Shaff Eric D.

Director | CEO And President | See Remarks +1 more

1 company

Strong

Trades Analyzed

12M Win Rate

62.5%

Avg 3M Return

-1.3%

Avg 12M Return

+7.4%

Shaff Eric D. is a Director at Seres Therapeutics, Inc.. Recent SEC Form 4 filings include 0 buys and 10 sells.

Estimated insider holdings value: $75K based on current market prices.

Holdings by Company

MCRBNov 15, 2025

Current Shares11.3K

Value$74.9K

Net Activity-86,083

Bought: 0Sold: 86.1K

Showing 10 filings

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Nov 15, 2025	MCRB Seres Therapeutics, Inc.	Director	Sale+OE	217	$17.30	$3,754.10	-1.9%	-49.2%	-
Aug 18, 2025	MCRB Seres Therapeutics, Inc.	Director	Sale+OE	217	$16.65	$3,613.05	-2.0%	+22.3%	-
May 16, 2025	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	220	$7.28	$1,601.60	-2.1%	+126.0%	+2.4%
Feb 18, 2025	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	12,726	$0.81	$10,314.42	-6.2%	-52.0%	-50.5%
Nov 18, 2024	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	2,505	$0.54	$1,354.95	-1.4%	+43.6%	+113.4%
Oct 28, 2024	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	8,748	$0.69	$6,036.99	-5.0%	+20.2%	+22.6%
Aug 16, 2024	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	2,518	$0.84	$2,115.12	-1.7%	-32.7%	-5.1%
May 15, 2024	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	2,435	$0.94	$2,288.90	-1.7%	-13.6%	-61.3%
Feb 16, 2024	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	11,549	$1.08	$12,472.92	-7.9%	-12.0%	-20.7%
Oct 30, 2023	MCRB Seres Therapeutics, Inc.	CEO And President	Sale+OE	8,552	$1.35	$11,545.20	-6.9%	-13.8%	-46.8%