Who invested in Atara Biotherapeutics

4 rounds we have observed, with the 9 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 6 months ago

Funding summaryUpdated 26 Oct 2026

$69Mraised across 4 rounds since 2013, from 4 sources

$39MSeries B$14MSeries B$16MRound$550KRound

Latest round: Round, $550KMay 2026
Biggest round: $39MSeries B · Dec 2013
Investors: 9

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.

201520172019202120232025

$39MSeries B$14MSeries B$16MRound$550KRound

First round: Series B, $39M
Biggest round: $39M
Usual gap between rounds: 11.3 years

The rounds

May 2026
Round$550K2 returning
- Kleiner Perkins
- Redmile Group
Source recorded
May 2025
Round$16M2 new
- Kleiner Perkins
- Redmile Group
Source recorded
Jan 2014
Series B$14M1 new6 returning
From a historical funding record
Dec 2013
Series B$39M6 new
From a historical funding record

Founders and team

From Atara Biotherapeutics's own website: 8 on the team.

Jim SesicSenior Vice President, Regulatory Affairs
Kevin SarneyInterim Chief Financial Officer
Brian CherryDirector
Gregory A. CiongoliChairman of the Board
James HuangDirector
Matthew FustDirector, Audit Committee Chair
Nachi SubramanianDirector
William HeidenDirector, Compensation Chair

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.

Series B2013Series B2014Round2025Round2026

Kleiner Perkins Caufield & Byers

EcoR1 CapitalAmgen Ventures

Alexandria Real Estate Equities

Everyone who backed them

Kleiner Perkins Caufield & ByersVC firm2rounds

Kleiner PerkinsVC firm2rounds

DAG VenturesVC firm2rounds

Domain AssociatesVC firm2rounds

Redmile GroupVC firm2rounds

CelgeneGrowth equity2rounds

EcoR1 CapitalPrivate equity2rounds

Amgen VenturesGrowth equity2rounds

Alexandria Real Estate EquitiesVC firm1round

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

Quick answers about Atara Biotherapeutics

Who invested in Atara Biotherapeutics?

Atara Biotherapeutics's investors include Kleiner Perkins Caufield & Byers, Kleiner Perkins, DAG Ventures, Domain Associates and Redmile Group, and 4 more on record.

How much has Atara Biotherapeutics raised?

Atara Biotherapeutics has raised $69M across 4 rounds since 2013.

When did Atara Biotherapeutics last raise?

Atara Biotherapeutics's most recent round was an Undisclosed round of $550K in May 2026.

What was Atara Biotherapeutics's biggest round?

Atara Biotherapeutics's largest round on record is $39M (Series B), in Dec 2013.

Who backed Atara Biotherapeutics first?

Atara Biotherapeutics's first round on record, in Dec 2013, was backed by Kleiner Perkins Caufield & Byers, DAG Ventures and Domain Associates and 3 others.