United States · Series B startup

Who invested in Cylinder

One round we have observed, with the 2 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Healthcare

Funding summaryUpdated 26 Oct 2026

$31Mraised across 1 round since 2023, from 1 source

Latest round
Series B, $31MSept 2023
Investors
2
See who backed them

The rounds

  1. Sept 2023
    Series B$31M

    Source recorded

Everyone who backed them

Human CapitalGrowth equity1round

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Also claim to have backed them

This firm lists Cylinder 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.

SemperVirens Venture CapitalVC firmPer its own site

Quick answers about Cylinder

Who invested in Cylinder?

Cylinder's investors include Human Capital and FCA Venture Partners.

How much has Cylinder raised?

Cylinder has raised $31M across 1 round since 2023.

When did Cylinder last raise?

Cylinder's most recent round was a Series B of $31M in Sept 2023.

What was Cylinder's biggest round?

Its most recent round, $31M in Sept 2023, is also its largest on record.

Who backed Cylinder first?

Cylinder's first round on record, in Sept 2023, was backed by Human Capital and FCA Venture Partners.

What stage is Cylinder at?

Cylinder's latest named round is a Series B, in Sept 2023.

Where is Cylinder based?

Cylinder is based in the United States.

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In the same sector, and raised in the last eighteen months.

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