Kelso & Company, L.P.
SEC-registered
Private Fund Manager · Large ($10B–$100B)
CRD 131471
· SEC file 801-73793
· New York, NY
· www.linkedin.com
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ADV data as of Apr 30, 2026
- Regulatory AUM
- $14.3B
- Discretionary
- $14.3B
- Clients
- 54
- Avg AUM / client
- $265M
- Accounts
- 54
- Employees
- 64
AUM over time
$7.6B
$16.7B
Dec 2011
Dec 2025
Annual snapshots from Form ADV filings · as of Apr 30, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 54 | $14.3B | 100.0% |
Private funds (49)
View all →Reported in Form ADV Section 7.B.(1), filing of Apr 2024 · $18.5B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Kelso Investment Associates X, L.P. master | Private Equity Fund | Delaware | $4.7B | 149 |
| Kelso Investment Associates Xi, L.P. master | Private Equity Fund | Delaware | $3.5B | 180 |
| Kelso Investment Associates Ix, L.P. master | Private Equity Fund | Delaware | $1.4B | 125 |
| Kep Vi, Llc | Private Equity Fund | Delaware | $699M | 160 |
| Kelso Breathe Investor (De), L.P. | Private Equity Fund | Delaware | $696M | 16 |
| Kelso Breathe Investor, L.P. | Private Equity Fund | Delaware | $696M | 16 |
| Kelso X Rsc Co Investment, L.P. | Private Equity Fund | Delaware | $584M | 16 |
| Kelso Breathe Investor (De) 2, L.P. | Private Equity Fund | Delaware | $575M | 6 |
| Kelso Breathe Investor 2, L.P. | Private Equity Fund | Delaware | $575M | 6 |
| Kep X, Llc | Private Equity Fund | Delaware | $519M | 112 |
| Kep Xi, Llc | Private Equity Fund | Delaware | $452M | 101 |
| Kelso Ranger Rsc Investor, L.P. | Private Equity Fund | Delaware | $452M | 5 |
| Kia Xi Waterloo Spv, L.P. | Private Equity Fund | Delaware | $387M | 8 |
| Kia Xi Waterloo Spv (De), L.P. | Private Equity Fund | Delaware | $387M | 8 |
| Kelso Investment Associates Viii, L.P. master | Private Equity Fund | Delaware | $275M | 203 |
People (25)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Nickell, Frank, Templeton | Shareholder | Mar 1989 (37y) | ≈ 2.5% – 12.5% via Kelso & Companies, Inc. | |
| Goldberg, Michael, Bruce | Shareholder | Dec 1992 (34y) | ≈ 0% – 5% via Alexis Holding Corp. | |
| Connors, James, J | Limited Partner And Managing Director | Dec 2011 (15y) | Less than 5% | |
| Alexander, Anna, Lynn | Limited Partner And Managing Director | Jan 2014 (13y) | Less than 5% | |
| Bynum, Frank, Kitchell | Limited Partner And Managing Director | Jan 2014 (13y) | Less than 5% | |
| Goldberg, Michael, B | Managing Director | Jan 2014 (13y) | Less than 5% | |
| Matelich, George, Edward | Shareholder | Jan 2014 (13y) | ≈ 2.5% – 12.5% via Kelso & Companies, Inc. | |
| Matlin, Howard, A. | Limited Partner And Managing Director | Jan 2014 (13y) | Less than 5% | |
| Moore, Church, Murdock | Limited Partner And Managing Director | Jan 2014 (13y) | Less than 5% | |
| Osborne, Stanley, De Jongh | Limited Partner And Managing Director | Jan 2014 (13y) | Less than 5% | |
| Wahrhaftig, David, Ira | Limited Partner And Managing Director | Jan 2014 (13y) | Less than 5% | |
| Wall, Thomas, Robert | Shareholder | Jan 2014 (13y) | ≈ 2.5% – 12.5% via Kelso & Companies, Inc. | |
| Mannix, Henry | Limited Partner And Managing Director | Jan 2015 (12y) | Less than 5% | |
| Loverro, Frank, John | Limited Partner And Managing Director And Co Chief Executive Officer | Jan 2016 (11y) | Less than 5% | |
| Dutton, Stephen, C | Limited Partner And Managing Director | Mar 2016 (10y) | Less than 5% | |
| Edgerton, Matthew | Limited Partner And Managing Director | Mar 2016 (10y) | Less than 5% | |
| Hufnagel, Alec, Jacques | Limited Partner And Managing Director | Jan 2019 (8y) | Less than 5% | |
| Cohen, David, Lawrence | Limited Partner And Managing Director | May 2019 (7y) | Less than 5% | |
| Woo, William | Limited Partner, Managing Director, General Counsel And Chief Compliance Officer | May 2019 (7y) | Less than 5% | |
| Nichols, Michael, P | Limited Partner And Managing Director | Jan 2020 (7y) | Less than 5% | |
| Kopilak, Joseph, Marc | Limited Partner, Managing Director And Chief Financial Officer | Apr 2021 (5y) | Less than 5% | |
| Neumann, Beth, Gilmartin | Limited Partner And Managing Director | May 2021 (5y) | Less than 5% | |
| Berney, Philip, Edward | Limited Partner, Managing Director And Chairman | Mar 2023 (3y) | Less than 5% | |
| Collins, Christopher, Lawrence | Limited Partner And Managing Director And Co Chief Executive Officer | Mar 2023 (3y) | Less than 5% | |
| Frayer, William, Charles | Limited Partner And Managing Director | Jan 2024 (3y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Kelso & Companies, Inc. | Limited Partner | Mar 2021 | A | 10% – 25% |
| Alexis Holding Corp. | Limited Partner | Jan 2014 | A | Less than 5% |
| Kelso & Company, Llc | General Partner | Mar 2021 | A | Less than 5% |
Undisclosed: 0% – 90% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Nickell, Frank, Templeton: 25% – 50% of Kelso & Companies, Inc. × 10% – 25% direct ≈ 2.5% – 12.5% of the firm
- Goldberg, Michael, Bruce: 75% – 100% of Alexis Holding Corp. × 0% – 5% direct ≈ 0% – 5% of the firm
- Matelich, George, Edward: 25% – 50% of Kelso & Companies, Inc. × 10% – 25% direct ≈ 2.5% – 12.5% of the firm
- Wall, Thomas, Robert: 25% – 50% of Kelso & Companies, Inc. × 10% – 25% direct ≈ 2.5% – 12.5% 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 (49, $18.5B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Kelso Investment Associates X, L.P. | Private Equity Fund | $4.7B | $10.0M | 149 |
| Kelso Investment Associates Xi, L.P. | Private Equity Fund | $3.5B | $10.0M | 180 |
| Kelso Investment Associates Ix, L.P. | Private Equity Fund | $1.4B | $10.0M | 125 |
| Kep Vi, Llc | Private Equity Fund | $699M | $0 | 160 |
| Kelso Breathe Investor (De), L.P. | Private Equity Fund | $696M | $0 | 16 |
| Kelso Breathe Investor, L.P. | Private Equity Fund | $696M | $0 | 16 |
| Kelso X Rsc Co Investment, L.P. | Private Equity Fund | $584M | $0 | 16 |
| Kelso Breathe Investor (De) 2, L.P. | Private Equity Fund | $575M | $0 | 6 |
| Kelso Breathe Investor 2, L.P. | Private Equity Fund | $575M | $0 | 6 |
| Kep X, Llc | Private Equity Fund | $519M | $0 | 112 |
| Kep Xi, Llc | Private Equity Fund | $452M | $0 | 101 |
| Kelso Ranger Rsc Investor, L.P. | Private Equity Fund | $452M | $0 | 5 |
| Kia Xi Waterloo Spv, L.P. | Private Equity Fund | $387M | $0 | 8 |
| Kia Xi Waterloo Spv (De), L.P. | Private Equity Fund | $387M | $0 | 8 |
| Kelso Investment Associates Viii, L.P. | Private Equity Fund | $275M | $10.0M | 203 |
| Kelso X Pie Co Investment, L.P. | Private Equity Fund | $259M | $0 | 23 |
| Kelso Xi Heights Co Investment (De), L.P. | Private Equity Fund | $232M | $0 | 37 |
| Kelso Xi Heights Co Investment, L.P. | Private Equity Fund | $232M | $0 | 37 |
| Kelso Watchtower Co Investment, L.P. | Private Equity Fund | $229M | $0 | 8 |
| K P Co Investment, L.P. | Private Equity Fund | $169M | $0 | 3 |
| Kelso Watchtower Co Investment (De), L.P. | Private Equity Fund | $143M | $0 | 9 |
| William Holding 1, L.P. | Private Equity Fund | $126M | $0 | 3 |
| Kelso Xi Tailwind Co Investment (De), L.P. | Private Equity Fund | $117M | $0 | 7 |
| Kelso Partners (Breathe), L.P. | Private Equity Fund | $107M | $0 | 36 |
| Bradyifs Blocker Holdings, L.P. | Private Equity Fund | $98.3M | $0 | 2 |
Top 25 of 49 funds by gross assets · all funds
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 04/30/2026 | 11.5 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
- • Other fees
- • INVESTMENT FEES, MONITORING FEES AND OTHER SIMILAR 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 30, 2026.
View current Form ADV (SEC/IAPD) ↗