Diligence memo · auto-generated · as of July 2, 2026
NantBio, Inc.
NantBio, Inc. looks over-valued against its niche peers and is at-risk on financing cadence.
Businessfiled
NantBio, Inc. operates in Biotechnology, based in El Segundo.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
NantBio, Inc. has raised $180M in disclosed capital across 5 recorded rounds, aggregated from public filings. Its latest round is modeled as Series C (a $40M–$100M round).
Largest single filing: $100M on 2015-04-29.
Most recent recorded round closed around 2023-11-08.
Valuation (modeled)modeled
Provath models NantBio, Inc. at approximately $857M (range $232M–$1.4B). This is an algorithmic estimate from round sizes and same-niche peers — not a quoted or reported figure.
Read: Over-valued. Modeled value is 1.73× the median modeled value of Series C Biotechnology companies in 2022–2024 (111 peers) — value vs value, same stage and era.
Financing rhythm & timingmixed
Historic cadence: a new round about every 24 months.
Last raise 2.6 yr ago; this sector typically re-raises about every 14 months.
Past due for a raise versus sector cadence — watch for distress or a bridge.
The last round stepped up 7.5× from the prior — scaling.
Comparablesmixed
Capital scale ranks ahead of 96% of Biotechnology peers (4293 compared).
Modeled value ranks above 88% of those peers.
Closest niche peers: Dianthus Therapeutics, Inc., Satellite Biosciences, Inc., Deepcell, Inc., Ventus Therapeutics U.S., Inc., Morphic Holding, Inc..
Peoplefiled
5 named people on file across officers, directors and signatories.
Risks & flagsmixed
Overdue for a raise versus sector norm — distress or bridge risk.
Modeled above niche peers — valuation risk on entry.
No clearly named CEO/founder/principal in the surfaced records — key-person evidence is thin.