Michael Nally is CMO & EVP at Merck & Co., Inc. (MRK). They have made 1 open-market trade across 1 company since 2026, most recently 2026-03-04.
CIK 0001763945
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 $240K since 2026, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GENB | 572,707 | $6.9M |
| MRK | 19,630 | $2.9M |
| PPG | 264 | $28K |
| Total | $9.8M |
Shares reported on the most recent Form 4, priced at the 2026-03-06 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 |
|---|---|---|---|---|---|---|---|---|
| GENB | BUY | 2026-03-04 | 2026-03-06 | $12.00 | $240K | -2.3% | -0.0% | +21.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.