Where is Aptinyx's corporate headquarters?

909 Davis Street, Suite 600
Evanston, IL 60201

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When was Aptinyx founded?

Aptinyx was founded in 2015 in the state of Delaware.

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When did Aptinyx go public?

Aptinyx’s initial public offering (IPO) took place on June 20, 2018.

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What is Aptinyx’s fiscal year-end?

Aptinyx’s fiscal year-end is December 31st.

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How is Aptinyx’s stock traded?

Aptinyx Inc. is traded on the NASDAQ Global Market under the ticker symbol APTX and its CUSIP number is 03836N 103.

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Who is Aptinyx's transfer agent?

Computershare Trust Company
250 Royall Street
Canton, Massachusetts 02021
(800) 962-4284
https://www.computershare.com/us

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How do I transfer stock, change the address on my shareholder account, or replace a lost stock certificate?

Contact Aptinyx’s transfer agent, Computershare Trust Company
250 Royall Street, Canton, Massachusetts 02021
(800) 962-4284
https://www.computershare.com/us

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Does Aptinyx have a direct stock purchase plan?

Aptinyx does not have a direct stock purchase plan. Shares can be purchased through a stockbroker of your choice.

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Who is Aptinyx's auditor?

Deloitte & Touche LLP
111 S. Wacker Drive
Chicago, Illinois 60606
(312) 486-1000

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Where can I find out more about Aptinyx?

If you are interested in learning more about Aptinyx, please submit an inquiry here.

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Where can I get the latest corporate news releases and financial reports?

Aptinyx’s press release archives can be accessed at https://ir.aptinyx.com/press-releases, and financial reports can be accessed in the Investor Relations section of Aptinyx’s website here https://ir.aptinyx.com/financials-filings/sec-filings.

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How can I view documents Aptinyx has filed with the Securities & Exchange Commission (SEC), including Forms 10-K and 10-Q?

Aptinyx SEC filings can be accessed at https://ir.aptinyx.com/financials-filings/sec-filings.

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Who makes up the Aptinyx Executive Management team and Board of Directors?

Aptinyx’s Executive Management team can be viewed here, and the company’s Board of Directors can be viewed here.

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Whom should I contact regarding investor inquiries?

You can submit queries to Aptinyx’s investor relations department by contacting investors@aptinyx.com or (847) 871-0377.

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