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): February 10, 2015

PAR PHARMACEUTICAL COMPANIES, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (201) 802-4000

Former name or former address, if changed since last report: N/A

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:

This Current Report on Form 8-K (this “Form 8-K”) is being furnished to disclose certain information (the “Selected Information”), including certain estimated results of operations, that Par Pharmaceutical Companies, Inc. (the “Company”), will furnish to prospective debt financing sources in connection with a potential $425 million incremental term loan financing.

The disclosure in Item 2.02 above is hereby incorporated by reference into this Item 7.01.

The information contained in Item 2.02 and Item 7.01 of this Form 8-K, including the exhibit hereto, is furnished pursuant to Item 2.02 and Item 7.01 of Form 8-K and shall not in either case be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liability under that Section and shall not be deemed incorporated by reference into any filing by the Company under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing.

The Selected Information, contained in Exhibit 99.1 to this Form 8-K, is summary information that is intended to be considered in the context of the Company’s Securities and Exchange Commission (“SEC”) filings and other public announcements that the Company may make, by press release or otherwise, from time to time. The Company undertakes no duty or obligation to publicly update or revise the information contained in Exhibit 99.1, although it may do so from time to time as its management believes is warranted. Any such updating may be made through the filing of other reports or documents with the SEC, through press releases or through other public disclosure. By furnishing the information in Item 7.01, Item 2.02 and in Exhibit 99.1, the Company makes no admission as to the materiality of any information contained herein or therein.

The Selected Information includes forward-looking statements. These forward-looking statements generally can be identified by the use of words such as “anticipate,” “expect,” “plan,” “could,” “may,” “will,” “believe,” “estimate,” “forecast,” “goal,” “project,” and other words of similar meaning. These forward-looking statements address various matters including our estimate of financial results for the fiscal year ended December 31, 2014, including select pro forma financial results based on our estimate of financial results for the fiscal year ended December 31, 2014. Each forward-looking statement is subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statement. Applicable risks and uncertainties include, among others, finalizing the financial statements and completing the audits of the Company for the fiscal year ended December 31, 2014, and the risks identified under the heading “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2013, and filed with the SEC, as well as the other information we file with the SEC. We caution investors, potential investors, and others not to place considerable reliance on the forward-looking statements contained in the Selected Information. You are encouraged to read our filings with the SEC, available at www.sec.gov, for a discussion of these and other risks and uncertainties. The forward-looking statements speak only as of the date of this document, and we undertake no obligation to update or revise any of these statements. Our business is subject to substantial risks and uncertainties, including those referenced above. Investors, potential investors, and others should give careful consideration to these risks and uncertainties.

(d) Exhibits

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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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EXHIBIT INDEX

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