OM GROUP INC Form PRE 14A: Preliminary proxy statement
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2008-02-22: Form PRE 14A; Period of report 2008-05-13; Description OM GROUP, INC. PRE 14A; Document l30229apre14a.htm.
- 1998-03-09: Form PRE 14A; Period of report 1998-05-05; Description OM GROUP, INC. PRELIMINARY PROXY.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2008-02-22 | PRE 14A | 2008-05-13 | OM GROUP, INC. PRE 14A | l30229apre14a.htm |
| 1998-03-09 | PRE 14A | 1998-05-05 | OM GROUP, INC. PRELIMINARY PROXY |