| Filed On | Filing |
|---|---|
| 07 Jan 2004 | 424B3 PROSPECTUS SUPPLEMENT |
| 12 Dec 2003 | 424B3 PROSPECTUS SUPPLEMENT |
| 16 Jul 2003 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 12 Jun 2003 | 424B3 PROSPECTUS SUPPLEMENT |
| 30 Sep 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 24 Jul 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 18 Jun 2002 | 424B3 PROSPECTUS SUPPLEMENT |
| 28 May 2002 | 424B3 |
| 08 May 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 01 May 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 18 Apr 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 11 Mar 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 27 Feb 2002 | FORM 424B3 PROSPECTUS SUPPLEMENT |
| 26 Oct 2000 | PROSPECTUS |
| 27 Jul 1998 | ATMI, INC. PROSPECTUS SUPPLEMENT |
| 15 Jul 1998 | ATMI, INC. DEFINITIVE PROXY / PROSPECTUS |
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