Synlogic, Inc.

SYBX· OTC

Since Oct 8, 2025

Transactions: 1
Purchases: 0
Sales: 1
Purchase value: $0.00
Sale value: $284.17

Values are shares multiplied by reported price when both were supplied, each trade counted once however many filers reported it.

Dooley Mary BethSee Remarks below

Filed Oct 31, 2025Period of report Oct 29, 20250001193125-25-260649

Transaction	Security	Shares	Price	ValueValue (shares × price)	Held after	Ownership
SaleOct 29, 2025	Common Stock^F1	157	$1.81	$284.17	12,744	Direct

Filing footnotes · 1

F1Represents the number of shares sold by the reporting person on October 29, 2025 to cover the tax liability in connection with the vesting of a restricted stock award, vesting on October 28, 2025, that was granted in 2022.

Open on SEC EDGAR

P and S transaction codes only. Grants, gifts, option exercises, tax withholding, and Form 144 notices are not counted as purchases or sales. A row whose filed price fails a plausibility check, or that is not common stock, is listed but left out of the values; a trade reported by several filers is counted once.