Diligence memo · auto-generated · as of July 2, 2026
Spirox, Inc.
Spirox, Inc. looks fair against its niche peers and is dormant on financing cadence.
Businessfiled
Spirox, Inc. operates in Other Health Care, based in MENLO PARK.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
Spirox, Inc. has raised $98M in disclosed capital across 6 recorded rounds, aggregated from public filings. Its latest round is modeled as Series C (a $40M–$100M round).
Largest single filing: $45M on 2016-03-14.
Most recent recorded round closed around 2016-03-14.
Valuation (modeled)modeled
Provath models Spirox, Inc. at approximately $1.0B (range $163M–$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 0.99× the median modeled value of Series C Other Health Care companies in 2016–2018 (40 peers) — value vs value, same stage and era. Within the normal band (99% of peer median) for its niche.
Financing rhythm & timingmixed
Historic cadence: a new round about every 7 months.
Last raise 10.3 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 2.6× from the prior — scaling.
Comparablesmixed
Capital scale ranks ahead of 96% of Other Health Care peers (5377 compared).
Modeled value ranks above 97% of those peers.
Closest niche peers: Specialty Networks, LLC, New MMI Holdings, Inc., BioMatrix Holdings, L.L.C., Sea Hunter Holdings, LLC, Bind Benefits, Inc..
Peoplefiled
12 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.