Mainspring Funding LLC
ClearSky · adviser of record: Clearsky Advisors LLC · 2022 vintage
Mainspring Funding LLC is a 2022 venture fund managed by ClearSky, with $6.8mm raised (Form D, amount sold). It reported $4.5mm in gross assets at year-end 2025, 0.66x its size, against a peak of $7.8mm in 2022.
- Latest value held
- $4.5mm year-end 2025
- Peak
- $7.8mm year-end 2022
- Fund size
- $6.8mm Form D, amount sold
- Held vs. size
- 0.66x peak 1.14x
Value held by year-end
Gross asset value reported on Form ADV at each year-end. Dashed line: fund size. Open in the Fund Tracker
| Year-end | Gross assets | ÷ size | Change |
|---|---|---|---|
| 2025 | $4.5mm | 0.66x | -42% over 2 yrs |
| 2023 | $7.7mm | 1.13x | -0% |
| 2022 | $7.8mm | 1.14x | – |
Other funds from ClearSky
- Clearsky Power & Technology Fund II LLC 2018
- Clearsky Security Fund I LLC 2016
- Clearsky Power & Technology Fund I LLC 2011
About these numbers
Gross asset value is what the manager reports holding in the fund at each fiscal year-end, on SEC Form ADV, Schedule D. It includes the GP’s own commitment and is before carried interest, so it is not the LPs’ net return, and it does not show cash already distributed. A fall in value can mean distributions, markdowns or both. Fund size is the amount sold reported on Form D, which for some funds reflects only a first close. Private fund ID 805-8598599647. Data updated October 13, 2026.
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