Form 4 for AMG AFFILIATED MANAGERS GROUP, INC.
Accepted 2025-09-04 00:00:00 ET · period of report 2025-09-02 · accession 0001127602-25-021195 · 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 | 2025-09-04 | 2025-09-02 | AMG | Horgen Jay C. | CEO, Dir | M - OptEx | $74.49 | +75.0K | 559.3K | +15% | +$5.59M |
| D | 2025-09-04 | 2025-09-02 | AMG | Horgen Jay C. | CEO, Dir | F - Tax | $229.97 | -44.9K | 514.4K | -8% | -$10.33M |
| D | 2025-09-04 | 2025-09-02 | AMG | Horgen Jay C. | CEO, Dir | M - OptEx | $0.00 | -75.0K | 75.0K | -50% | $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 | 2025-09-02 | M | A | 75,000 | $74.49 | 559,322 | D | — | — | |
| 2 | Common | Common Stock | 2025-09-02 | F | D | 44,935 | $229.97 | 514,387 | D | — | — | |
| 3 | Derivative | Employee Stock Option (Right to Buy) | 2025-09-02 | M | D | 75,000 | $0.00 | 75,000 | D | $74.49 · 2024-08-15 to 2026-08-15 | 75,000 Common Stock |