AMG Director Cates Staley Receives 274-Unit Stock Award

What Happened Cates G. Staley, a director of Affiliated Managers Group, Inc. (AMG), received a grant of 274 stock units (reported as a derivative award) on July 30, 2026. The Form 4 shows an acquisition type "A" for award, 274 units at a reported acquisition price of $0.00 (total reported value $0). Per the filing footnote, each stock unit represents the right to receive one share of AMG common stock upon vesting; the units vest in full on August 15, 2027. This is a compensation award rather than an open-market purchase or sale.

Key Details

• Transaction date: 2026-07-30; Form 4 filed: 2026-08-03 (filed within the standard two-business-day Form 4 deadline).
• Instrument: 274 stock units (derivative securities), acquisition price reported as $0.00; total reported acquisition value $0.
• Vesting: Units vest in full on August 15, 2027 (Footnote F1).
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Footnote F1: Each unit equals one common share upon vesting.
• Filing timeliness: Timely (no late filing indicated).

Context Stock unit awards are commonly used for director compensation and are not the same as an immediate cash purchase of shares. Because these are deferred units that convert to shares only after vesting, they do not represent an immediate insider buy signal. Retail investors typically watch open-market purchases for stronger directional signals; awards reflect compensation and potential future dilution when converted to shares.