Rita A. Karachun is VP & Controller at Merck & Co., Inc. (MRK). They have made 6 open-market trades across 1 company since 2017, most recently 2026-06-05.
CIK 0001601572
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 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MRK | SELL | 2023-05-04 | 2023-05-05 | $117.53 | $3.7M | -2.0% | -3.4% | -9.7% |
| MRK | SELL | 2022-10-28 | 2022-11-01 | $100.34 | $6.4M | -1.7% | +10.2% | +6.5% |
| MRK | SELL | 2021-11-03 | 2021-11-04 | $88.45 | $2.2M | +2.2% | -10.8% | -0.3% |
| MRK | SELL | 2019-02-14 | 2019-02-14 | $78.96 | $10.2M | +1.2% | +2.1% | -2.6% |
| MRK | SELL | 2018-08-02 | 2018-08-02 | $65.01 | $325K | +1.9% | +4.2% | +12.9% |
| MRK | SELL | 2017-02-14 | 2017-02-15 | $64.73 | $382K | +1.1% | -1.9% | -2.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.