Diligence memo · auto-generated · as of July 3, 2026
PhotoThera Inc
PhotoThera Inc looks over-valued against its niche peers and is dormant on financing cadence.
Businessfiled
PhotoThera Inc operates in Biotechnology, based in CARLSBAD.
No verified homepage on file yet — operating evidence is limited to the public record.
Capital & rounds (filed)filed
PhotoThera Inc has raised $36M in disclosed capital across 1 recorded round, aggregated from public filings. Its latest round is modeled as Series B (a $15M–$40M round).
Largest single filing: $36M on 2009-04-27.
Most recent recorded round closed around 2009-04-27.
Valuation (modeled)modeled
Provath models PhotoThera Inc at approximately $1.4B (range $73M–$5.6B). This is an algorithmic estimate from round sizes and same-niche peers — not a quoted or reported figure.
Read: Over-valued. Modeled value is 1.63× the median modeled value of Series B Biotechnology companies in 2007–2009 (21 peers) — value vs value, same stage and era.
Financing rhythm & timingmixed
Last raise 17.2 yr ago; this sector typically re-raises about every 14 months.
Only one round on record and long silent — often defunct, acquired, or gone quiet.
Comparablesmixed
Capital scale ranks ahead of 77% of Biotechnology peers (4293 compared).
Modeled value ranks above 92% of those peers.
Closest niche peers: Ion Torrent Systems Inc, Taligen Therapeutics Inc, Atritech Inc, Barosense Inc, Palyon Medical Corp.
Peoplefiled
8 named people on file across officers, directors and signatories.
Risks & flagsmixed
Financing has been silent well beyond sector cadence — possibly defunct, acquired, or paused.
Modeled above niche peers — valuation risk on entry.
No clearly named CEO/founder/principal in the surfaced records — key-person evidence is thin.