Artisan Partners Asset Management Inc. 8-K

What Happened
Artisan Partners Asset Management Inc. (APAM) filed a Form 8-K on May 11, 2026 (Item 8.01) to report that it issued a press release containing information about the company's preliminary assets under management (AUM) as of April 30, 2026. The press release is attached to the filing as Exhibit 99.1 and is incorporated by reference.

Key Details

• Filing date: May 11, 2026 (Form 8-K, Item 8.01 — Other Events).
• Subject: Preliminary AUM reported as of April 30, 2026 (details provided in attached press release, Exhibit 99.1).
• Exhibit: Press release is included as Exhibit 99.1 to the 8-K.
• Signature: Report signed by Charles J. Daley, Jr., Executive VP, Chief Financial Officer and Treasurer.

Why It Matters
AUM is a primary driver of revenue and fee income for asset managers, so updates on AUM are material to investors monitoring APAM's business performance and growth trends. This filing notifies investors that preliminary AUM figures were released; investors should review the attached press release (Exhibit 99.1) and await any subsequent detailed monthly or quarterly reports for full financial context.