UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 1)¹

Sealy Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

812139301

(CUSIP Number)

H Partners Management, LLC

888 Seventh Avenue, 29th Floor

New York, New York 10019

Attn: Rehan Jaffer

(212) 265-4200

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

January 6, 2012

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box     x.

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No 812139301

CUSIP No 812139301

CUSIP No 812139301

CUSIP No 812139301

This constitutes Amendment No. 1 to the statement on Schedule 13D (the “Amendment No. 1”) filed jointly on behalf of H Partners Management, the Partnership, H Partners Capital and Rehan Jaffer, dated and filed November 7, 2011 (the “Original Filing”), relating to the common stock, $0.01 par value per share, of Sealy Corporation (the “Company”). The Company’s principal executive office is located at Sealy Drive, One Office Parkway, Trinity, North Carolina 27370. This amendment is being filed to amend and restate Item 4. Unless specifically amended or modified hereby, the disclosure set forth in the Original Filing shall remain unchanged.

Item 4. Purpose of Transaction.

Item 4 is hereby amended and restated in its entirety as follows:

The Shares covered by this Schedule 13D were acquired by the Reporting Persons for investment purposes in the ordinary course of business. The Reporting Persons now believe that it would be in their best interest, and those of other shareholders, to attempt to influence the governance and business strategies of the Company. The Reporting Persons intend to engage in discussions with members of the Board of Directors and management of Sealy from time to time regarding Sealy and potential means for enhancing shareholder value, including through shareholder proposals. The Reporting Persons have determined to seek representation on the Board of Directors of Sealy.

No Reporting Person has any present plan or proposal which would relate to or result in any of the matters set forth in subparagraphs (a)—(j) of Item 4 of Schedule 13D except as set forth herein or such as would occur upon completion of any of the actions discussed above. The Reporting Persons intend to review their investments in the Issuer on a continuing basis. Depending on various factors, the Reporting Persons may in the future take such actions with respect to their investments in the Issuer as they deem appropriate including, without limitation, purchasing or selling shares of common stock or preferred stock or other securities of Sealy or changing their intentions with respect to any and all matters referred to in Item 4.

Item 7. Material to be Filed as Exhibits.

SIGNATURES

After reasonable inquiry and to the best of such Reporting Person’s knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated January 10, 2012