Eric K. Rowinsky is Director at BIOGEN INC. (BIIB). They have made 9 open-market trades across 5 companies since 2011, most recently 2026-06-09.
CIK 0001318886
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.
4 open-market purchases totalling $259K since 2011, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BIIB | BUY | 2024-02-15 | 2024-02-20 | $222.54 | $203K | -0.2% | -0.3% | +4.6% |
| FBIO | BUY | 2023-02-10 | 2023-02-14 | $0.84 | $10K | +10.3% | +8.8% | +4.0% |
| FBIO | SELL | 2021-02-05 | 2021-04-09 | $4.24 | $127K | -28.2% | -35.4% | -42.1% |
| VSTM | BUY | 2017-09-05 | 2024-01-24 | $3.84 | $8K | +12.0% | +15.7% | -12.5% |
| STML | SELL | 2015-04-27 | 2015-04-28 | $15.77 | $171K | -23.8% | -2.4% | -2.4% |
| BIIB | SELL · 10b5-1 | 2015-03-20 | 2015-03-23 | $475.00 | $5.5M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2015-03-19 | 2015-03-20 | $436.14 | $1.0M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2015-03-17 | 2015-03-18 | $425.45 | $2.0M | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2015-03-09 | 2015-03-11 | $417.23 | $1.9M | -11.0% | -1.9% | -1.9% |
| STML | SELL | 2015-02-18 | 2015-02-20 | $13.99 | $23K | -23.8% | -2.4% | -2.4% |
| STML | SELL | 2014-04-25 | 2014-04-28 | $15.03 | $168K | -23.8% | -2.4% | -2.4% |
| BIIB | SELL · 10b5-1 | 2014-01-21 | 2014-01-22 | $310.09 | $626K | -11.0% | -1.9% | -1.9% |
| STML | SELL | 2013-11-25 | 2013-11-27 | $20.56 | $286K | -23.8% | -2.4% | -2.4% |
| BIIB | SELL · 10b5-1 | 2012-01-06 | 2012-01-09 | $116.00 | $1.5M | -11.0% | -1.9% | -1.9% |
| NEOP | BUY | 2011-08-19 | 2011-08-23 | $2.55 | $38K | 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.
| — |
| NEOP | 15,000 | — |
| Total | $8.3M |