Form 4 for AJG Arthur J. Gallagher & Co.
Accepted 2025-12-23 00:00:00 ET · period of report 2025-12-19 · accession 0000354190-25-000056 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-12-23 | 2025-12-19 | AJG | Bay Walter D. | GC | M - OptEx | $79.59 | +15.8K | 95.4K | +20% | +$1.26M |
| D | 2025-12-23 | 2025-12-19 | AJG | Bay Walter D. | GC | S - Sale+OE | $255.00 | -15.8K | 79.5K | -17% | -$4.04M |
| D | 2025-12-23 | 2025-12-19 | AJG | Bay Walter D. | GC | G - Gift | $0.00 | -1,724 | 77.8K | -2% | $0 |
| D | 2025-12-23 | 2025-12-19 | AJG | Bay Walter D. | GC | M - OptEx | $0.00 | -15.8K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-12-19 | M | A | 15,850 | $79.59 | 95,399 | D | — | — | |
| 2 | Common | Common Stock | 2025-12-19 | S | D | 15,850 | $255.00 | 79,549 | D | — | — | |
| 3 | Common | Common Stock | 2025-12-19 | G | D | 1,724 | $0.00 | 77,825 | D | — | — | |
| 4 | Derivative | Non-qualified Stock Option | 2025-12-19 | M | D | 15,850 | $0.00 | 0 | D | $79.59 · — to 2026-03-14 | 15,850 Common Stock | (F3) One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date. |