# Flexstone Partners, LLC

> Flexstone Partners, LLC is an SEC-registered investment advisory firm in New York, NY, registered since 2008, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated September 30, 2026.

- CRD: 147353
- Filed as: FLEXSTONE PARTNERS, LLC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: New York, NY
- Filing period: October 2026
- Form ADV filing dated: September 30, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/147353
- AdvisorCensus page: https://advisorcensus.com/firm/flexstone-partners-llc-new-york-ny-147353

## Quick answers

**How is Flexstone Partners, LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Flexstone Partners, LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees.

**How much does Flexstone Partners, LLC charge?**
Its Form ADV Part 2A brochure dated March 30, 2026 states: Asset-based fee: 0.225% to 2% a year (a range, as the brochure states it). Fees can differ by service and may be negotiable; the brochure is the complete statement.

**Where is Flexstone Partners, LLC located?**
Flexstone Partners, LLC's principal office is in New York, NY, according to its Form ADV; the October 2026 filing also lists 1 other office (Schedule D, Section 1.F).

**Is Flexstone Partners, LLC registered with the SEC or a state?**
Flexstone Partners, LLC is an SEC-registered investment advisory firm, registered since 2008. Status as filed: Approved. CRD 147353.

**How much does Flexstone Partners, LLC manage?**
Flexstone Partners, LLC reports $7,201,604,218 in regulatory assets under management in its Form ADV filing dated September 30, 2026 (53% discretionary).

**How have Flexstone Partners, LLC's assets and staff changed since 2021?**
In the Form ADV data for Flexstone Partners, LLC: Regulatory assets under management: $4,126,141,201 in the October 2021 data and $7,201,604,218 in the October 2026 data, up 75%. Total employees: 17 in October 2021 and 46 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Flexstone Partners, LLC serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (48).

**Does Flexstone Partners, LLC report any disciplinary disclosures?**
Reports 3 disclosure items on Form ADV Item 11: yes answers to 11.A(1) (felony conviction or plea in the past ten years), 11.C(2) (SEC or CFTC finding of a violation), and 11.C(5) (SEC or CFTC civil money penalty or cease-and-desist order). Each question covers the firm and its advisory affiliates, and one event can produce several yes answers. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/147353

**What changed in Flexstone Partners, LLC's recent Form ADV filings?**
In the October 2026 filing data: Reported a succession: took over the business of Glouston Capital Partners, LLC (CRD 133792) on August 31, 2026. Employees performing advisory functions went from 9 to 21. Regulatory assets under management went from $5,303,806,003 to $7,201,604,218 (+36%). Added an office in Boston, MA. Updated its list of owners and control persons (Schedule A).

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Performance-based fees

### Fees and minimums (Form ADV Part 2A brochure dated March 30, 2026)

- Asset-based fee: 0.225% to 2% a year (a range, as the brochure states it)

> Management fees range from 0.225% to 2% per annum for the Funds.

As stated in the firm's brochure. Fees can differ by service and may be negotiable.

### Regulatory assets under management (Item 5.F)
- Total: $7,201,604,218
- Discretionary: $3,846,711,923
- Non-discretionary: $3,354,892,295

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Pooled investment vehicles (other than investment companies and business development companies) | 48 | $7,201,604,218 |

### Advisory services (Item 5.G)
- Portfolio management for pooled investment vehicles (other than investment companies)

### Firm details
- Registered since: 2008 (18 years)
- Employees: 46 total, 21 performing advisory functions
- Wrap fee program participation: No
- Disclosures (Item 11): Reports 3 disclosure items on Form ADV Item 11.

### Item 11 questions answered yes
- 11.A(1): In the past ten years, has the firm or an advisory affiliate been convicted of, or pleaded guilty or no contest to, a felony?
- 11.C(2): Has the SEC or the CFTC ever found that the firm or an advisory affiliate was involved in a violation of SEC or CFTC regulations or statutes?
- 11.C(5): Has the SEC or the CFTC ever imposed a civil money penalty on the firm or an advisory affiliate, or ordered the firm or an advisory affiliate to cease and desist from an activity?

Each question covers the firm and its advisory affiliates: its current employees other than clerical staff, its officers, partners, and directors, and anyone who controls the firm or is controlled by it. One event can produce yes answers to several questions. SEC-registered advisers and exempt reporting advisers may leave out events more than ten years old, and may answer 11.A(2) and 11.B(2) for pending charges only. The detail of each yes answer is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/147353

### Other offices (Schedule D, Section 1.F), as of the October 2026 filing
- Boston, MA

### Websites listed on Form ADV (Item 1.I)
- flexstonepartners.com
- LinkedIn @flexstonepartners

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $4,126,141,201 | 17 | August 9, 2021 |
| October 2022 | $4,834,899,163 | 17 | September 23, 2022 |
| October 2023 | $5,188,544,129 | 19 | August 14, 2023 |
| October 2024 | $5,351,394,491 | 24 | July 1, 2024 |
| October 2025 | $5,337,670,732 | 23 | March 27, 2025 |
| October 2026 | $7,201,604,218 | 46 | September 30, 2026 |

Regulatory assets under management: $4,126,141,201 in the October 2021 data and $7,201,604,218 in the October 2026 data, up 75%.
Total employees: 17 in October 2021 and 46 in October 2026.

## Changes in the filing (last 12 months)

### October 2026
- Reported a succession: took over the business of Glouston Capital Partners, LLC (CRD 133792) on August 31, 2026.
- Employees performing advisory functions went from 9 to 21.
- Regulatory assets under management went from $5,303,806,003 to $7,201,604,218 (+36%).
- Added an office in Boston, MA.
- Updated its list of owners and control persons (Schedule A).

### April 2026
- Employees performing advisory functions went from 7 to 9.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Flexstone Partners, LLC (CRD 147353): Form ADV filing data as of October 2026.