Colossal Biosciences

Biotech · Dallas, US

Dallas de-extinction startup that uses genetic engineering to bring back extinct species (dodo, mammoth).

Founders

Ben Lamm (United States · ♂) — A serial tech entrepreneur who founded and sold five companies; after meeting geneticist George Church he co-founded Colossal in 2021 to commercialize de-extinction and genetic engineering at scale.
George Church (United States · ♂) — A Harvard geneticist and CRISPR pioneer whose lab work on mammoth genetics and gene editing became the scientific foundation he partnered with Ben Lamm to turn into Colossal Biosciences.

Date	Round	Amount
Sep 2025	Funding round Colossal Biosciences raised another $120 million, pushing its valuation above $10.3 billion, for its avian de-extinction projects.	$120M
Jan 2023	Series B Colossal Biosciences raised a $150M Series B led by US Innovative Technology Fund at a $1.5B valuation, with In-Q-Tel, Breyer Capital and others.	$150M

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