American Century ETF Trust Summary Prospectus Supplement American Century® Focused Dynamic Growth ETF American Century® Large Cap Equity ETF American Century® Large Cap Growth ETF American Century® Mid Cap Growth Impact ETF
Supplement dated May 24, 2025 n Summary Prospectuses dated January 1, 2025

Effective June 11, 2025, Rene Casis, Vice President, Portfolio Manager and Head of ETF Solutions, will no longer serve as portfolio manager for the funds. All information for Mr. Casis in the summary prospectus of each fund is to be deleted as of that date.

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