United States · Funded startup

Who invested in Lygos

4 rounds we have observed, with the 7 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.

BiotechChemicals & MaterialsHealthcare

Y Combinator: W16

Funding summaryUpdated 26 Oct 2026

$35Mraised across 4 rounds since 2016, from 4 sources

$13MSeries A$16MSeries B$5.0MRound$1.8MGrant

Latest round: Grant, $1.8MJul 2024
Biggest round: $16MSeries B · Jul 2018
Investors: 7 (2 led)

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.

2018202020222024

$13MSeries A$16MSeries B$5.0MRound$1.8MGrant

First round: Series A, $13M
Biggest round: $16M
Usual gap between rounds: 19 months

The rounds

Jul 2024
Grant$1.8M4 new
Source recorded
Jan 2019
Round$5.0M1 new
- LG
Reported by FinSMEsSEC filing: $16M sold, first sale Mar 2018
Jul 2018
Series B$16M2 returning
- IA Ventures
- OS Fund
Reported by FinSMEs
Dec 2016
Series A$13M2 new
- IA VenturesLead
- OS FundLead
Reported by TechCrunchSEC filing: $13M sold, first sale Oct 2016

Founders and team

From the SEC filings it signed: 2 on the team.

Eric SteenExecutive Officer, Directori
Jeffrey DietrichExecutive Officeri

On the board, as filediBrad GillespieJay Keasling

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 A2016Series B2018Round2019Grant2024

IA VenturesL

OS FundL

Y Combinator

National Science Foundation

First Round Capital

Fifty Years

Everyone who backed them

IA VenturesVC firm2rounds, led 1

OS FundVC firm2rounds, led 1

Y CombinatorAccelerator1round

National Science FoundationGovernment1round

First Round CapitalVC firm1round

Fifty YearsVC firm1round

LGCorporate VC1round

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

Also claim to have backed them

These 3 firms list Lygos 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.