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

SecurityTSLX / Sixth Street Specialty Lending, Inc.
InstitutionFirst Horizon Advisors, Inc.
Latest Disclosed Ownership4,123 shares
Latest Disclosed Value $ 98,168
First Horizon Advisors, Inc. reports 73.97% increase in ownership of TSLX / Sixth Street Specialty Lending, Inc.

On August 6, 2025 - First Horizon Advisors, Inc. filed a 13F-HR form disclosing ownership of 4,123 shares of Sixth Street Specialty Lending, Inc. (US:TSLX) valued at $98,169 USD as of June 30, 2025. The entity filed a previous 13F-HR on April 28, 2025 disclosing 2,370 shares of Sixth Street Specialty Lending, Inc.. This represents a change in shares of 73.97% during the quarter. The current value of the position is $72,853 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)
2025-08-06 2025-06-30 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 4,123 1,753 73.97 98 84.91 0.0026
2025-04-28 2025-03-31 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 2,370 68 2.95 53 8.16 0.0015
2025-02-03 2024-12-31 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 2,302 465 25.31 49 32.43 0.0014
2024-11-08 2024-09-30 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 1,837 35 1.94 38 -2.63 0.0010
2024-07-19 2024-06-30 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 1,802 323 21.84 38 22.58 0.0012
2024-04-26 2024-03-31 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 1,479 726 96.41 32 93.75 0.0010
2024-02-06 2023-12-31 13F SIXTH STREET SPECIALTY LENDING COM COMMON STOCK 83012A109 753 753 16 0.0005
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.