Teresa L. Young - 26 Sep 2025 Form 4 Insider Report for Seres Therapeutics, Inc. (MCRB)

Role
EVP, Chief Commercial & Strategy Officer
Signature
/s/ Thomas J. DesRosier, attorney-in-fact for Teresa L. Young
Issuer symbol
MCRB
Transactions as of
26 Sep 2025
Transactions value $
$0
Form type
4
Filing time
30 Sep 2025, 16:30:06 UTC
Previous filing
19 Aug 2025
Next filing
18 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Young Teresa L. EVP, Chief Commercial & Strategy Officer C/O SERES THERAPEUTICS, INC., 101 CAMBRIDGE PARK DRIVE, CAMBRIDGE /s/ Thomas J. DesRosier, attorney-in-fact for Teresa L. Young 30 Sep 2025 0001814656

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MCRB Restricted Stock Units Award $0 +4K $0.00 4K 26 Sep 2025 Common Stock 4K Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock.
F2 The RSUs will vest in a single installment on November 15, 2025, subject to the Reporting Person's satisfaction of the terms contemplated in the award agreement.The RSUs have no expiration date.

Remarks:

EVP, Chief Commercial & Strategy Officer