Susan H. Alexander is CLO & VP +1 at BIOGEN INC. (BIIB). They have made 4 open-market trades across 1 company since 2008, most recently 2026-02-06.
CIK 0001263839
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.
0 open-market purchases, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BIIB | SELL | 2022-10-27 | 2022-10-28 | $280.70 | $3.1M | -0.3% | +3.0% | +3.0% |
| BIIB | SELL | 2017-07-25 | 2017-07-26 | $290.01 | $2.9M | -1.4% | -3.4% | +7.0% |
| BIIB | SELL | 2017-07-19 | 2017-07-20 | $285.00 | $2.2M | +3.9% | +1.0% | +23.0% |
| BIIB | SELL · 10b5-1 | 2012-08-02 | 2012-08-03 | $142.99 | $167K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-07-27 | 2012-07-30 | $150.00 | $8.7M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-06-15 | 2012-06-18 | $140.00 | $7.0M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-05-02 | 2012-05-03 | $135.00 | $2.7M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-04-25 | 2012-04-26 | $130.00 | $2.2M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-04-04 | 2012-04-06 | $130.00 | $421K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-02-27 | 2012-02-28 | $115.43 | $491K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2012-02-24 | 2012-02-27 | $115.53 | $248K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL | 2012-02-13 | 2012-02-14 | $118.01 | $335K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2011-08-02 | 2011-08-03 | $102.04 | $119K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2011-05-02 | 2011-05-03 | $97.20 | $2.0M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2008-07-22 | 2008-07-24 | $70.00 | $140K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2008-07-08 | 2008-07-09 | $60.00 | $516K | -11.0% | -1.9% | -1.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.