UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 11, 2008

SigmaTel, Inc.

(Exact name of registrant as specified in its charter)

Delaware

000-50391

74-2691412

(State or other jurisdiction

of incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

1601 S. MoPac Expressway

Suite 100

Austin, Texas 78746

(Address of principal executive offices including zip code)

Registrant’s telephone number, including area code:

(512) 381-3700

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.

Other Events.

On April 11, 2008, SigmaTel, Inc. (“SigmaTel”) issued a press release in which it announced that the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, with respect to SigmaTel’s proposed merger with a wholly owned subsidiary of Freescale Semiconductor, Inc., expired on April 10, 2008 at 11:59 p.m. Eastern time. A copy of the press release is attached hereto as Exhibit 99.1.

Item 9.01.

Financial Statements and Exhibits.

(c)

Exhibits

99.1

Press Release of SigmaTel, Inc. dated April 11, 2008.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


	SIGMATEL, INC.

April 11, 2008	By:	/s/ R. Scott Schaefer
	Name:	R. Scott Schaefer
	Title:	Vice President of Finance and Chief Financial Officer

SIGMATEL, INC.

EXHIBIT INDEX

EXHIBIT

NUMBER

DESCRIPTION

99.1

Press Release of SigmaTel, Inc. dated April 11, 2008.

SIGMATEL INC 8-K