Dere Willard H

Director at TRANZYME INC · on record since Oct 28, 2016
Director at BIOMARIN PHARMACEUTICAL INC · on record since Jun 4, 2026
Director at Metagenomi Therapeutics, Inc. · on record since Jun 11, 2026
Director at MPM ACQUISITION CORP · on record since Nov 7, 2014
Sr. V.P., Global Dev & CMO at AMGEN INC · on record since Dec 15, 2004
Director at Seres Therapeutics, Inc. · on record since Jul 10, 2017
Director at Mersana Therapeutics, Inc. · on record since Mar 21, 2018

Insider trading activity of Dere Willard H

Transactions on record: 85; since Dec 15, 2004

Open-market buys: 0

Open-market sells: 3; $619.5K

Companies traded: 7; last filing Jun 11, 2026

Figures computed from official regulatory filings — methodology.

Companies where Dere Willard H has traded

Metagenomi Therapeutics, Inc.3 tx · Jun 11, 2026
BIOMARIN PHARMACEUTICAL INC14 tx · $547.6K · Jun 4, 2026
Mersana Therapeutics, Inc.30 tx · Jan 6, 2026
Seres Therapeutics, Inc.10 tx · $100K · Apr 11, 2025
MPM ACQUISITION CORP23 tx · $339.8K · Aug 15, 2022
TRANZYME INC4 tx · $19K · Dec 11, 2017
AMGEN INC1 tx · Dec 15, 2004

Track record of Dere Willard H

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

Transaction history of Dere Willard H

Co-insiders of Dere Willard H

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Company	Filed	Type	Qty	Price	Value · USD	Src
Metagenomi Therapeutics, Inc.	Jun 11, 2026	AwardD	21,000	0.00 USD	$0	SEC
BIOMARIN PHARMACEUTICAL INC	Jun 4, 2026	Award	7,490	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-450	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-544	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-2,460	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-1,002	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-125	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-368	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-800	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-513	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-2,200	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-734	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-1,000	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-1,800	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	Other	-1,567	—	—	SEC
Mersana Therapeutics, Inc.	Jun 13, 2025	AwardD	61,500	0.00 USD	$0	SEC
Metagenomi Therapeutics, Inc.	Jun 12, 2025	AwardD	21,000	0.00 USD	$0	SEC
BIOMARIN PHARMACEUTICAL INC	May 22, 2025	Award	6,650	0.00 USD	$0	SEC
Seres Therapeutics, Inc.	Apr 11, 2025	AwardD	100,000	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Jun 12, 2024	AwardD	55,000	0.00 USD	$0	SEC
BIOMARIN PHARMACEUTICAL INC	May 23, 2024	Award	4,720	0.00 USD	$0	SEC
Seres Therapeutics, Inc.	Apr 8, 2024	AwardD	60,000	0.00 USD	$0	SEC
Metagenomi Therapeutics, Inc.	Apr 3, 2024	AwardD	78,636	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Jan 4, 2024	Award	6,112	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Oct 4, 2023	Award	11,011	0.00 USD	$0	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Metagenomi Therapeutics, Inc.	Jun 11, 2026	AwardD	21,000	0.00 USD	$0	SEC
BIOMARIN PHARMACEUTICAL INC	Jun 4, 2026	Award	7,490	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-450	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-544	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-2,460	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-1,002	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-125	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-368	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-800	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-513	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-2,200	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-734	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-1,000	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	OtherD	-1,800	—	—	SEC
Mersana Therapeutics, Inc.	Jan 6, 2026	Other	-1,567	—	—	SEC
Mersana Therapeutics, Inc.	Jun 13, 2025	AwardD	61,500	0.00 USD	$0	SEC
Metagenomi Therapeutics, Inc.	Jun 12, 2025	AwardD	21,000	0.00 USD	$0	SEC
BIOMARIN PHARMACEUTICAL INC	May 22, 2025	Award	6,650	0.00 USD	$0	SEC
Seres Therapeutics, Inc.	Apr 11, 2025	AwardD	100,000	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Jun 12, 2024	AwardD	55,000	0.00 USD	$0	SEC
BIOMARIN PHARMACEUTICAL INC	May 23, 2024	Award	4,720	0.00 USD	$0	SEC
Seres Therapeutics, Inc.	Apr 8, 2024	AwardD	60,000	0.00 USD	$0	SEC
Metagenomi Therapeutics, Inc.	Apr 3, 2024	AwardD	78,636	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Jan 4, 2024	Award	6,112	0.00 USD	$0	SEC
Mersana Therapeutics, Inc.	Oct 4, 2023	Award	11,011	0.00 USD	$0	SEC