ATMI INC Form 424B4: Prospectus (Rule 424(b)(4))
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2000-03-30: Form 424B4; Description PROSPECTUS.
- 1998-03-26: Form 424B4; Description FINAL PROSPECTUS.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2000-03-30 | 424B4 | PROSPECTUS | ||
| 1998-03-26 | 424B4 | FINAL PROSPECTUS |