Company Analysis

Sixth Street Specialty Lending, Inc. (TSLX)

NYSE: TSLX · Dallas, TX · filing with the SEC since 2011
Grade5.3
◀ Past 6.1● Present 5.3▶ Future 4.5
5 est.

Filings

381 filings since 2017 beside 59 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-K Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends. by Mar 1, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 34 days after the quarter ended. The proxy statement was last filed Apr 9, 2026.

Filings a yearinsider forms included
4051484143343441
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 4 times in the last 36 months, the newest Feb 23, 2026.SEC letters: 2 in the last 36 months, the newest Apr 10, 2025.
Insider forms 59

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 10, 2026 8-K items 1.01, 9.01 Major agreement signed · Current report Nov 9, 2026
Nov 10, 2026 424B2 Offering prospectus, notes or structured products
Nov 10, 2026 N-2ASR Form N-2ASR
Nov 3, 2026 8-K items 2.02, 7.01, 9.01 Results released; Investor disclosure (Regulation FD) · Current report
Nov 3, 2026 10-Q Quarterly report Sep 30, 2026
Aug 14, 2026 SCHEDULE 13G/A Large holder update, amended
Aug 4, 2026 8-K items 2.02, 7.01, 9.01 Results released; Investor disclosure (Regulation FD) · Current report
Aug 4, 2026 10-Q Quarterly report Jun 30, 2026
Jul 8, 2026 SCHEDULE 13G Large holder notice
Jun 18, 2026 8-K item 5.07 Shareholder vote · Current report
May 22, 2026 8-K item 5.07 Shareholder vote · Current report May 21, 2026
May 15, 2026 DEFR14A Revised proxy statement
May 15, 2026 DEFR14A Revised proxy statement
May 14, 2026 8-K items 1.01, 2.03, 8.01, 9.01 Major agreement signed; New debt or obligation taken on; Other event · Current report
May 11, 2026 424B2 Offering prospectus, notes or structured products
May 8, 2026 497AD Form 497AD
May 7, 2026 FWP Offering communication
May 7, 2026 424B2 Offering prospectus, notes or structured products
May 5, 2026 8-K items 2.02, 7.01, 9.01 Results released; Investor disclosure (Regulation FD) · Current report
May 5, 2026 10-Q Quarterly report Mar 31, 2026
Apr 10, 2026 DEFA14A Extra proxy material
Apr 9, 2026 ARS Annual report to shareholders Dec 31, 2025
Apr 9, 2026 DEFA14A Extra proxy material
Apr 9, 2026 DEFA14A Extra proxy material
Apr 9, 2026 DEF 14A Proxy statement May 21, 2026
Apr 9, 2026 DEF 14A Proxy statement May 21, 2026
Mar 20, 2026 PRE 14A Preliminary proxy statement
Mar 13, 2026 40-17G Form 40-17G
Feb 23, 2026 8-K items 5.02, 7.01, 8.01, 9.01 Officer or director change; Investor disclosure (Regulation FD); Other event · Current report Feb 19, 2026
Feb 12, 2026 8-K items 2.02, 7.01, 9.01 Results released; Investor disclosure (Regulation FD) · Current report
Feb 12, 2026 10-K Annual report Dec 31, 2025
Nov 4, 2025 8-K items 2.02, 5.02, 5.03, 7.01, 9.01 Results released; Officer or director change; Charter, bylaw or fiscal-year change; Investor disclosure (Regulation FD) · Current report
Nov 4, 2025 10-Q Quarterly report Sep 30, 2025
Jul 30, 2025 8-K items 2.02, 7.01, 9.01 Results released; Investor disclosure (Regulation FD) · Current report
Jul 30, 2025 10-Q Quarterly report Jun 30, 2025
Jul 3, 2025 8-K item 5.02 Officer or director change · Current report Jun 30, 2025
Jun 20, 2025 8-K item 5.07 Shareholder vote · Current report
May 23, 2025 8-K item 5.07 Shareholder vote · Current report May 22, 2025
May 7, 2025 APP ORDR Form APP ORDR
May 5, 2025 APP NTC Form APP NTC
40 of 381 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton TSLX · research, not advice