CONSOLIDATED EDISON INC

Securities Trading Plans of Directors and Executive Officers

During the three months ended December 31, 2024, no director or officer (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934, as amended)adopted, terminated or modified any Rule 10b5-1 or non-Rule 10b5-1 trading arrangement (as defined in Item 408(a) of Regulation S-K).

Con Edison is disclosing the information below in this Item 9B in lieu of filing a Current Report on Form 8-K.

Amendments to Con Edison’s By-laws

On February 20, 2025, the Board of Directors (the Board) of Con Edison approved and adopted amendments to Con Edison’s By-laws (as so amended, the By-laws), effective as of February 20, 2025. The amendments set forth in the By-laws include, among other things, the following:

•allowing the Board to appoint one or more inspectors of election of shareholders’ vote, instead of the prior requirement of at least two but no more than five inspectors, and providing that if the appointed inspector(s) fail to appear or act, the Board may fill the vacancy in advance of the meeting or at the meeting by the Chairman of the meeting (Section 6);

•requiring shareholders to provide reasonable evidence of compliance with Rule 14a-19 under the Exchange Act no later than five business days prior to the applicable meeting of shareholders (Section 7);

•reducing the required minimum number of directors on a Board committee from three members to two members (Section 10);

•providing for the Board’s delegation to the Chief Executive Officer of Con Edison to appoint and remove officer positions between annual appointments (excluding Executive Officers and the Controller, Treasurer, Secretary and General Auditor) (Section 12); and

•incorporating other technical, ministerial, clarifying and conforming changes.

The foregoing description of the amendments to the By-laws is qualified in its entirety by reference to the full text of the By-laws, a copy of which is included as Exhibit 3.1.2 to this report and is incorporated herein by reference.