10, 2023	Buy	5,667	5.60 USD	$31.7K	SEC
Atara Biotherapeutics, Inc.Listing on record	Feb 9, 2023	Sell	-2,485	5.46 USD	$13.6K	SEC
Atara Biotherapeutics, Inc.Listing on record	Nov 18, 2022	Sell	-5,172	4.49 USD	$23.2K	SEC
Atara Biotherapeutics, Inc.Listing on record	Nov 18, 2022	Sell	-1,083	4.49 USD	$4.9K	SEC
Atara Biotherapeutics, Inc.Listing on record	Aug 18, 2022	Sell	-5,940	5.04 USD	$29.9K	SEC
Atara Biotherapeutics, Inc.Listing on record	Jun 10, 2022	Sell	-5,853	5.63 USD	$33K	SEC
Atara Biotherapeutics, Inc.Listing on record	May 19, 2022	Sell	-966	5.32 USD	$5.1K	SEC
Atara Biotherapeutics, Inc.Listing on record	May 19, 2022	Sell	-4,616	5.32 USD	$24.6K	SEC
C4 Therapeutics, Inc.Listing on record	Mar 17, 2022	AwardD (derivative)	41,200	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	AwardD (derivative)	115,107	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	Sell	-1,491	9.86 USD	$14.7K	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	Award	61,235	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Mar 3, 2022	Sell	-2,272	9.86 USD	$22.4K	SEC
Atara Biotherapeutics, Inc.Listing on record	Feb 9, 2022	Sell	-2,496	14.46 USD	$36.1K	SEC
Flexion Therapeutics IncListing unverified	Nov 19, 2021	OtherD (derivative)	-32,000	—	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Nov 18, 2021	Sell	-3,655	17.12 USD	$62.6K	SEC
Atara Biotherapeutics, Inc.Listing on record	Aug 19, 2021	Sell	-3,579	12.53 USD	$44.8K	SEC
Flexion Therapeutics IncListing unverified	Jul 12, 2021	AwardD (derivative)	32,000	0.00 USD	—	SEC
Atara Biotherapeutics, Inc.Listing on record	Jun 9, 2021	Sell	-5,820	14.06 USD	$81.8K	SEC
Atara Biotherapeutics, Inc.Listing on record	May 20, 2021	Sell	-3,616	14.55 USD	$52.6K	SEC