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: February 28, 2003 ESSEX CORPORATION (Exact name of Registrant as specified in its charter) Commission File No. 0-10772 Virginia 54-0846569 (State or other jurisdiction of (IRS Employer ID No.) incorporation or organization) 9150 Guilford Road Columbia, Maryland 21046-2306 (Address of principal executive office) (Zip Code) Registrant's telephone number, including area code: (301) 939-7000 ESSEX CORPORATION Item 2. Acquisition or Disposition of Assets Pursuant to an Agreement and Plan of Merger dated as of February 21, 2003 (the "Agreement") by and among the Registrant, its wholly-owned subsidiary ("Merger Sub"), Sensys Development Laboratories, Inc., a Maryland corporation ("SDL"), and the principal shareholders of SDL, Merger Sub was merged with and into SDL with SDL as the surviving corporation (the "Merger"). The Merger became effective as of February 28, 2003. Pursuant to the terms of the Agreement, SDL shareholders shall receive a total of $309,000 in cash and shares and options for shares of Registrant's common stock in exchange for the outstanding common stock and options held by SDL shareholders. The terms of the Merger are contained in the Agreement, which is included herewith as Exhibit 2.1. Item 7. Financial Statements and Exhibits (a) The financial statements required by this Item are not included in this initial report on Form 8-K but will be filed by amendment not later than sixty days after the date that the initial report on Form 8-K must be filed. (b) The pro forma financial information of Essex Corporation required by this Item are not included in this initial report on Form 8-K but will be filed by amendment not later than sixty days after the date that the initial report on Form 8-K must be filed. (c) Exhibits Exhibit 2.1 Agreement and Plan of Merger among Essex Corporation, SDL Acquisition,Inc.,Sensys Development Laboratories, Inc. and the Principal Shareholders, dated February 21, 2003 (excluding Exhibits and Schedules) Exhibit 99.1 Press release dated March 3, 2003 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. ESSEX CORPORATION (Registrant) /S/ JOSEPH R. KURRY, JR. ------------------------------------------------- DATE: March 7, 2003 Joseph R. Kurry, Jr. Sr. Vice President, Treasurer and Chief Financial Officer 2 ESSEX CORPORATION EXHIBIT INDEX (Pursuant to Item 601 of Regulation S-X) Exhibit NUMBER DESCRIPTION AND METHOD OF FILING 2.1 Agreement and Plan of Merger among Essex Corporation, SDL Acquisition, Inc., Sensys Development Laboratories, Inc. and the Principal Shareholders, dated as of February 21, 2003 (excluding Exhibits and Schedules), filed herewith. 99.1 Press release dated March 3, 2003, filed herewith.