Diligence memo · auto-generated · as of July 3, 2026
Bird Rock Bio, Inc.
Bird Rock Bio, Inc. has raised $53M over 5 rounds; too few niche peers to rank its valuation yet.
Businessfiled
Bird Rock Bio, Inc. operates in Biotech / Pharma, based in LA JOLLA.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
Bird Rock Bio, Inc. has raised $53M in disclosed capital across 5 recorded rounds, aggregated from public filings. Its latest round is modeled as Series B (a $15M–$40M round).
Largest single filing: $40M on 2008-12-09.
Most recent recorded round closed around 2016-12-22.
Valuation (modeled)modeled
Provath models Bird Rock Bio, Inc. at approximately $92M (range $5.1M–$354M). This is an algorithmic estimate from round sizes and same-niche peers — not a quoted or reported figure.
Too few comparable companies in this niche to rank the valuation fairly yet.
Financing rhythm & timingmixed
Historic cadence: a new round about every 19 months.
Last raise 9.5 yr ago; this sector typically re-raises about every 15 months.
Silent for over 3× the sector's normal cadence.
The last round was 2.0× smaller than the prior — a bridge or down round.
Comparablesmixed
Capital scale ranks ahead of 89% of Biotech / Pharma peers (227 compared).
Modeled value ranks above 68% of those peers.
Closest niche peers: Akoya Biosciences, Inc., Iota Biosciences, Inc..
Peoplefiled
24 named people on file across officers, directors and signatories.
Risks & flagsmixed
Financing has been silent well beyond sector cadence — possibly defunct, acquired, or paused.
No clearly named CEO/founder/principal in the surfaced records — key-person evidence is thin.