Ownership profile
Who owns Mattress Firm?
Mattress Firm is a wholly-owned subsidiary of Somnigroup International Inc. (NYSE: SGI), a publicly traded bedding company formerly known as Tempur Sealy, which completed its ~$5.1 billion acquisition of Mattress Firm on February 5, 2025; Mattress Firm was previously PE-backed but has no current private equity owner.
Ownership profile
Mattress Firm
Mattress Firm Group Inc. (wholly-owned subsidiary of Somnigroup International Inc.)
Evidence (8)
Somnigroup International Inc. trades on the New York Stock Exchange under ticker SGI, confirming it is a publicly listed corporation.
https://www.cnbc.com/quotes/SGITempur Sealy International completed the acquisition of Mattress Firm Group Inc. on February 5, 2025, paying approximately $5.1 billion net of cash acquired.
https://www.sec.gov/Archives/edgar/data/0001206264/000120626425000059/exhibit993unauditedproform.htmConcurrent with the acquisition close, Tempur Sealy announced it would rename itself Somnigroup International Inc., effective February 18, 2025, with Mattress Firm operating as a decentralized business unit under Somnigroup.
https://somnigroup.com/newsroom/news-details/2025/Tempur-Sealy-Successfully-Completes-Acquisition-of-Mattress-Firm/default.aspxPitchBook classifies Mattress Firm's financing status as 'Formerly PE-Backed' and its ownership status as 'Acquired/Merged (Operating Subsidiary)' with parent company Somnigroup International.
https://pitchbook.com/profiles/company/10447-39Somnigroup (formerly Tempur Sealy) identifies Mattress Firm as one of its three operating segments in its financial disclosures.
https://www.stocktitan.net/overview/SGI/In October 2002, an affiliate of Sun Capital Partners acquired Mattress Firm; in January 2007, J.W. Childs Associates (another PE firm) acquired it from Sun Capital.
https://en.wikipedia.org/wiki/Mattress_FirmMattress Firm launched an IPO in 2011 (trading as NASDAQ: MFRM), then was taken private by Steinhoff International in 2016 and subsequently filed for bankruptcy in 2018 before being acquired by Tempur Sealy/Somnigroup in 2025.
https://en.wikipedia.org/wiki/Mattress_FirmMattress Firm Group Inc. filed an S-1 registration statement with the SEC in January 2022, reflecting an attempted IPO that did not ultimately complete before the Tempur Sealy acquisition.
https://www.sec.gov/Archives/edgar/data/1883331/000110465922002319/tm2127589-13_s1.htmWhat's uncertain
- Mattress Firm's PE ownership history is complex: Sun Capital Partners (2002–2007), J.W. Childs Associates (2007–2011 IPO), Steinhoff International (2016–2018 bankruptcy), then operated independently post-bankruptcy before Tempur Sealy/Somnigroup acquisition in 2025. All PE involvement is confirmed exited.
- The current parent, Somnigroup International Inc. (NYSE: SGI), is itself a publicly traded company with no identified PE controlling shareholder; its institutional shareholder composition was not independently verified in this investigation.
- Mattress Firm's legal operating entity name is 'Mattress Firm Group Inc.' per SEC filings; the consumer-facing brand name is simply 'Mattress Firm'.
- Divestiture of 73 Mattress Firm stores and Sleep Outfitters subsidiary to Mattress Warehouse was announced for Q2 2025 completion; final status of that divestiture was not verified in this investigation.