SoCal.Startups is building the most comprehensive resource for Southern California's tech scene.
SoCal.Startups
Be an early user
Arialys Therapeutics, Inc. logo

Arialys Therapeutics, Inc.

La Jolla, CA · Founded 2021
LAST FUNDING
$14.8M
Seed

We explore the immense therapeutic opportunities to help those bound by autoimmune neuropsychiatric diseases.

Funding history

RoundAmount
Seed$14.8M
SEC Form D filed
Jul 1, 2025·Dec 2, 2022

About Arialys Therapeutics, Inc.

How much funding has Arialys Therapeutics, Inc. raised?

Arialys Therapeutics, Inc. has raised $14.8M in total funding. The most recent round was Seed.

Where is Arialys Therapeutics, Inc. headquartered?

Arialys Therapeutics, Inc. is headquartered in La Jolla, CA.

What does Arialys Therapeutics, Inc. do?

We explore the immense therapeutic opportunities to help those bound by autoimmune neuropsychiatric diseases.

What problem does Arialys Therapeutics, Inc. solve?

Pathogenic autoantibodies (most commonly targeting the NMDA receptor) can attack the brain and drive severe neurological and psychiatric conditions such as encephalitis, schizophrenia, dementia, stroke, and cancer-related cognitive impairment, with treatment options currently limited.

What's Arialys Therapeutics, Inc.'s solution?

Arialys is developing precision medicines, designed using structural analysis of autoantibody-NMDAR interactions, that specifically block the effect of these pathogenic autoantibodies in the brain.

What makes Arialys Therapeutics, Inc. different?

The company describes its lead candidate ART5803 as the first precision medicine designed for autoimmune neuropsychiatric disease, and reports it has received FDA Rare Pediatric Disease Designation and FDA IND clearance for a randomized Phase 2 study.

What makes Arialys Therapeutics, Inc. notable?

Arialys Therapeutics, founded by Mitsuyuki Matsumoto, raised $58M in seed financing in 2023 with backing from Johnson & Johnson's venture arm (Johnson & Johnson Innovation/JJDC) and Alexandria Venture Investments.

Leadership

Peter Flynn, Ph.D.
Executive Officer, Director
Ed Hurwitz
Director
Jay Lichter, Ph.D.
Director
Brian Slingsby, M.D., Ph.D., M.P.H.
Director
Ashish Xavier, Ph.D.
Director
Industry
Healthcare
Founded
2021
HQ
La Jolla, CA
Raised
$14.8M
Stage
Seed

Related terms

❝ Cite this page

Free to use in articles, research, and reference works. Stable URL, will not change. Data on this page last updated September 3, 2026.

MLA
"Arialys Therapeutics, Inc.: Funding & Investors." SoCal.Startups, September 3, 2026, https://socalstartups.io/companies/arialys-therapeutics-inc. Accessed September 29, 2026.
APA
SoCal.Startups. (2026). Arialys Therapeutics, Inc.: Funding & Investors. Retrieved September 29, 2026, from https://socalstartups.io/companies/arialys-therapeutics-inc
WIKIPEDIA (CITE WEB)
{{cite web |title=Arialys Therapeutics, Inc.: Funding & Investors |url=https://socalstartups.io/companies/arialys-therapeutics-inc |website=SoCal.Startups |access-date=September 29, 2026}}
🏷 Embed this badge

Building or fundraising? Add this to your site to show you're listed on SoCal.Startups — the link back helps other founders and investors find you here too.

Arialys Therapeutics, Inc. featured on SoCal.Startups
HTML
<a href="https://socalstartups.io/companies/arialys-therapeutics-inc" target="_blank" rel="noopener"><img src="https://socalstartups.io/badge.svg" width="220" height="52" alt="Arialys Therapeutics, Inc. featured on SoCal.Startups" /></a>
MARKDOWN
[![Arialys Therapeutics, Inc. featured on SoCal.Startups](https://socalstartups.io/badge.svg)](https://socalstartups.io/companies/arialys-therapeutics-inc)