Summary Prospectus by Investment Company (Form 497K)

THE ADVISORS' INNER CIRCLE FUND

CIBC Atlas All Cap Growth Fund

(the "Fund")

Supplement dated May 28, 2026

to the Fund's Summary Prospectus and Prospectus (the "Prospectus"), each dated March 1, 2026

This Supplement provides new and additional information beyond that contained in the Summary Prospectus and Prospectus and should be read in conjunction with the Summary Prospectus and Prospectus.

Effective June 1, 2026 (the "Effective Date"), Robert C. Bridges, John P. Huber and Kyle M. Nitiss will no longer serve as portfolio managers for the Fund, and Sandy Sanders will be appointed to serve as the sole portfolio manager of the Fund. The changes in the Fund's portfolio management team are part of a planned manager transition and are not expected to result in any changes to the investment strategy or investment process for the Fund.

Accordingly, as of the Effective Date, the Summary Prospectus and Prospectus are hereby amended and supplemented as follows:

Sandy Sanders, CFA, Managing Director and Portfolio Manager, has managed the Fund since 2026.

Sandy Sanders, CFA, Managing Director, is the manager of the CIBC Atlas All Cap Growth Fund. Prior to joining the Adviser, Mr. Sanders worked at Manulife Investment Management since 2010. Before that, he was a co-portfolio manager at Wells Capital Management and Evergreen Investments. Mr. Sanders has been in the financial services industry for more than 29 years.

Please retain this supplement for future reference.

ATF-SK-017-0100