Nuveen S&P 500 Dynamic Overwrite Fund (SPXX) Form 424B3 — Oct 2, 2026

Nuveen S&P 500 Dynamic Overwrite Fund (NYSE: SPXX) filed a prospectus supplement dated October 2, 2026, amending the Use of Proceeds section of its March 25, 2025 prospectus supplement. The revised language states the Fund anticipates investing substantially all net proceeds from common share issuances in line with its investment objective within approximately three months of receipt, with pending proceeds held in U.S. Government securities or high-quality short-term money market instruments. Notably, the amendment also permits the Fund to use proceeds to pay distributions to shareholders.

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