# DIAMOND HILL INVESTMENT GROUP INC — DEFA14A

DIAMOND HILL INVESTMENT GROUP INC of COLUMBUS, OH filed a DEFA14A with the SEC on 2025-12-11. Industry: Investment Advice.

## Filing

- Filed: 2025-12-11
- Form: DEFA14A
- Accession: 0000950103-25-016035
- Registrant: DIAMOND HILL INVESTMENT GROUP INC
- CIK: 0000909108
- Industry (SIC): Investment Advice (6282)
- State of incorporation: OH
- Location: COLUMBUS, OH

## Documents (1)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEFA14A | FORM DEFA14A |

## Filing timeline for this registrant (45)

_Showing 12 of 45 filings._

| Filed | Form |
| --- | --- |
| [2026-04-13](https://search.stillhousedata.com/proxy/0001193125-26-152908) | DEFA14A |
| [2026-04-13](https://search.stillhousedata.com/proxy/0001193125-26-152869) | DEF 14A |
| [2026-02-17](https://search.stillhousedata.com/proxy/0000950103-26-002219) | DEFA14A |
| [2026-01-28](https://search.stillhousedata.com/proxy/0001140361-26-002681) | DEFM14A |
| [2026-01-28](https://search.stillhousedata.com/proxy/0000950103-26-001113) | DEFA14A |
| [2026-01-16](https://search.stillhousedata.com/proxy/0001140361-26-001516) | PREM14A |
| [2025-12-18](https://search.stillhousedata.com/proxy/0000950103-25-016343) | DEFA14A |
| [2025-12-11](https://search.stillhousedata.com/proxy/0000950103-25-016040) | DEFA14A |
| [2025-12-11](https://search.stillhousedata.com/proxy/0000950103-25-016038) | DEFA14A |
| [2025-12-11](https://search.stillhousedata.com/proxy/0000950103-25-016037) | DEFA14A |
| 2025-12-11 | DEFA14A |
| [2025-12-11](https://search.stillhousedata.com/proxy/0000950103-25-016034) | DEFA14A |

## More

- [CIK 909108 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=909108&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950103-25-016035.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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