Brian Jg Pereira is President at AMAG PHARMACEUTICALS INC. (AMAG). They have made 6 open-market trades across 3 companies since 2007, most recently 2026-08-20.
CIK 0001298146
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 $465K since 2008, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMAG | 8,958 | $123K |
| PROK | 27,052 | $36K |
| AVM | 3,157 | — |
| BIOD | 18,937 | — |
| Total | $159K |
Shares reported on the most recent Form 4, priced at the 2026-08-20 close. 2 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PROK | SELL | 2026-08-18 | 2026-08-20 | $1.41 | $1.1M | +26.2% | +20.4% | — |
| PROK | SELL | 2025-11-12 | 2025-11-14 | $2.49 | $3.8M | -10.5% | -12.2% | -16.5% |
| BIOD | SELL | 2013-12-20 | 2013-12-23 | $2.26 | $11K | N/A | N/A | N/A |
| BIOD | SELL · 10b5-1 | 2011-12-16 | 2011-12-20 | $0.65 | $10K | N/A | N/A | N/A |
| AMAG | SELL | 2009-11-09 | 2009-11-12 | $43.76 | $10.1M | -23.6% | -3.6% | -3.6% |
| AMAG | SELL | 2009-08-05 | 2009-08-05 | $45.00 | $225K | -23.6% | -3.6% | -3.6% |
| BIOD | BUY | 2008-02-12 | 2008-02-14 | $15.50 | $465K | N/A | N/A | N/A |
| AMAG | SELL · 10b5-1 | 2008-02-08 | 2008-02-11 | $54.66 | $273K | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-10-01 | 2007-10-02 | $57.75 | $578K | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-09-04 | 2007-09-06 | $55.05 | $1.1M | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-08-01 | 2007-08-02 | $53.39 | $1.1M | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-07-03 | 2007-07-05 | $58.59 | $1.2M | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-06-12 | 2007-06-20 | $60.95 | $192K | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-06-04 | 2007-06-06 | $63.11 | $947K | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-05-02 | 2007-05-04 | $64.42 | $1.3M | -23.6% | -3.6% | -3.6% |
| AMAG | SELL · 10b5-1 | 2007-04-16 | 2007-04-18 | $69.64 | $1.1M | -23.6% | -3.6% | -3.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.