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): July 21, 2004 --------- ATMI, INC. (Exact name of registrant as specified in its charter) Delaware 0-30130 06-1481060 (State or other jurisdiction of (Commission file number) (I.R.S. employer incorporation or organization) identification no.) 7 Commerce Drive Danbury, Connecticut 06810 (Address of principal executive offices) (Zip code) Registrant's telephone number, including area code: (203) 794-1100 ATMI, INC. FORM 8-K CURRENT REPORT TABLE OF CONTENTS Page Item 7. Exhibits.........................................................3 Item 12. Results of Operations and Financial Condition....................3 Signature....................................................................4 2 Item 7. Exhibits. Exhibit No. Description - ----------- ----------- 99.1 Press Release, dated July 21, 2004, entitled "ATMI Reports Second Quarter 2004 Results." Item 12. Results of Operations and Financial Condition. On July 21, 2004, the Registrant issued a press release announcing its financial results for the second quarter of 2004. A copy of the press release is furnished as Exhibit 99.1 to this current report and is incorporated herein by reference. 3 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, ATMI, Inc. has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: July 21, 2004 ATMI, INC. By: /s/ Dan Sharkey ---------------------------------- Name: Dan Sharkey Title: Vice President, Treasurer and Chief Financial Officer 4