Spiral Therapeutics

South San Francisco, CA · Founded 2016 · Privately Held (backing)

Developer of drug therapies designed to treat inner ear disorders. Spiral Therapeutics is based in South San Francisco, CA and was founded in 2016. It was valued at $52 million at its later-stage round in Apr 2026, the last priced event on record. It has raised $51.2 million across 3 recorded rounds; the latest was a $27.1 million early-stage round in Sep 2025.

PMV mark · valuation
$52.0M
Oct 2026
Priced at
its later-stage round
Apr 2026
Total raised
$51.2M
Last round
Early Stage VC
Sep 2025
How much has Spiral Therapeutics raised?
$51.2Macross 3 recorded rounds · Dec 2018 – Sep 2025

Most recently, Spiral Therapeutics raised $27.1M in its Early Stage VC (Sep 2025).

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Spiral Therapeutics round by round

3 rounds
Sep 2025Early Stage VC$27.1MSEC filing▮
34 investors participated
Oct 2022Early Stage VC$10.9MSEC filing▮
48 investors participated
Dec 2018Early Stage VC$8.5MSEC filing▮
38 investors participated

How much has Spiral Therapeutics raised?

Spiral Therapeutics has raised $51.2 million across 3 recorded rounds since 2018. The largest was an $8.5 million early-stage round in Dec 2018; the most recent was a $27.1 million early-stage round in Sep 2025.

Spiral Therapeutics has filed 4 Form Ds with the SEC since 2018, most recently in Apr 2026 ($27.1 million sold to 34 investors).

Spiral Therapeutics investors

14 investors are on record for Spiral Therapeutics, including StartX (US), Catalio Capital Management, Inveready Asset Management and Wille Finance. By type, the record holds 2 venture capital firms, 2 family offices and 1 angel investor. The early-stage round in Sep 2025 drew 34 investors.

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Frequently asked about Spiral Therapeutics

How much has Spiral Therapeutics raised?
Spiral Therapeutics has raised $51.2M in total across 3 recorded funding rounds.
When was Spiral Therapeutics's last funding round?
Spiral Therapeutics's most recent recorded round was Early Stage VC in Sep 2025, raising $27.1M.