Who invested in Exum Instruments

3 rounds we have observed, with the 3 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.

Software

Raised 4 months ago

Funding summaryUpdated 26 Oct 2026

$4.6Mraised across 3 rounds since 2025, from 3 sources

$1.1MVenture$120KRound$3.4MVenture

Latest round: Venture, $3.4MJul 2026
Step-upi: 28.3×
Investors: 3

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.

2026

$1.1MVenture$120KRound$3.4MVenture

First round: Venture, $1.1M
Biggest round: $3.4M
Usual gap between rounds: 9 months

The rounds

Jul 2026
Venture$3.4M2 returning
- Advantage Capital
- Cortado Ventures
Source recordedSEC filing: $3.4M sold
Dec 2025
Round$120K
No investor was named in the report.
Filed with the SEC (Form D); no report of this raise yetSEC filing: $120K sold, first sale Dec 2025
Apr 2025
Venture$1.1M3 new
Source recordedSEC filing: $1.1M sold, first sale Apr 2025

Founders and team

From Exum Instruments's own website: 7 on the team.

Jeffrey WilliamsCEO/CTO
Mike MinyardCFO
Ellen WilliamsSenior VP of Business Development
Chris FabereDirector of Manufacturing
Cole NaymarkDirector of Engineering
Jonathan PutmanDirector of Applications
Oleg MaltsevDirector of Software Engineering and Integration

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.

Venture2025Round2025Venture2026

Advantage Capital

Cortado Ventures

MassChallenge

Everyone who backed them

Advantage CapitalCorporate VC2rounds

Cortado VenturesVC firm2rounds

MassChallengeAccelerator1round

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

Also claim to have backed them

These 4 firms list Exum Instruments 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.