Company · CIK 1708035

# Ecovyst Inc.

| CIK | [1708035](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001708035) (SEC EDGAR) |
| --- | --- |
| Industry (SIC) | 2800 — Chemicals & Allied Products |
| Incorporated in | DE |
| Business address | PA |
| Listed | ECVT (NYSE) |
| First annual or quarterly report | 2017-11-14 |

## Offerings

 2 registrations

| Registration | Label and status | First filed | Last event | Filings |
| --- | --- | --- | --- | --- |
| 333-255514 | Shelf Effective | 2021-04-26 | 2021-04-26 | 1 |
| 333-218650 | IPO Final prospectus | 2017-06-09 | 2017-10-02 | 9 |

## Filings

 10

| Filed | Filing | Registration | Accession |
| --- | --- | --- | --- |
| 2021-04-26 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1708035/000119312521131548/0001193125-21-131548-index.htm) Shelf registered | 333-255514 | 0001193125-21-131548 |
| 2017-10-02 | [424B4](https://www.sec.gov/Archives/edgar/data/1708035/000119312517301075/0001193125-17-301075-index.htm) Final prospectus | 333-218650 | 0001193125-17-301075 |
| 2017-09-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1708035/999999999517002492/9999999995-17-002492-index.htm) Declared effective | 333-218650 | 9999999995-17-002492 |
| 2017-09-25 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1708035/000119312517293175/0001193125-17-293175-index.htm) Amendment | 333-218650 | 0001193125-17-293175 |
| 2017-09-25 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1708035/000119312517291941/0001193125-17-291941-index.htm) Amendment | 333-218650 | 0001193125-17-291941 |
| 2017-09-19 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1708035/000119312517287819/0001193125-17-287819-index.htm) Amendment | 333-218650 | 0001193125-17-287819 |
| 2017-09-01 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1708035/000119312517275733/0001193125-17-275733-index.htm) Amendment | 333-218650 | 0001193125-17-275733 |
| 2017-08-14 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1708035/000119312517257362/0001193125-17-257362-index.htm) Amendment | 333-218650 | 0001193125-17-257362 |
| 2017-07-18 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1708035/000119312517230426/0001193125-17-230426-index.htm) Amendment | 333-218650 | 0001193125-17-230426 |
| 2017-06-09 | [S-1](https://www.sec.gov/Archives/edgar/data/1708035/000119312517200219/0001193125-17-200219-index.htm) Registration filed | 333-218650 | 0001193125-17-200219 |

[All filings of this company](https://equitycapital.markets/filings?cik=1708035) · [CSV](https://equitycapital.markets/filings.csv?cik=1708035)

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Source page: https://equitycapital.markets/company/1708035 · Data: U.S. SEC EDGAR · CC BY 4.0