Additional Proxy Soliciting Materials (Form DEFA14A)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

ENERSYS

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

P.O. BOX 8016, CARY, NC 27512-9903 Your vote matters! Meeting Materials: Notice of Meeting and Proxy Statement & Annual Report or Form 10-K Important Notice Regarding the Availability of Proxy Materials for the Stockholders EnerSys Meeting To Be Held On August 6, 2026 For Stockholders as of record on June 10, 2026 Annual Meeting of Stockholders To order paper materials, use one of the Thursday, August 6, 2026 10:00 AM, Eastern Time Annual Meeting to be held live via the Internet-please visit www.proxydocs.com/ENS for more following methods. details. You must register to attend the meeting online and/or participate at www.proxydocs.com/ENS Internet: For a convenient way to view proxy materials, VOTE, and obtain www.investorelections.com/ENS directions to attend the meeting go to www.proxydocs.com/ENS To vote your proxy while visiting this site, you will need the 12 digit control number in the box below. Call: 1-866-648-8133 This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. Email: [email protected] Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the * If requesting material by e-mail, please send a blank e-mail with the internet. 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your If you want to receive a paper or e-mail copy of the proxy material, you must request one. e-mail requesting material. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before July 27, 2026. Your control number Have the 12 digit control number located in the box above available when you access the website and follow the instructions. SEE REVERSE FOR FULL AGENDA Copyright © 2026 BetaNXT, Inc. or its affiliates. All Rights Reserved

EnerSys Annual Meeting of Stockholders THE BOARD OF DIRECTORS RECOMMENDS A VOTE:    FOR ALL OF THE NOMINEES IN PROPOSAL 1 AND FOR PROPOSALS 2 AND 3 PROPOSAL 1. Elect four (4) Class I director nominees 1.01 Caroline Chan 1.02 Steven M. Fludder 1.03 Paul J. Tufano 1.04 Rudolph Wynter 2. Ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for fiscal year ending March 31, 2027. 3. An advisory vote to approve the compensation of EnerSys' named executive officers.