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): September 4, 2017

Rockwell Collins, Inc.

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code: (319) 295-1000

(Former name or former address if changed since last report)

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:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

On September 4, 2017, Rockwell Collins, Inc. (“Rockwell Collins”) and United Technologies Corporation (“United Technologies”) issued a joint press release announcing the entry into a merger agreement providing for the acquisition of Rockwell Collins by United Technologies on the terms and conditions contained therein. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Safe Harbor Statement

This communication contains statements, including statements regarding the proposed acquisition of Rockwell Collins by United Technologies, that are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those projected as a result of certain risks and uncertainties, including but not limited to: the ability of Rockwell Collins and United Technologies to receive the required regulatory approvals for the proposed acquisition of Rockwell Collins by United Technologies (and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the transaction) and approval of Rockwell Collins’ shareowners and to satisfy the other conditions to the closing of the transaction on a timely basis or at all; the occurrence of events that may give rise to a right of one or both of the parties to terminate the merger agreement; negative effects of the announcement or the consummation of the transaction on the market price of United Technologies’ and/or Rockwell Collins’ common stock and/or on their respective businesses, financial conditions, results of operations and financial performance; risks relating to the value of the United Technologies’ shares to be issued in the transaction, significant transaction costs and/or unknown liabilities; the possibility that the anticipated benefits from the proposed transaction cannot be realized in full or at all or may take longer to realize than expected; risks associated with third party contracts containing consent and/or other provisions that may be triggered by the proposed transaction; risks associated with transaction-related litigation; the possibility that costs or difficulties related to the integration of Rockwell Collins’ operations with those of United Technologies will be greater than expected; the outcome of legally required consultation with employees, their works councils or other employee representatives; and the ability of Rockwell Collins and the combined company to retain and hire key personnel. There can be no assurance that the proposed acquisition or any other transaction described above will in fact be consummated in the manner described or at all. For additional information on identifying factors that may cause actual results to vary materially from those stated in forward-looking statements, see the reports of United Technologies and Rockwell Collins on Forms 10-K, 10-Q and 8-K filed with or furnished to the SEC from time to time. These forward-looking statements are made only as of the date hereof and the company assumes no obligation to update any forward-looking statement.

Additional Information

In connection with the proposed transaction, United Technologies will file a registration statement on Form S-4, which will include a document that serves as a prospectus of United Technologies and a proxy statement of Rockwell Collins (the “proxy statement/prospectus”), and each party will file other documents regarding the proposed transaction with the SEC. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. A definitive proxy statement/prospectus will be sent to Rockwell Collins’ shareowners. Investors and security holders will be able to obtain the registration statement and the proxy statement/prospectus free of charge from the SEC’s website or from United Technologies or Rockwell Collins. The documents filed by United Technologies with the SEC may be obtained free of charge at United Technologies’ website at www.utc.com or at the SEC’s website at www.sec.gov. These documents may also be obtained free of charge from United Technologies by requesting them by mail at UTC Corporate Secretary, 10 Farm

Springs Road, Farmington, CT, 06032, by telephone at 1-860-728-7870 or by email at corpsec@corphq.utc.com. The documents filed by Rockwell Collins with the SEC may be obtained free of charge at Rockwell Collins’ website at www.rockwellcollins.com or at the SEC’s website at www.sec.gov. These documents may also be obtained free of charge from Rockwell Collins by requesting them by mail at Investor Relations, 400 Collins Road NE, Cedar Rapids, Iowa 52498, or by telephone at 1-319-295-7575.

Participants in the Solicitation

United Technologies and Rockwell Collins and their respective directors and executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about United Technologies’ directors and executive officers is available in United Technologies’ proxy statement dated March 10, 2017, for its 2017 Annual Meeting of Shareowners. Information about Rockwell Collins’ directors and executive officers is available in Rockwell Collins’ proxy statement dated December 14, 2016, for its 2017 Annual Meeting of Shareowners and in Rockwell Collins’ Forms 8-K dated January 10, 2017 and April 13, 2017. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the proxy statement/prospectus and other relevant materials to be filed with the SEC regarding the acquisition when they become available. Investors should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from United Technologies or Rockwell Collins as indicated above.

No Offer or Solicitation

This communication shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

(d) Exhibits.

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, thereunto duly authorized.

EXHIBIT INDEX