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) September 24, 1998 ------------------------------ INTEGRATED SYSTEMS, INC. - -------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) California 0-18268 94-2658153 - ---------------------------- ----------- ---------------- (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) 3260 Jay Street Santa Clara, California 95054-3309 - ---------------------------------------- ---------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (408) 980-1500 ----------------------------- Item 5: Other Events Adoption of Stockholder Rights Plan. On September 24, 1998, the Board of Directors of Integrated Systems, Inc. (the "Company") declared a dividend of one preferred share purchase right (a "Right") for each outstanding share of common stock, no par value (the "Common Shares"), of the Company. The dividend is payable to stockholders of record on October 15, 1998 (the "Record Date"). In addition, one Right shall be issued with each Common Share that becomes outstanding (i) between the Record Date and the earliest of the Distribution Date, the Redemption Date and the Final Expiration Date (as such terms are defined in the Rights Agreement) or (ii) following the Distribution Date and prior to the Redemption Date or Final Expiration Date, pursuant to the exercise of stock options or under any employee plan or arrangement or upon the exercise, conversion or exchange of other securities of the Company, which options or securities were outstanding prior to the Distribution Date. Each Right entitles the registered holder to purchase from the Company one two-hundredth of a share of Series A Junior Participating Preferred Stock, no par value (the "Preferred Shares"), of the Company, at a price of $55.00, subject to adjustment. The description and terms of the Rights are set forth in a Rights Agreement (the "Rights Agreement") between the Company and ChaseMellon Shareholder Services, as Rights Agent. A summary of the Rights and Rights Agreement is included as Exhibit C to the Rights Agreement, which is included as Exhibit 4.1 hereto. Item 7: Financial Statements and Exhibits. (c) Exhibits -------- 4.1 Rights Agreement dated September 30, 1998, between the Company and ChaseMellon Shareholder Services, as Rights Agent, which includes as Exhibit A the form of Certificate of Determination of Preferences of Series A Junior Participating Preferred Stock, as Exhibit B the Form of Right Certificate and as Exhibit C the Summary of Rights to Purchase Preferred Shares. (Incorporated by reference to the Company's Registration Statement on Form 8-A filed with the Securities and Exchange Commission on October 6, 1998.) 99.1 Press release of the Company dated September 30, 1998. 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 6, 1998 INTEGRATED SYSTEMS, INC. By: /s/ Joseph Addiego -------------------------------- Joseph Addiego Chief Executive Officer EXHIBIT INDEX Exhibit - ------- 4.1 Rights Agreement dated September 30, 1998, between the Company and ChaseMellon Shareholder Services, as Rights Agent, which includes as Exhibit A the form of Certificate of Determination of Preferences of Series A Junior Participating Preferred Stock, as Exhibit B the Form of Right Certificate and as Exhibit C the Summary of Rights to Purchase Preferred Shares. (Incorporated by reference to the Company's Registration Statement on Form 8-A filed with the Securities and Exchange Commission on October 6, 1998.) 99.1 Press release of the Company dated September 30, 1998.