Diligence memo · auto-generated · as of July 2, 2026
Calithera Biosciences, Inc.
Calithera Biosciences, Inc. looks fair against its niche peers and is dormant on financing cadence.
Businessfiled
Calithera Biosciences, Inc. operates in Biotechnology, based in South San Francisco.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
Calithera Biosciences, Inc. has raised $67M in disclosed capital across 6 recorded rounds, aggregated from public filings. Its latest round is modeled as Series B (a $15M–$40M round).
Largest single filing: $27M on 2013-10-07.
Most recent recorded round closed around 2014-07-01.
Valuation (modeled)modeled
Provath models Calithera Biosciences, Inc. at approximately $635M (range $32M–$2.4B). This is an algorithmic estimate from round sizes and same-niche peers — not a quoted or reported figure.
Read: Fair. Modeled value is 0.89× the median modeled value of Series B Biotechnology companies in 2013–2015 (77 peers) — value vs value, same stage and era. Within the normal band (89% of peer median) for its niche.
Financing rhythm & timingmixed
Historic cadence: a new round about every 10 months.
Last raise 12.0 yr ago; this sector typically re-raises about every 14 months.
Silent for over 3× the sector's normal cadence.
The last round was 1.7× smaller than the prior — a bridge or down round.
Comparablesmixed
Capital scale ranks ahead of 86% of Biotechnology peers (4293 compared).
Modeled value ranks above 85% of those peers.
Closest niche peers: BioAtla,LLC, Scholar Rock LLC, Oligasis, LLC, Alector LLC, Gelesis Inc.
Peoplefiled
14 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.