John D. Markley Jr. is Director at InterDigital, Inc. (IDCC). They have made 21 open-market trades across 3 companies since 2010, most recently 2026-07-22.
CIK 0001491492
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.
2 open-market purchases totalling $275K since 2010, against 19 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IDCC | SELL · 10b5-1 | 2026-06-22 | 2026-06-23 | $300.00 | $120K | +2.2% | -7.6% | +18.1% |
| IDCC | SELL · 10b5-1 | 2026-02-10 | 2026-02-12 | $374.95 | $262K | +7.0% | +1.1% | -23.7% |
| IDCC | SELL · 10b5-1 | 2025-06-17 | 2025-06-18 | $221.08 | $459K | -1.9% | -0.4% | +43.1% |
| IDCC | SELL · 10b5-1 | 2024-06-11 | 2024-06-12 | $115.28 | $86K | -1.8% | +2.8% | +11.5% |
| IDCC | SELL | 2023-06-07 | 2023-06-09 | $86.17 | $95K | +4.7% | +8.2% | -7.7% |
| IDCC | SELL | 2023-02-27 | 2023-02-28 | $73.86 | $631K | +0.8% | -0.6% | +13.2% |
| IDCC | SELL | 2022-06-06 | 2022-06-07 | $66.83 | $53K | -8.5% | -5.7% | -29.8% |
| IDCC | SELL | 2021-06-07 | 2021-06-09 | $83.24 | $67K | -6.0% | -12.6% | -13.3% |
| IDCC | SELL · 10b5-1 | 2020-07-17 | 2020-07-20 | $57.97 | $41K | -1.1% | +5.2% | -0.5% |
| IDCC | SELL · 10b5-1 | 2019-06-04 | 2019-06-04 | $64.84 | $39K | -2.9% | -0.2% | -26.3% |
| IDCC | SELL | 2018-06-15 | 2018-06-18 | $85.10 | $51K | -3.7% | -1.5% | -5.6% |
| BSFT | SELL | 2017-08-30 | 2017-09-01 | $48.00 | $144K | +4.1% | +5.5% | +12.2% |
| IDCC | SELL · 10b5-1 | 2017-06-09 | 2017-06-12 | $84.38 | $38K | -2.5% | -7.4% | -16.1% |
| BSFT | SELL | 2017-03-06 | 2017-03-08 | $42.66 | $43K | +2.4% | -9.6% | -2.7% |
| BSFT | SELL · Routine | 2017-02-22 | 2017-03-08 | $46.06 | $92K | +2.4% | -9.6% | -2.7% |
| BSFT | SELL | 2016-04-11 | 2016-04-12 | $40.79 | $82K | +0.1% | -1.5% | +8.0% |
| BSFT | SELL | 2015-11-09 | 2015-11-12 | $39.30 | $39K | -8.0% | +1.5% | -19.4% |
| BSFT | SELL | 2015-08-11 | 2015-08-11 | $34.27 | $51K | -8.0% | +1.5% | +1.5% |
| BSFT | SELL | 2015-05-12 | 2015-05-14 | $33.89 | $136K | -8.0% | +1.5% | +1.5% |
| BSFT | SELL | 2015-03-02 | 2015-03-04 | $32.24 | $97K | -8.0% | +1.5% | +1.5% |
| MM | SELL | 2013-05-14 | 2013-05-16 | $8.09 | $162K | N/A | N/A | N/A |
| BSFT | BUY | 2013-03-06 | 2013-03-07 | $22.98 | $230K | -8.0% | +1.5% | +1.5% |
| MM | SELL | 2012-10-29 | 2012-10-29 | $13.44 | $1.2M | N/A | N/A | N/A |
| BSFT | SELL | 2012-08-16 | 2012-08-16 | $38.72 | $97K | -8.0% | +1.5% | +1.5% |
| BSFT | SELL | 2012-08-10 | 2012-08-14 | $38.22 | $96K | -8.0% | +1.5% | +1.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.