Who invested in ZwitterCo

2 rounds we have observed, with the 5 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.

Climate TechManufacturingWater

Raised this month

Funding summaryUpdated 26 Oct 2026

$58Mraised across 2 rounds since 2024, from 3 sources

Latest round: RoundOct 2026
Biggest round: $58MSeries B · Jul 2024
Investors: 5

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.

20252026

$58MSeries B?Round

First round: Series B, $58M
Biggest round: $58M
Between rounds: 2.3 years

The rounds

Oct 2026
RoundAmount undisclosed1 new
- Ecolab
Reported by PR Newswire: financing agreements and 1 other
Jul 2024
Series B$58M4 new
Source recorded

Founders and team

From the SEC filings it signed: 3 on the team.

Alex RappaportExecutive Officer, Directori
Christopher DroverExecutive Officeri
Greg Earl FisichelliExecutive Officeri

On the board, as filediH. Earl JonesJason PontinSteve Remondi

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 B2024Round2026

National Science Foundation

Everyone who backed them

National Science FoundationGovernment1round

DCVCVC firm1round

MassVenturesVC firm1round

Munich Re VenturesCorporate VC1round

EcolabCorporate VC1round

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

Also claim to have backed them

These 5 firms list ZwitterCo 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.