ACAS American Capital, Ltd.

Goldsmith Agio Helms is pleased to announce the completed sale of its client, 3SI Security Systems, Inc. ("3SI" or the "Company"), a portfolio company of American Capital Strategies, Ltd. (Nasdaq:ACAS), to Stirling Square Capital Partners ("Stirling Square"), a pan-European mid-market private equity firm based in London, England. 3SI is a leading designer, manufacturer, and marketer of electronic security systems for cash protection. The Company's products protect currency over all critical aspects of the cash-handling chain, including the bank teller's drawer, in automatic-teller machines, in the vault, and in across the pavement applications. 3SI is based in Exton, Pennsylvania and has operations in Europe. HIGHLIGHTS FROM THE TRANSACTION Multiple potential acquirers expressed strong interest in 3SI. Thomas Oxenfeld, president and CEO of 3SI stated, "3SI has established an excellent reputation in the security market and is a clear market leader. We have a strong portfolio of products and are continually introducing new and effective solutions to stay ahead of crime. I am excited about working together with Stirling Square in ensuring the next stage in 3SI's growth." Bolaji Odunsi, Partner at Stirling Square said, "3SI has an experienced and dynamic management team, strong customer relationships and an extensive line of patented and proprietary products. We see great opportunities for the company in Europe and further afield." Martin Calderbank, Partner at Stirling Square commented "We look forward to working with Tom and his team to capitalize on the opportunities ahead, in particular backing new product development and international growth. This deal is a classic example of the investments Stirling Square makes, buying and building proven market leaders." "American Capital is gratified to have assisted in the growth of 3SI at the board level during our investment," said American Capital Managing Director Frank Do. "We enjoyed working along side such a high caliber management team and wish them and Stirling Square all the best in the future." James Frommelt, Managing Director at Goldsmith Agio Helms, commented, "The acquisition of 3SI provides Stirling Square with one of the leading players in the security industry. The Company features a very talented management team and provides an extremely attractive platform for future growth. We firmly believe the Company's partnership with Stirling Square will be as successful as the Company's partnership with American Capital Strategies." THE COMPANY 3SI Security Systems, Inc. (www.3sisecurity.com) is a leading designer, manufacturer, and marketer of electronic security systems for cash protection. The Company's products protect currency over all critical aspects of the cash-handling chain, including the bank teller's drawer, in automatic-teller machines, in the vault, and in across the pavement applications. 3SI's flagship products are the SecurityPac(R) Electronic Protection System, which consists of bundles of real currency containing a combination of dye, tear gas, and electronics, the Scorpion(TM) Cassette Protection System, which is designed to protect cash in transit and inside automatic-teller machines, and the ESP(R) Electronic Satellite Pursuit, a tracking product based on high-sensitivity global-positioning system ("GPS") technology. The Company's customer base consists of leading financial institutions in North America and Europe. 3SI is based in Exton, Pennsylvania and has operations in Europe. THE BUYER Stirling Square Capital Partners (www.stirlingsquare.com) is a pan-European mid-market private equity firm with $250 million of committed capital from Citigroup. Stirling Square Capital Partners provides private equity investment to European companies with enterprise values in the EUR 50 million - EUR 500 million range, operating across a broad range of sectors and industries. Target companies are sector leaders with international aspirations, defensible competitive advantages, and talented management teams capable of executing a clearly defined value creation strategy. THE SELLER American Capital Strategies, Ltd. (Nasdaq:ACAS) is a publicly traded buyout and mezzanine fund with capital resources of approximately $7 billion. American Capital invests in and sponsors management and employee buyouts, invests in private equity buyouts, provides capital directly to early stage and mature private and small public companies and through its asset management business is a manager of debt and equity investments in private companies and commercial loan obligations. American Capital provides senior debt, mezzanine debt and equity to fund growth, acquisitions, recapitalizations and securitizations. American Capital invests up to $300 million per transactions. ABOUT GOLDSMITH AGIO HELMS Goldsmith Agio Helms (www.agio.com) provides sophisticated corporate finance advice and investment banking services to middle-market businesses. The firm's services include mergers and acquisitions, private placements of debt and equity, distressed advisory and restructuring, and valuations and fairness opinions. The firm operates internationally from its offices in Minneapolis, New York, Chicago, Los Angeles, and London. If you would like more information about this transaction, contact James Frommelt, jfrommelt@agio.com, at 612-339-0500.