BOULDER - LinkSmart Inc., a text link software platform company, raised $5 million through equity investment, according to a regulatory filing with the U.S. Securities and Exchange Commission.

Six investors bought equity in the firm, starting April 25, according to the filing. Chief executive Peter Sheinbaum, who started the company in Boulder in 2009, was not immediately available for comment.

LinkSmart is billed as a "stealth startup" backed by the venture capital firms Foundry Group in Boulder and Sutter Hill Ventures and Costanoa Venture Capital, both in Palo Alto, California, according to the TechStars business incubator website. TechStars has an office in Boulder.

Sheinbaum previously was CEO of DailyCandy Inc., an online fashion and culture website. DailyCandy was sold to Comcast Interactive Media in 2008, according to information on the TechStars website.

LinkSmart software helps publishers analyze Internet user behavior on websites. Specifically, the software focuses on highlighted links in content on websites.

Foundry Group principal Seth Levine is a director of LinkSmart, as is Greg Sands, a Costanoa principal, according to the filing. Officers of the company include Sheinbaum, Greg Keller, Emmanuel Puentes and Perry Quinn.