Eric D. Shaff

Insider Reports History

Location
Cambridge, MA
Signature
/s/ Thomas J. DesRosier, attorney-in-fact for Eric D. Shaff
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Eric D. Shaff:

Company Role Class Num Shares Value Price $ Report Date Ownership
Seres Therapeutics, Inc. Director Common Stock 11,113 $192,254 $17.30 15 Nov 2025 Direct
Seres Therapeutics, Inc. Director Restricted Stock Units 2,989 $64,586 $0.8105 15 Nov 2025 Direct
Seres Therapeutics, Inc. Director Stock Option (Right to Buy) 1,950,000 07 Feb 2025 Direct
Sigilon Therapeutics, Inc. Director Stock Option (Right to Buy) 0 $0.7500 11 Aug 2023 Direct

Insider Reports Filed by Eric D. Shaff

Symbol Company Period Transactions Value $ Form Type Role Filing Time
MCRB Seres Therapeutics, Inc. 15 Nov 2025 5 -$3,754 4 Director 18 Nov 2025, 16:30
MCRB Seres Therapeutics, Inc. 15 Aug 2025 5 -$3,613 4 Director 19 Aug 2025, 16:08
MCRB Seres Therapeutics, Inc. 15 May 2025 5 -$1,602 4 CEO and President, Director 19 May 2025, 16:05
MCRB Seres Therapeutics, Inc. 15 Feb 2025 5 -$10,314 4 CEO and President, Director 19 Feb 2025, 20:08
MCRB Seres Therapeutics, Inc. 07 Feb 2025 1 $0 4 CEO and President, Director 11 Feb 2025, 16:15
MCRB Seres Therapeutics, Inc. 15 Nov 2024 3 -$1,355 4 CEO and President, Director 19 Nov 2024, 16:15
MCRB Seres Therapeutics, Inc. 27 Oct 2024 3 -$6,037 4 CEO and President, Director 29 Oct 2024, 18:24
MCRB Seres Therapeutics, Inc. 15 Aug 2024 3 -$2,115 4 CEO and President, Director 19 Aug 2024, 17:38
MCRB Seres Therapeutics, Inc. 15 May 2024 3 -$2,289 4 CEO and President, Director 17 May 2024, 20:18
MCRB Seres Therapeutics, Inc. 14 Feb 2024 6 -$12,473 4 CEO and President, Director 16 Feb 2024, 21:42
MCRB Seres Therapeutics, Inc. 27 Oct 2023 4 -$11,545 4 CEO and President, Director 31 Oct 2023, 21:40
SGTX Sigilon Therapeutics, Inc. 11 Aug 2023 2 -$7,952 4 Director 11 Aug 2023, 16:10
SGTX Sigilon Therapeutics, Inc. 19 May 2023 1 $0 4 Director 22 May 2023, 16:20
MCRB Seres Therapeutics, Inc. 03 Feb 2023 2 $0 4 CEO and President, Director 07 Feb 2023, 16:45
MCRB Seres Therapeutics, Inc. 05 Jul 2022 1 +$200,000 4 CEO and President, Director 06 Jul 2022, 19:21
SGTX Sigilon Therapeutics, Inc. 26 May 2022 1 $0 4 Director 27 May 2022, 17:01
MCRB Seres Therapeutics, Inc. 04 Feb 2022 1 $0 4 President, CEO, Director 08 Feb 2022, 20:30
SGTX Sigilon Therapeutics, Inc. 24 Jun 2021 1 +$88,613 4 Director 28 Jun 2021, 07:15