Arkolith/Insider Trading/AMG/Form 4

Horgen Jay C.

Chief Executive Officer, DirectorAFFILIATED MANAGERS GROUP, INC. (AMG) · full profile →Form 4 · filed Aug 14, 2025
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
2 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Aug 12, 2025Tax withholding(F)46K$219.70$10.0M484K
Aug 12, 2025Option exercise(M)75K$74.49$5.6M530K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Aug 12, 2025Option exercise(M)75K—$0150K

Transaction Codes

F
Shares withheld for taxes
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001127602-25-020463) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML