InsiderTrades

Form 4 for AMG AFFILIATED MANAGERS GROUP, INC.

Accepted 2025-08-18 00:00:00 ET · period of report 2025-08-15 · accession 0001127602-25-020597 · 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 2025-08-18 2025-08-15 AMG Palandjian Tracy P. Dir M - OptEx $0.00 +1,117 17.9K +7% $0
D 2025-08-18 2025-08-15 AMG Palandjian Tracy P. Dir M - OptEx $0.00 -1,117 2,837 -28% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-08-15 M A 1,117 $0.00 17,886 D — — (F1) Reflects the vesting of previously reported awards. Awards vest 2022-2027.
2 Derivative Stock Units 2025-08-15 M D 1,117 $0.00 2,837 D — · — to — 1,117 Common Stock (F2) Inclusive of previously reported deferred stock units. (F1) Reflects the vesting of previously reported awards. Awards vest 2022-2027.