Matthew R. Henn

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
7 Feb 25	MCRB Seres Therapeutics	Stock Option Common Stock	Grant	Acquire A	No	No	0.782	650,000	508.30 k	650,000
18 Nov 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.5407	927	501.23	77,770
15 Nov 24	MCRB Seres Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	2,812	0.00	78,697
15 Nov 24	MCRB Seres Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	2,812	0.00	25,313
28 Oct 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.6901	3,984	2.75 k	75,885
27 Oct 24	MCRB Seres Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	12,622	0.00	79,869
27 Oct 24	MCRB Seres Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	12,622	0.00	0
16 Aug 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.84	923	775.32	67,247
15 Aug 24	MCRB Seres Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	2,813	0.00	68,170
15 Aug 24	MCRB Seres Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	2,813	0.00	28,125

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.