AMG Stock: Insider Activity, Filings & Research

Affiliated Managers Group, Inc. (AMG)Drillr’s hub for AMG insider activity, SEC filings, earnings signals and AI research. Over the trailing 3 months, AMG insiders filed 1 open-market buy and 4 sales (SEC Form 4).

AMG insider trading activity (SEC Form 4)

Sentiment
9/100
Buys (3m)
1
Sells (3m)
4
Net (3m)
-$3.8M
Insiders buying
Insider trades by month Buys Sells
Aug
Sep
Mar
May
Context3-month price +2.8%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
May 8, 2026Ryan David ChristopherdirectorSell3,402$305.06
May 8, 2026Matos Rodriguez Felix V.directorSell1,000$300.18
May 6, 2026Cates G. StaleydirectorBuy1,500$305.83
May 5, 2026Cates G. StaleydirectorGrant172
Mar 9, 2026Ryan David ChristopherdirectorOption867
Mar 9, 2026RITCHEA DAVAofficer: Chief Financial OfficerTax292$299.18
Mar 9, 2026Alvingham Karen L.directorGrant171
Mar 9, 2026Padiyar Kavitaofficer: General Counsel & Corp. Sec.Grant1,191
Mar 9, 2026STARR LOREN MdirectorGrant257
Mar 9, 2026FRANQUI ANNETTEdirectorGrant335
Mar 9, 2026Ryan David ChristopherdirectorGrant335
Mar 9, 2026Horgen Jay C.director, officer: Chief Executive OfficerGrant8,544
Mar 9, 2026Horgen Jay C.director, officer: Chief Executive OfficerGrant27,260
Mar 9, 2026Palandjian Tracy P.directorOption867
Mar 9, 2026Horgen Jay C.director, officer: Chief Executive OfficerTax18,333$299.18

Source: AMG SEC Form 4 filings, latest May 8, 2026. For informational purposes only — not investment advice.

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