UnannouncedVCRaise

Unannounced · 1 dayFiled 18 September 2026

Femtosense, Inc. raised $21.6M

Femtosense, Inc., a company based in San Bruno, CA, raised $21.6M in a new equity round, according to a filing dated 18 September 2026.

No public announcement found as of 19 September 2026, 1 day after the filing.

Watch Femtosense, Inc. Share on X Read the filing ↗
Filed
18 September 2026
Round
Equity round
Amount sold
$21.6M
Offering size
$22.3M
Investors so far
22
Based in
San Bruno, CA
Website
femto.ai

Investors on the board

Firms come from the venture funds whose filings name a director of this company.

Who is on the board

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How it compares

Larger than 72% of the 864 tracked raises with an amount filed in 2026.

Femtosense, Inc. in public filings

FiledFilingSoldRaise
18 Sep 2026New filing$21.6MThis raise
26 Nov 2024New filing$4.26MAnother raise
11 Sep 2018New filing$1.12MAnother raise

Everything on Femtosense, Inc.

More with Green Nonce Capital on the board

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  2. Mainspring Energy, Inc.$108MFiled before 20256 Jul 2021 · Menlo Park, CA

All 6 raises

Other unannounced rounds

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  5. Lumoptik, Inc.$1.54MUnannounced · 1 day18 Sep 2026 · Washington Island, WI
  6. XN Companies Inc.$30.5MUnannounced · 1 day18 Sep 2026 · New York, NY

All unannounced rounds

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