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): OCTOBER 3, 2005 (OCTOBER 6, 2005) ------------ HEALTHCARE ACQUISITION CORP. ---------------------------- (Exact Name of Registrant as Specified in Charter) DELAWARE 001-32587 20-2726770 ---------------------------- ----------- ------------- (State or Other Jurisdiction (Commission (IRS Employer of Incorporation) File Number) Identification No.) 2116 FINANCIAL CENTER 666 WALNUT STREET DES MOINES, IOWA 50309 --------------------------------------------------- ------------------ (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code: (515) 244-5746 -------------- 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 (see General Instruction A.2. below): | | 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 240.13e-4(c))

ITEM 8.01. OTHER EVENTS Healthcare Acquisition Corp. (the "Company") announced today that, commencing October 6, 2005, the common stock and warrants included in the Company's units shall trade separately and that trading in the units shall cease on such date. The common stock and warrants will be listed on the American Stock Exchange under the symbols HAQ and HAQ.WS, respectively. The Company consummated its initial public offering on August 3, 2005. ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS (c) Exhibits: Exhibit 99.1 Press release dated October 3, 2005

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. Dated: October 3, 2005 HEALTHCARE ACQUISITION CORP. By: /s/ Matthew P. Kinley ------------------------ Matthew P. Kinley President

Exhibit 99.1 Contact: Matthew P. Kinley President Healthcare Acquisition Corp. 515-244-5746 FOR IMMEDIATE RELEASE - --------------------- HEALTHCARE ACQUISITION CORP.'S COMMON STOCK AND WARRANTS TO TRADE SEPARATELY ON OCTOBER 6, 2005 --------------------------------- NEW YORK, NEW YORK, October 3, 2005 - Healthcare Acquisition Corp. (AMEX:HAQ.U) announced today that, commencing October 6, 2005, the common stock and warrants included in the Company's units shall trade separately and that trading in the units shall cease on such date. The common stock and warrants will be listed on the American Stock Exchange under the symbols HAQ and HAQ.WS, respectively. The Company consummated its initial public offering on August 3, 2005. # # #