Who invested in Watsi

2 rounds we have observed, with the 11 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.

Nonprofit

Y Combinator: W13

Funding summaryUpdated 26 Oct 2026

$4.7Mraised across 2 rounds since 2013, from 2 sources

$1.2MSeed$3.5MSeries A

Latest round: Series A, $3.5MNov 2015
Step-upi: 2.9×
Investors: 11

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.

20142015

$1.2MSeed$3.5MSeries A

First round: Seed, $1.2M
Biggest round: $3.5M
Between rounds: 2.3 years

The rounds

Nov 2015
Series A$3.5M2 new4 returning
From a historical funding record
Jul 2013
Seed$1.2M9 new
Reported by techcrunch.com

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.

Seed2013Series A2015

Y Combinator

Tengxun TouziRon ConwayPaul Graham

SV Angel

The Draper Richards Kaplan Foundation

Four Rivers Group

InnoSpringGeoff RalstonVinod Khosla

Everyone who backed them

Y CombinatorAccelerator2rounds

Tengxun TouziVC firm2rounds

Ron ConwayAngel2rounds

Paul GrahamVC firm2rounds

SV AngelVC firm1round

The Draper Richards Kaplan FoundationVC firm1round

Four Rivers GroupVC firm1round

InnoSpringVC firm1round

Geoff RalstonVC firm1round

Vinod KhoslaAngel1round

Anand AgarawalaAngel1round

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

Also claim to have backed them

These 2 firms list Watsi as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

Garry TanAngelPer its own site