AltMountain

Altarock Fund LP

West Palm Beach, FL · CIK 1172921 · Managed by Altarock Partners LP

Altarock Fund LP is a hedge fund based in West Palm Beach, Florida. According to its most recent Form D, filed Jan 9, 2026, the fund has sold $1,282,618,369 of interests to 121 investors since its first sale in Apr 2002. The minimum investment it accepts from an outside investor is $5,000,000. It relies on the Section 3(c)(1) exclusion, which limits it to 100 beneficial owners, typically accredited investors. The offering uses Rule 506(b), which does not permit general solicitation. Related persons named in the filing include Mark Massey; AltaRock GP, LLC; Shannon Cabot.

Performance

No verified returns have been reported for this fund. Hedge fund returns are not part of SEC filings; managers report them to AltMountain directly.

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Total raised
$1,282,618,369Cumulative sales reported on Form D
Investors
121
First sale
Apr 1, 2002
Minimum investment
$5,000,000
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
Mark Massey; AltaRock GP, LLC; Shannon Cabot
Latest Form D
Jan 9, 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. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction

Questions about Altarock Fund LP

What is the minimum investment for Altarock Fund LP?

According to its latest Form D, filed Jan 9, 2026, the minimum investment Altarock Fund LP accepts from an outside investor is $5,000,000.

Who can invest in Altarock Fund LP?

Altarock Fund LP 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 Altarock Fund LP raised?

Altarock Fund LP reports $1,282,618,369 sold from 121 investors on its Form D filed Jan 9, 2026. This is cumulative sales since the offering began, not current assets or performance.

Where is Altarock Fund LP based?

Altarock Fund LP is based in West Palm Beach, Florida and is managed by Altarock Partners LP.

When did Altarock Fund LP launch?

Altarock Fund LP reports its first sale in Apr 2002.

Size compared with every hedge fund

Raised more than 97% of the 750 hedge funds based in Florida, and more than 92% of all 10,308 that report sales.

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