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): March 28, 2014

ESCO TECHNOLOGIES INC.

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code: 314-213-7200

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:

¨ 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 240.113d-4 (c))

Item 2.01      Completion of Acquisition or Disposition of Assets

On March 28, 2014, the Registrant completed the disposition of its wholly-owned subsidiary Aclara Technologies LLC as well as two Aclara-related entities, Aclara International LLC and Distribution Control Systems Caribe, Inc. (collectively, “Aclara”) to Meter Readings Holding, LLC (“Buyer”), an affiliate of Sun Capital Partners, Inc., pursuant to the Securities Purchase Agreement entered into on March 14, 2014 (the “Agreement”).

A copy of the Agreement is attached to this Report as Exhibit 10.1. The Agreement is provided pursuant to Securities and Exchange Commission requirements and to provide investors with information regarding the terms of the Agreement. The terms of the Agreement have been negotiated between the parties solely for the purposes of this particular transaction, and are not intended to provide any other factual information about the Registrant or its subsidiaries or affiliates. The representations, warranties and covenants contained in the Agreement were made only for purposes of that Agreement and as of specific dates; were solely for the benefit of the parties to the Agreement; and are subject to limitations agreed upon by the parties, including being qualified by confidential disclosures made by each contracting party to the other for the purposes of allocating contractual risk between them, which may differ from those applicable to investors. Investors should not rely on the representations, warranties and covenants or any description thereof as characterizations of the actual state of facts or condition of the Registrant or any of its subsidiaries, affiliates or businesses. Moreover, information concerning the subject matter of the representations, warranties and covenants may change after the date of the Agreement, which subsequent information may or may not be fully reflected in public disclosures by the Registrant. Accordingly, investors should read the representations and warranties in the Agreement not in isolation but only in conjunction with the other information about the Registrant and its subsidiaries included in the reports, statements, and other filings the Registrant makes or has made with the Securities and Exchange Commission.

Item 9.01       Financial Statements and Exhibits

(b)       Pro forma financial information

On March 28, 2014, the Registrant completed the disposition of its wholly-owned subsidiary Aclara Technologies LLC as well as two Aclara-related entities, Aclara Internatinal LLC and Distribution Control System Caribe, Inc. (collectively, “Aclara”) to Meter Readings Holding, LLC (“Buyer”), an affiliate of Sun Capital Partners, Inc., pursuant to the Securities Purchase Agreement entered into on March 14, 2014 (the”Agreement”). The Agreement provides for a purchase price of $130 million in cash, plus or minus certain customary adjustments to Aclara’s working capital specified in the Agreement. In addition, approximately $18 million of specified Aclara receivables will be paid to the Registrant when collected by Aclara.

The following unaudited pro forma consolidated statements of operations for the fiscal year ended September 30, 2013 and the three months ended December 31, 2013 present the Registrant’s results of operations as adjusted to give effect to the divestiture of Aclara as if it had occurred at the beginning of the period presented. The accompanying unaudited pro forma consolidated balance sheet as of December 31, 2013 presents the Registrant’s financial position as if the divestiture had occurred on December 31, 2013. The unaudited pro forma consolidated balance sheet as of December 31, 2013 reflects the elimination of the net assets of Aclara, the elimination of all intercompany accounts, the inclusion of the net proceeds from the sale in cash and cash equivalents, and the estimated loss on the sale in retained earnings. The estimated loss on the sale of Aclara may change upon final determination and settlement of post-closing adjustments.

The unaudited pro forma financial statements should be read in conjunction with the Registrant’s consolidated financial statements and notes thereto previously filed as part of the Registrant’s most recent annual and quarterly reports on Forms 10-K and 10-Q for the periods ended September 30, 2013 and December 31, 2013, respectively.

The unaudited pro forma information below is provided for information purposes only and is not necessarily indicative of what the actual financial position or results of operations of the Registrant would have been had the transaction actually occurred on the dates indicated, nor does it purport to indicate the future financial position or results of operations of the Registrant. Results of operations for the three months ended December 31, 2013 may not be indicative of results of operations to be expected for a full year. The pro forma adjustments are based upon available information and assumptions believed to be reasonable in the circumstances. There can be no assurance that such information and assumptions will not change from those reflected in the pro forma financial statements and notes thereto.

ESCO TECHNOLOGIES INC. AND SUBSIDIARIES

PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS

(Unaudited)

(Dollars in thousands, except per share amounts)

Notes:

(1) The elimination of Aclara’s operating results reflects the sale as per the terms of the Agreement.

(2) Represents an adjustment of interest expense assuming the net cash proceeds were received at the beginning of the period and used to pay down debt.

(3) Represents a 35% tax expense impact on the pro forma adjustments.

(4) Does not reflect $0.30 per share related to restructuring charges incurred at ETS and Doble Lemke.

ESCO TECHNOLOGIES INC. AND SUBSIDIARIES

PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS

(Unaudited)

(Dollars in thousands, except per share amounts)

Notes:

(1) The elimination of Aclara’s operating results reflects the sale as per the terms of the Agreement.

(2) Represents an adjustment of interest expense assuming the net cash proceeds were received at the beginning of the period and used to pay down debt.

(3) Represents a 35% tax expense impact on the pro forma adjustments.

ESCO TECHNOLOGIES INC. AND SUBSIDIARIES

PRO FORMA CONSOLIDATED BALANCE SHEET

(Unaudited)

(Dollars in thousands)

Notes:

* Schedules to the Securities Purchase Agreement have been omitted pursuant to the provisions of Item 601(b)(2) of Regulation S-K. The Registrant agrees to furnish a copy of any of the omitted schedules to the Securities and Exchange Commission upon request.

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.

Date: March 28, 2014.

EXHIBIT INDEX

* Schedules to the Securities Purchase Agreement have been omitted pursuant to the provisions of Item 601(b)(2) of Regulation S-K. The Registrant agrees to furnish a copy of any of the omitted schedules to the Securities and Exchange Commission upon request.