Cheesecake Factory Inc. said Friday that it has increased its buyback program by 5 million shares. The casual dining chain has already repurchased $250 million of its stock this year. The Calabasas-based restaurant chain said its board approved the increase, which will bring the number of shares it can purchase to 21 million. Cheesecake Factory said there’s no expiration date tied to the buyback.

Guidance Software Inc. named Victor Limongelli chief executive officer, succeeding John Colbert. The Pasadena-based company also named Limongelli to the software company’s board. Guidance shares fell 1.5 percent, to $12.60 in afternoon trading Friday on the Nasdaq.