AltMountain

Flexstone Partners, LLC

New York, NY · CRD 147353
Private equity manager

Flexstone Partners, LLC is an SEC-registered investment adviser based in New York, NY that reports managing 42 private funds on Form ADV, including 42 private equity funds. It reports $7.2 billion in regulatory assets under management. Its private funds hold $6.6 billion in gross assets.

Regulatory assets under management
$7.2 billionForm ADV Item 5.F
Gross assets of private funds
$6.6 billionAll private fund types, Form ADV
Private funds managed
42PE 42 · VC 0 · hedge 0
Employees
46Form ADV Item 5.A
Registration
SEC-registered adviserCRD 147353
Latest Form ADV
09/30/2026Disciplinary disclosures: none reported

Private equity funds filing Form D (2)

Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.

From SEC filings. Firm data comes from the SEC's Form ADV data. AltMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures