# OPPENHEIMER HOLDINGS INC — SC TO-I/A

OPPENHEIMER HOLDINGS INC of NEW YORK, NY filed a SC TO-I/A with the SEC on 2023-07-06. Industry: Security Brokers, Dealers & Flotation Companies.

## Filing

- Filed: 2023-07-06
- Form: SC TO-I/A
- Accession: 0001104659-23-078797
- Registrant: OPPENHEIMER HOLDINGS INC
- CIK: 0000791963
- Industry (SIC): Security Brokers, Dealers & Flotation Companies (6211)
- State of incorporation: DE
- Location: NEW YORK, NY

## Documents (3)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | SC TO-I/A | SC TO-I/A |
| 2 | EX-99.(A)(5)(C) | EXHIBIT 99.(A)(5)(C) |
| 3 | GRAPHIC | GRAPHIC |

## Filing timeline for this registrant (32)

_Showing 12 of 32 filings._

| Filed | Form |
| --- | --- |
| [2026-03-13](https://search.stillhousedata.com/proxy/0001104659-26-027365) | DEF 14A |
| [2026-03-02](https://search.stillhousedata.com/proxy/0001104659-26-021942) | PRE 14A |
| [2025-03-14](https://search.stillhousedata.com/proxy/0001104659-25-023748) | DEF 14A |
| [2024-03-15](https://search.stillhousedata.com/proxy/0001104659-24-034972) | DEF 14A |
| 2023-07-06 | SC TO-I/A |
| [2023-06-29](https://search.stillhousedata.com/proxy/0001104659-23-076124) | SC TO-I/A |
| [2023-05-31](https://search.stillhousedata.com/proxy/0001104659-23-066256) | SC TO-I |
| [2023-03-17](https://search.stillhousedata.com/proxy/0001104659-23-033854) | DEF 14A |
| [2022-03-18](https://search.stillhousedata.com/proxy/0001104659-22-035397) | DEF 14A |
| [2021-03-19](https://search.stillhousedata.com/proxy/0001047469-21-000658) | DEF 14A |
| [2020-04-23](https://search.stillhousedata.com/proxy/0001104659-20-050208) | DEFA14A |
| [2020-03-20](https://search.stillhousedata.com/proxy/0001047469-20-001636) | DEF 14A |

## More

- [CIK 791963 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=791963&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0001104659-23-078797.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.