Dominion Energy Inc.

09/17/2026 | Press release | Distributed by Public on 09/17/2026 06:38

Supplemental Prospectus (Form 424B3)

Registration No. 333-295605

Filed Pursuant to Rule 424(b)(3)

DOMINION ENERGY, INC.

DOMINION ENERGY RELIABILITY INVESTMENT®

VARIABLE DENOMINATION FLOATING RATE DEMAND NOTES

PRICING SUPPLEMENT

(To Prospectus dated May 6, 2026)

The Date of this Pricing Supplement is September 17, 2026

The Dominion Energy Reliability Investment Variable Denomination Floating Rate Demand Notes (the "Notes") bear interest at a floating rate per annum determined by the Dominion Energy Reliability Investment Committee on a weekly basis to be effective on Monday of the week following such determination.

The current Prospectus for the Notes was filed with the Securities and Exchange Commission on May 6, 2026. The interest rate established for the Notes as of September 21, 2026, and set forth below, remains in effect until further notice.

Interest Rate Per Annum

4.00%

Dominion Energy Inc. published this content on September 17, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on September 17, 2026 at 12:38 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]