# ONYX PHARMACEUTICALS INC — SC TO-T/A

ONYX PHARMACEUTICALS INC of SOUTH SAN FRANCISCO, CA filed a SC TO-T/A with the SEC on 2013-09-19. Industry: Biological Products, (No Diagnostic Substances).

## Filing

- Filed: 2013-09-19
- Form: SC TO-T/A
- Accession: 0001193125-13-371936
- Registrant: ONYX PHARMACEUTICALS INC
- CIK: 0001012140
- Industry (SIC): Biological Products, (No Diagnostic Substances) (2836)
- State of incorporation: DE
- Location: SOUTH SAN FRANCISCO, CA

## Documents (1)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | SC TO-T/A | AMENDMENT NO. 5 TO SCHEDULE TO-T |

## Filing timeline for this registrant (52)

_Showing 12 of 52 filings._

| Filed | Form |
| --- | --- |
| [2013-10-01](https://search.stillhousedata.com/proxy/0001193125-13-385868) | SC 14D9/A |
| [2013-10-01](https://search.stillhousedata.com/proxy/0001193125-13-385864) | SC TO-T/A |
| [2013-09-27](https://search.stillhousedata.com/proxy/0001193125-13-380623) | SC 14D9/A |
| [2013-09-27](https://search.stillhousedata.com/proxy/0001193125-13-380609) | SC TO-T/A |
| [2013-09-24](https://search.stillhousedata.com/proxy/0001193125-13-376455) | SC 14D9/A |
| [2013-09-24](https://search.stillhousedata.com/proxy/0001193125-13-376404) | SC TO-T/A |
| [2013-09-23](https://search.stillhousedata.com/proxy/0001193125-13-373553) | SC TO-T/A |
| [2013-09-20](https://search.stillhousedata.com/proxy/0001193125-13-373535) | SC 14D9/A |
| [2013-09-20](https://search.stillhousedata.com/proxy/0001193125-13-373484) | SC TO-T/A |
| [2013-09-19](https://search.stillhousedata.com/proxy/0001193125-13-371948) | SC 14D9/A |
| 2013-09-19 | SC TO-T/A |
| [2013-09-19](https://search.stillhousedata.com/proxy/0001193125-13-370767) | SC 14D9/A |

## Co-filers (1)

- AMGEN INC

## More

- [CIK 1012140 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1012140&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0001193125-13-371936.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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