Janice K. Mahon is VP at UNIVERSAL DISPLAY CORP \PA\ (OLED). They have made 8 open-market trades across 2 companies since 2009, most recently 2026-03-07.
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 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| OLED | SELL | 2020-11-04 | 2020-11-06 | $204.88 | $2.1M | -0.9% | +9.5% | +7.8% |
| OLED | SELL | 2019-05-07 | 2019-05-09 | $170.16 | $6.8M | -0.9% | +5.4% | +28.6% |
| OLED | SELL | 2016-11-11 | 2016-11-14 | $60.05 | $1.3M | -7.8% | -7.6% | +4.1% |
| OLED | SELL | 2016-03-01 | 2016-03-03 | $50.00 | $667K | +3.6% | +11.5% | +38.7% |
| OLED | SELL · 10b5-1 | 2015-07-06 | 2015-07-07 | $51.07 | $1.0M | -9.0% | -0.3% | -0.3% |
| OLED | SELL · 10b5-1 | 2015-03-17 | 2015-03-18 | $43.61 | $205K | -9.0% | -0.3% | -0.3% |
| OLED | SELL · 10b5-1 | 2013-08-13 | 2013-08-15 | $35.00 | $663K | -9.0% | -0.3% | -0.3% |
| PANL | SELL · 10b5-1 | 2012-05-01 | 2012-05-03 | $45.00 | $48K | -5.7% | +1.5% | +1.5% |
| PANL | SELL · 10b5-1 | 2011-09-16 | 2011-09-20 | $58.03 | $1.2M | -5.7% | +1.5% | +1.5% |
| PANL | SELL | 2011-08-29 | 2011-08-31 | $51.13 | $895K | -5.7% | +1.5% | +1.5% |
| PANL | SELL | 2010-12-13 | 2010-12-14 | $29.96 | $225K | -5.7% | +1.5% | +1.5% |
| PANL | SELL | 2010-06-09 | 2010-06-10 | $18.25 | $68K | -5.7% | +1.5% | +1.5% |
| PANL | SELL | 2009-09-15 | 2009-09-15 | $12.11 | $91K | -5.7% | +1.5% | +1.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.