# AAON, INC. — DEF 14A

AAON, INC. of TULSA, OK filed a DEF 14A with the SEC on 1999-04-22. Industry: Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip.

## Filing

- Filed: 1999-04-22
- Form: DEF 14A
- Accession: 0000950134-99-003172
- Registrant: AAON, INC.
- CIK: 0000824142
- Industry (SIC): Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)
- State of incorporation: NV
- Location: TULSA, OK

## Filing timeline for this registrant (46)

_Showing 12 of 46 filings._

| Filed | Form |
| --- | --- |
| [2026-04-01](https://search.stillhousedata.com/proxy/0000824142-26-000011) | DEF 14A |
| [2026-03-20](https://search.stillhousedata.com/proxy/0000824142-26-000009) | PRE 14A |
| [2025-04-02](https://search.stillhousedata.com/proxy/0000824142-25-000110) | DEF 14A |
| [2024-04-09](https://search.stillhousedata.com/proxy/0000824142-24-000110) | DEFA14A |
| [2024-04-08](https://search.stillhousedata.com/proxy/0000824142-24-000106) | DEF 14A |
| [2024-03-27](https://search.stillhousedata.com/proxy/0000824142-24-000092) | PRE 14A |
| [2023-03-31](https://search.stillhousedata.com/proxy/0000824142-23-000084) | DEF 14A |
| [2022-03-31](https://search.stillhousedata.com/proxy/0000824142-22-000081) | DEF 14A |
| [2021-03-31](https://search.stillhousedata.com/proxy/0000824142-21-000065) | DEF 14A |
| [2020-04-29](https://search.stillhousedata.com/proxy/0000824142-20-000080) | DEFA14A |
| [2020-04-01](https://search.stillhousedata.com/proxy/0000824142-20-000065) | DEF 14A |
| [2019-04-02](https://search.stillhousedata.com/proxy/0000824142-19-000071) | DEF 14A |

## More

- [CIK 824142 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=824142&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950134-99-003172.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.