Filed before 2025Latest filing 6 July 2021

Mainspring Energy, Inc.

Mainspring Energy, Inc. is a Menlo Park, CA company with 2 venture-backed raises in public filings, $191M sold in all. The latest was filed on 6 July 2021.

Raises filed before 2025 are not checked for a public announcement.

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Raises

Equity round$108MFiled before 20256 Jul 2021 · Menlo Park, CA
Equity round (amended)$83.3MFiled before 202525 Jan 2018 · Menlo Park, CA

Investors on the board

Khosla Ventures
ClearSky Power & Technology
ClearSky Security
Green Nonce Capital

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