Triangle Capital Corporation (NYSE:TCAP) has launched a stock offering expected to net $67 million that the specialty finance company will use to make more investments in businesses.

The offering of 3.7 million shares was priced at $19 per share. Underwriters have a 30-day option to purchase up to 555,000 additional shares to cover any overallotments. The offering is subject to customary closing conditions and is expected to close on February 13.

Raleigh-based Triangle Capital focuses on lower middle market companies, which the firm defines as companies with revenues between $10 million and $100 million and earnings between $3 and $20 million.

Triangle Capital invests in companies in a wide range of industries; though the firm doesn’t target pharmaceutical or medical device developers it does have some healthcare investments. Last year, the firm pumped $11.5 million into Chicago-based Home Health Physicians, a company that provides healthcare to patients unable to travel to a doctor’s office.

Other Triangle Capital portfolio companies in the healthcare space include TBG Anesthesia Management, a Midwest-based physician management company that provides contracted outsourced anesthesiology services to hospitals and medical centers and Genapure, a Florida-based provider of lab testing services whose clients include pharmaceutical firms. Through the third quarter of 2011, Triangle Capital’s investments in 60 portfolio companies was valued at $464.4 million.

Underwriters for the stock offering are Morgan Stanley & Co., Morgan Keegan & Company, Robert W. Baird & Co., BB&T Capital Markets, a division of Scott & Stringfellow, Janney Montgomery Scott LLC, JMP Securities, and Sterne, Agee & Leach.

Get the latest news alerts: Follow WRAL Tech Wire at Twitter.