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sellWeak

Thomas M Wojcik sold $3.7M of AMG

President and COO at AFFILIATED MANAGERS GROUP, INC.. 16,000 shares at an average of $231.03, traded Sep 9, 2025, filed Sep 9, 2025.

Warning score
30
Value
$3.7M
16,000 shares
Holdings after
158,710
-9% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    President
    +20
  • Trade size
    $3.7M at market
    +25
  • Share of holdings sold
    Sold 9.2% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +4.3%, 3m +16.9%, 6m +21.1%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

AMGOct 9, 2026 · close 387.26
Since filing Sep 9, 2025: +67.0%SPY +21.3% · excess +45.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001127602-25-021240, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 8, 2025MOption exercise
Common Stock
+169,303$74.49$13M288,718Sep 9, 2025
Sep 8, 2025FTax withholding
Common Stock
-114,008$231.19$26M174,710Sep 9, 2025
Sep 9, 2025SOpen-market sale
Common Stock
-16,000$231.03$3.7M158,710Sep 9, 2025
Sep 8, 2025MOption exercise
Employee Stock Option (Right to Buy)derivative
-169,303$0.00$01,342Sep 9, 2025

Related signals

Other insiders at AFFILIATED MANAGERS GROUP, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
35Weak
AMGsell
AFFILIATED MANAGERS GROUP, INC.
Jay C. Horgen
President and CEO
$5.9M
17,500 shares
-8%
38Weak
AMGbuy
AFFILIATED MANAGERS GROUP, INC.
Annette Franqui
director
$229k
750 shares
+62%
68Notable
AMGsell 2
AFFILIATED MANAGERS GROUP, INC.
David Christopher Ryan
director
$1.0M
3,402 shares
-76%
42Moderate
AMGsell 2
AFFILIATED MANAGERS GROUP, INC.
Rodriguez Felix V. Matos
director
$300k
1,000 shares
-19%
38Weak
AMGbuy
AFFILIATED MANAGERS GROUP, INC.
G. Staley Cates
director
$459k
1,500 shares
+31%
28Weak
AMGsell 2
AFFILIATED MANAGERS GROUP, INC.
Kavita Padiyar
General Counsel & Corp. Sec.
$612k
2,200 shares
-5%
48Moderate
AMGsell 2
AFFILIATED MANAGERS GROUP, INC.
Thomas M Wojcik
President and COO
$2.3M
8,000 shares
-5%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Thomas M Wojcik sold $3.7M of AMG | InsiderTell