Adrian McDermott is President at Zendesk, Inc. (ZEN). They have made 78 open-market trades across 1 company since 2014, most recently 2026-06-10.
CIK 0001605957
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 78 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ZEN | SELL | 2022-08-17 | 2022-08-17 | $76.43 | $124K | +0.0% | +0.0% | +0.0% |
| ZEN | SELL | 2022-05-18 | 2022-05-19 | $98.64 | $160K | -9.9% | -44.0% | -23.4% |
| ZEN | SELL · 10b5-1 | 2022-05-17 | 2022-05-17 | $100.56 | $24K | +0.4% | -44.7% | -22.5% |
| ZEN | SELL | 2022-05-02 | 2022-05-04 | $120.25 | $2.3M | -20.3% | -27.4% | -39.1% |
| ZEN | SELL | 2022-02-17 | 2022-02-18 | $116.09 | $141K | +7.6% | +5.7% | -13.1% |
| ZEN | SELL | 2022-02-01 | 2022-02-02 | $99.44 | $1.9M | +19.9% | +23.4% | +24.9% |
| ZEN | SELL | 2021-11-17 | 2021-11-18 | $104.50 | $175K | +3.2% | +5.6% | +22.6% |
| ZEN | SELL | 2021-11-01 | 2021-11-03 | $103.66 | $1.9M | -0.8% | -7.0% | -3.8% |
| ZEN | SELL | 2021-08-18 | 2021-08-18 | $120.35 | $202K | +2.7% | +4.0% | -13.1% |
| ZEN | SELL | 2021-08-02 | 2021-08-04 | $129.11 | $2.4M | -5.5% | -1.6% | -17.5% |
| ZEN | SELL | 2021-06-01 | 2021-06-02 | $135.81 | $2.5M | +5.6% | +9.3% | -7.5% |
| ZEN | SELL | 2021-05-19 | 2021-05-21 | $130.27 | $336K | -4.2% | +6.6% | -12.4% |
| ZEN | SELL | 2021-05-03 | 2021-05-05 | $144.37 | $2.5M | -3.5% | -3.1% | -7.2% |
| ZEN | SELL | 2021-02-18 | 2021-02-19 | $151.18 | $244K | -8.1% | -14.2% | -12.1% |
| ZEN | SELL | 2021-02-01 | 2021-02-03 | $146.12 | $2.7M | +0.2% | -13.2% | -7.4% |
| ZEN | SELL | 2020-11-18 | 2020-11-19 | $125.94 | $203K | +4.3% | +10.7% | +20.8% |
| ZEN | SELL | 2020-11-09 | 2020-11-10 | $124.83 | $4.0M | +3.6% | +12.6% | +27.7% |
| ZEN | SELL | 2020-03-18 | 2020-03-19 | $55.60 | $103K | +2.9% | +16.3% | +32.3% |
| ZEN | SELL | 2020-02-20 | 2020-02-21 | $89.75 | $167K | -10.7% | -32.0% | -2.2% |
| ZEN | SELL | 2020-01-17 | 2020-01-21 | $86.00 | $80K | +0.2% | +2.4% | -16.1% |
| ZEN | SELL | 2020-01-06 | 2020-01-07 | $77.85 | $542K | +6.6% | +10.2% | -22.4% |
| ZEN | SELL | 2020-01-02 | 2020-01-06 | $79.97 | $279K | +4.7% | +7.8% | -24.5% |
| ZEN | SELL | 2019-12-18 | 2019-12-19 | $75.42 | $108K | +4.5% | +11.8% | -24.3% |
| ZEN | SELL | 2019-12-06 | 2019-12-09 | $75.56 | $527K | +1.4% | +6.2% | -9.5% |
| ZEN | SELL | 2019-11-22 | 2019-11-25 | $79.99 | $279K | -4.1% | -1.7% | +6.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.