Harris & Harris Group Inc.

PRESS RELEASE

HARRIS & HARRIS GROUP, INC.	SEPTEMBER 9, 2005
111 WEST 57TH STREET
NEW YORK, NEW YORK 10019
NASDAQ/NMS SYMBOL: TINY
CONTACT: CHARLES E. HARRIS
TEL. NO. (212) 582-0900

HARRIS & HARRIS GROUP, INC. ANNOUNCES FULL EXERCISE OF OVER-ALLOTMENT OPTION

Harris & Harris Group, Inc. (NASDAQ: TINY) today announced that the underwriters of the Company's recent offering of its shares of common stock have exercised in full their over-allotment option to purchase an additional 457,500 shares of common stock at a public offering price of $11.25 per share. Upon the closing of the purchase of the over-allotment shares on September 14, 2005, a total of 3,507,500 shares of common stock will have been sold in the offering, resulting in estimated net proceeds of approximately $36,751,812 after deducting underwriting discounts and commissions and estimated offering expenses payable by the Company. All of the shares of common stock were offered by Harris & Harris Group pursuant to an effective shelf registration statement filed with the Securities and Exchange Commission.

ThinkEquity Partners LLC acted as the sole book runner for the offering. Punk, Ziegel & Company acted as co-manager for the offering.

This press release is for informational purposes only and shall not constitute an offer to sell or the solicitation of an offer to buy any of the securities, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. A prospectus supplement and prospectus relating to these securities have been filed with the Securities and Exchange Commission, copies of which may be obtained from ThinkEquity Partners LLC, 600 Montgomery Street, San Francisco, CA 94111 (Telephone number 415-249-2900) or Punk, Ziegel & Company, 520 Madison Avenue, 4th Floor, New York, NY 10022 (Telephone number 212-308-9494).

Harris & Harris Group is a publicly traded venture capital company that now makes initial investments exclusively in tiny technology, including nanotechnology, microsystems and microelectromechanical systems (MEMS). The Company's last 24 initial private equity investments have been in tiny-technology enabled companies. As of today, the Company has 20,298,845 shares of common stock outstanding not including the shares to be issued in connection with the over-allotment option.

Detailed information about Harris & Harris Group, Inc., and its holdings can be found on its website at http://www.TinyTechVC.com.

This press release may contain statements of a forward-looking nature relating to future events. These forward-looking statements are subject to the inherent uncertainties in predicting future results and conditions. These statements reflect the Company's current beliefs, and a number of important factors could cause actual results to differ materially from those expressed in this press release. Please see the Company's Registration Statement on Form N-2 (File No. 333-112862) and Annual Report on Form 10-K for the fiscal year ended December 31, 2004, each filed with the Securities and Exchange Commission, for a more detailed discussion of the risks and uncertainties associated with the Company's business, including but not limited to the risks and uncertainties associated with venture capital investing and other significant factors that could affect the Company's actual results. Except as otherwise required by Federal securities laws, Harris & Harris Group, Inc.�, undertakes no obligation to update or revise these forward-looking statements to reflect new events or uncertainties. The reference to the website www.TinyTechVC.com has been provided as a convenience, and the information contained on such website is not incorporated by reference into this press release.