UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q/A (Mark One) [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 1998 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0-28402 ARADIGM CORPORATION (Exact name of registrant as specified in its charter) California 94-3133088 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 26219 Eden Landing Road, Hayward, CA 94545 (Address of principal executive offices including zip code) (510) 783-0100 (Registrant's telephone number, including area code) Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date. Common Stock, no par value 11,764,660 shares (Class) (Outstanding at April 22, 1998) PART II OTHER INFORMATION ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K. (a) Exhibits Item Description 10.1* 1996 Equity Incentive Plan, as amended 10.2* Employee Stock Purchase Plan, as amended 27.1** Financial Data Schedule 27.2** Restated Financial Data Schedule * Filed as an exhibit to the Company's Proxy Statement filed on April 16, 1998 and incorporated herein by reference. **Previously filed. (b) Reports on Form 8-K The Company did not file any reports on Form 8-K during the quarter ended March 31, 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 thereunto duly authorized. Dated: July 6, 1998 ARADIGM CORPORATION (Registrant) /s/ Mark A. Olbert Mark A. Olbert Vice President, Finance and Administration and Chief Financial Officer FORM 10-Q/A INDEX TO EXHIBITS Exhibit Number Description 10.1* 1996 Equity Incentive Plan, as amended 10.2* Employee Stock Purchase Plan, as amended 27.1** Financial Data Schedule 27.2** Restated Financial Data Schedule * Filed as an exhibit to the Company's Proxy Statement filed on April 16, 1998 and incorporated herein by reference. ** Previously filed.