Shaff Eric D. sold MCRB
August 17, 2026 · Form 4 insider transaction
Shaff Eric D. sold 263 shares of Seres Therapeutics, Inc. at $4.55 per share, a transaction worth $1.2K. 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.
Direction
Disposed (sell-side)
Shares
263
Price
$4.55
Total value
$1.2K
InsiderShaff Eric D.
RoleDirector
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateAugust 17, 2026
Filing dateAugust 18, 2026
Shares owned after12,499
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
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.