Proteus Master Fund I, LLC
Proteus Master Fund I, LLC is a private investment fund based in Indianapolis, Indiana. According to its most recent Form D, filed May 20, 2026, it has sold $32,715,693 of interests to 7 investors since its first sale in Oct 2014. The filing does not set a minimum investment. It relies on the Section 3(c)(7) exclusion, so investors generally must be qualified purchasers. The offering uses Rule 506(b), which does not permit general solicitation. Related persons named in the filing include Ryan Laughon; Eric Knauss; Anya Janeway.
- Total raised
- $32,715,693Cumulative sales reported on Form D
- Investors
- 7
- First sale
- Oct 27, 2014
- Minimum investment
- None set
- Who can invest
- Qualified purchasersSection 3(c)(7): generally $5M+ in investments
- Offering exemption
- Rule 506(b)No general advertising
- Key people and entities
- Ryan Laughon; Eric Knauss; Anya Janeway
- Latest Form D
- May 20, 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
Raise history
| Filed | Filing | Total raised | Investors | Source |
|---|---|---|---|---|
| May 20, 2026 | Form D/A (amendment) | $32,715,693 | 7 | SEC.gov ↗ |
| Nov 12, 2025 | Form D/A (amendment) | $25,330,591 | 6 | SEC.gov ↗ |
| Oct 8, 2025 | Form D/A (amendment) | $22,680,591 | 6 | SEC.gov ↗ |
| Oct 9, 2024 | Form D/A (amendment) | $18,419,591 | 4 | SEC.gov ↗ |
| Oct 16, 2023 | Form D | $17,874,834 | 4 | SEC.gov ↗ |
| Aug 22, 2022 | Form D/A (amendment) | $10,202,133 | 3 | SEC.gov ↗ |
| Aug 25, 2021 | Form D/A (amendment) | $3,163,346 | 5 | SEC.gov ↗ |
| Aug 24, 2020 | Form D/A (amendment) | $3,163,346 | 3 | SEC.gov ↗ |
| Aug 21, 2019 | Form D/A (amendment) | $2,863,346 | 1 | SEC.gov ↗ |
| Aug 21, 2018 | Form D/A (amendment) | $362,679 | 1 | SEC.gov ↗ |
| Apr 20, 2017 | Form D/A (amendment) | $362,707 | 1 | SEC.gov ↗ |
| Apr 21, 2016 | Form D/A (amendment) | $352,707 | 1 | SEC.gov ↗ |
15 Form D filings in the SEC's electronic records (2008 onward), the earliest on Apr 23, 2014. Each filing reports the cumulative amount sold and the number of investors to that date, as the fund filed it. Not verified, and not the fund's current assets. Showing the latest 12 of 15 filings; the rest are on SEC.gov. Source: U.S. Securities and Exchange Commission, Form D data sets.
Related vehicles with the same name (2)
| Vehicle | Total raised | Investors | Latest Form D |
|---|---|---|---|
| Proteus Master Fund I, LLC (this page) | $32,715,693 | 7 | May 20, 2026 |
| Proteus Feeder Fund I, LLC | $27,772,749 | 75 | May 15, 2026 |
Funds are often offered through several legal vehicles, such as onshore, offshore, feeder, parallel or tax-exempt versions, and each one files its own Form D. These 2 filings share this fund's name apart from such vehicle words or a series letter, which usually means they are versions of one fund. Grouped by AltMountain from the names on the filings alone, so the list may be incomplete or include a separate fund with a near-identical name; amounts are each vehicle's own filing and should not be added together, because a feeder's money can also be counted in its master fund. Source: SEC Form D filings.
Questions about Proteus Master Fund I, LLC
What is the minimum investment for Proteus Master Fund I, LLC?
Proteus Master Fund I, LLC's latest Form D, filed May 20, 2026, does not set a minimum investment. Managers can still require one in the offering documents.
Who can invest in Proteus Master Fund I, LLC?
Proteus Master Fund I, LLC is generally open only to qualified purchasers (generally individuals with at least $5 million in investments), because it relies on Section 3(c)(7). It uses Rule 506(b), which does not allow general advertising.
How much has Proteus Master Fund I, LLC raised?
Proteus Master Fund I, LLC reports $32,715,693 sold from 7 investors on its Form D filed May 20, 2026. This is cumulative sales since the offering began, not current assets or performance.
Where is Proteus Master Fund I, LLC based?
Proteus Master Fund I, LLC is based in Indianapolis, Indiana.
When did Proteus Master Fund I, LLC launch?
Proteus Master Fund I, LLC reports its first sale in Oct 2014.
Size compared with every private investment fund
Raised more than 75% of the 69 private investment funds based in Indiana, and more than 57% of all 10,333 that report sales.
Other funds with the same team
- Concurrent Private Markets Opportunities Fund, LLC$67.4M
- Proteus Series Feeder Fund III, LLC - Cynosure Partners Access Vehicle$57.5M
- Proteus Series Feeder Fund I, LLC - Tabeguache Fund$57.1M
- Proteus Feeder I Offshore SPC Ltd. - Yampa Segregated Portfolio$54.1M
- Proteus Master Fund II, LLC$53.7M
- Proteus Feeder I Offshore SPC Ltd. - Segregated Portfolio 1A$42.6M
- Proteus Series Feeder Fund IV, LLC - Growth Fund I$38.3M
- Proteus Series Feeder Fund I, LLC - Shavano Fund$36.9M