Insider Transactions Reported by 11 Insiders of Aptinyx Inc.

Location: Evanston, IL

Quick Takeaways

Aptinyx Inc. has 11 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are not currently available.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 16 Apr 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

Aptinyx Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Valuation	Report Date
Norbert G. Riedel	EXECUTIVE CHAIRMAN OF THE BOD, Director	Mixed	03 Jan 2023
Gosebruch Henry O	Director	Mixed	26 May 2022
Ashish Khanna	Cfo And Cbo	Mixed	03 Jan 2023
Rachel E. Sherman	Director	Mixed	26 May 2022
Terry P. Gould	Director	Mixed	26 May 2022
Patrick G. Enright	Director	Mixed	26 May 2022
Joan W. Miller	Director	Mixed	26 May 2022
Andrew Kidd	PRESIDENT AND CEO, Director	Mixed	03 Jan 2023
Gilmore Neil O'Neill	Director	Mixed	26 May 2022
Adam Koppel	Director, 10%+ Owner	Mixed	26 May 2022
Robert J. Hombach)	Director	Mixed	26 May 2022

Top shareholders of Aptinyx Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Andrew Kidd	3/4/5	PRESIDENT AND CEO, Director	— class O/S missing	700,000	—	—	03 Jan 2023	3/4/5
Norbert G. Riedel	3/4/5	EXECUTIVE CHAIRMAN OF THE BOD, Director	— class O/S missing	420,000	—	—	03 Jan 2023	3/4/5
Ashish Khanna	3/4/5	CFO AND CBO	— class O/S missing	375,000	—	—	03 Jan 2023	3/4/5
Adam Koppel	3/4/5	Director, 10%+ Owner	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Gilmore Neil O'Neill	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Gosebruch Henry O	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Joan W. Miller	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Patrick G. Enright	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Rachel E. Sherman	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Robert J. Hombach)	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5
Terry P. Gould	3/4/5	Director	— class O/S missing	40,000	—	—	26 May 2022	3/4/5

Recent Insider Transactions by Companies or Individuals for Aptinyx Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
No insider transactions were found in the last 12 months for this issuer.

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