Somnigroup International Finalizes Mattress Firm Acquisition, Rebrands and Restructures Leadership Somnigroup International, formerly Tempur Sealy, has completed its $5 billion acquisition of Mattress Firm and rebranded under the new name. The company announced a revised executive structure, with Scott Vollet no longer classified as a Section 16 insider, reflecting a broader strategic realignment post-acquisition and efforts to streamline leadership.12