Transaction · 0001004434-26-000023

STARR LOREN M

STARR LOREN M, DIR, reported a transaction classified as exercise at AFFILIATED MANAGERS GROUP, INC. involving 652.000000 shares for an estimated $0.00. Reported holdings after the transaction were 2362.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

exerciseSEC transaction code MDIR
AMGAFFILIATED MANAGERS GROUP, INC.
Filing timeMar 09
Trade dateMar 05, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$312.92
Pre-filing
1mo ago +1.1%1w ago +1.1%1d ago +0.0%
Returns since
7d +0.0%30d -12.6%90d +7.6%180d +18.5%1y +18.5%

AMG price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
AMG since 2026-03-09Filed 179 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001004434-26-000023
Stock Units
Transaction date
Mar 05, 2026
Filed Mar 09, 2026, 12:00 AM · 4d delay
Shares
652 sh
$0 per share
Estimated value
$0
Computed from shares × price
Holdings after
2.36k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Derivative Transaction Direct Ownership Large Holdings Reduction
-10score
Filing-only score

-10

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Reflects the vesting of previously reported awards. Awards vest 2025-2028.

  2. F2

    Inclusive of previously reported deferred stock units.

  3. F3

    Each stock unit represents a right to receive one share of the Company's common stock upon vesting. The stock units vest in full on March 5, 2027.

  4. F4

    Reflects cash fees that the director has elected to defer under the Company's deferred compensation plan, which are notionally invested in a measurement fund tracking the Company's common stock during…

Original filing · 0001004434-26-000023
Related transactions

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Same reporting owner
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