UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

October 31, 2011

Date of Report (Date of earliest event reported)

PENDRELL CORPORATION

(Exact Name of Registrant as Specified in its Charter)

(425) 278-7100

(Registrant’s telephone number, including area code)

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:

EXPLANATORY NOTE

On October 31, 2011, Pendrell Corporation, a Delaware corporation (the “Company”) filed a Form 8-K (the “Original 8-K”) to report that its wholly-owned subsidiary, Pendrell Technologies LLC (“PTL”), completed the acquisition of 90.1% of the outstanding capital stock of ContentGuard Holdings, Inc. (“ContentGuard”) from Microsoft Corporation, a Washington corporation (“Microsoft”), Technicolor USA, Inc., a Delaware corporation (“Technicolor”), and Time Warner ContentGuard Holdings, Inc., a Delaware corporation (“Time Warner,” and collectively with Microsoft and Technicolor, the “Sellers”). Immediately after closing of PTL’s purchase of the stock, all shares of ContentGuard stock were reclassified to common stock, leaving ContentGuard with a single class of outstanding capital stock (common), held 90.1% by PTL and 9.9% by Time Warner.

The purpose of this amendment to the Original 8-K is to provide the audited financial statements of ContentGuard required by Item 9.01(a) of Form 8-K and the pro forma financial information required by Item 9.01(b) of Form 8-K, which information was excluded from the Original 8-K, in reliance upon Item 9.01(a)(4) and Item 9.01(b)(2) of Form 8-K.

The audited consolidated financial statements of ContentGuard as of December 31, 2010 and 2009 and for the years ended December 31, 2010, 2009 and 2008 and accompanying notes are included as Exhibit 99.1 hereto and are incorporated herein by reference.

The unaudited condensed consolidated financial statements of ContentGuard as of September 30, 2011 and December 31, 2010 and for the nine months ended September 30, 2011 and 2010 and accompanying notes are included as Exhibit 99.2 hereto and are incorporated herein by reference.

The following Unaudited Pro Forma Condensed Combined Financial Statements required pursuant to Item 9.01(b) of Form 8-K are included as Exhibit 99.3 hereto and are incorporated herein by reference:

* - Filed herewith

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SIGNATURE

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.

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