Slate Pharmaceuticals, a small private drug company that markets a testosterone medication, is moving from Research Triangle Park to the CapTrust Tower at North Hills.

Slate officials said in a release that the move will double its footprint, although the company declined to disclose the exact square footage it will occupy.

The 275,000-square-foot, 17-story CapTrust Tower was developed by Kane Realty and Duke Realty.

It opened in 2009 and is now 71 percent leased.

Slate, which was founded in May 2006, markets Testopel, a long-acting testosterone medication that has been approved by the Food and Drug Administration.

The company's founder and CEO, Bob Whitehead, was previously president and chief operating officer of Auxilium Pharmaceuticals, a company that focused on urology and men’s health.