Diligence memo · auto-generated · as of July 2, 2026
Protagonist Therapeutics Inc
Protagonist Therapeutics Inc looks fair against its niche peers and is dormant on financing cadence.
Businessfiled
Protagonist Therapeutics Inc operates in Biotechnology, based in MENLO PARK.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
Protagonist Therapeutics Inc has raised $24M in disclosed capital across 2 recorded rounds, aggregated from public filings. Its latest round is modeled as Series B (a $15M–$40M round).
Largest single filing: $17M on 2015-07-10.
Most recent recorded round closed around 2015-07-10.
Valuation (modeled)modeled
Provath models Protagonist Therapeutics Inc at approximately $695M (range $35M–$2.7B). This is an algorithmic estimate from round sizes and same-niche peers — not a quoted or reported figure.
Read: Fair. Modeled value is 0.97× 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 (97% of peer median) for its niche.
Financing rhythm & timingmixed
Historic cadence: a new round about every 26 months.
Last raise 11.0 yr ago; this sector typically re-raises about every 14 months.
Silent for over 3× the sector's normal cadence.
The last round stepped up 2.5× from the prior — scaling.
Comparablesmixed
Capital scale ranks ahead of 71% of Biotechnology peers (4293 compared).
Modeled value ranks above 86% of those peers.
Closest niche peers: BioAtla,LLC, Scholar Rock LLC, Oligasis, LLC, Alector LLC, Gelesis Inc.
Peoplefiled
11 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.