Company · CIK 1651431 # Checkmate Pharmaceuticals, Inc. | CIK | [1651431](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001651431) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 2836 — Biological Products, (No Diagnostic Substances) | | Incorporated in | DE | | Business address | MA | | Listed | no ticker on SEC record today | | First annual or quarterly report | 2020-09-18 | ## Offerings 2 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-259353 | Shelf Effective | 2021-09-07 | 2022-06-01 | 3 | | 333-239932 | IPO Final prospectus | 2020-07-17 | 2020-08-07 | 4 | ## Filings 8 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2022-06-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1651431/999999999522001653/9999999995-22-001653-index.htm) Declared effective | 333-259353 | 9999999995-22-001653 | | 2021-09-15 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1651431/999999999521003553/9999999995-21-003553-index.htm) Declared effective | 333-259353 | 9999999995-21-003553 | | 2021-09-07 | [S-3](https://www.sec.gov/Archives/edgar/data/1651431/000119312521266134/0001193125-21-266134-index.htm) Shelf registered | 333-259353 | 0001193125-21-266134 | | 2020-08-07 | [424B4](https://www.sec.gov/Archives/edgar/data/1651431/000119312520213729/0001193125-20-213729-index.htm) Final prospectus | 333-239932 | 0001193125-20-213729 | | 2020-08-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1651431/999999999520002055/9999999995-20-002055-index.htm) Declared effective | 333-239932 | 9999999995-20-002055 | | 2020-08-03 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1651431/000119312520207212/0001193125-20-207212-index.htm) Amendment | 333-239932 | 0001193125-20-207212 | | 2020-07-17 | [S-1](https://www.sec.gov/Archives/edgar/data/1651431/000119312520194796/0001193125-20-194796-index.htm) Registration filed | 333-239932 | 0001193125-20-194796 | | 2020-05-13 | [DRS](https://www.sec.gov/Archives/edgar/data/1651431/000095012320004681/0000950123-20-004681-index.htm) Draft made public | 377-03169 | 0000950123-20-004681 | [All filings of this company](https://equitycapital.markets/filings?cik=1651431) · [CSV](https://equitycapital.markets/filings.csv?cik=1651431) --- Source page: https://equitycapital.markets/company/1651431 · Data: U.S. SEC EDGAR · CC BY 4.0