Figures computed from official regulatory filings — .
Ask the machine
Search and compare insider transactions, companies and their statistics in plain language. Your question becomes a query over available data, not a conversation or investment advice.
Data for TESARO, Inc. only. No web search. Global per-insider statistics are excluded.
An executed search uses one credit, even with no results. Errors and unsupported questions use no credits.
Business description unavailable in our sources.
SEC company identity · Oct 5, 2026
Open-market timeline · full history
154 buys81 sellsbar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| SEIDENBERG BETH Ctrack record | Other | $3.4M | SEC |
| SEIDENBERG BETH Ctrack record | Other | $65.1K | SEC |
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| SEIDENBERG BETH Ctrack record | Other | $12.7M | SEC |
| SEIDENBERG BETH Ctrack record | Other | $824.9K | SEC |
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| SEIDENBERG BETH Ctrack record | Other | $65.1K | SEC |
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| SEIDENBERG BETH Ctrack record | Other | $149.6M | Unusual size | SEC |
| SEIDENBERG BETH Ctrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| MOULDER LEON O JRtrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Nicholson Garry A | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Bogle Grant C. | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Hedley Mary Lynne | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Armitage James Otrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Hedley Mary Lynne | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| COLLIER EARL M JR | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Oliveira Orlando | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Armitage James Otrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Oliveira Orlando | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Armitage James Otrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |
| Alleva Lawrence Mtrack record | OtherD (derivative) | n/a (No price was disclosed in the filing) | SEC |