PART I [Financial Statements](index=4&type=section&id=Item%201.%20Financial%20Statements) This section presents the unaudited consolidated financial statements for Sixth Street Specialty Lending, Inc. as of September 30, 2021, covering balance sheets, operations, and cash flows with accompanying notes [Consolidated Balance Sheets](index=4&type=section&id=Consolidated%20Balance%20Sheets) As of September 30, 2021, total assets were $2.44 billion, up from $2.34 billion at December 31, 2020, driven by a rise in the fair value of investments to $2.41 billion, leading to an increase in total net assets to $1.25 billion Consolidated Balance Sheet Highlights (in thousands) | Metric | Sep 30, 2021 | Dec 31, 2020 | | :--- | :--- | :--- | | **Total Investments at Fair Value** | $2,406,465 | $2,298,870 | | **Total Assets** | $2,438,474 | $2,338,593 | | **Total Debt (net)** | $1,103,114 | $1,110,363 | | **Total Liabilities** | $1,186,629 | $1,177,278 | | **Total Net Assets** | $1,251,845 | $1,161,315 | | **Net Asset Value Per Share** | $17.18 | $17.16 | [Consolidated Statements of Operations](index=5&type=section&id=Consolidated%20Statements%20of%20Operations) For Q3 2021, total investment income was $71.2 million, with net investment income decreasing to $36.5 million due to higher expenses, resulting in a $55.0 million increase in net assets from operations and basic EPS of $0.75 Q3 2021 vs Q3 2020 Performance (in thousands, except per share data) | Metric | Q3 2021 | Q3 2020 | | :--- | :--- | :--- | | Total Investment Income | $71,200 | $71,316 | | Net Expenses | $34,626 | $28,212 | | Net Investment Income | $36,470 | $41,104 | | Net Unrealized and Realized Gains | $18,486 | $40,753 | | **Increase in Net Assets** | **$54,956** | **$81,857** | | **Earnings Per Share (Basic)** | **$0.75** | **$1.21** | Nine Months Ended Performance (in thousands, except per share data) | Metric | Nine Months 2021 | Nine Months 2020 | | :--- | :--- | :--- | | Total Investment Income | $200,269 | $207,819 | | Net Expenses | $103,373 | $89,575 | | Net Investment Income | $96,167 | $114,234 | | Net Unrealized and Realized Gains | $73,795 | $10,394 | | **Increase in Net Assets** | **$169,962** | **$124,628** | | **Earnings Per Share (Basic)** | **$2.37** | **$1.86** | [Consolidated Schedules of Investments](index=6&type=section&id=Consolidated%20Schedules%20of%20Investments) As of September 30, 2021, total investments at fair value were $2.41 billion, primarily concentrated in debt investments (93.2%) with Business Services as the largest industry concentration at 21.3% Portfolio Composition by Investment Type (Sep 30, 2021) | Investment Type | Fair Value (in thousands) | % of Net Assets | | :--- | :--- | :--- | | Debt Investments | $2,242,484 | 179.1% | | Equity and Other Investments | $163,981 | 13.1% | | **Total Investments** | **$2,406,465** | **192.2%** | Top 5 Industry Concentrations by Fair Value (Sep 30, 2021) | Industry | % of Total Investments | | :--- | :--- | | Business services | 21.3% | | Financial services | 14.4% | | Human resource support services | 11.2% | | Education | 9.6% | | Retail and consumer products | 9.6% | - As of September 30, 2021, two investments were on non-accrual status: Mississippi Resources, LLC and a subordinated note in American Achievement, Corp[35](index=35&type=chunk) [Consolidated Statements of Changes in Net Assets](index=20&type=section&id=Consolidated%20Statements%20of%20Changes%20in%20Net%20Assets) For the nine months ended September 30, 2021, net assets increased by $90.5 million to $1.25 billion, driven by operations and stock issuance, partially offset by dividends Changes in Net Assets (Nine Months Ended Sep 30, 2021, in thousands) | Description | Amount | | :--- | :--- | | **Balance at Dec 31, 2020** | **$1,161,315** | | Net Increase from Operations | $169,962 | | Issuance of Common Stock, net | $85,945 | | Dividend Reinvestment Plan | $23,403 | | Dividends Declared | ($188,454) | | Other Adjustments | ($285) | | **Balance at Sep 30, 2021** | **$1,251,845** | [Consolidated Statements of Cash Flows](index=22&type=section&id=Consolidated%20Statements%20of%20Cash%20Flows) For the nine months ended September 30, 2021, net cash provided by operating activities significantly decreased to $75.9 million, while net cash used in financing activities was $70.9 million, resulting in a $5.0 million net increase in cash Cash Flow Summary (Nine Months Ended, in thousands) | Cash Flow Category | Sep 30, 2021 | Sep 30, 2020 | | :--- | :--- | :--- | | Net Cash Provided by Operating Activities | $75,911 | $289,022 | | Net Cash Used in Financing Activities | ($70,923) | ($287,505) | | **Net Increase in Cash** | **$4,988** | **$1,517** | | Cash, End of Period | $18,262 | $15,660 | [Notes to Consolidated Financial Statements](index=23&type=section&id=Notes%20to%20Consolidated%20Financial%20Statements) The notes provide detailed information on the company's organization, accounting policies, investment valuation, debt obligations, and unfunded commitments, including the adoption of new accounting guidance - The company is managed by Sixth Street Specialty Lending Advisers, LLC, which provides investment advisory and administrative services, earning a base management fee of **1.5%** on average gross assets and a two-part incentive fee based on net investment income and capital gains[108](index=108&type=chunk)[114](index=114&type=chunk)[118](index=118&type=chunk) - Substantially all investments are valued at fair value using significant unobservable inputs (Level 3), with **$2.36 billion** of the **$2.41 billion** total investment portfolio classified as Level 3 as of September 30, 2021[75](index=75&type=chunk)[139](index=139&type=chunk) - The company utilizes a **$1.51 billion** Revolving Credit Facility and several series of unsecured notes for leverage, with total debt outstanding of **$1.12 billion** and an asset coverage ratio of **211.6%** as of September 30, 2021, well above the **150%** regulatory requirement[152](index=152&type=chunk)[153](index=153&type=chunk) - As of September 30, 2021, the company had **$191.3 million** in unfunded commitments to fund investments in current portfolio companies, primarily in the form of delayed draw term loans and revolvers[192](index=192&type=chunk) [Management's Discussion and Analysis of Financial Condition and Results of Operations](index=50&type=section&id=Item%202.%20Management's%20Discussion%20and%20Analysis%20of%20Financial%20Condition%20and%20Results%20of%20Operations) Management discusses the company's performance, investment strategy, and financial condition, highlighting its focus on direct origination of senior secured loans to U.S. middle-market companies and its strong liquidity position [Overview and Investment Framework](index=50&type=section&id=Overview%20and%20Investment%20Framework) The company is a specialty finance BDC focused on lending to U.S. middle-market companies, employing a four-tiered investment strategy emphasizing secured, floating-rate debt and leveraging its relationship with Sixth Street - The company focuses on lending to middle-market companies with annual EBITDA of **$10 million** to **$250 million**[213](index=213&type=chunk) - As of September 30, 2021, **92.5%** of the portfolio was invested in secured debt, and **98.9%** of debt investments bore floating interest rates (including hedges)[220](index=220&type=chunk)[222](index=222&type=chunk) - The company benefits from its relationship with Sixth Street, a global investment firm with over **$50 billion** AUM, which provides extensive resources and deal flow[223](index=223&type=chunk)[224](index=224&type=chunk) [Portfolio and Investment Activity](index=55&type=section&id=Portfolio%20and%20Investment%20Activity) As of September 30, 2021, the portfolio's fair value was $2.41 billion across 67 companies, with a weighted average total yield of 9.9%, and non-accrual investments significantly decreased to 0.0% of the portfolio Investment Activity (Q3 2021 vs Q3 2020, in millions) | Activity | Q3 2021 | Q3 2020 | | :--- | :--- | :--- | | Total New Investment Commitments | $105.4 | $435.5 | | Principal Amount Funded | $65.4 | $332.3 | | Principal Amount Sold/Repaid | $283.7 | $253.1 | Portfolio Quality by Fair Value | Metric | Sep 30, 2021 | Dec 31, 2020 | | :--- | :--- | :--- | | Performing Investments | 100.0% | 99.1% | | Non-Accrual Investments | 0.0% | 0.9% | | Investments Rated 1 or 2 | 96.5% | 97.5% | [Results of Operations](index=58&type=section&id=Results%20of%20Operations) For Q3 2021, total investment income remained stable at $71.2 million, but net investment income decreased to $36.5 million due to lower other income and higher expenses, while exited investments have generated a 19.1% gross IRR since inception - Q3 2021 interest income increased to **$68.6 million** from **$62.8 million** in Q3 2020, driven by a larger average portfolio and higher prepayment fees, though other income fell sharply from **$8.1 million** to **$1.8 million**[260](index=260&type=chunk) - Net expenses rose to **$34.6 million** in Q3 2021 from **$28.2 million** in Q3 2020, primarily due to higher management fees on a larger asset base and incentive fees accrued on unrealized gains[262](index=262&type=chunk) - Since inception through September 30, 2021, the company's exited investments have generated an average realized gross internal rate of return (IRR) of **19.1%** on **$5.4 billion** of invested capital[281](index=281&type=chunk) [Financial Condition, Liquidity and Capital Resources](index=63&type=section&id=Financial%20Condition%2C%20Liquidity%20and%20Capital%20Resources) The company maintains strong liquidity with $18.3 million in cash and $1.3 billion available on its Revolving Credit Facility, supported by an asset coverage ratio of 211.6%, well above regulatory requirements - As of September 30, 2021, the company had **$1.3 billion** of availability on its Revolving Credit Facility, subject to borrowing base and asset coverage limitations[293](index=293&type=chunk) Debt Obligations as of Sep 30, 2021 (in millions) | Debt Instrument | Outstanding Principal | Carrying Value | | :--- | :--- | :--- | | Revolving Credit Facility | $184.2 | $171.7 | | 2022 Convertible Notes | $142.8 | $142.2 | | 2023 Notes | $150.0 | $149.1 | | 2024 Notes | $347.5 | $352.7 | | 2026 Notes | $300.0 | $287.4 | | **Total Debt** | **$1,124.5** | **$1,103.1** | - The company's asset coverage ratio was **211.6%** as of September 30, 2021, exceeding the **150%** minimum required by the 1940 Act[291](index=291&type=chunk) [Quantitative and Qualitative Disclosures About Market Risk](index=72&type=section&id=Item%203.%20Quantitative%20and%20Qualitative%20Disclosures%20About%20Market%20Risk) The company is subject to valuation, interest rate, and currency risks, with 98.9% of debt investments at floating rates, and hypothetical interest rate changes would result in varying impacts on annual net interest income due to interest rate floors - The company's primary market risks are valuation risk for its illiquid private securities, interest rate risk due to the difference between investment yields and borrowing costs, and currency risk from foreign-denominated investments[346](index=346&type=chunk) Annualized Impact of Hypothetical Interest Rate Changes (in millions) | Basis Point Change | Net Interest Income Change | | :--- | :--- | | Up 300 basis points | $11.4 | | Up 200 basis points | $0.7 | | Up 100 basis points | ($8.4) | | Down 50 basis points | $5.0 | - The company hedges foreign currency exposure primarily by borrowing in the same local currency under its Revolving Credit Facility to create a natural hedge[354](index=354&type=chunk) [Controls and Procedures](index=74&type=section&id=Item%204.%20Controls%20and%20Procedures) Management, including the CEO and CFO, concluded that the company's disclosure controls and procedures were effective as of the end of the period, with no material changes to internal control over financial reporting during the quarter - The CEO and CFO concluded that the company's disclosure controls and procedures were effective as of September 30, 2021[356](index=356&type=chunk) - There were no material changes in internal control over financial reporting during the most recently completed fiscal quarter[357](index=357&type=chunk) PART II. OTHER INFORMATION [Legal Proceedings](index=75&type=section&id=Item%201.%20Legal%20Proceedings) The company is not currently subject to any material legal proceedings, nor is it aware of any material legal proceedings being threatened against it - As of the report date, the company is not a party to any material legal proceedings[359](index=359&type=chunk) [Risk Factors](index=75&type=section&id=Item%201A.%20Risk%20Factors) This section highlights key risks, emphasizing those associated with the company's use of leverage, BDC regulatory constraints, potential dilution from stock issuances, and conflicts of interest related to the Adviser's fee structure - The company operates under an SEC-approved **150%** minimum asset coverage ratio, permitting higher leverage (up to **2:1** debt-to-equity), which increases investment risk and magnifies potential gains or losses for stockholders[363](index=363&type=chunk)[373](index=373&type=chunk) - BDC regulations constrain operations, including a requirement to invest at least **70%** of assets in qualifying U.S. companies and limitations on raising capital, which may hinder the ability to seize attractive opportunities[365](index=365&type=chunk)[367](index=367&type=chunk) - The Adviser's management fee is based on gross assets (including leverage), and the incentive fee structure could create an incentive to make riskier investments or use more leverage, which may not always align with stockholder interests[381](index=381&type=chunk)[382](index=382&type=chunk)[385](index=385&type=chunk) [Unregistered Sales of Equity Securities and Use of Proceeds](index=79&type=section&id=Item%202.%20Unregistered%20Sales%20of%20Equity%20Securities%20and%20Use%20of%20Proceeds) There were no unregistered sales of equity securities during the period - None[387](index=387&type=chunk) [Defaults Upon Senior Securities](index=79&type=section&id=Item%203.%20Defaults%20Upon%20Senior%20Securities) Not applicable - Not applicable[388](index=388&type=chunk) [Mine Safety Disclosures](index=79&type=section&id=Item%204.%20Mine%20Safety%20Disclosures) Not applicable - Not applicable[389](index=389&type=chunk) [Other Information](index=79&type=section&id=Item%205.%20Other%20Information) Not applicable - Not applicable[390](index=390&type=chunk) [Exhibits](index=79&type=section&id=Item%206.%20Exhibits) This section lists the exhibits filed with the report, including the CEO and CFO certifications pursuant to the Sarbanes-Oxley Act of 2002 (Sections 302 and 906) - Exhibits filed include CEO and CFO certifications under Sarbanes-Oxley Sections 302 and 906[392](index=392&type=chunk)

Sixth Street Specialty Lending, Inc. (NYSE:TSLX) Q2 2021 Earnings Conference Call August 4, 2021 8:30 AM ET Company Participants Joshua Easterly - CEO Bo Stanley - President Ian Simmonds - CFO Conference Call Participants Devin Ryan - JMP Securities Finian O’Shea - Wells Fargo Robert Dodd - Raymond James Kenneth Lee - RBC Capital Markets Ryan Lynch - KBW Melissa Wedel - JPMorgan Mickey Schleien - Ladenburg Operator Good morning, and welcome to Sixth Street Specialty Lending, Inc. Second Quarter Ended June 3 ...

Quarter Ended June 30, 2021 EARNINGS PRESENTATION S I X T H S T R E E T S P E C I A L T Y L E N D I N G DISCLAIMER AND FORWARD-LOOKING STATEMENT References in this presentation ("Presentation") to "TSLX," "we," "us," "our" and "theCompany" referto Sixth Street Specialty Lending, Inc. This Presentation includes forward-looking statements about TSLX that involve substantial risks and uncertainties. These forward-looking statements are not historical facts, but rather are based on current expectations, estimat ...

PART I. FINANCIAL INFORMATION [Item 1. Financial Statements](index=4&type=section&id=Item%201.%20Financial%20Statements) This section presents the unaudited consolidated financial statements of Sixth Street Specialty Lending, Inc. for the periods ended June 30, 2021, and December 31, 2020, providing a detailed overview of the company's financial position, performance, and investment portfolio [Consolidated Balance Sheets](index=4&type=section&id=Consolidated%20Balance%20Sheets%20as%20of%20June%2030,%202021%20(Unaudited)%20and%20December%2031,%202020) The Consolidated Balance Sheets show an increase in total assets and liabilities, with a modest rise in total net assets, while Net Asset Value Per Share saw a slight decrease Key Balance Sheet Figures | Metric | June 30, 2021 (in thousands) | December 31, 2020 (in thousands) | Change (in thousands) | Percentage Change | | :----------------------------------- | :----------------------------- | :------------------------------- | :-------------------- | :------------------ | | **Assets** | | | | | | Investments at fair value | $2,569,992 | $2,298,870 | $271,122 | 11.79% | | Cash and cash equivalents | $18,494 | $13,274 | $5,220 | 39.32% | | Total Assets | $2,608,356 | $2,338,593 | $269,763 | 11.53% | | **Liabilities** | | | | | | Debt (net) | $1,304,841 | $1,110,363 | $194,478 | 17.51% | | Total Liabilities | $1,384,543 | $1,177,278 | $207,265 | 17.61% | | **Net Assets** | | | | | | Total Net Assets | $1,223,813 | $1,161,315 | $62,498 | 5.38% | | Net Asset Value Per Share | $16.85 | $17.16 | $(0.31) | -1.81% | [Consolidated Statements of Operations](index=5&type=section&id=Consolidated%20Statements%20of%20Operations%20for%20the%20three%20and%20six%20months%20ended%20June%2030,%202021%20and%202020) The Consolidated Statements of Operations show a decrease in total investment income but a significant improvement in net realized and unrealized gains, leading to a substantial increase in net assets from operations for the six-month period Key Operating Results | Metric (in thousands) | Three Months Ended June 30, 2021 | Three Months Ended June 30, 2020 | Six Months Ended June 30, 2021 | Six Months Ended June 30, 2020 | | :------------------------------------ | :------------------------------- | :------------------------------- | :----------------------------- | :----------------------------- | | Total Investment Income | $62,828 | $70,234 | $129,069 | $136,504 | | Total Expenses | $35,405 | $29,765 | $68,877 | $61,363 | | Net Investment Income | $27,388 | $39,469 | $59,697 | $73,131 | | Total Net Unrealized and Realized Gains (Losses) | $30,966 | $56,401 | $55,309 | $(30,360) | | Increase in Net Assets Resulting from Operations | $58,354 | $95,870 | $115,006 | $42,771 | | Earnings per common share—basic | $0.80 | $1.43 | $1.62 | $0.64 | | Earnings per common share—diluted | $0.74 | $1.43 | $1.50 | $0.64 | [Consolidated Schedules of Investments](index=6&type=section&id=Consolidated%20Schedules%20of%20Investments%20as%20of%20June%2030,%202021%20(Unaudited)%20and%20December%2031,%202020) The Consolidated Schedules of Investments detail a significant increase in total investments at fair value, with the portfolio heavily weighted towards first-lien debt and a majority of debt investments bearing floating interest rates with floors Investment Portfolio Composition | Investment Type | Fair Value (June 30, 2021, in thousands) | Amortized Cost (June 30, 2021, in thousands) | Fair Value (December 31, 2020, in thousands) | Amortized Cost (December 31, 2020, in thousands) | | :---------------------- | :------------------------------------- | :------------------------------------------- | :------------------------------------------- | :------------------------------------------- | | First-lien debt | $2,405,014 | $2,365,265 | $2,196,910 | $2,165,100 | | Second-lien debt | $6,285 | $5,351 | $5,037 | $4,991 | | Mezzanine debt | $16,758 | $7,108 | $10,982 | $8,223 | | Equity and other | $141,935 | $111,030 | $85,941 | $80,714 | | **Total Investments** | **$2,569,992** | **$2,488,754** | **$2,298,870** | **$2,259,028** | - As of June 30, 2021, **93.6%** of the portfolio was invested in first-lien debt, indicating a continued focus on senior secured positions[253](index=253&type=chunk) - The weighted average total yield of debt and income-producing securities at fair value decreased slightly from **10.0%** at December 31, 2020, to **9.8%** at June 30, 2021[254](index=254&type=chunk) - At June 30, 2021, **98.9%** of debt investments bore interest at floating rates (including hedges), with **99.2%** of these subject to interest rate floors, providing a hedge against inflation[228](index=228&type=chunk) [Consolidated Statements of Changes in Net Assets](index=25&type=section&id=Consolidated%20Statements%20of%20Changes%20in%20Net%20Assets%20for%20the%20three%20and%20six%20months%20ended%20June%2030,%202021%20and%202020) The Consolidated Statements of Changes in Net Assets reflect an increase in total net assets, primarily driven by net investment income, net change in unrealized gains, and common stock issuance, partially offset by dividends Changes in Net Assets | Metric (in thousands) | Six Months Ended June 30, 2021 | Six Months Ended June 30, 2020 | | :------------------------------------ | :----------------------------- | :----------------------------- | | Balance at December 31, prior year | $1,161,315 | $1,119,297 | | Net investment income | $59,697 | $73,131 | | Net change in unrealized gains (losses) | $38,701 | $(27,446) | | Net realized gains (losses) | $16,608 | $(2,914) | | Issuance of common stock, net | $85,945 | $4,828 | | Dividends declared | $(157,134) | $(92,336) | | Balance at June 30, current year | $1,223,813 | $1,082,601 | [Consolidated Statements of Cash Flows](index=27&type=section&id=Consolidated%20Statements%20of%20Cash%20Flows%20for%20the%20six%20months%20ended%20June%2030,%202021%20and%202020%20(Unaudited)) The Consolidated Statements of Cash Flows indicate a shift to net cash used in operating activities in H1 2021, primarily due to increased investment purchases, with financing activities providing significant offsetting cash Cash Flow Summary | Metric (in thousands) | Six Months Ended June 30, 2021 | Six Months Ended June 30, 2020 | | :------------------------------------ | :----------------------------- | :----------------------------- | | Net Cash Provided by (Used) in Operating Activities | $(148,476) | $319,621 | | Net Cash Provided by (Used) in Financing Activities | $153,696 | $(317,827) | | Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash | $5,220 | $1,794 | | Cash, Cash Equivalents, and Restricted Cash, End of Period | $18,494 | $15,937 | - Purchases and originations of investments, net, significantly increased to **$439.2 million** in H1 2021 from **$211.0 million** in H1 2020, contributing to the net cash used in operating activities[65](index=65&type=chunk) - Borrowings on debt increased to **$827.3 million** in H1 2021 from **$322.5 million** in H1 2020, while repayments on debt also increased to **$615.5 million** from **

Quarter Ended March 31, 2021 EARNINGS PRESENTATION S I X T H S T R E E T S P E C I A L T Y L E N D I N G DISCLAIMER AND FORWARD-LOOKING STATEMENT References in this presentation ("Presentation") to "TSLX," "we," "us," "our" and "theCompany" referto Sixth Street Specialty Lending, Inc. This Presentation includes forward-looking statements about TSLX that involve substantial risks and uncertainties. These forward-looking statements are not historical facts, but rather are based on current expectations, estima ...

Sixth Street Specialty Lending, Inc. (NYSE:TSLX) Q1 2021 Earnings Conference Call May 5, 2021 8:30 AM ET Company Participants Joshua Easterly - Chief Executive Officer Bo Stanley - President Ian Simmonds - Chief Financial Officer Michael Fishman - Vice President and Director Conference Call Participants Melissa Wedel - JPMorgan Devin Ryan - JMP Securities Ryan Lynch - KBW Finian O’Shea - Wells Fargo Robert Dodd - Raymond James Derek Hewett - Bank of America Operator Good morning, and welcome to Sixth Street ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to Commission File Number 001-36364 Sixth Street Specialty Lending, Inc. (Exact name of registrant as specified in its charter) Delaware 27-3380000 (State or ...

Sixth Street Specialty Lending, Inc. (NYSE:TSLX) Q4 2020 Earnings Conference Call February 18, 2021 8:30 AM ET Company Participants Joshua Easterly - Chairman & CEO Robert Stanley - President Ian Simmonds - Chief Compliance Officer, CFO & Secretary Michael Fishman - VP & Director Conference Call Participants Devin Ryan - JMP Securities Robert Dodd - Raymond James & Associates Jordan Wathen - Wells Fargo Securities Ryan Lynch - KBW Melissa Wedel - JPMorgan Chase & Co. Operator Good morning and welcome to Six ...

Quarter Ended December 31, 2020 EARNINGS PRESENTATION S I X T H S T R E E T S P E C I A L T Y L E N D I N G DISCLAIMER AND FORWARD-LOOKING STATEMENT References in this presentation ("Presentation") to "TSLX," "we," "us," "our" and "theCompany" referto Sixth Street Specialty Lending, Inc. This Presentation includes forward-looking statements about TSLX that involve substantial risks and uncertainties. These forward-looking statements are not historical facts, but rather are based on current expectations, est ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-36364 Sixth Street Specialty Lending, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 27-3380000 (State or other jurisdiction of incorporation or organizatio ...