OM GROUP INC Form 424B1: Prospectus (Rule 424(b)(1))
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 1997-04-28: Form 424B1; Description OM GROUP 424(B)(1).
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 1997-04-28 | 424B1 | OM GROUP 424(B)(1) |