1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 8-K PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): DECEMBER 11, 2000 ARADIGM CORPORATION (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) CALIFORNIA (STATE OR OTHER JURISDICTION OF INCORPORATION) 0-28402 94-3133088 (COMMISSION FILE NO.) (IRS EMPLOYER IDENTIFICATION NO.) 3929 POINT EDEN WAY HAYWARD, CALIFORNIA 94545 (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES AND ZIP CODE) REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (510) 265-9000 2 Item 7. Financial Statements, Pro Forma Financial Information and Exhibits. (c) Exhibits 10.28 Common Stock Purchase Agreement, dated as of November 3, 2000, by and between Aradigm Corporation and Acqua Wellington North American Equities Fund, Ltd. 1 3 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, thereunto duly authorized. ARADIGM CORPORATION Dated: December 11, 2000 By: /s/ Norman Halleen ----------------------------------------- Norman Halleen Title: Vice President, Finance and Administration and Chief Financial Officer (Principal Financial and Accounting Officer) 2 4 INDEX TO EXHIBITS 10.28 Common Stock Purchase Agreement, dated as of November 3, 2000, by and between Aradigm Corporation and Acqua Wellington North American Equities Fund, Ltd. 3