Form 4: Seres Therapeutics Executive Sells Shares
Insider Transaction (Form 4)
Thomas Desrosier, See Remarks of Seres Therapeutics, Inc., sold 82 shares of common stock on August 15, 2026 for $4.55 per share.
Summary
- Option exercise/conversion: acquired 245 Common Stock on August 15, 2026; holds 8,199 after (Direct).
- Open-market sale: disposed of 82 Common Stock at $4.55 ($373) on August 17, 2026; holds 8,117 after (Direct).
- Option exercise/conversion: disposed of 133 Restricted Stock Units on August 15, 2026; holds 265 after (Direct).
- Option exercise/conversion: disposed of 112 Restricted Stock Units on August 15, 2026; holds 667 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $373 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Thomas Desrosier — Officer (See Remarks)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-15 | Option exercise/conversion | Common Stock | 245 | — | — | 8,199 |
| 2026-08-17 | Open-market sale | Common Stock | 82 | $5 | $373 | 8,117 |
| 2026-08-15 | Option exercise/conversion | Restricted Stock Units | 133 | — | — | 265 |
| 2026-08-15 | Option exercise/conversion | Restricted Stock Units | 112 | — | — | 667 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-15 | Option exercise/conversion (245 shares) |
| 2026-08-17 | Open-market sale (82 shares) |
| 2026-08-15 | Option exercise/conversion (133 shares) |
| 2026-08-15 | Option exercise/conversion (112 shares) |
Keywords
insider transaction, Form 4, MCRB, Seres Therapeutics, Inc., bearish, Thomas Desrosier
Disclaimer:The information provided here is for general informational purposes only and does not constitute financial advice, recommendation, or endorsement of any kind. It may contain errors or omissions. You should not rely on this information to make financial decisions. Always seek the advice of a qualified financial professional before making any investment or financial decisions. Use of this information is at your own risk.