Stephen Cohen is Director at BlackRock, Inc. (BLK). They have made 6 open-market trades across 2 companies since 2006, most recently 2026-02-23.
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 $19K since 2006, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BLK | 5,661 | $6.9M |
| OSCI | 101,529 | — |
| Total | $6.9M |
Shares reported on the most recent Form 4, priced at the 2026-02-25 close. 1 holding could not be priced and is 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 |
|---|---|---|---|---|---|---|---|---|
| BLK | SELL | 2026-02-23 | 2026-02-25 | $1069.56 | $241K | -12.9% | -15.1% | -2.1% |
| BLK | SELL | 2026-02-11 | 2026-02-13 | $1073.87 | $2.3M | +1.5% | -12.2% | +2.8% |
| BLK | SELL | 2024-02-12 | 2024-02-14 | $805.55 | $1.5M | +1.5% | +1.8% | +1.8% |
| BLK | SELL | 2023-02-03 | 2023-02-03 | $756.26 | $590K | -3.1% | -7.8% | -15.4% |
| BLK | SELL | 2023-01-30 | 2023-02-01 | $753.46 | $1.7M | -3.5% | -9.0% | -14.7% |
| OSCI | BUY | 2006-05-22 | 2006-05-22 | $1.29 | $19K | 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.