QXO (QXO) said late Wednesday it plans to commence an offering of $500 million of common shares.

The company intends to grant the underwriters an option to purchase up to an additional $75 million of shares.

The building products distributor said it will use the proceeds to partially finance its planned acquisition of Beacon Roofing Supply.

The company had recently signed a definitive agreement to acquire Beacon Roofing for approximately $11 billion. The deal is expected to close in the week of April 28.