# FUEL TECH, INC. — DEFA14A

FUEL TECH, INC. of WARRENVILLE, IL filed a DEFA14A with the SEC on 2021-05-13. Industry: Industrial & Commercial Fans & Blowers & Air Purifing Equip.

## Filing

- Filed: 2021-05-13
- Form: DEFA14A
- Accession: 0001193125-21-160651
- Registrant: FUEL TECH, INC.
- CIK: 0000846913
- Industry (SIC): Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)
- State of incorporation: DE
- Location: WARRENVILLE, IL

## Documents (2)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEFA14A | DEFA14A |
| 2 | GRAPHIC | GRAPHIC |

## Filing timeline for this registrant (44)

_Showing 12 of 44 filings._

| Filed | Form |
| --- | --- |
| [2026-04-13](https://search.stillhousedata.com/proxy/0001437749-26-012157) | DEF 14A |
| [2025-04-21](https://search.stillhousedata.com/proxy/0001437749-25-012519) | DEF 14A |
| [2024-04-15](https://search.stillhousedata.com/proxy/0001437749-24-012049) | DEF 14A |
| [2024-04-04](https://search.stillhousedata.com/proxy/0001437749-24-011073) | PRE 14A |
| [2023-04-19](https://search.stillhousedata.com/proxy/0001437749-23-010654) | DEFA14A |
| [2023-04-17](https://search.stillhousedata.com/proxy/0001437749-23-010430) | DEF 14A |
| [2022-04-11](https://search.stillhousedata.com/proxy/0001437749-22-008681) | DEF 14A |
| 2021-05-13 | DEFA14A |
| [2021-03-26](https://search.stillhousedata.com/proxy/0001193125-21-096570) | DEF 14A |
| [2020-05-11](https://search.stillhousedata.com/proxy/0001193125-20-137825) | DEFA14A |
| [2020-03-25](https://search.stillhousedata.com/proxy/0001193125-20-084375) | DEF 14A |
| [2020-03-13](https://search.stillhousedata.com/proxy/0001193125-20-073053) | PRE 14A |

## More

- [CIK 846913 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=846913&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0001193125-21-160651.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.