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Filing Details

Accession Number:: 0000899243-22-025721
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2022-07-07 17:00:24
Reporting Period:: 2022-07-05

Accepted Time:: 2022-07-07 17:00:24
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1609809	Seres Therapeutics Inc.	MCRB	()	4

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1222012	Noubar Afeyan	55 Cambridge Parkway, Suite 800E Cambridge MA 02142	No	No	Yes	No
1400240	Flagship Pioneering Inc.	55 Cambridge Parkway, Suite 800E Cambridge MA 02142	No	No	Yes	No
1780951	Nutritional Health Ltp Fund General Partner Llc	55 Cambridge Parkway, Suite 800E Cambridge MA 02142	No	No	Yes	No
1780956	Nutritional Health Ltp Fund, L.p.	55 Cambridge Parkway, Suite 800E Cambridge MA 02142	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2022-07-05	2,912,748	$3.15	5,875,711	No	4	P	Indirect	By Nutritional Health LTP Fund, L.P.
Common Stock	Acquisiton	2022-07-05	5,825,495	$3.15	5,825,495	No	4	P	Indirect	By Flagship Pioneering Fund VII, L.P.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Nutritional Health LTP Fund, L.P.
No	4	P	Indirect	By Flagship Pioneering Fund VII, L.P.

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	4,434,600	Indirect	By Flagship Ventures Fund IV, L.P.
Common Stock	1,283,282	Indirect	By Flagship Ventures Fund IV-Rx, L.P.
Common Stock	2,962,963	Indirect	By Flagship Pioneering Fund VI, L.P.
Common Stock	2,734,994	Indirect	By Flagship VentureLabs IV LLC
Common Stock	376,018	Indirect	By Noubar B. Afeyan, Ph.D.

Footnotes

On July 5, 2022, Nutritional Health LTP Fund, L.P. ("Nutritional LTP") and Flagship Pioneering Fund VII, L.P. ("Flagship Fund VII") acquired 2,912,748 shares and 5,825,495 shares, respectively, of the Issuer's Common Stock in a registered direct offering at a price of $3.15 per share.
Shares held by Nutritional LTP. Nutritional Health LTP Fund General Partner LLC ("Nutritional LTP GP") is the general partner of Nutritional LTP. Noubar B. Afeyan, Ph.D. ("Dr. Afeyan") is the sole member and manager of Nutritional LTP GP. Each of the reporting persons except for Nutritional LTP disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
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 disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
Shares held by Flagship Ventures Fund IV, L.P. ("Flagship Fund IV"). Flagship Ventures Fund IV General Partner LLC ("Flagship Fund IV GP") is the general partner of Flagship Fund IV. Dr. Afeyan is the sole manager of Flagship Fund IV GP. Each of the reporting persons except for Flagship Fund IV disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
Shares held by Flagship Ventures Fund IV-Rx, L.P. ("Flagship Fund IV-Rx"). Flagship Fund IV GP is the general partner of Flagship Fund IV-Rx. Dr. Afeyan is the sole manager of Flagship Fund IV GP. Each of the reporting persons except for Flagship Fund IV-Rx disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
Shares held by Flagship Pioneering Fund VI, L.P. ("Flagship Fund VI"). Flagship Pioneering Fund VI General Partner LLC ("Flagship Fund VI GP") is the general partner of Flagship Fund VI. Flagship Pioneering is the manager of Flagship Fund VI GP. Dr. Afeyan is the CEO, sole shareholder and director of Flagship Pioneering. Each of the reporting persons except Flagship Fund VI disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
Shares held by Flagship VentureLabs IV LLC ("VentureLabs IV"). Flagship Fund IV is a member of VentureLabs IV and also serves as its manager. Each of the reporting persons except VentureLabs IV disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein.
Shares held by Dr. Afeyan. Each of the reporting persons except for Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein. Includes 12,853 shares held through a trust for the benefit of Dr. Afeyan's children. Dr. Afeyan disclaims Section 16 beneficial ownership of these shares except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such shares for Section 16 or any other purpose.