Who invested in Acelyrin?
3 investors are on record as having backed Acelyrin — Merged with Alumis in 2025, in Biotech. Each row below says whether the round came from the investor's own portfolio page or from the press.
acelyrin.comAcelyrin investors
Samsara Biocapital, LLCBacks Biotech companies.their site
Venbio Partners LLCLife sciences investor backing novel therapeutics with strategic guidance on IP, CMC, and…their site
1 more investors on record for Acelyrin.
The first two are open to everyone. A free account opens the rest — the fund, the round, the amount and where each number came from. No card, no demo call.
No round dates are on record for Acelyrin. A portfolio page names its companies far more often than it dates the cheque, and we would rather leave the field empty than guess it.
The funds that backed Acelyrin are in the directory.
If they wrote this cheque, they may write yours. Pitch2Fund scores your startup against every one of them, gives you the partner to write to, and drafts the email. Free.