The notes would be due in 2014 and are to be offered and sold to qualified institutional buyers, the company said. The offer includes an overallotment option to buy another $10 million of notes.
THQ plans to use the proceeds for general corporate purposes.
Shares fell 74 cents, or 8.8 percent, to $7.67 in after-hours trading, following the company's earnings report. The stock had closed the regular session up 9 cents at $8.41.
A service of YellowBrix, Inc.