Hercules Capital, Inc. (NYSE: HTGC) (“Hercules” or the “Company”), will conduct its 2025 Annual Meeting of Stockholders by virtual meeting on Wednesday, June 18, 2025 at 9:00 a.m. (Eastern Time). The proxy statement for the meeting was filed on April 24, 2025 and mailed to stockholders of record as of April 17, 2025.

2025 Annual Meeting of Stockholders

June 18, 2025 at 9:00 a.m. Eastern Time

Virtual Meeting via Internet: http://www.virtualshareholdermeeting.com/HTGC2025

Matters to be voted on include: 1) election of three directors, 2) an advisory vote on the compensation of the Company’s named executive officers, 3) authorization of the Company to sell or issue shares of its common stock at a price below its then-current NAV per share and 4) ratification of the Company’s independent public accounting firm.

About Hercules Capital, Inc.

Hercules Capital, Inc. (NYSE: HTGC) is the leading and largest specialty finance company focused on providing senior secured venture growth loans to high-growth, innovative venture capital-backed companies in a broad variety of technology and life sciences industries. Since inception (December 2003), Hercules has committed more than $22 billion to over 680 companies and is the lender of choice for entrepreneurs and venture capital firms seeking growth capital financing. Companies interested in learning more about financing opportunities should contact info@htgc.com or call 650.289.3060.

Hercules, through its wholly owned subsidiary business, Hercules Adviser LLC (the “Adviser Subsidiary”), also maintains an asset management business through which it manages investments for external parties (“Adviser Funds”). The Adviser Subsidiary is registered as an investment adviser under the Investment Advisers Act of 1940.

Hercules’ common stock trades on the New York Stock Exchange (NYSE) under the ticker symbol “HTGC.” In addition, Hercules has one retail bond issuance of 6.25% Notes due 2033 (NYSE: HCXY).

Additional Information

This communication may be deemed solicitation material in respect of the proposals described above (the “proposals”). In connection with the proposals, the Company has filed, and intends to file, relevant materials with the Securities and Exchange Commission (the “SEC”). Promptly after filing its definitive proxy statements with the SEC, the Company will mail the definitive proxy statements and proxy cards to each stockholder entitled to vote at the stockholder meetings relating to such matters. STOCKHOLDERS OF THE COMPANY ARE URGED TO READ THESE MATERIALS (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO), AND ANY OTHER RELEVANT DOCUMENTS THAT THE COMPANY WILL FILE WITH THE SEC WHEN THEY BECOME AVAILABLE, BECAUSE THESE MATERIALS WILL CONTAIN IMPORTANT INFORMATION ABOUT THE COMPANY AND THE PROPOSALS. The preliminary proxy statement, the definitive proxy statements and other relevant materials (when they become available), and any other documents filed by the Company with the SEC, may be obtained free of charge at the SEC’s website (http://www.sec.gov), at the Company’s website (http://www.htgc.com), or by writing to Hercules Capital, Inc. c/o Kiersten Zaza Botelho, Secretary, 31 St. James Avenue, Suite 1005, Boston, Massachusetts, 02116 (telephone number 617-314-9973).

The Company and its directors and officers may be deemed to be participants in the solicitation of proxies from the Company’s stockholders with respect to the proposals. Information about the Company’s directors and officers, as well as the identity of other potential participants, and their respective direct or indirect interests in such matters, by security holdings or otherwise, are set forth in the preliminary proxy statement and will be set forth in the definitive proxy statements and other materials to be filed with SEC.

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