United States · Series A startup

Who invested in Linear Labs

3 rounds we have observed, with the 12 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.

Hardware & ElectronicsManufacturing

Funding summaryUpdated 26 Oct 2026

$22Mraised across 3 rounds since 2014, from 3 sources

$150KRound$4.5MSeed$17MSeries A
Latest round
Series A, $17MMar 2022
Step-upi
3.8×
Investors
12 (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.

20142016201820202022
$150KRound$4.5MSeed$17MSeries A
First round
Round, $150K
Feb 2014
Biggest round
$17M
Series A · Mar 2022
Usual gap between rounds
5.1 years
the median of 2

The rounds

  1. Mar 2022
  2. Mar 2019
    Seed$4.5M8 new

    Reported by FinSMEs

  3. Feb 2014
    Round$150K

    No investor was named in the report.

    From a historical funding record

Founders and team

From Linear Labs's own website: 2 founders, 1 on the team.

Brad HunstableCEO & Co-Founder
Fred HunstableCTO & Co-Founder
  • Erik HatchVP Engineering

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.

Round2014Seed2019Series A2022Kindred VenturesLScienceLAlumni VenturesCapital FactoryLowercarbon CapitalKarman VenturesChrisChris MacFarlandCrystal SaccaGyula Feher

Everyone who backed them

Kindred VenturesVC firm2rounds, led 1
ScienceVC firm1round, led 1
Alumni VenturesVC firm1round
Capital FactoryVC firm1round
Lowercarbon CapitalVC firm1round
Karman VenturesVC firm1round
Chrisno record of our own yet1round
Chris MacFarlandno record of our own yet1round
Crystal Saccano record of our own yet1round
Gyula Feherno record of our own yet1round
Russ Fradinno record of our own yet1round
Ryan Gravesno record of our own yet1round

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

Also claim to have backed them

These 4 firms list Linear Labs 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.

Duke Capital PartnersVC firmPer its own site
Deliberate VenturesVC firmPer its own site
Head and Heart CapitalAngel networkPer its own site
Oktogon VenturesVC firmPer its own site

Quick answers about Linear Labs

Who invested in Linear Labs?

Linear Labs's investors include Kindred Ventures, Science, Alumni Ventures, Capital Factory and Lowercarbon Capital, and 7 more on record.

How much has Linear Labs raised?

Linear Labs has raised $22M across 3 rounds since 2014.

When did Linear Labs last raise?

Linear Labs's most recent round was a Series A of $17M in Mar 2022.

What was Linear Labs's biggest round?

Its most recent round, $17M in Mar 2022, is also its largest on record.

Who backed Linear Labs first?

Linear Labs's first round on record, in Mar 2019, was backed by Kindred Ventures, Science and Chris and 5 others.

What stage is Linear Labs at?

Linear Labs's latest named round is a Series A, in Mar 2022.

Where is Linear Labs based?

Linear Labs is based in the United States.

Who led Linear Labs's rounds?

Kindred Ventures led the Seed in 2019.

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