Sixth Street Specialty Lending Advisers, Llc
SEC-registered
Investment Adviser · Mid-sized ($1B–$10B)
CRD 155006
· SEC file 801-72185
· Dallas, TX
· X.COM
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ADV data as of Jul 01, 2026
- Regulatory AUM
- $3.4B
- Discretionary
- $3.4B
- Clients
- 1
- Avg AUM / client
- $3.4B
- Accounts
- 1
- Employees
- 66
AUM over time
$1.3B
$3.6B
Dec 2011
Jul 2026
Annual snapshots from Form ADV filings · as of Jul 01, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Business development companies | 1 | $3.4B | 100.0% |
People (13)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Easterly, Joshua, William | Co Chief Investment Officer | Feb 2011 (16y) | Less than 5% | |
| Waxman, Alan, Samuel | Co Chief Investment Officer | Feb 2011 (16y) | Less than 5% | |
| Gordon, Jennifer, E. | Chief Compliance Officer | May 2015 (11y) | Less than 5% | |
| Simmonds, Ian, Timothy | Chief Financial Officer, Tslx | Nov 2015 (11y) | Less than 5% | |
| Muscolino, Anthony, Michael | Executive Committee Member | Jun 2017 (9y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Stiepleman, David, Eric | Co President & Executive Committee Member | Jun 2017 (9y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Dillard, Matthew, Brady | Executive Committee Member | May 2020 (6y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Moghbel, Bornah | Executive Committee Member | May 2020 (6y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Chavez, Ramon, Martin | Executive Committee Member | May 2021 (5y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Salisbury, Julian, Charles | Executive Committee Member | Jan 2024 (3y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| D'arcy, Brian, Edward | Executive Committee Member | Feb 2024 (3y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Korn, Adam, M | Executive Committee Member | Feb 2024 (3y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) | |
| Feldman, Mark, C | Executive Committee Member | Oct 2024 (2y) | GP / trustee / elected manager of Sixth Street Gp, Llc (indirect) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Sixth Street Specialty Lending Advisers Holdings, Llc | Member | May 2020 | A | 75% or more |
| Sixth Street Specialty Lending Management, L.P. | Member | May 2020 | B | ≈ 56.25% – 100% via Sixth Street Specialty Lending Advisers Holdings, Llc |
| Sixth Street Partners Management Company, L.P. | Member | Jul 2020 | B | ≈ 31.64% – 100% via Sixth Street Partners Management Sub, Llc |
| Tssp Management Holdings, L.P. | Limited Partner | Aug 2024 | B | ≈ 17.8% – 100% via Maple (M) Issuer, Llc |
| Sixth Street Founders Management, L.P. | Limited Partner | Jun 2017 | B | ≈ 13.35% – 100% via Tssp Management Holdings, L.P. |
| Sixth Street Partners Management Sub, Llc | Limited Partner | Jul 2020 | B | ≈ 42.19% – 100% via Sixth Street Specialty Lending Management, L.P. |
| Maple (M) Issuer, Llc | Limited Partner | Aug 2024 | B | ≈ 23.73% – 100% via Sixth Street Partners Management Company, L.P. |
| Tssp Holdco Management, Llc | Managing Member | May 2020 | B | GP / trustee / elected manager of Sixth Street Specialty Lending Advisers Holdings, Llc (indirect) |
| Sixth Street Gp, Llc | General Partner | Feb 2012 | B | GP / trustee / elected manager of Sixth Street Specialty Lending Management, L.P. (indirect) |
| Sixth Street Gp Sub, Llc | General Partner | Sep 2021 | B | GP / trustee / elected manager of Sixth Street Founders Management, L.P. (indirect) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Sixth Street Specialty Lending Management, L.P.: 75% – 100% of Sixth Street Specialty Lending Advisers Holdings, Llc × 75% – 100% direct ≈ 56.25% – 100% of the firm
- Sixth Street Partners Management Company, L.P.: 75% – 100% of Sixth Street Partners Management Sub, Llc × 75% – 100% of Sixth Street Specialty Lending Management, L.P. × 75% – 100% of Sixth Street Specialty Lending Advisers Holdings, Llc × 75% – 100% direct ≈ 31.64% – 100% of the firm
- Tssp Management Holdings, L.P.: 75% – 100% of Maple (M) Issuer, Llc × 75% – 100% of Sixth Street Partners Management Company, L.P. × 75% – 100% of Sixth Street Partners Management Sub, Llc × 75% – 100% of Sixth Street Specialty Lending Management, L.P. × 75% – 100% of Sixth Street Specialty Lending Advisers Holdings, Llc × 75% – 100% direct ≈ 17.8% – 100% of the firm
- Sixth Street Founders Management, L.P.: 75% – 100% of Tssp Management Holdings, L.P. × 75% – 100% of Maple (M) Issuer, Llc × 75% – 100% of Sixth Street Partners Management Company, L.P. × 75% – 100% of Sixth Street Partners Management Sub, Llc × 75% – 100% of Sixth Street Specialty Lending Management, L.P. × 75% – 100% of Sixth Street Specialty Lending Advisers Holdings, Llc × 75% – 100% direct ≈ 13.35% – 100% of the firm
- Sixth Street Partners Management Sub, Llc: 75% – 100% of Sixth Street Specialty Lending Management, L.P. × 75% – 100% of Sixth Street Specialty Lending Advisers Holdings, Llc × 75% – 100% direct ≈ 42.19% – 100% of the firm
- Maple (M) Issuer, Llc: 75% – 100% of Sixth Street Partners Management Company, L.P. × 75% – 100% of Sixth Street Partners Management Sub, Llc × 75% – 100% of Sixth Street Specialty Lending Management, L.P. × 75% – 100% of Sixth Street Specialty Lending Advisers Holdings, Llc × 75% – 100% direct ≈ 23.73% – 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.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 07/01/2026 | 5.19 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 investment companies
Custody
Firm reports it does not have 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: Jul 01, 2026.
View current Form ADV (SEC/IAPD) ↗