Mark Guinan is President & CFO +1 at QUEST DIAGNOSTICS INC (DGX). They have made 6 open-market trades across 1 company since 2014, most recently 2024-01-31.
CIK 0001505998
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 $222K since 2014, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DGX | SELL | 2020-12-24 | 2020-12-28 | $120.37 | $19.7M | +3.4% | +5.2% | +7.6% |
| DGX | SELL | 2020-06-08 | 2020-06-10 | $117.23 | $17.0M | -2.2% | +4.0% | -4.4% |
| DGX | SELL | 2019-06-13 | 2019-06-17 | $100.00 | $7.3M | -1.9% | -2.3% | +3.1% |
| DGX | SELL | 2018-05-25 | 2018-05-29 | $105.71 | $13.0M | +3.0% | +3.5% | +3.6% |
| DGX | SELL | 2015-02-17 | 2015-02-18 | $71.74 | $20K | -4.9% | +0.9% | +0.9% |
| DGX | BUY | 2014-05-05 | 2014-05-07 | $55.51 | $222K | -4.9% | +0.9% | +0.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.