# Simpson Manufacturing Co., Inc. — DEFA14A

Simpson Manufacturing Co., Inc. of PLEASANTON, CA filed a DEFA14A with the SEC on 2025-03-24. Industry: Cutlery, Handtools & General Hardware.

## Filing

- Filed: 2025-03-24
- Form: DEFA14A
- Accession: 0000920371-25-000065
- Registrant: Simpson Manufacturing Co., Inc.
- CIK: 0000920371
- Industry (SIC): Cutlery, Handtools & General Hardware (3420)
- State of incorporation: DE
- Location: PLEASANTON, CA

## Documents (3)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEFA14A | DEFA14A |
| 2 | GRAPHIC | ssddefa14aproxystatement001.jpg |
| 3 | GRAPHIC | ssddefa14aproxystatement002.jpg |

## Filing timeline for this registrant (53)

_Showing 12 of 53 filings._

| Filed | Form |
| --- | --- |
| [2026-03-24](https://search.stillhousedata.com/proxy/0001628280-26-020814) | DEFA14A |
| [2026-03-24](https://search.stillhousedata.com/proxy/0001628280-26-020810) | DEF 14A |
| 2025-03-24 | DEFA14A |
| [2025-03-24](https://search.stillhousedata.com/proxy/0000920371-25-000064) | DEF 14A |
| [2024-03-19](https://search.stillhousedata.com/proxy/0000920371-24-000083) | DEFA14A |
| [2024-03-19](https://search.stillhousedata.com/proxy/0000920371-24-000082) | DEF 14A |
| [2024-03-08](https://search.stillhousedata.com/proxy/0000920371-24-000073) | PRE 14A |
| [2023-03-16](https://search.stillhousedata.com/proxy/0001140361-23-012073) | DEFA14A |
| [2023-03-16](https://search.stillhousedata.com/proxy/0001140361-23-012067) | DEF 14A |
| [2022-03-23](https://search.stillhousedata.com/proxy/0001140361-22-010772) | DEFA14A |
| [2022-03-23](https://search.stillhousedata.com/proxy/0001140361-22-010769) | DEF 14A |
| [2021-03-23](https://search.stillhousedata.com/proxy/0001140361-21-009624) | DEFA14A |

## More

- [CIK 920371 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=920371&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000920371-25-000065.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.