# US Ecology Holdings, Inc. — DEF 14A

US Ecology Holdings, Inc. of BOISE, ID filed a DEF 14A with the SEC on 1997-04-28. Industry: Refuse Systems.

## Filing

- Filed: 1997-04-28
- Form: DEF 14A
- Accession: 0000950129-97-001733
- Registrant: US Ecology Holdings, Inc.
- CIK: 0000742126
- Industry (SIC): Refuse Systems (4953)
- State of incorporation: DE
- Location: BOISE, ID

## Filing timeline for this registrant (49)

_Showing 12 of 49 filings._

| Filed | Form |
| --- | --- |
| [2019-09-19](https://search.stillhousedata.com/proxy/0001047469-19-005338) | DEFM14A |
| [2019-04-11](https://search.stillhousedata.com/proxy/0001104659-19-020793) | DEFA14A |
| [2019-04-11](https://search.stillhousedata.com/proxy/0001047469-19-002145) | DEF 14A |
| [2018-04-11](https://search.stillhousedata.com/proxy/0001104659-18-023480) | DEFA14A |
| [2018-04-11](https://search.stillhousedata.com/proxy/0001047469-18-002710) | DEF 14A |
| [2017-04-12](https://search.stillhousedata.com/proxy/0001104659-17-023126) | DEFA14A |
| [2017-04-12](https://search.stillhousedata.com/proxy/0001047469-17-002557) | DEF 14A |
| [2016-04-22](https://search.stillhousedata.com/proxy/0001104659-16-113477) | DEFA14A |
| [2016-04-22](https://search.stillhousedata.com/proxy/0001047469-16-012467) | DEF 14A |
| [2015-04-15](https://search.stillhousedata.com/proxy/0001104659-15-027670) | DEFA14A |
| [2015-04-15](https://search.stillhousedata.com/proxy/0001047469-15-003547) | DEF 14A |
| [2014-04-10](https://search.stillhousedata.com/proxy/0001104659-14-027004) | DEFA14A |

## More

- [CIK 742126 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=742126&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950129-97-001733.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.