May 18, 2026 · Form 4 insider transaction
Shaff Eric D. sold 259 shares of Seres Therapeutics, Inc. at $7.53 per share, a transaction worth $2.0K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 1 day after the transaction.
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 instruction adopted by the reporting person on March 2, 2023, solely with the intent to cover taxes in connection with the vesting of the restricted stock units.