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Companies / PsiThera

PsiThera

Watertown, MA, United States

PsiThera designs oral small molecules for disease targets using a computational platform that models protein motion

Healthcare & Biotech

PsiThera, based in Watertown, MA, United States, has 2 investors on file, among them Lightstone Ventures and Samsara BioCapital. Its latest round on record is Series A, 10 Dec 2025. Its site was last checked 12 Nov 2026: site answers.

psithera.com

Funding

1 round on record
Latest roundSeries A10 Dec 2025
Since that round11 monthsno later round on record
Investors in its rounds52 with a VCinfo profile
Dec 2025Series ALed by Samsara BioCapital, with Lightstone Ventures and 3 others

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

2 investors on file
InvestorEvidenceType
Lightstone VenturesPage + roundVenture capital
Samsara BioCapitalPage + roundVenture capital

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37 companies on its checked portfolio

Its portfolio leans to Healthcare & Biotech (95%), Industrial & Manufacturing (3%), Space & Defense (3%).

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See Lightstone Ventures' full profile · Who invests alongside it

More from Samsara BioCapital

35 companies on its checked portfolio

Its portfolio leans to Healthcare & Biotech (100%).

Alpha-9 OncologyAlpha-9 Oncology is a clinical stage radiopharmaceutical company advan…Alpheus Medical, Inc.Alpheus Medical is developing a new drug-ultrasound therapy for gliobl…AlumisAlumis Inc is focused on immune-mediated disease therapiesAmbrosia BiosciencesAmbrosia Biosciences is a drug discovery company developing orally del…Autobahn TherapeuticsAutobahn Therapeutics creates the next generation of regenerative medi…

See Samsara BioCapital's full profile · Who invests alongside it

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

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VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/psithera.com/investors

# also
GET /v1/companies/psithera.com
GET /v1/companies/psithera.com/news
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