# BOK FINANCIAL CORP — 425

BOK FINANCIAL CORP of TULSA, OK filed a 425 with the SEC on 2018-08-23. Industry: National Commercial Banks.

## Filing

- Filed: 2018-08-23
- Form: 425
- Accession: 0000875357-18-000073
- Registrant: BOK FINANCIAL CORP
- CIK: 0000875357
- Industry (SIC): National Commercial Banks (6021)
- State of incorporation: OK
- Location: TULSA, OK

## Documents (3)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | 425 | 8-K |
| 2 | EX-99 | EXHIBIT 99 |
| 3 | GRAPHIC | cobizregulatoryapprov\_image1.gif |

## Filing timeline for this registrant (43)

_Showing 12 of 43 filings._

| Filed | Form |
| --- | --- |
| [2026-03-19](https://search.stillhousedata.com/proxy/0000875357-26-000023) | DEF 14A |
| [2025-03-20](https://search.stillhousedata.com/proxy/0000875357-25-000020) | DEF 14A |
| [2024-03-21](https://search.stillhousedata.com/proxy/0000875357-24-000013) | DEF 14A |
| [2023-03-31](https://search.stillhousedata.com/proxy/0000875357-23-000018) | DEFA14A |
| [2023-03-23](https://search.stillhousedata.com/proxy/0000875357-23-000012) | DEF 14A |
| [2022-03-24](https://search.stillhousedata.com/proxy/0000875357-22-000017) | DEF 14A |
| [2021-03-25](https://search.stillhousedata.com/proxy/0000875357-21-000018) | DEF 14A |
| [2020-03-19](https://search.stillhousedata.com/proxy/0000875357-20-000025) | DEF 14A |
| [2019-03-15](https://search.stillhousedata.com/proxy/0000875357-19-000013) | DEF 14A |
| [2018-09-05](https://search.stillhousedata.com/proxy/0000875357-18-000075) | 425 |
| 2018-08-23 | 425 |
| [2018-07-25](https://search.stillhousedata.com/proxy/0000875357-18-000066) | 425 |

## More

- [CIK 875357 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=875357&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000875357-18-000073.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.