OM GROUP INC Form DEFA14A: Additional definitive proxy soliciting materials
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2015-06-01: Form DEFA14A; Description 8-K; Document d935691d8k.htm.
- 2015-06-01: Form DEFA14A; Description DEFA14A; Document d935842ddefa14a.htm.
- 2015-06-01: Form DEFA14A; Description DEFA14A; Document d935820ddefa14a.htm.
- 2015-06-01: Form DEFA14A; Description DEFA14A; Document d935838ddefa14a.htm.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2015-06-01 | DEFA14A | 8-K | d935691d8k.htm | |
| 2015-06-01 | DEFA14A | DEFA14A | d935842ddefa14a.htm | |
| 2015-06-01 | DEFA14A | DEFA14A | d935820ddefa14a.htm | |
| 2015-06-01 | DEFA14A | DEFA14A | d935838ddefa14a.htm | |
| 2015-01-09 | DEFA14A | DEFA14A | d850113ddefa14a.htm | |
| 2012-04-25 | DEFA14A | DEFA14A | d340102ddefa14a.htm | |
| 2011-05-02 | DEFA14A | DEFA14A | l42547defa14a.htm |