InsiderTrades

Form 4 for AMG AFFILIATED MANAGERS GROUP, INC.

Accepted 2026-05-06 19:27:06 ET · period of report 2026-05-06 · accession 0001004434-26-000053 · 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
2026-05-06 19:27 2026-05-06 AMG Cates G. Staley Dir P - Purchase $305.83 +1,500 6,405 +31% +$458.7K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-05-06 P A 1,500 $305.83 6,405 D — —