Companies / Addition Therapeutics
Addition Therapeutics
South San Francisco, California, United States
Addition Therapeutics is advancing a pipeline of therapeutics to deliver functional cures for patients with severe lifelong diseases
Addition Therapeutics, based in South San Francisco, California, United States, has 4 investors on file, among them Abingworth, Osage University Partners and Pivotal Life Sciences. Its latest round on record is Series A, 17 Dec 2025. Its site was last checked 12 Nov 2026: site answers.
Funding
1 round on recordRound sizes and total raised are on Fundup AI, our sister product for funding data.
Investors
4 investors on file| Investor | Evidence | Type |
|---|---|---|
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Page + round | Venture capital | |
| Page + round | Venture capital |
A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data
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