Mainspring Funding II LLC is a venture capital fund based in West Palm Beach, Florida. According to its most recent Form D, filed Jul 22, 2026, it has sold $2,930,750 of interests to 13 investors since its first sale in Jul 2026. The filing does not set a minimum investment. It relies on the Section 3(c)(1) exclusion, which limits it to 100 beneficial owners, typically accredited investors. The offering uses Rule 506(b), which does not permit general solicitation. Based on its first sale date and the amount raised, AltMountain classifies it as an emerging manager. Related persons named in the filing include James Huff; Alexander Weiss; Mainspring Funding Manager LLC.
- Total raised
- $2,930,750Cumulative sales reported on Form D
- Investors
- 13
- First sale
- Jul 8, 2026
- Minimum investment
- None set
- Who can invest
- Accredited investorsSection 3(c)(1): up to 100 beneficial owners
- Offering exemption
- Rule 506(b)No general advertising
- Key people and entities
- James Huff; Alexander Weiss; Mainspring Funding Manager LLC
- Latest Form D
- Jul 22, 2026
From SEC filings, not verified. This page republishes the fund's Form D as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Returns are not part of SEC filings. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction
Questions about Mainspring Funding II LLC
What is the minimum investment for Mainspring Funding II LLC?
Mainspring Funding II LLC's latest Form D, filed Jul 22, 2026, does not set a minimum investment. Managers can still require one in the offering documents.
Who can invest in Mainspring Funding II LLC?
Mainspring Funding II LLC is generally open only to accredited investors, and it may have no more than 100 beneficial owners because it relies on Section 3(c)(1). It uses Rule 506(b), which does not allow general advertising.
How much has Mainspring Funding II LLC raised?
Mainspring Funding II LLC reports $2,930,750 sold from 13 investors on its Form D filed Jul 22, 2026. This is cumulative sales since the offering began, not current assets or performance.
Where is Mainspring Funding II LLC based?
Mainspring Funding II LLC is based in West Palm Beach, Florida.
When did Mainspring Funding II LLC launch?
Mainspring Funding II LLC reports its first sale in Jul 2026, which makes it an emerging manager by AltMountain's definition (first sale in 2021 or later and under $50 million raised).
Size compared with every venture capital fund
Raised more than 59% of the 585 venture capital funds based in Florida, and more than 76% of all 15,160 that report sales.