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): June 10, 2005 IRIS INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) DELAWARE 001-11181 94-2579751 (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) 9172 ETON AVENUE CHATSWORTH, CA 91311 (Address of Principal Executive Offices/Zip Code) (818) 709-1244 (Registrant's telephone number, including area code) 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-4c)) ITEM 5.02. DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF PRINCIPAL OFFICERS Effective June 10, 2005, our Board of Directors increased the size of the Board to six members and appointed Thomas H. Adams, Ph.D. as a Director of the Company. There are no understandings or arrangements between Dr. Adams and any other person pursuant to which Dr. Adams was selected as a director. Dr. Adams does not have any family relationship with any director, executive officer or person nominated or chosen by our Board of Directors to become a director or executive officer. Additionally, there have been no transactions, or series of related transactions, in the last year, nor is there any currently proposed transaction, or series of similar transactions, to which the Company or any of its subsidiaries was a party, or will be a party, and in which Dr. Adams or any member of his immediate family had, or will have, a direct or indirect material interest. A press release announcing Dr. Adams's appointment is attached hereto as Exhibit 99.1. ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS (c) Exhibits. The following exhibits are filed herewith: EXHIBIT NUMBER DESCRIPTION ------- ----------- 99.1 Press Release announcing the Appointment of Thomas H. Adams, Ph.D. as a Director of IRIS International, Inc., dated June 10, 2005. 2 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. IRIS INTERNATIONAL, INC. Date: June 10, 2005 By: /s/ Martin G. Paravato ------------------------------ Martin G. Paravato Chief Financial Officer 3 EXHIBIT INDEX EXHIBIT NUMBER DESCRIPTION - ------- ----------- 99.1 Press Release announcing the Appointment of Thomas H. Adams, Ph.D. as a Director of IRIS International, Inc., dated June 10, 2005. 4