1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ----------- FORM 8-K/A #1 CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) OCTOBER 20, 1999 -------------------------------- ISOCOR - -------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) CALIFORNIA 000-27900 95-4310259 - -------------------------------------------------------------------------------- (State or other jurisdiction (Commission File (I.R.S. Employer of incorporation) Number) Identification No.) 3420 OCEAN PARK BOULEVARD, SANTA MONICA, CALIFORNIA 90405 - -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (310) 581-8100 ------------------------------ INAPPLICABLE - -------------------------------------------------------------------------------- (Former name or former address if changed since last report) Exhibit Index located on page 3. 2 ITEM 7. FINANCIAL STATEMENT AND EXHIBITS (c) Exhibits. Number Description - ------ ----------- 2.1 Agreement and Plan of Reorganization, dated as of October 20, 1999, among Critical Path, Inc., Initialize Acquisition Corp. and ISOCOR (the schedules to such agreement are not filed herewith and are listed on the last page of Exhibit 2.1. The registrant hereby undertakes to furnish supplementally a copy of any omitted schedule to the Securities and Exchange Commission upon request). 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. ISOCOR By: /s/ PAUL GIGG ----------------------- Paul Gigg, President and Chief Executive Officer Dated: November 1, 1999 2 3 EXHIBIT INDEX Number Description - ------ ----------- 2.1 Agreement and Plan of Reorganization, dated as of October 20, 1999, among Critical Path, Inc., Initialize Acquisition Corp. and ISOCOR (the schedules to such agreement are not filed herewith and are listed on the last page of Exhibit 2.1. The registrant hereby undertakes to furnish supplementally a copy of any omitted schedule to the Securities and Exchange Commission upon request). 3