TERESA L YOUNG plan to sell securities of SERES THERAPEUTICS, INC. under Form 144

TERESA L YOUNG filed Form 144 to notify SEC of plan to sell 167 units of SERES THERAPEUTICS, INC. securities around 2026-05-19, with aggregate market value of $1,284.23. The total outstanding units is 9683934.0. The amount planned to be sold represents 0.00% of total outstanding units; Recent transactions in past 3 months include: On 05/18/2026, sold 63 units for $474.39; On 03/17/2026, sold 8553 units for $77966.58;