AltMountain

Proteus Master Fund III, LLC

Indianapolis, IN · CIK 1816191

Proteus Master Fund III, LLC is a private investment fund based in Indianapolis, Indiana. According to its most recent Form D, filed May 21, 2026, it has sold $32,792,416 of interests to 4 investors since its first sale in Apr 2020. 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 Molly Herendeen; Anya Janeway; Eric Knauss.

Total raised
$32,792,416Cumulative sales reported on Form D
Investors
4
First sale
Apr 1, 2020
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
Molly Herendeen; Anya Janeway; Eric Knauss
Latest Form D
May 21, 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

$32,792,416Jun 26, 2020: $500,000 raisedAug 25, 2021: $21,271,866 raisedAug 22, 2022: $26,044,694 raisedOct 16, 2023: $25,835,954 raisedOct 10, 2024: $30,892,416 raisedOct 8, 2025: $23,750,375 raisedNov 13, 2025: $23,750,375 raisedMay 21, 2026: $32,792,416 raisedJun 2020May 2026
FiledFilingTotal raisedInvestorsSource
May 21, 2026Amendment$32,792,4164SEC.gov ↗
Nov 13, 2025Amendment$23,750,3754SEC.gov ↗
Oct 8, 2025Amendment$23,750,3754SEC.gov ↗
Oct 10, 2024Amendment$30,892,4163SEC.gov ↗
Oct 16, 2023First notice$25,835,9543SEC.gov ↗
Aug 22, 2022First notice$26,044,6942SEC.gov ↗
Aug 25, 2021Amendment$21,271,8662SEC.gov ↗
Jun 26, 2020First notice$500,0001SEC.gov ↗

8 Form D filings in the SEC's electronic records (2008 onward), the earliest on Jun 26, 2020. 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. Source: U.S. Securities and Exchange Commission, Form D data sets.

Questions about Proteus Master Fund III, LLC

What is the minimum investment for Proteus Master Fund III, LLC?

Proteus Master Fund III, LLC's latest Form D, filed May 21, 2026, does not set a minimum investment. Managers can still require one in the offering documents.

Who can invest in Proteus Master Fund III, LLC?

Proteus Master Fund III, 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 III, LLC raised?

Proteus Master Fund III, LLC reports $32,792,416 sold from 4 investors on its Form D filed May 21, 2026. This is cumulative sales since the offering began, not current assets or performance.

Where is Proteus Master Fund III, LLC based?

Proteus Master Fund III, LLC is based in Indianapolis, Indiana.

When did Proteus Master Fund III, LLC launch?

Proteus Master Fund III, LLC reports its first sale in Apr 2020.

Size compared with every private investment fund

Raised more than 77% of the 69 private investment funds based in Indiana, and more than 57% of all 10,333 that report sales.

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