Mattress Firm Group Inc. Files Registration Statement on Form S-1 for Proposed Initial Public Offering of Its Common Stock Houston, Texas – January 7, 2022 – Mattress Firm Group Inc. (“Mattress Firm”) today announced that it has filed a registration statement on Form S-1 with the Securities and Exchange Commission (the “SEC”) for a proposed initial public offering of its common stock. The shares of common stock to be sold in the offering will be sold by existing stockholders of Mattress Firm. The number of shares to be offered and the price range for the offering have not yet been determined. Mattress Firm intends to apply to list its common stock on the New York Stock Exchange, subject to notice of official issuance, under the symbol “MFRM.” Goldman Sachs & Co. LLC, Barclays and Jefferies are acting as lead book-running managers for the proposed offering. UBS Investment Bank, Guggenheim Securities, Piper Sandler and Truist Securities are acting as book-running managers for the proposed offering. A registration statement relating to these securities has been filed with the SEC but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities, and shall not constitute an offer, solicitation, or sale in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of that jurisdiction. Any offers, solicitations or offers to buy, or any sales of securities will be made in accordance with the registration requirements of the Securities Act of 1933, as amended. The proposed offering will be made only by means of a prospectus. Once available, a copy of the preliminary prospectus related to the offering may be obtained by contacting Goldman Sachs & Co. LLC, Attention: Prospectus Department at 200 West Street, New York, New York 10282, by telephone at 1-866-471-2526 or by e-mail at email@example.com; Barclays Capital Inc., c/o Broadridge Financial Solutions at 1155 Long Island Avenue, Edgewood, New York 11717, by telephone at 1-888-603-5847 or by email at firstname.lastname@example.org; or Jefferies LLC, Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, 2nd Floor, New York, New York 10022, by telephone at (877) 821-7388, or by email at email@example.com. About Mattress Firm: For the past 90 years, Mattress Firm has made it easy to get a great night’s sleep by providing our customers an expertly curated collection of quality mattresses from the best brands. Today, with more than 2,300 neighborhood stores, we strive to match every customer with their perfect mattress at the perfect price. Our Sleep Experts™ help more than 3 million people a year find the right solution for their sleep needs. Our selection of mattresses and bedding accessories include leading brands such as Beautyrest®, Nectar®, Sealy®, Serta®, Simmons®, Sleepy’s® Stearns & Foster®, Tempur-Pedic®, Tuft & Needle®, tulo®, and Purple®. We also offer customers Sleep.com as a go-to resource for learning how to sleep better and feel better. Committed to serving our communities, the Mattress Firm Foster Kids program, in partnership with the Ticket to Dream Foundation, joined forces with local foster care non-profit partners to help children in foster care get better sleep so they can shape a better future. For more information, visit http://www.mattressfirm.com.