What is a Form 4?
A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.
The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.
Issuer relationships
A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.
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| Ardea Biosciences, Inc./DE | 0001103390 | IBPI, RDEA | No | Yes |
| VIROPHARMA INC | 0000946840 | VPHM | No | No |
| IDERA PHARMACEUTICALS, INC. | 0000861838 | IDP | No | No |
| TAPESTRY PHARMACEUTICALS, INC | 0000891504 | TPPH | No | No |
| SEATTLE GENETICS INC /WA | 0001060736 | SGEN | No | Yes |
| GENOMIC HEALTH INC | 0001131324 | GHDX | No | Yes |
| ALLOS THERAPEUTICS INC | 0001097264 | ALTH | No | No |
| INCYTE CORP | 0000879169 | INCY | No | Yes |
| Synvista Therapeutics, Inc. | 0000878903 | ALT | No | No |
| BIOCRYST PHARMACEUTICALS INC | 0000882796 | BCRX | No | No |
| AP PHARMA INC /DE/ | 0000818033 | APPA | No | No |
| AUXILIUM PHARMACEUTICALS INC | 0001182129 | AUXL | No | No |
| ADOLOR CORP | 0001076167 | ADLR | No | No |
| VAXGEN INC | 0001036968 | VXGN.OB | No | No |
| SYNAGEVA BIOPHARMA CORP | 0000911326 | TRMS, GEVA | No | Yes |
| PHARMACYCLICS INC | 0000949699 | PCYC | No | No |
| XOMA Corp | 0000791908 | XOMA | No | No |
| TRANZYME INC | 0001274644 | TZYM | No | No |
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Recent SEC transactions
Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.
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Up to 50 transactions from the recent two-year owner window.
Source evidence and strategy eligibility
The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.
Inspect the coverage status above, the filing availability dates and amendment links when defining a historical signal. Follow the issuer CIK and SEC accession to the source transaction.