Errol G. Samuelson is Chief Industry Dev. Officer at ZILLOW INC (Z). They have made 33 open-market trades across 2 companies since 2013, most recently 2026-08-13.
CIK 0001382072
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 33 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| Z | 130,885 | $4.0M |
| MOVE | 97,172 | $802K |
| Total | $4.8M |
Shares reported on the most recent Form 4, priced at the 2026-08-17 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| Z | SELL | 2026-08-13 | 2026-08-17 | $34.24 | $108K | +3.0% | -8.9% | — |
| Z | SELL | 2026-05-14 | 2026-05-15 | $37.97 | $112K | -6.1% | -14.2% | -4.7% |
| Z | SELL · 10b5-1 | 2026-03-26 | 2026-03-26 | $44.20 | $419K | +0.3% | +10.4% | -26.0% |
| Z | SELL | 2026-02-12 | 2026-02-13 | $44.21 | $310K | +6.1% | -3.6% | -15.0% |
| Z | SELL | 2025-11-12 | 2025-11-14 | $71.13 | $543K | +8.8% | -0.0% | -35.9% |
| Z | SELL | 2025-08-13 | 2025-08-15 | $81.51 | $588K | -0.5% | +2.9% | -16.8% |
| Z | SELL | 2025-05-14 | 2025-05-16 | $68.63 | $478K | -2.3% | +4.3% | +25.4% |
| Z | SELL · 10b5-1 | 2025-03-26 | 2025-03-27 | $73.34 | $209K | -14.2% | -7.1% | -3.5% |
| Z | SELL | 2025-02-13 | 2025-02-14 | $77.72 | $541K | -4.6% | -11.3% | -14.6% |
| Z | SELL | 2024-11-19 | 2024-11-21 | $73.57 | $1.3M | +0.7% | -6.3% | -2.5% |
| Z | SELL | 2024-11-13 | 2024-11-15 | $73.97 | $515K | +17.7% | +12.5% | +8.4% |
| Z | SELL | 2024-08-14 | 2024-08-15 | $52.85 | $370K | +9.1% | +19.1% | +42.1% |
| Z | SELL | 2024-05-15 | 2024-05-17 | $44.17 | $396K | -10.9% | +6.4% | +21.2% |
| Z | SELL · 10b5-1 | 2024-03-26 | 2024-03-28 | $49.60 | $209K | -7.8% | -10.8% | -5.0% |
| Z | SELL | 2024-02-14 | 2024-02-16 | $58.01 | $353K | +3.9% | -11.8% | -17.2% |
| Z | SELL | 2023-11-15 | 2023-11-16 | $40.85 | $268K | +3.7% | +38.0% | +42.4% |
| Z | SELL | 2023-08-30 | 2023-08-31 | $52.66 | $1.0M | -5.0% | -13.1% | -19.4% |
| Z | SELL | 2023-08-16 | 2023-08-18 | $53.71 | $305K | +3.3% | -7.3% | -19.9% |
| Z | SELL | 2023-05-17 | 2023-05-19 | $44.66 | $270K | +1.5% | +5.7% | +11.9% |
| Z | SELL · 10b5-1 | 2023-03-27 | 2023-03-28 | $42.95 | $180K | +4.0% | -1.6% | +14.0% |
| Z | SELL | 2023-02-15 | 2023-02-16 | $46.36 | $222K | -11.7% | -13.5% | -2.7% |
| Z | SELL | 2022-11-16 | 2022-11-18 | $36.78 | $213K | +9.9% | -1.4% | +37.4% |
| Z | SELL | 2022-08-17 | 2022-08-19 | $36.44 | $187K | +2.4% | +0.7% | +14.1% |
| Z | SELL | 2022-05-18 | 2022-05-19 | $41.21 | $154K | -10.2% | -31.5% | -18.3% |
| Z | SELL | 2022-03-29 | 2022-03-29 | $55.28 | $165K | -12.0% | -24.2% | -37.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.