Accipiter Biosciences
Accipiter Biosciences Inc.
Accipiter Biosciences designs de novo, multifunctional protein biologics to treat complex diseases through advanced computational protein design.
accipiterbio.com · Seattle, WA
Funding event
The round itself, as filedInferred stageSeries A
Sold of offered$10.5M of $10.5M
Filed2026-07-28
Days since filing68
- Exemption claimed
- Rule 506(b)
- First-ever Form D
- No
- Date of first sale
- 2026-07-21
Investors
No investors named: Form D does not list them
Officers on the filing
Names and roles as filed; addresses are never stored- Matthew BickExecutive Officer · Director · Promoter
- Hector De Jesus Rincon AranoExecutive Officer · Director · Promoter
- Javier CastellanosExecutive Officer · Director · Promoter
- Heather RedmanDirector
- Randall SchatzmanDirector
- William CanestaroExecutive Officer
- Jose Antonio Mesa CejudoDirector
Health flags
Three flags, each with the raw inputs behind it · as of 2026-10-03UndersubscribedNot flagged100% sold2.4 months since first sale
Prior raiseNot flaggedPrior raise not known—
AmendedNot flaggedNo amendmentNo D/A on file
Open roles
On the employer's own careers page · checked 2026-09-240
Pre-posting windowNot enough dataShown once this sector and stage have 20 observed lags from filing to first posting.
No open roles foundWe read careers pages daily.
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