DuPont De Nemours (DD) Proxy filing summary

Board of directors and corporate governance

• Luther C. Kissam IV resigned from the board effective April 14, 2026, and withdrew from re-election consideration.

• The board size will decrease from eleven to ten directors, with no successor nominated for the vacancy.

• All other nominees remain up for re-election at the annual meeting, and the board recommends voting for them.

Voting matters and shareholder proposals

• Votes cast for Mr. Kissam will be disregarded; proxy cards remain valid for all other nominees.

• No other agenda items or proposals are modified by this supplement.

• Shareholders are encouraged to vote promptly using the existing proxy card or update their vote if desired.