FAQs

Cogent Biosciences is headquartered at 275 Wyman Street, Waltham, MA 02451. The main phone number is (617) 945-5576.

December 31

Cogent Biosciences’ common stock is traded on the Nasdaq Global Select Market under the symbol COGT, and the CUSIP number for its common stock is 19240Q 201

Computershare customer service can be accessed online at:

www-us.computershare.com/investor/Contact/Enquiry

PricewaterhouseCoopers LLP

Cogent Biosciences’ SEC filings can be viewed at here or at www.sec.gov.

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You can submit queries to Cogent Biosciences’ Investor Relations department by contacting

investorrelations@cogentbio.com

FAQs

Where is Cogent Biosciences’ corporate headquarters?

What is Cogent Biosciences’ fiscal year?

Where is Cogent Biosciences stock traded and what is the stock symbol?

Who is Cogent Biosciences’ transfer agent?

Who is Cogent Biosciences’ independent auditor?

How can I obtain further information or materials on Cogent Biosciences?

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Whom should I contact regarding investor inquiries?