Flagship Pioneering Fund VII General Partner LLC - Jul 5, 2022 Form 3 Insider Report for Seres Therapeutics, Inc. (MCRB)

Role: 10%+ Owner
Signature: Flagship Pioneering Fund VII General Partner LLC, By: Flagship Pioneering, Inc., its manager, By: /s/ Noubar B. Afeyan, PhD., Name: Noubar B. Afeyan, Ph.D., Title: Chief Executive Officer
Stock symbol: MCRB
Transactions as of: Jul 5, 2022
Transactions value $: $0
Form type: 3
Date filed: 7/7/2022, 05:00 PM
Previous filing: Jun 1, 2022
Next filing: Feb 27, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	MCRB	Common Stock						5.83M	Jul 5, 2022	By Flagship Pioneering Fund VII, L.P.	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On July 5, 2022, Flagship Pioneering Fund VII, L.P. ("Flagship Fund VII") acquired 5,825,495 shares of the Issuer's Common Stock in a registered direct offering at a price of $3.15 per share.
F2	Shares held by Flagship Fund VII. Flagship Pioneering Fund VII General Partner LLC ("Flagship Fund VII GP") is the general partner of Flagship Fund VII. Flagship Pioneering, Inc. ("Flagship Pioneering") is the manager of Flagship Fund VII GP. Dr. Afeyan is the Chief Executive Officer, sole shareholder and director of Flagship Pioneering. Each of the reporting persons except Flagship Fund VII disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.

Content

On July 5, 2022, Flagship Pioneering Fund VII, L.P. ("Flagship Fund VII") acquired 5,825,495 shares of the Issuer's Common Stock in a registered direct offering at a price of $3.15 per share.

Shares held by Flagship Fund VII. Flagship Pioneering Fund VII General Partner LLC ("Flagship Fund VII GP") is the general partner of Flagship Fund VII. Flagship Pioneering, Inc. ("Flagship Pioneering") is the manager of Flagship Fund VII GP. Dr. Afeyan is the Chief Executive Officer, sole shareholder and director of Flagship Pioneering. Each of the reporting persons except Flagship Fund VII disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.