Who invested in SewerAI

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.

AIConstruction

Raised 5 months ago

Funding summaryUpdated 26 Oct 2026

$15Mraised across 2 rounds since 2024, from 3 sources

Latest round: GrowthJun 2026
Led by: JMI Equity
Biggest round: $15MSeries B · Jun 2024
Investors: 5 (1 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.

20252026

$15MSeries B?Growth

First round: Series B, $15M
Biggest round: $15M
Between rounds: 2 years

The rounds

Jun 2026
GrowthAmount undisclosed3 new2 returning
Reported by Suffolk Technologies and 1 other
Jun 2024
Series B$15M2 new
- Epic Ventures
- Builders VC
Source recorded

Founders and team

From SewerAI's own website: 2 founders, 3 on the team.

Billy GilmartinCo-CEO & Co-Founder

Matt RosenthalCo-CEO & Co-Founder

Matthew SzymanskiHead of Finance
Sepehr SobhaniVP of Engineering
Charles CoaxumBoard & Advisors

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 B2024Growth2026

Everyone who backed them

Epic VenturesVC firm2rounds

Builders VCVC firm2rounds

JMI EquityPrivate equity1round, led 1

Bentley SystemsCorporate VC1round

Innovius CapitalPrivate equity1round

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

Also claim to have backed them

This firm lists SewerAI 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.