Hercules Capital, Inc. (NYSE: HTGC) (“Hercules,” “Hercules Capital,” or the “Company”), announced that it has priced an underwritten public offering of $400.0 million in aggregate principal amount of 6.70% notes due October 2029 (the “Notes”). The closing of the transaction is subject to customary closing conditions and the Notes are expected to be delivered and paid for on October 8, 2026.

The Notes are unsecured and bear interest at a rate of 6.70% per year, payable semiannually and will mature on October 8, 2029 and may be redeemed in whole or in part at any time or from time to time at the Company’s option at par, plus a “make whole” premium, if applicable.

The Company expects to use the net proceeds from this offering to (i) repay outstanding unsecured indebtedness and/or secured indebtedness under its existing financing arrangements, (ii) fund investments in accordance with its investment objectives, and (iii) for other general corporate purposes.

Goldman Sachs & Co. LLC, SMBC Nikko Securities America, Inc. and MUFG Securities Americas Inc. are acting as joint book-running managers of this offering. Citizens JMP Securities, LLC, DZ Financial Markets LLC, RBC Capital Markets, LLC, R. Seelaus & Co., LLC, Synovus Securities, Inc., Wedbush Securities Inc. and Zions Direct, Inc. are acting as co-managers.

The offering may be made only by means of a preliminary prospectus supplement and an accompanying prospectus. Copies of the preliminary prospectus supplement may be obtained from Goldman Sachs & Co. LLC, Prospectus Department, 200 West Street, New York, New York 10282, or email: prospectus-ny@ny.email.gs.com, or telephone: 1-866-471-2526, or SMBC Nikko Securities America, Inc., 277 Park Avenue, New York, New York 10172, Attention: Debt Capital Markets – Transaction Management, or email: prospectus@smbcnikko-si.com, or telephone: 1-888-868-6856.

Investors are advised to carefully consider the investment objectives, risks, charges and expenses of the Company before investing. The pricing term sheet dated October 5, 2026, the preliminary prospectus supplement dated October 5, 2026, and the accompanying prospectus dated December 11, 2024, each of which has been filed with the SEC, contain this and other information about the Company and should be read carefully before investing.

The information in the pricing term sheet, the preliminary prospectus supplement, the accompanying prospectus and this press release is not complete and may be changed. The pricing term sheet, the preliminary prospectus supplement, the accompanying prospectus and this press release do not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of, the Notes in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.