Eric D. Shaff

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
18 Nov 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.5409	2,505	1.35 k	170,389
15 Nov 24	MCRB Seres Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	7,812	0.00	172,894
15 Nov 24	MCRB Seres Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	7,812	0.00	70,313
28 Oct 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.6901	8,748	6.04 k	165,082
27 Oct 24	MCRB Seres Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	27,837	0.00	173,830
27 Oct 24	MCRB Seres Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	27,837	0.00	0
16 Aug 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.84	2,518	2.12 k	145,993
15 Aug 24	MCRB Seres Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	7,813	0.00	148,511
15 Aug 24	MCRB Seres Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	7,813	0.00	78,125
15 May 24	MCRB Seres Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.94	2,435	2.29 k	140,698

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