Henn Matthew R
SEC insider (Form 3/4/5 filer). CIK 0001767321. Officer at Seres Therapeutics, Inc. (MCRB). 27 reported Form 4/5 transactions since Sep 2024; latest on Aug 17, 2026. Located in CAMBRIDGE, MA.
Companies Henn Matthew R has filed insider reports for
- Seres Therapeutics, Inc. (MCRB): Officer, See Remarks
Henn Matthew R
CIK: 0001767321
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Seres Therapeutics, Inc.
Discretionary Trading P&L
Holdings
Transaction History (27 total)
- Aug 17, 2026MCRB
Seres Therapeutics, Inc.
SaleDirect81 shares at avg. $4.55$368.55 - Aug 15, 2026MCRB
Seres Therapeutics, Inc.
ExerciseDirect238 shares- - Jul 8, 2026MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
25K shares- - May 18, 2026MCRB
Seres Therapeutics, Inc.
SaleDirect77 shares at avg. $7.53$579.81 - May 15, 2026MCRB
Seres Therapeutics, Inc.
ExerciseDirect238 shares- - Mar 4, 2026MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
75K shares- - Feb 15, 2026MCRB
Seres Therapeutics, Inc.
SaleDirect89 shares at avg. $8.47$753.83 - Feb 15, 2026MCRB
Seres Therapeutics, Inc.
ExerciseDirect239 shares- - Nov 15, 2025MCRB
Seres Therapeutics, Inc.
ExerciseDirect98 shares- - Nov 15, 2025MCRB
Seres Therapeutics, Inc.
ExerciseDirect4K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 17, 2026 | MCRB Seres Therapeutics, Inc. | Sale | 81 | $4.55 | $369 | Direct |
| Aug 15, 2026 | MCRB Seres Therapeutics, Inc. | Exercise | 238 | - | $0 | Direct |
| Jul 8, 2026 | MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 25,000 | - | - | Direct |
| May 18, 2026 | MCRB Seres Therapeutics, Inc. | Sale | 77 | $7.53 | $580 | Direct |
| May 15, 2026 | MCRB Seres Therapeutics, Inc. | Exercise | 238 | - | $0 | Direct |
| Mar 4, 2026 | MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 75,000 | - | - | Direct |
| Feb 15, 2026 | MCRB Seres Therapeutics, Inc. | Sale | 89 | $8.47 | $754 | Direct |
| Feb 15, 2026 | MCRB Seres Therapeutics, Inc. | Exercise | 239 | - | $0 | Direct |
| Nov 15, 2025 | MCRB Seres Therapeutics, Inc. | Exercise | 98 | - | - | Direct |
| Nov 15, 2025 | MCRB Seres Therapeutics, Inc. | Exercise | 3,998 | - | - | Direct |
1-10 of 27 transactions