MCRB - Seres Therapeutics, Inc.

Name: Seres Therapeutics, Inc. Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

Over the past 90 days, insiders at Seres Therapeutics, Inc. (MCRB) have been net sellers, shedding 490 shares worth roughly $2K on balance.

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Insider Ownership

Role	Insider	Shares	Value	30d
Dir	Eric D. Shaff	12.5K	$24.5K	-
Other	Kelly Brady	8.7K	$17.0K	-
Other	Teresa L. Young	8.6K	$16.8K	-
Other	Thomas DesRosier	8.1K	$15.9K	-
Other	Matthew R Henn	8.0K	$15.7K	-

Activity

Buys and sells only

Transactions

10 filings · page 2

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Feb 15, 2026	Thomas DesRosier69	See Remarks	Sale+OE10b5-1	78	$8.47	$660.66	-1.0%	-7.7%	-
Feb 15, 2026	Eric D. Shaff69	Director	Sale+OE10b5-1	259	$8.47	$2,193.73	-2.2%	-7.7%	-
Nov 15, 2025	Eric D. Shaff69	Director	Sale+OE10b5-1	217	$17.30	$3,754.10	-1.9%	-49.2%	-
Nov 15, 2025	Thomas DesRosier69	See Remarks	Sale+OE10b5-1	76	$17.30	$1,314.80	-1.0%	-49.2%	-
Nov 15, 2025	Matthew R Henn69	See Remarks	Sale+OE10b5-1	1,257	$17.30	$21,746.10	-14.3%	-49.2%	-
Nov 15, 2025	Teresa L. Young72	See Remarks	Sale+OE10b5-1	1,042	$17.30	$18,026.60	-11.0%	-49.2%	-
Aug 18, 2025	Thomas DesRosier69	See Remarks	Sale+OE10b5-1	76	$16.65	$1,265.40	-1.0%	+22.3%	-75.5%
Aug 18, 2025	Eric D. Shaff69	Director	Sale+OE10b5-1	217	$16.65	$3,613.05	-2.0%	+22.3%	-75.5%
Aug 18, 2025	Matthew R Henn69	See Remarks	Sale+OE10b5-1	73	$16.65	$1,215.45	-1.6%	+22.3%	-75.5%
Aug 18, 2025	Teresa L. Young72	See Remarks	Sale+OE10b5-1	59	$16.65	$982.35	-1.1%	+22.3%	-75.5%

Understand these filings

How to Read SEC Form 4 Filings →Understanding Insider Buying Signals →What is Insider Trading? A Complete Guide →Cluster Buying: When Multiple Insiders Buy Together →

Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC