GROGAN DONNA ROY

Director at C4 Therapeutics, Inc. · on record since Apr 3, 2026
Director at MOMENTA PHARMACEUTICALS INC · on record since Sep 20, 2019

Insider trading activity of GROGAN DONNA ROY

Transactions on record: 26; since Sep 20, 2019

Open-market buys: 0

Open-market sells: 0

Companies traded: 2; last filing Oct 2, 2026

Figures computed from official regulatory filings — .

Companies where GROGAN DONNA ROY has traded

C4 Therapeutics, Inc.22 tx · $229.2K · Oct 2, 2026
MOMENTA PHARMACEUTICALS INC4 tx · Oct 1, 2020

Track record of GROGAN DONNA ROY

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

Transaction history of GROGAN DONNA ROY

Co-insiders of GROGAN DONNA ROY

DOWNEY BRUCEC4 Therapeutics, Inc. +1
Adams KendraC4 Therapeutics, Inc.
Anderson Kenneth CarlC4 Therapeutics, Inc.
Arnold Stephen DMOMENTA PHARMACEUTICALS INC
Arroyo SantiagoMOMENTA PHARMACEUTICALS INC
Atlas Venture Associates VI, IncMOMENTA PHARMACEUTICALS INC
Atlas Venture Associates VI, L.P.MOMENTA PHARMACEUTICALS INC
ATLAS VENTURE ASSOCIATES V LPMOMENTA PHARMACEUTICALS INC
ATLAS VENTURE ENTREPRENEURS FUND VI LPMOMENTA PHARMACEUTICALS INC
ATLAS VENTURE ENTREPRENEURS FUND V LPMOMENTA PHARMACEUTICALS INC
Atlas Venture Fund VI GmbH & Co KGMOMENTA PHARMACEUTICALS INC
ATLAS VENTURE FUND VI LPMOMENTA PHARMACEUTICALS INC
ATLAS VENTURE FUND V LPMOMENTA PHARMACEUTICALS INC
ATLAS VENTURE PARALLEL FUND V-A C VMOMENTA PHARMACEUTICALS INC
ATLAS VENTURE PARALLEL FUND V-B C VMOMENTA PHARMACEUTICALS INC
Barlow Jane FMOMENTA PHARMACEUTICALS INC
Barrett PeterMOMENTA PHARMACEUTICALS INC
BELTRAMELLO JO ANNMOMENTA PHARMACEUTICALS INC
Bessen LauraC4 Therapeutics, Inc.
Bishop John EMOMENTA PHARMACEUTICALS INC
Boyle Scott NC4 Therapeutics, Inc.
Brugger Stephen BMOMENTA PHARMACEUTICALS INC
Carvajal AlejandraMOMENTA PHARMACEUTICALS INC
Cieplinska AgnieszkaMOMENTA PHARMACEUTICALS INC
CLARKE JOHN KMOMENTA PHARMACEUTICALS INC

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
C4 Therapeutics, Inc.Listing on record	Oct 2, 2026	Award	4,618	3.14 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 2, 2026	Award	3,341	4.34 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 26, 2026	AwardD (derivative)	62,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 3, 2026	Award	5,370	2.70 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 5, 2026	Award	7,513	1.93 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Oct 3, 2025	Award	6,740	2.15 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 2, 2025	Award	9,609	1.51 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 20, 2025	AwardD (derivative)	35,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 3, 2025	Award	9,581	1.44 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 3, 2025	Award	3,757	3.66 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Oct 2, 2024	Award	2,474	5.56 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 2, 2024	Award	2,836	4.85 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 21, 2024	AwardD (derivative)	32,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 2, 2024	Award	1,697	8.10 USD	$13.7K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 3, 2024	Award	2,108	6.52 USD	$13.7K		SEC
C4 Therapeutics, Inc.Listing on record	Oct 3, 2023	Award	8,089	1.70 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 5, 2023	Award	4,858	2.83 USD	$13.7K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 16, 2023	AwardD (derivative)	26,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 4, 2023	Award	4,298	3.20 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 4, 2023	Award	1,763	6.38 USD	$11.2K	Unusual size	SEC
C4 Therapeutics, Inc.Listing on record	Oct 4, 2022	Award	819	8.69 USD	$7.1K		SEC
C4 Therapeutics, Inc.Listing on record	Aug 2, 2022	AwardD (derivative)	41,200	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MOMENTA PHARMACEUTICALS INCListing unverified	Oct 1, 2020	OtherD (derivative)	-25,000	—	n/a (No price was disclosed in the filing)		SEC
MOMENTA PHARMACEUTICALS INCListing unverified	Oct 1, 2020	OtherD (derivative)	-50,000	—	n/a (No price was disclosed in the filing)		SEC
MOMENTA PHARMACEUTICALS INCListing unverified	Jun 24, 2020	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
C4 Therapeutics, Inc.Listing on record	Oct 2, 2026	Award	4,618	3.14 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 2, 2026	Award	3,341	4.34 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 26, 2026	AwardD (derivative)	62,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 3, 2026	Award	5,370	2.70 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 5, 2026	Award	7,513	1.93 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Oct 3, 2025	Award	6,740	2.15 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 2, 2025	Award	9,609	1.51 USD	$14.5K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 20, 2025	AwardD (derivative)	35,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 3, 2025	Award	9,581	1.44 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 3, 2025	Award	3,757	3.66 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Oct 2, 2024	Award	2,474	5.56 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 2, 2024	Award	2,836	4.85 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 21, 2024	AwardD (derivative)	32,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 2, 2024	Award	1,697	8.10 USD	$13.7K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 3, 2024	Award	2,108	6.52 USD	$13.7K		SEC
C4 Therapeutics, Inc.Listing on record	Oct 3, 2023	Award	8,089	1.70 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jul 5, 2023	Award	4,858	2.83 USD	$13.7K		SEC
C4 Therapeutics, Inc.Listing on record	Jun 16, 2023	AwardD (derivative)	26,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
C4 Therapeutics, Inc.Listing on record	Apr 4, 2023	Award	4,298	3.20 USD	$13.8K		SEC
C4 Therapeutics, Inc.Listing on record	Jan 4, 2023	Award	1,763	6.38 USD	$11.2K	Unusual size	SEC
C4 Therapeutics, Inc.Listing on record	Oct 4, 2022	Award	819	8.69 USD	$7.1K		SEC
C4 Therapeutics, Inc.Listing on record	Aug 2, 2022	AwardD (derivative)	41,200	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MOMENTA PHARMACEUTICALS INCListing unverified	Oct 1, 2020	OtherD (derivative)	-25,000	—	n/a (No price was disclosed in the filing)		SEC
MOMENTA PHARMACEUTICALS INCListing unverified	Oct 1, 2020	OtherD (derivative)	-50,000	—	n/a (No price was disclosed in the filing)		SEC
MOMENTA PHARMACEUTICALS INCListing unverified	Jun 24, 2020	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC