Robert J. Perez is CEO at CUBIST PHARMACEUTICALS INC (CBST). They have made 28 open-market trades across 2 companies since 2008, most recently 2023-05-22.
CIK 0001263230
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $80K since 2015, against 27 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CDTX | BUY | 2015-04-20 | 2015-04-21 | $16.00 | $80K | -19.6% | +2.3% | +2.3% |
| CBST | SELL | 2014-08-18 | 2014-08-18 | $63.68 | $64K | N/A | N/A | N/A |
| CBST | SELL | 2014-05-15 | 2014-05-15 | $67.50 | $102K | N/A | N/A | N/A |
| CBST | SELL | 2014-05-14 | 2014-05-14 | $69.00 | $166K | N/A | N/A | N/A |
| CBST | SELL | 2014-02-27 | 2014-02-28 | $80.18 | $2.4M | N/A | N/A | N/A |
| CBST | SELL | 2014-02-18 | 2014-02-19 | $75.00 | $263K | N/A | N/A | N/A |
| CBST | SELL | 2014-01-15 | 2014-01-15 | $74.95 | $750K | N/A | N/A | N/A |
| CBST | SELL | 2014-01-13 | 2014-01-14 | $72.95 | $730K | N/A | N/A | N/A |
| CBST | SELL | 2013-11-25 | 2013-11-27 | $69.33 | $2.8M | N/A | N/A | N/A |
| CBST | SELL | 2013-08-16 | 2013-08-16 | $60.55 | $62K | N/A | N/A | N/A |
| CBST | SELL | 2013-05-20 | 2013-05-22 | $49.98 | $750K | N/A | N/A | N/A |
| CBST | SELL | 2013-05-16 | 2013-05-17 | $47.88 | $72K | N/A | N/A | N/A |
| CBST | SELL | 2013-05-15 | 2013-05-16 | $48.41 | $72K | N/A | N/A | N/A |
| CBST | SELL | 2013-05-14 | 2013-05-15 | $49.18 | $115K | N/A | N/A | N/A |
| CBST | SELL | 2013-04-02 | 2013-04-02 | $47.98 | $720K | N/A | N/A | N/A |
| CBST | SELL | 2013-02-19 | 2013-02-20 | $41.40 | $90K | N/A | N/A | N/A |
| CBST | SELL | 2012-08-24 | 2012-08-27 | $45.97 | $1.4M | N/A | N/A | N/A |
| CBST | SELL | 2012-05-15 | 2012-05-16 | $41.88 | $110K | N/A | N/A | N/A |
| CBST | SELL | 2012-05-14 | 2012-05-15 | $41.55 | $89K | N/A | N/A | N/A |
| CBST | SELL | 2012-03-26 | 2012-03-28 | $44.73 | $1.8M | N/A | N/A | N/A |
| CBST | SELL | 2012-01-12 | 2012-01-17 | $41.97 | $718K | N/A | N/A | N/A |
| CBST | SELL | 2012-01-10 | 2012-01-11 | $40.99 | $590K | N/A | N/A | N/A |
| CBST | SELL | 2011-12-20 | 2011-12-21 | $39.48 | $987K | N/A | N/A | N/A |
| CBST | SELL | 2010-04-16 | 2010-04-20 | $23.98 | $240K | N/A | N/A | N/A |
| CBST | SELL | 2008-12-02 | 2008-12-03 | $25.98 | $113K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.