Weisenborn Microstructure Fund I LP is a hedge fund based in Aguirre, Puerto Rico. According to its most recent Form D, filed Mar 12, 2026, the fund has sold $500,000 of interests to 2 investors since its first sale in Sep 2022. The minimum investment it accepts from an outside investor is $100,000. It relies on the Section 3(c)(1) exclusion, which limits it to 100 beneficial owners, typically accredited investors. The offering uses Rule 506(c), which permits general advertising to investors verified as accredited. Based on its first sale date and the amount raised, HedgeMountain classifies it as an emerging manager. Related persons named in the filing include Mark Weisenborn.
Performance
No verified returns have been reported for this fund. Hedge fund returns are not part of SEC filings; managers report them to HedgeMountain directly.
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- Total raised
- $500,000Cumulative sales reported on Form D
- Investors
- 2
- First sale
- Sep 1, 2022
- Minimum investment
- $100,000
- Who can invest
- Accredited investorsSection 3(c)(1): up to 100 beneficial owners
- Offering exemption
- Rule 506(c)May advertise; investors must be verified as accredited
- Key people and entities
- Mark Weisenborn
- Latest Form D
- Mar 12, 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 HedgeMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures
Size compared with every hedge fund
Raised more than 21% of the 38 hedge funds based in Puerto Rico, and more than 3% of all 10,157 that report sales.