Hercules Technology Growth Capital, Inc. (NYSE: HTGC) ("Hercules") announced today that it is offering 7,000,000 shares of common stock pursuant to an effective shelf registration statement in an underwritten public offering. Hercules plans to grant the underwriters for the offering an option to purchase up to an additional 1,050,000 shares of common stock. Citigroup and Wells Fargo Securities are acting as joint book-running managers in this offering. Aegis Capital Corp, BB&T Capital Markets, a division of BB&T Securities, LLC, Maxim Group LLC and National Securities Corporation are acting as co-managers in this offering. The securities described above are being offered by Hercules pursuant to a shelf registration statement previously filed with and declared effective by the Securities and Exchange Commission (the "SEC") on December 18, 2012. A preliminary prospectus supplement related to the offering has been filed with the SEC and is available on the SEC's web site at http://www.sec.gov. Copies of the preliminary prospectus supplement relating to these securities may be obtained from Citigroup, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717 (tel: (800) 831-9146); Wells Fargo Securities, 375 Park Avenue, 4th Floor, New York, New York 10152, Attn: Equity Syndicate or by e-mailing firstname.lastname@example.org. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of, the shares 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. About Hercules Technology Growth Capital, Inc.: Hercules Technology Growth Capital, Inc. (NYSE: HTGC) (“Hercules”) is the leading specialty finance company focused on providing senior secured loans to venture capital-backed companies in technology-related markets, including technology, biotechnology, life science and cleantech industries at all stages of development. Since inception (December 2003), Hercules has committed more than $3.4 billion to over 220 companies and is the lender of choice for entrepreneurs and venture capital firms seeking growth capital financing.