Sixth Street Specialty Lending, Inc.
US ˙ NYSE ˙ US83012A1097

SecurityTSLX / Sixth Street Specialty Lending, Inc.
InstitutionAres Management Llc
Latest Disclosed Ownership1,354,779 shares
Latest Disclosed Value $ 24,900,838
Ares Management Llc ownership in TSLX / Sixth Street Specialty Lending, Inc.

On May 15, 2026 - Ares Management Llc filed a 13F-HR form disclosing ownership of 1,354,779 shares of Sixth Street Specialty Lending, Inc. (US:TSLX) valued at $24,900,838 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,354,779 shares of Sixth Street Specialty Lending, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $23,559,607 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F Sixth Street Specialty Lending COM 83012A109 1,354,779 0 0.00 24,901 -15.38 1.6412
2026-02-13 2025-12-31 13F Sixth Street Specialty Lending COM 83012A109 1,354,779 -40,000 -2.87 29,426 -7.71 1.6811
2025-11-14 2025-09-30 13F Sixth Street Specialty Lending COM 83012A109 1,394,779 -7,910 -0.56 31,885 -4.53 1.4475
2025-08-14 2025-06-30 13F Sixth Street Specialty Lending COM 83012A109 1,402,689 30,000 2.19 33,398 8.72 1.7077
2025-05-15 2025-03-31 13F Sixth Street Specialty Lending COM 83012A109 1,372,689 -183,062 -11.77 30,721 -7.29 1.8849
2025-02-14 2024-12-31 13F Sixth Street Specialty Lending COM 83012A109 1,555,751 0 0.00 33,137 3.75 1.1654
2024-11-14 2024-09-30 13F Sixth Street Specialty Lending COM 83012A109 1,555,751 375,167 31.78 31,940 26.72 0.8856
2024-08-14 2024-06-30 13F Sixth Street Specialty Lending COM 83012A109 1,180,584 -113,560 -8.77 25,205 -9.12 0.7475
2024-05-15 2024-03-31 13F Sixth Street Specialty Lending COM 83012A109 1,294,144 525,996 68.48 27,734 67.16 0.6355
2024-02-14 2023-12-31 13F Sixth Street Specialty Lending COM 83012A109 768,148 -7,750 -1.00 16,592 4.62 0.4023
2023-11-14 2023-09-30 13F Sixth Street Specialty Lending COM 83012A109 775,898 -15,000 -1.90 15,859 7.29 0.4119
2023-08-14 2023-06-30 13F Sixth Street Specialty Lending COM 83012A109 790,898 400,000 102.33 14,782 106.64 0.3058
2023-05-15 2023-03-31 13F Sixth Street Specialty Lending COM 83012A109 390,898 4,001 1.03 7,153 3.88 0.3993
2023-02-14 2022-12-31 13F Sixth Street Specialty Lending COM 83012A109 386,897 26,410 7.33 6,887 16.91 0.3393
2022-11-14 2022-09-30 13F Sixth Street Specialty Lending COM 83012A109 360,487 22,996 6.81 5,890 -5.67 0.2739
2022-08-12 2022-06-30 13F Sixth Street Specialty Lending COM 83012A109 337,491 0 0.00 6,244 -20.56 0.3205
2022-05-13 2022-03-31 13F Sixth Street Specialty Lending COM 83012A109 337,491 52,342 18.36 7,860 17.84 0.2971
2022-02-14 2021-12-31 13F Sixth Street Specialty Lending COM 83012A109 285,149 0 0.00 6,670 5.32 0.1889
2021-11-12 2021-09-30 13F Sixth Street Specialty Lending COM 83012A109 285,149 43,802 18.15 6,333 18.26 0.2102
2021-08-13 2021-06-30 13F Sixth Street Specialty Lending COM 83012A109 241,347 50,762 26.63 5,355 33.61 0.1895
2021-08-20 2021-03-31 13F/A-1 Sixth Street Specialty Lending COM 83012A109 190,585 92,951 95.20 4,008 97.83 0.1761
2021-05-17 2021-03-31 13F Sixth Street Specialty Lending COM 83012A109 190,585 -50,762 4,008 0.1532
2021-08-20 2020-12-31 13F/A-2 Sixth Street Specialty Lending COM 83012A109 97,634 56,134 135.26 2,026 183.75 0.0893
2021-02-12 2020-12-31 13F Sixth Street Specialty Lending COM 83012A109 97,634 56,134 2,026 0.0899
2021-08-20 2020-09-30 13F/A-1 Sixth Street Specialty Lending COM 83012A109 41,500 41,500 714 0.0438
2020-11-13 2020-09-30 13F Sixth Street Specialty Lending COM 83012A109 41,500 41,500 714 0.0437
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.