# OM GROUP INC — DEF 14A

OM GROUP INC of CLEVELAND, OH filed a DEF 14A with the SEC on 2011-03-31. Industry: Miscellaneous Manufacturing Industries.

## Filing

- Filed: 2011-03-31
- Form: DEF 14A
- Accession: 0000950123-11-031164
- Registrant: OM GROUP INC
- CIK: 0000899723
- Industry (SIC): Miscellaneous Manufacturing Industries (3990)
- State of incorporation: DE
- Location: CLEVELAND, OH

## Documents (8)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEF 14A | DEF 14A |
| 2 | GRAPHIC | GRAPHIC |
| 3 | GRAPHIC | GRAPHIC |
| 4 | GRAPHIC | GRAPHIC |
| 5 | GRAPHIC | GRAPHIC |
| 6 | GRAPHIC | GRAPHIC |
| 7 | GRAPHIC | GRAPHIC |
| 8 | GRAPHIC | GRAPHIC |

## Filing timeline for this registrant (29)

_Showing 12 of 29 filings._

| Filed | Form |
| --- | --- |
| [2015-07-10](https://search.stillhousedata.com/proxy/0001193125-15-250362) | DEFM14A |
| [2015-06-26](https://search.stillhousedata.com/proxy/0001193125-15-237444) | PREM14A |
| [2015-06-01](https://search.stillhousedata.com/proxy/0001193125-15-209411) | DEFA14A |
| [2015-06-01](https://search.stillhousedata.com/proxy/0001193125-15-209386) | DEFA14A |
| [2015-06-01](https://search.stillhousedata.com/proxy/0001193125-15-209340) | DEFA14A |
| [2015-06-01](https://search.stillhousedata.com/proxy/0001193125-15-209311) | DEFA14A |
| [2015-04-22](https://search.stillhousedata.com/proxy/0001193125-15-141464) | DEF 14A |
| [2015-01-09](https://search.stillhousedata.com/proxy/0001193125-15-006497) | DEFA14A |
| [2014-04-03](https://search.stillhousedata.com/proxy/0001193125-14-129842) | DEF 14A |
| [2013-03-28](https://search.stillhousedata.com/proxy/0001193125-13-131825) | DEF 14A |
| [2012-04-25](https://search.stillhousedata.com/proxy/0001193125-12-179496) | DEFA14A |
| [2012-03-29](https://search.stillhousedata.com/proxy/0001193125-12-139521) | DEF 14A |

## More

- [CIK 899723 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=899723&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950123-11-031164.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.