Peter N. Kellogg is Exe V-P & CFO at Merck & Co. Inc. (MRK). They have made 1 open-market trade across 1 company since 2006, most recently 2026-05-20.
CIK 0001226287
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 $502K since 2011, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MRK | BUY | 2011-08-12 | 2011-08-15 | $31.80 | $502K | -2.6% | +0.9% | +0.9% |
| BIIB | SELL · 10b5-1 | 2007-03-20 | 2007-03-22 | $44.48 | $323K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2007-02-13 | 2007-02-15 | $49.22 | $502K | -11.0% | -1.9% | -1.9% |
| BIIB | SELL · 10b5-1 | 2006-09-19 | 2006-09-20 | $42.79 | $943K | -11.0% | -1.9% | -1.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.