UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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 30, 2014

TELEFLEX INCORPORATED

(Exact name of Registrant as Specified in Its Charter)

Registrant’s Telephone Number, Including Area Code (610) 948-5100

Not applicable

(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:

On April 30, 2014, Teleflex Incorporated (the “Company”) issued a press release (the “Press Release”) announcing its financial results for the quarter ended March 30, 2014. A copy of the Press Release is furnished as Exhibit 99.1 to this Current Report.

In addition to the financial information included in the Press Release that has been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”), the Press Release includes certain non-GAAP financial measures. These measures include adjusted diluted earnings per share and constant currency revenue growth. Adjusted diluted earnings per shares excludes, depending on the period presented, (i) the effect of charges associated with our restructuring programs, as well as goodwill and other asset impairment charges; (ii) loss on extinguishment of debt; (iii) the gain or loss on sales of businesses and assets; (iv) losses and other charges related to acquisition and integration costs, the reversal of liabilities related to certain contingent consideration arrangements, the establishment of a litigation reserve and a litigation verdict against the Company with respect to a non-operating joint venture; (v) amortization of the debt discount on the Company’s convertible notes; (vi) intangible amortization expense; and (vii) tax benefits resulting from the resolution of prior years’ tax matters and the filing of prior years’ amended tax returns. In addition, the calculation of diluted shares within adjusted earnings per share gives effect to the anti-dilutive impact of the Company’s convertible note hedge agreements, which reduce the potential economic dilution that otherwise would occur upon conversion of the Company’s senior subordinated convertible notes (under GAAP, the anti-dilutive impact of the convertible note hedge agreements is not reflected in diluted shares). Constant currency revenue and growth exclude the impact of translating the results of international subsidiaries at different currency exchange rates from period to period. The Press Release includes a reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures.

Management believes that these non-GAAP financial measures provide useful information to investors to facilitate the comparison of past and present operations, excluding items that the Company does not believe are indicative of our ongoing operations. In addition, management believes that the calculation of non-GAAP diluted shares is useful to investors because it provides insight into the offsetting economic effect of the convertible note hedge against conversions of the convertible notes. Management uses these financial measures for internal managerial purposes, when publicly providing guidance on possible future results and to assist in our evaluation of period-to-period comparisons. However, such non-GAAP measures should be considered in addition to, not as a substitute for, or superior to other financial measures prepared in accordance with GAAP. Additionally, such non-GAAP financial measures as presented by the Company may not be comparable to similarly titled measures reported by other companies.

The information furnished pursuant to Item 2.02 of this Current Report, including Exhibit 99.1 hereto, shall not be considered “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of such section, nor shall it be incorporated by reference into future filings by the Company under the Securities Act of 1933, as amended, or under the Securities Exchange Act of 1934, as amended, unless the Company expressly sets forth in such future filing that such information is to be considered “filed” or incorporated by reference therein.

On April 28, 2014, the Board of Directors of the Company approved a restructuring plan (the “Plan”) designed to reduce costs, improve operating efficiencies and enhance the Company’s long term competitive position. The Plan, which was developed in response to continuing cost pressures in the healthcare industry, involves the consolidation of operations and a related reduction in workforce at certain of the Company’s facilities, and will include the relocation of manufacturing operations from certain higher-cost locations to existing lower-cost locations. These actions will commence in the second quarter 2014 and are expected to be substantially completed by the end of 2017.

The Company estimates that it will incur aggregate pre-tax charges in connection with these restructuring activities of approximately $42 million to $53 million, of which the Company expects approximately $22 million to $23 million will be incurred in 2014 and most of the balance will be incurred prior to the end of 2016. Generally, the Company expects that it will exclude these charges from its adjusted diluted earnings per share results. The Company estimates that $32 million to $40 million of the aggregate pre-tax charges will result in future cash outlays, of which the Company expects approximately $9 million to $11 million will be made in 2014 and most of the balance will be made prior to the end of 2016. In addition, the Company expects to make $24 million to $30 million in capital expenditures in connection with the Plan, of which the Company expects approximately $10 million to $15 million will be made in 2014.

The following table provides a summary of the Company’s current cost estimates by major type of cost associated with the Plan:

The Company currently expects to achieve annualized savings of $28 million to $35 million once the Plan is fully implemented, and currently expects to realize Plan-related savings beginning in 2015.

As the Plan is implemented, management will continue to evaluate the estimated costs and anticipated savings set forth above, and may revise its estimates of such costs and anticipated savings and the accounting charges relating thereto, as appropriate, consistent with generally accepted accounting principles.

FORWARD-LOOKING INFORMATION

This report contains forward-looking statements, including, but not limited to, estimated costs and anticipated savings relating to the Plan, and the anticipated timing of such costs and savings. Actual

results could differ materially from those in the forward-looking statements due to, among other things, unanticipated difficulties in connection with the consolidation of manufacturing and administrative functions, rationalizing manufacturing capacity, consolidating operations, and shifting production to more economical facilities; cost overruns or delays, including as a result of unanticipated difficulties with various employees, labor representatives or regulators; the loss of skilled employees in connection with the initiatives; projected savings falling short of targets; and other factors described or incorporated in the Company’s filings with the Securities and Exchange Commission, including the Company’s Annual Report on Form 10-K for the year ended December 31, 2013. The Company expressly disclaims any obligation to update these forward-looking statements, except as otherwise specifically stated by the Company or as required by law or regulation.

(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 hereunto duly authorized.

EXHIBIT INDEX