Who invested in Atavistik Bio

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech

Raised 8 months ago

Funding summaryUpdated 26 Oct 2026

$80Mraised across 2 rounds since 2023, from 2 sources

$40MVenture$40MSeries B

Latest round: Series B, $40MMar 2026
Investors: 2

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

202420252026

$40MVenture$40MSeries B

First round: Venture, $40M
Biggest round: $40M
Between rounds: 2.3 years

The rounds

Mar 2026
Series B$40M1 new1 returning
- Lux Capital
- RA Capital Management
Source recorded
Dec 2023
Venture$40M1 new
- Lux Capital
Source recorded

Founders and team

From Atavistik Bio's own website: 1 founder, 7 on the team.

Avenzo TherapeuticsFounder

Bryan E. StuartChief Executive Officer
Nazareth Martinez SheddenVice President, Finance
Lindsay DuhaimeTeam
Lori SteelmanTeam
Nextech InvestTeam
Patrick McnamaraTeam
Regulatory AffairsTeam

AdvisersHabib Dable

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Venture2023Series B2026

Lux Capital

RA Capital Management

Everyone who backed them

Lux CapitalVC firm2rounds

RA Capital ManagementPrivate equity1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Atavistik Bio as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.