The 6 million shares of Wesco Aircraft Holdings Inc. being offered by the Carlyle Group have been priced at $18.87 per share, the company announced Thursday.

Affiliates of the Washington, D.C. private equity firm also could sell an additional 900,000 shares in the Valencia aerospace parts supplier should the offering sell out.

If all 6.9 million shares sell, that would leave Carlyle with a 31.1 percent stake in Wesco. In May, Carlyle sold 17.25 million shares in Wesco priced at $16.

The offering is expected to close and settle on Aug. 13 with Barclays PLC acting as the sole underwriter. Wesco is not receiving any proceeds from the sale.

Carlyle bought a majority stake in the company in 2006 when it was privately held, and took it public in July 2011, raising $315 million in the initial public offering.

Shares of Wesco rose 80 cents, or more than 4 percent, to close at $20.25 on the New York Stock Exchange.