Ingram Micro (INGM) said late Tuesday that Ingram Holdco, an affiliate of Platinum Equity, has started a secondary offering of about 13.1 million shares.

The selling stockholder expects to grant its underwriter a 30-day option to buy nearly 2 million additional shares, the firm said.

The company also said it plans to repurchase 625,000 shares from the underwriter as part of the offering.