TSLX · NYSE · CIK 0001508655

Sixth Street Specialty Lending, Inc.

Sixth Street Specialty Lending, Inc.’s most recent SEC filing in our snapshot is a Form SCHEDULE 13G/A filed on Aug 14, 2026. Its EDGAR record lists 10 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
—
Net income, FY2025
$170.5M
Form 4 filings on record, past 12 months
10

Company overview

Legal name (as filed)
Sixth Street Specialty Lending, Inc.
Ticker
TSLX
SEC Central Index Key (CIK)
0001508655
Industry (SIC)
—
Business address
DALLAS, TX
State or country of incorporation
DE
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#2111 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from Sixth Street Specialty Lending, Inc.’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
n/aFY2021n/aFY2022n/aFY2023n/aFY2024n/aFY2025
Net income
$211.8MFY2021$108.1MFY2022$222.0MFY2023$186.6MFY2024$170.5MFY2025
TSLX annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue—————
Net income$211.8M$108.1M$222.0M$186.6M$170.5M
Diluted EPS$2.79$1.38$2.61$2.03$1.81
Total assets$2.6B$2.8B$3.3B$3.6B$3.4B
Cash and equivalents$16.0M$25.6M$25.2M$27.3M$19.7M

XBRL tags used: netIncome = ProfitLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

TSLX latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 12, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 4, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 4, 20268-KResults of operations; Regulation FD disclosure· period Aug 4, 2026Document · Index
Apr 9, 2026DEF 14ADefinitive proxy statement· period May 21, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about Sixth Street Specialty Lending, Inc., by form type:

4 ×108-K ×910-Q ×3DEFA14A ×3DEFR14A ×2424B2 ×2DEF 14A ×23 ×1SCHEDULE 13G/A ×1SCHEDULE 13G ×1497AD ×1FWP ×1ARS ×1PRE 14A ×140-17G ×110-K ×1
TSLX recent filings
FiledFormWhat it isOriginal
Aug 14, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Aug 4, 20268-KResults of operations; Regulation FD disclosure· period Aug 4, 2026Document · Index
Aug 4, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Jul 8, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Jun 18, 20268-KShareholder vote results· period Jun 18, 2026Document · Index
May 29, 20264Statement of changes in beneficial ownership (insider trade)· period May 28, 2026Document · Index
May 22, 20268-KShareholder vote results· period May 21, 2026Document · Index
May 15, 2026DEFR14ADEFR14ADocument · Index
May 15, 2026DEFR14ADEFR14ADocument · Index
May 14, 20268-KMaterial agreement; New financial obligation; Other events· period May 14, 2026Document · Index
May 13, 20264Statement of changes in beneficial ownership (insider trade)· period May 11, 2026Document · Index
May 11, 2026424B2Prospectus (pricing supplement)Document · Index
May 8, 2026497AD497ADDocument · Index
May 7, 2026FWPFWPDocument · Index
May 7, 2026424B2Prospectus (pricing supplement)Document · Index
May 5, 20268-KResults of operations; Regulation FD disclosure· period May 5, 2026Document · Index
May 5, 202610-QQuarterly report· period Mar 31, 2026Document · Index
Apr 10, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Apr 9, 2026ARSARS· period Dec 31, 2025Document · Index
Apr 9, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Apr 9, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Apr 9, 2026DEF 14ADefinitive proxy statement· period May 21, 2026Document · Index
Apr 9, 2026DEF 14ADefinitive proxy statement· period May 21, 2026Document · Index
Mar 20, 2026PRE 14APRE 14A· period Mar 20, 2026Document · Index
Mar 13, 202640-17G40-17GDocument · Index
Mar 11, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 9, 2026Document · Index
Mar 10, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 6, 2026Document · Index
Mar 9, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 5, 2026Document · Index
Mar 4, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 2, 2026Document · Index
Mar 3, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 2, 2026Document · Index
Mar 3, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 27, 2026Document · Index
Mar 2, 20264Statement of changes in beneficial ownership (insider trade)· period Feb 26, 2026Document · Index
Feb 23, 20268-KDirector or officer change; Regulation FD disclosure; Other events· period Feb 19, 2026Document · Index
Feb 20, 20263Initial statement of beneficial ownership· period Feb 12, 2026Document · Index
Feb 12, 20268-KResults of operations; Regulation FD disclosure· period Feb 12, 2026Document · Index
Feb 12, 202610-KAnnual report· period Dec 31, 2025Document · Index
Nov 20, 20254Statement of changes in beneficial ownership (insider trade)· period Nov 18, 2025Document · Index
Nov 4, 20258-KResults of operations; Director or officer change; Charter, bylaws or fiscal year change; Regulation FD disclosure· period Nov 4, 2025Document · Index
Nov 4, 202510-QQuarterly report· period Sep 30, 2025Document · Index
Jul 30, 20258-KResults of operations; Regulation FD disclosure· period Jul 30, 2025Document · Index

Insider filing activity

10 Form 4 filings appear in Sixth Street Specialty Lending, Inc.’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

On Amazon

Popular tools for investors

As an Amazon Associate I earn from qualifying purchases.

Electronics Plaud Note Pro AI Voice Recorder An AI voice recorder that turns earnings calls and meetings into notes. View on Amazon → Electronics Amazon Kindle Paperwhite Signature Edition 32GB Read investing classics and long reports without eye strain. View on Amazon → Electronics Apple 2026 MacBook Air 13-inch Laptop A lightweight laptop for spreadsheets and filing research. View on Amazon →

Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001508655 and XBRL company facts. Sixth Street Specialty Lending, Inc. on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.