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Filing Details

Accession Number:: 0000899243-20-029321
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2020-10-27 17:07:36
Reporting Period:: 2020-10-26

Accepted Time:: 2020-10-27 17:07:36
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1674365	Aptinyx Inc.	APTX	()	4

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1578965	Adam Koppel	C/O Bain Capital Life Sciences Investors 200 Clarendon Street Boston MA 02116	Yes	No	Yes	No
1687968	Bain Capital Life Sciences Fund, L.p.	200 Clarendon Street Boston MA 02116	No	No	Yes	No
1702921	Bcip Life Sciences Associates, Lp	200 Clarendon Street Boston MA 02116	No	No	Yes	No
1702957	Lawrence Jeffrey Schwartz	200 Clarendon Street Boston MA 02116	No	No	Yes	No
1703030	Bain Capital Life Sciences Partners, Lp	200 Clarendon Street Boston MA 02116	No	No	Yes	No
1703031	Bain Capital Life Sciences Investors, Llc	200 Clarendon Street Boston MA 02116	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	2020-10-26	3,333,333	$3.00	8,891,758	No	4	P	Indirect	See footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See footnotes

Footnotes

On October 26, 2020, Bain Capital Life Sciences Fund, L.P. ("BCLS") and BCIP Life Sciences Fund, LP ("BCIPLS and, together with BCLS, the "Bain Capital Life Sciences Entities") purchased an aggregate of 3,333,333 shares of Common Stock in an underwritten public offering at a price per share of $3.00. BCLS purchased 3,023,816 of such shares and BCIPLS purchased 309,517 of such shares. Following such purchases, BCLS holds 8,066,113 shares of Common Stock and BCIPLS holds 825,645 shares of Common Stock.
Bain Capital Life Sciences Partners, LP ("BCLSP") is the general partner of BCLS. As a result, BCLSP may be deemed to share voting and dispositive power with respect to the shares of Common Stock held by BCLS. BCLSP disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.
Bain Capital Life Sciences Investors, LLC ("BCLSI"), whose managers are Jeffrey Schwartz and Adam Koppel, is the general partner of BCLSP and governs the investment strategy and decision-making process with respect to investments held by BCIPLS, whose general partner is Boylston Coinvestors, LLC. As a result, each of BCLSI, Mr. Schwartz and Dr. Koppel may be deemed to share voting and dispositive power with respect to the shares of Common Stock held by the Bain Capital Life Sciences Entities. BCLSI, Mr. Schwartz and Dr. Koppel each disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.
Adam Koppel is a director of the Issuer.