United States · Venture startup

Who invested in SirenOpt

One round we have observed, with the 3 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.

Chemicals & Materials

Raised 2 months ago

Funding summaryUpdated 26 Oct 2026

$19Mraised across 1 round since 2026, from 1 source

Latest round
Venture, $19MSept 2026
Investors
3
See who backed them

The rounds

  1. Sept 2026
    Venture$19M

    Source recordedSEC filing: $19M sold

Founders and team

From SirenOpt's own website: 3 founders, 7 on the team.

Jared O'LearyCEO & Co-Founder
Jonathan TanCEO and co-founder at Coreshell
Ali MesbahSirenOpt Co-founder & CTO
  • Nir BenMosheChief Commercial Officer
  • Steven KayeCTO at Voya Energy
  • Connor HundHead of Operations and Finance
  • James CarringtonVP Sales and Marketing
  • Parnika AgrawalHead of Product
  • Matthew BlainBoard Director
  • Phil HarperBoard Director

AdvisersKenzo Nagai

Everyone who backed them

Berkeley SkyDeckAccelerator1round
Hitachi VenturesCorporate VC1round
Voyager VenturesVC firm1round

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

Also claim to have backed them

These 5 firms list SirenOpt 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.

Wireframe VenturesVC firmPer its own site
Visionaries TomorrowVC firmPer its own site
MTM Venture PartnersVC firmPer its own site
Resilient Systems CapitalInvestment firmPer its own site
Union LabsVC firmPer its own site

Quick answers about SirenOpt

Who invested in SirenOpt?

SirenOpt's investors include Berkeley SkyDeck, Hitachi Ventures and Voyager Ventures.

How much has SirenOpt raised?

SirenOpt has raised $19M across 1 round since 2026.

When did SirenOpt last raise?

SirenOpt's most recent round was a Venture of $19M in Sept 2026.

What was SirenOpt's biggest round?

Its most recent round, $19M in Sept 2026, is also its largest on record.

Who backed SirenOpt first?

SirenOpt's first round on record, in Sept 2026, was backed by Berkeley SkyDeck, Hitachi Ventures and Voyager Ventures.

What stage is SirenOpt at?

SirenOpt's latest named round is a Venture, in Sept 2026.

Where is SirenOpt based?

SirenOpt is based in the United States.

Companies like SirenOpt

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

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