Jennifer Zachary is CLO & VP at Merck & Co., Inc. (MRK). They have made 6 open-market trades across 1 company since 2022, most recently 2026-08-12.
CIK 0001737231
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 | Shares | Value |
|---|---|---|
| MRK | 45,509 | $6.6M |
| RGNX | 31,871 | $221K |
| Total | $6.9M |
Shares reported on the most recent Form 4, priced at the 2026-08-13 close.
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 |
|---|---|---|---|---|---|---|---|---|
| MRK | SELL | 2026-08-12 | 2026-08-13 | $133.46 | $10.7M | +16.6% | +8.0% | — |
| MRK | SELL | 2026-02-09 | 2026-02-09 | $119.15 | $14.5M | +3.9% | -1.3% | -5.4% |
| MRK | SELL | 2024-02-02 | 2024-02-02 | $126.97 | $12.6M | -0.9% | -2.3% | +1.0% |
| MRK | SELL | 2023-05-04 | 2023-05-05 | $117.59 | $4.5M | -2.0% | -3.4% | -9.7% |
| MRK | SELL | 2023-02-03 | 2023-02-06 | $103.17 | $15.6M | +2.7% | +4.4% | +14.2% |
| MRK | SELL | 2022-10-28 | 2022-11-01 | $99.38 | $32.8M | -1.7% | +10.2% | +6.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.