AltMountain

ARB Flagship Multi-Strategy Series

Chicago, IL · CIK 2017381
Emerging

ARB Flagship Multi-Strategy Series is a hedge fund based in Chicago, Illinois. According to its most recent Form D, filed Jun 1, 2026, the fund has sold $31,871,421 of interests to 25 investors since its first sale in Apr 2024. The minimum investment it accepts from an outside investor is $250,000. 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. Based on its first sale date and the amount raised, AltMountain classifies it as an emerging manager. Related persons named in the filing include John Klimek.

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
$31,871,421Cumulative sales reported on Form D
Investors
25
First sale
Apr 8, 2024
Minimum investment
$250,000
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
John Klimek
Latest Form D
Jun 1, 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 ARB Flagship Multi-Strategy Series

What is the minimum investment for ARB Flagship Multi-Strategy Series?

According to its latest Form D, filed Jun 1, 2026, the minimum investment ARB Flagship Multi-Strategy Series accepts from an outside investor is $250,000.

Who can invest in ARB Flagship Multi-Strategy Series?

ARB Flagship Multi-Strategy Series 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 ARB Flagship Multi-Strategy Series raised?

ARB Flagship Multi-Strategy Series reports $31,871,421 sold from 25 investors on its Form D filed Jun 1, 2026. This is cumulative sales since the offering began, not current assets or performance.

Where is ARB Flagship Multi-Strategy Series based?

ARB Flagship Multi-Strategy Series is based in Chicago, Illinois.

When did ARB Flagship Multi-Strategy Series launch?

ARB Flagship Multi-Strategy Series reports its first sale in Apr 2024, 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 hedge fund

Raised more than 50% of the 323 hedge funds based in Illinois, and more than 38% of all 10,307 that report sales.

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