Mainsail Management Company, Llc
- Regulatory AUM
- $4.0B
- Discretionary
- $4.0B
- Clients
- 14
- Avg AUM / client
- $285M
- Accounts
- 14
- Employees
- 81
AUM over time
Annual snapshots from Form ADV filings · as of Apr 06, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 14 | $4.0B | 100.0% |
Private funds (10)
Reported in Form ADV Section 7.B.(1), filing of Apr 2024 · $2.3B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Mainsail Partners Vi, L.P. | Private Equity Fund | Delaware | $963M | 108 |
| Mainsail Partners V, L.P. | Private Equity Fund | Delaware | $734M | 94 |
| Mainsail Partners Iv, L.P. | Private Equity Fund | Delaware | $246M | 78 |
| Mainsail Partners Iii, L.P. | Private Equity Fund | Delaware | $135M | 65 |
| Mainsail 3 Pl Holdings, L.P. | Private Equity Fund | Delaware | $132M | 55 |
| Mainsail Gt Spv, L.P. | Private Equity Fund | Delaware | $48.5M | 27 |
| Mainsail Partners Executive Fund Vi, L.P. | Private Equity Fund | Delaware | $40.5M | 94 |
| Mainsail Partners Executive Fund V, L.P. | Private Equity Fund | Delaware | $27.2M | 73 |
| Mainsail Co Investors Iii, L.P. | Private Equity Fund | Delaware | $3.0M | 55 |
| Mainsail Incentive Program, Llc | Private Equity Fund | Delaware | $2.4M | 39 |
People (3)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Turner, Gavin, Mitchell | Managing Director, Managing Member | Aug 2004 (22y) | ≈ 56.25% – 100% via Mainsail Management Company Holdings, Llc | |
| Salisbury, William, Richard | Chief Compliance Officer, Chief Financial Officer And Operating Partner | Jul 2016 (10y) | Less than 5% | |
| Atkinson, Lynn, Marie | Chief Operating Officer | Feb 2020 (7y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Mainsail Management Company Holdings, Llc | Manager | Aug 2022 | A | 75% or more |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Turner, Gavin, Mitchell: 75% – 100% of Mainsail Management Company Holdings, Llc × 75% – 100% direct ≈ 56.25% – 100% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (10, $2.3B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Mainsail Partners Vi, L.P. | Private Equity Fund | $963M | $5.0M | 108 |
| Mainsail Partners V, L.P. | Private Equity Fund | $734M | $5.0M | 94 |
| Mainsail Partners Iv, L.P. | Private Equity Fund | $246M | $2.0M | 78 |
| Mainsail Partners Iii, L.P. | Private Equity Fund | $135M | $2.0M | 65 |
| Mainsail 3 Pl Holdings, L.P. | Private Equity Fund | $132M | $0 | 55 |
| Mainsail Gt Spv, L.P. | Private Equity Fund | $48.5M | $0 | 27 |
| Mainsail Partners Executive Fund Vi, L.P. | Private Equity Fund | $40.5M | $100K | 94 |
| Mainsail Partners Executive Fund V, L.P. | Private Equity Fund | $27.2M | $100K | 73 |
| Mainsail Co Investors Iii, L.P. | Private Equity Fund | $3.0M | $50.0K | 55 |
| Mainsail Incentive Program, Llc | Private Equity Fund | $2.4M | $0 | 39 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 04/06/2026 | 3.83 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
Custody
Firm reports having custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Apr 06, 2026.
View current Form ADV (SEC/IAPD) ↗