Thorell Marella
SEC insider (Form 3/4/5 filer). CIK 0001826323. Officer at Seres Therapeutics, Inc. (MCRB) and 1 other issuer. 4 reported Form 4/5 transactions since Sep 2024; latest on Jul 8, 2026. Located in CAMBRIDGE, MA.
Companies Thorell Marella has filed insider reports for
- Seres Therapeutics, Inc. (MCRB): Officer, See Remarks
- ESSA Pharma Inc. (EPIX): Director
Thorell Marella
CIK: 0001826323
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)3 (75.0%)
Compensation grants
Other (G, F, J, C, D, …)1 (25.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Jul 8, 2026MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
7.5K shares- - Mar 4, 2026MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
22.5K shares- - Oct 9, 2025EPIX
ESSA Pharma Inc.
DispositionDirect2.9K shares- - Feb 7, 2025MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
650K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jul 8, 2026 |  MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 7,500 | - | - | Direct |
| Mar 4, 2026 | MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 22,500 | - | - | Direct |
| Oct 9, 2025 |  EPIX ESSA Pharma Inc. | Disposition | 2,881 | - | - | Direct |
| Feb 7, 2025 | MCRB Seres Therapeutics, Inc. | Award Stock Option (Right to Buy) | 650,000 | - | - | Direct |
1-4 of 4 transactions