Weir Mirian M. Graddick is Exe V-P & HR at MERCK SHARP & DOHME CORP. (MRK). They have made 9 open-market trades across 2 companies since 2014, most recently 2026-05-30.
CIK 0001168014
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 9 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| YUM | SELL | 2025-08-14 | 2025-08-15 | $145.30 | $592K | -1.9% | +0.5% | +1.0% |
| YUM | SELL | 2024-08-19 | 2024-08-20 | $137.40 | $360K | -1.7% | -4.5% | -2.4% |
| YUM | SELL | 2023-08-09 | 2023-08-09 | $134.46 | $358K | -3.6% | -5.3% | -6.1% |
| YUM | SELL | 2022-08-12 | 2022-08-15 | $118.30 | $287K | -0.5% | -2.2% | +4.4% |
| MRK | SELL | 2018-04-16 | 2018-04-17 | $58.00 | $1.4M | +0.1% | -0.6% | +5.4% |
| MRK | SELL | 2018-01-12 | 2018-01-19 | $61.20 | $4.2M | -2.7% | -9.7% | -3.7% |
| MRK | SELL | 2016-10-03 | 2016-10-04 | $62.07 | $2.5M | -0.9% | -6.8% | -4.1% |
| MRK | SELL | 2016-07-05 | 2016-07-05 | $57.98 | $2.6M | +2.3% | -0.7% | +7.3% |
| MRK | SELL | 2016-07-01 | 2016-07-01 | $57.49 | $1.7M | +3.2% | +1.5% | +7.1% |
| MRK | SELL · 10b5-1 | 2014-07-07 | 2014-07-08 | $59.16 | $10.7M | -2.6% | +0.9% | +0.9% |
| MRK | SELL · 10b5-1 | 2014-07-07 | 2014-07-22 | $59.16 | $10.7M | -2.6% | +0.9% | +0.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.