TSLX Sixth Street Specialty Lending Inc

Prior to February 1, 2029 (the “Par Call Date”), equal to the greater of the following amounts, plus, in each case, accrued and unpaid interest thereon to the redemption date:

•   (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon, discounted to the redemption date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 40 basis points less (b) interest accrued to the date of redemption; and

•   100% of the principal amount of the Notes to be redeemed;

provided, however, that if the Issuer redeems any Notes on or after the Par Call Date, the redemption price for the Notes will be equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest thereon to the date of redemption.

BofA Securities, Inc.

Goldman Sachs & Co. LLC

J.P. Morgan Securities LLC

SMBC Nikko Securities America, Inc.

Morgan Stanley & Co. LLC

RBC Capital Markets, LLC

HSBC Securities (USA) Inc.

Wells Fargo Securities, LLC

Citigroup Global Markets Inc.

Truist Securities, Inc.

Mizuho Securities USA LLC

MUFG Securities Americas Inc.

Keefe, Bruyette & Woods, Inc.

Oppenheimer & Co. Inc.

ICBC Standard Bank Plc

Raymond James & Associates, Inc.

B. Riley Securities, Inc.

Citizens JMP Securities, LLC

Hovde Group, LLC

Ladenburg Thalmann & Co. Inc.

R. Seelaus & Co., LLC

Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

The Issuer expects that delivery of the Notes will be made to investors on or about January 16, 2024, which will be the fifth business day following the date hereof. Under Rule 15c6-1 under the Securities Exchange Act of 1934, as amended, trades in the secondary market are required to settle in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade Notes on the date hereof or the next succeeding two business days will be required by virtue of the fact that the Notes initially settle in T+5, to specify an alternate settlement arrangement at the time of any such trade to prevent a failed settlement. Purchasers of the Notes who wish to trade the Notes on the date hereof or the next succeeding two business days should consult their advisors.

ICBC Standard Bank Plc is restricted in its U.S. securities dealings under the United States Bank Holding Company Act and may not underwrite, subscribe, agree to purchase or procure purchasers to purchase notes that are offered or sold in the United States. Accordingly, ICBC Standard Bank Plc shall not be obligated to, and shall not, underwrite, subscribe, agree to purchase or procure purchasers to purchase notes that may be offered or sold by other underwriters in the United States. ICBC Standard Bank Plc shall offer and sell the Notes constituting part of its allotment solely outside the United States.