Affinia Therapeutics

Waltham, MA · Founded 2019 · Privately Held (backing)

Developer of an adeno-associated virus gene therapy platform intended to focus on diseases affecting the central nervous system and muscles. Affinia Therapeutics is based in Waltham, MA and was founded in 2019. It was valued at $145 million at its later-stage round in Oct 2025, the last priced event on record. It has raised $210 million across 3 recorded rounds; the latest was a $13.3 million early-stage round in Sep 2025.

PMV mark · valuation
$145.0M
Oct 2026
Priced at
its later-stage round
Oct 2025
Total raised
$210.0M
Last round
Early Stage VC
Sep 2025
How much has Affinia Therapeutics raised?
$210.0Macross 3 recorded rounds · Mar 2020 – Sep 2025

Most recently, Affinia Therapeutics raised $13.3M in its Early Stage VC (Sep 2025).

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Affinia Therapeutics round by round

3 rounds
Sep 2025Early Stage VC$13.3MSEC filing▮
20 investors participated
Apr 2021Later Stage VC$110.0MSEC filing▮
22 investors participated
Mar 2020Early Stage VC$38.5MSEC filing▮
16 investors participated

How much has Affinia Therapeutics raised?

Affinia Therapeutics has raised $210 million across 3 recorded rounds since 2020. The largest was a $38.5 million early-stage round in Mar 2020; the most recent was a $13.3 million early-stage round in Sep 2025.

Affinia Therapeutics has filed 2 Form Ds with the SEC since 2020, most recently in May 2021 ($110 million sold to 22 investors).

Affinia Therapeutics investors

19 investors are on record for Affinia Therapeutics, including RA Capital Management, GV, Service Provider Capital and New Enterprise Associates. By type, the record holds 5 venture capital firms, 5 hedge funds and 3 asset managers. The early-stage round in Sep 2025 drew 20 investors.

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Frequently asked about Affinia Therapeutics

How much has Affinia Therapeutics raised?
Affinia Therapeutics has raised $210.0M in total across 3 recorded funding rounds.
When was Affinia Therapeutics's last funding round?
Affinia Therapeutics's most recent recorded round was Early Stage VC in Sep 2025, raising $13.3M.