William F. Ziebell is President & VP at GALLAGHER ARTHUR J & CO (AJG). They have made 8 open-market trades across 1 company since 2017, most recently 2026-03-31.
CIK 0001695709
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 | Shares | Value |
|---|---|---|
| AJG | 48,684 | $12.4M |
Shares reported on the most recent Form 4, priced at the 2026-04-02 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AJG | SELL | 2025-02-18 | 2025-02-19 | $324.41 | $4.6M | +4.8% | +1.8% | +4.4% |
| AJG | SELL | 2023-11-03 | 2023-11-07 | $241.22 | $9.7M | +0.7% | -1.1% | -3.1% |
| AJG | SELL | 2022-06-16 | 2022-06-21 | $149.43 | $6.1M | +7.2% | +10.4% | +18.1% |
| AJG | SELL | 2021-06-15 | 2021-06-17 | $144.71 | $1.9M | +1.3% | -2.0% | +7.8% |
| AJG | SELL | 2020-08-06 | 2020-08-10 | $105.29 | $2.4M | -1.5% | -4.4% | +1.8% |
| AJG | SELL | 2018-09-13 | 2018-09-14 | $74.78 | $935K | -1.3% | -5.6% | +0.5% |
| AJG | SELL | 2018-02-27 | 2018-03-01 | $69.61 | $620K | +4.9% | -1.2% | -1.4% |
| AJG | SELL | 2017-05-24 | 2017-05-25 | $56.59 | $879K | -0.9% | -1.0% | +1.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.