OM GROUP INC Form 424B4: Prospectus (Rule 424(b)(4))
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2002-01-22: Form 424B4; Description OM GROUP, INC. 424(B)(4); Document l91775ee424b4.txt.
- 1998-06-30: Form 424B4; Description OM GROUP, INC. FORM 424(B)(4).
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2002-01-22 | 424B4 | OM GROUP, INC. 424(B)(4) | l91775ee424b4.txt | |
| 1998-06-30 | 424B4 | OM GROUP, INC. FORM 424(B)(4) |