Rosiello Robert L.
SEC insider (Form 3/4/5 filer). CIK 0001645041. Director at Seres Therapeutics, Inc. (MCRB) and 2 other issuers. 6 reported Form 4/5 transactions since Sep 2024; latest on Jul 8, 2026. Located in CAMBRIDGE, MA.
Companies Rosiello Robert L. has filed insider reports for
- Seres Therapeutics, Inc. (MCRB): Director
- Sana Biotechnology, Inc. (SANA): Director
- Omega Therapeutics, Inc. (OMGA): Director
Rosiello Robert L.
CIK: 0001645041
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (6 total)
- Jul 8, 2026MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
6.5K shares- - Jul 1, 2026MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
7.5K shares- - Jun 4, 2026SANA
Sana Biotechnology, Inc.
AwardDirectStock Option (Right to Buy)
90K shares- - Aug 5, 2025MCRB
Seres Therapeutics, Inc.
AwardDirectStock Option (right to buy)
10K shares- - Jun 5, 2025SANA
Sana Biotechnology, Inc.
AwardDirectStock Option (Right to Buy)
115K shares- - Oct 2, 2024OMGA
Omega Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
50K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jul 8, 2026 |  MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 6,500 | - | - | Direct |
| Jul 1, 2026 | MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 7,508 | - | - | Direct |
| Jun 4, 2026 |  SANA Sana Biotechnology, Inc. | Award Stock Option (Right to Buy) | 90,000 | - | - | Direct |
| Aug 5, 2025 | MCRB Seres Therapeutics, Inc. | Award Stock Option (right to buy) | 10,000 | - | - | Direct |
| Jun 5, 2025 | SANA Sana Biotechnology, Inc. | Award Stock Option (Right to Buy) | 115,000 | - | - | Direct |
| Oct 2, 2024 |  OMGA Omega Therapeutics, Inc. | Award Stock Option (Right to Buy) | 50,000 | - | - | Direct |
1-6 of 6 transactions