Form 4 for AMG AFFILIATED MANAGERS GROUP, INC.
Accepted 2026-06-08 19:23:03 ET · period of report 2026-06-08 · accession 0001004434-26-000065 · 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 | 2026-06-08 19:23 | 2026-06-08 | AMG | Horgen Jay C. | Pres, CEO, Dir | M - OptEx | $74.49 | +75.0K | 261.9K | +40% | +$5.59M |
| D | 2026-06-08 19:23 | 2026-06-08 | AMG | Horgen Jay C. | Pres, CEO, Dir | F - Tax | $336.62 | -39.7K | 222.2K | -15% | -$13.35M |
| D | 2026-06-08 19:23 | 2026-06-08 | AMG | Horgen Jay C. | Pres, CEO, Dir | S - Sale+OE | $338.27 | -17.5K | 204.7K | -8% | -$5.92M |
| D | 2026-06-08 19:23 | 2026-06-08 | AMG | Horgen Jay C. | Pres, CEO, Dir | M - OptEx | $0.00 | -75.0K | 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 | 2026-06-08 | M | A | 75,000 | $74.49 | 261,877 | D | — | — | (F1) Reflects the transfer of 150,000 shares of common stock to a grantor retained annuity trust. |
| 2 | Common | Common Stock | 2026-06-08 | F | D | 39,671 | $336.62 | 222,206 | D | — | — | |
| 3 | Common | Common Stock | 2026-06-08 | S | D | 17,500 | $338.27 | 204,706 | D | — | — | (F2) The price reflects the weighted average sales price of the shares sold; the individual transaction prices ranged from $336.33 to $341.88. Specific transaction details will be provided to the SEC upon request. |
| 4 | Derivative | Employee Stock Option (Right to Buy) | 2026-06-08 | M | D | 75,000 | $0.00 | 0 | D | $74.49 · 2024-08-15 to 2026-08-15 | 75,000 Common Stock |