Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * O'Connell Shawn M. 2. Issuer Name and Ticker or Trading Symbol EnerSys [ENS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 2366 BERNVILLE ROAD 3. Date of Earliest Transaction (Month/Day/Year) 12/26/2025 (Street) READING, PA 19605 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/26/2025 A 3.2416(1) A $ 0 71,976.2416 D Common Stock 12/26/2025 A 4.8086(2) A $ 0 71,981.0502 D Common Stock 12/26/2025 A 10.0503(3) A $ 0 71,991.1005 D Common Stock 12/26/2025 A 6.9303(4) A $ 0 71,998.0308 D Common Stock 12/26/2025 A 42.0574(5) A $ 0 72,040.0882 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
O'Connell Shawn M. 2366 BERNVILLE ROAD READING, PA 19605			President and CEO

Signatures

/s/ John Yarbrough by Power of Attorney		12/30/2025
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	These shares were granted in the form of Restricted Stock Units ("RSUs"), in connection with the cash dividend paid on December 26, 2025, to stockholders of record as of December 12, 2025 (the "Dividend"), with respect to 1,819 unvested RSUs granted to the reporting person on August 12, 2022, and adjusted for previously declared and paid cash dividends. These RSUs will vest and are payable concurrent with the underlying RSUs.
(2)	These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 2,698 unvested RSUs granted to the reporting person on August 11, 2023, and adjusted for previously declared and paid cash dividends. These RSUs will be payable concurrent with the underlying RSUs.
(3)	These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 5,638 unvested RSUs granted to the reporting person on August 9, 2024, and adjusted for a previously declared and paid cash dividend. These RSUs will be payable concurrent with the underlying RSUs.
(4)	These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 3,888 unvested RSUs granted to the reporting person on November 8, 2024, and adjusted for a previously declared and paid cash dividend. These RSUs will be payable concurrent with the underlying RSUs.
(5)	These shares were granted in the form of RSUs, in connection with the Dividend, with respect to 23,594 unvested RSUs granted to the reporting person on August 8, 2025, and adjusted for a previously declared and paid cash dividend. These RSUs will be payable concurrent with the underlying RSUs.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.