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Filing Details

Issuer

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

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1253886	G Patrick Enright	C/O Longitude Capital Partners Ii, Llc 2740 Sand Hill Road, 2Nd Floor Menlo Park CA 94025		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2020-01-10	95,000	$3.00	95,000	No	4	P	Direct
Common Stock	Acquisiton	2020-01-10	166,667	$3.00	3,356,746	No	4	P	Indirect	By: Longitude Venture Partners II, L.P.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Direct
No	4	P	Indirect	By: Longitude Venture Partners II, L.P.

Footnotes

These shares are held directly by Longitude Venture Partners II, L.P. ("Longitude Venture II"). Longitude Capital Partners II, LLC ("Longitude Capital II") is the general partner of Longitude Venture II and may be deemed to share voting and investment power over the shares of the Issuer held by Longitude Venture II. Patrick Enright ("Mr. Enright") is a managing member of Longitude Capital II and may be deemed to share voting and investment power over the shares of the Issuer held by Longitude Venture II. Mr. Enright disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.