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Cogent Biosciences, Inc.

For the period ended Dec 31, 2025. Filed Feb 17, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 17, 2026

COGT$33.54+6.0%Stored close · as of Nov 9, 2026

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Contents

Item 2. Properties

Waltham, Massachusetts

Our corporate headquarters are located in Waltham, Massachusetts, where we sublease approximately 17,749 square feet of office space pursuant to a sublease agreement that commenced in June 2022 and expires in September 2026. This facility primarily houses our clinical, regulatory, and administrative personnel.

In September 2025, we entered into a new lease agreement pursuant to which we will lease approximately 31,518 square feet of office space in Waltham, Massachusetts. This will serve as our corporate headquarters and replace our existing headquarters in Waltham, Massachusetts. This lease is expected to commence in May 2026.

Boulder, Colorado

We lease approximately 44,657 square feet of office and laboratory space in Boulder, Colorado. The lease has an initial term of 12 years, commencing in June 2022 and expiring in June 2035, with the option to extend for three successive five-year terms. This facility primarily houses our research and other administrative personnel.

We believe that our current facilities are adequate to meet our immediate needs.

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.