Addition Therapeutics, Inc.

Biotechnology company · South San Francisco, California, United States

Addition Therapeutics, Inc. is a biotechnology company headquartered in South San Francisco, California, United States. Its earliest recorded incorporation is in 2021. It has reported private securities offerings to the US SEC, most recently $28 million sold in a notice filed in 2025.

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Addition Therapeutics at a glance

Typebiotechnology company

HeadquartersSouth San Francisco, California, United States

Earliest incorporation on record2021

SEC CIK2102340

What does Addition Therapeutics do?

Private fundraising reported to the SEC

1 Form D notice; the most recent reported $28 million sold (2025).

Frequently asked questions about Addition Therapeutics

Where is Addition Therapeutics headquartered?

Addition Therapeutics, Inc. is headquartered in South San Francisco, California, United States.

What does Addition Therapeutics do?

Addition Therapeutics, Inc. is a biotechnology company.

When was Addition Therapeutics founded?

The earliest incorporation on record for Addition Therapeutics, Inc. is in 2021, according to public company registers.

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Last updated 2026-09-23. Data licences