EnerSys CTO reports RSU-related share forfeitures

EnerSys reported that officer Mark E. Matthews, CTO and President, Precision Power, had a total of 1,058 Common Shares delivered or withheld on August 8–9, 2026.

Rhea-AI Filing Summary

EnerSys reported that officer Mark E. Matthews, CTO and President, Precision Power, had a total of 1,058 Common Shares delivered or withheld on August 8–9, 2026. These code F transactions, at $191.72 per share, reflect shares forfeited in connection with the vesting of previously granted Restricted Stock Units.

Insider Trade Summary

Exercise Price or Tax Liability: 1,058 shares

Exercise Price or Tax Liability 2 txns

Insider Matthews Mark E.

Role CTO and Pres. Precision Power

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock F2	460	$191.72	$88K
Exercise Price or Tax Liability	Common Stock F1	598	$191.72	$115K

Holdings After Transaction: Common Stock — 19,961 shares (Direct)

Footnotes (2)

1. F1. Shares were forfeited in connection with the vesting of Restricted Stock Units granted to the reporting person on August 8, 2025.
2. F2. Shares were forfeited in connection with the vesting of Restricted Stock Units granted to the reporting person on August 9, 2024.

Key Figures

Shares delivered/withheld 2026-08-08: 598 shares Shares delivered/withheld 2026-08-09: 460 shares Price per share: $191.72 per share +1 more

4 metrics

Shares delivered/withheld 2026-08-08 598 shares Common Stock, code F disposition related to RSU grant dated August 8, 2025

Shares delivered/withheld 2026-08-09 460 shares Common Stock, code F disposition related to RSU grant dated August 9, 2024

Price per share $191.72 per share Applied to both reported Common Stock code F dispositions

Total shares in code F transactions 1,058 shares Aggregate of two exercise-price-or-tax-liability dispositions

Key Terms

Restricted Stock Units, vesting, forfeited, transaction code F

4 terms

Restricted Stock Units financial

"Shares were forfeited in connection with the vesting of Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

vesting financial

"Shares were forfeited in connection with the vesting of Restricted Stock Units"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

forfeited financial

"Shares were forfeited in connection with the vesting of Restricted Stock Units"

transaction code F financial

"These code F transactions reflect shares delivered or withheld"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did EnerSys (ENS) officer Mark E. Matthews report in this Form 4?

Mark E. Matthews reported two code F dispositions totaling 1,058 EnerSys common shares on August 8–9, 2026. The shares were forfeited in connection with the vesting of Restricted Stock Units previously granted to him.

How many EnerSys (ENS) shares were delivered or withheld on each date?

Matthews had 598 shares delivered or withheld on August 8, 2026 and 460 shares on August 9, 2026. Both transactions were reported as Common Stock dispositions under transaction code F.

What price per share is reported for the EnerSys (ENS) Form 4 transactions?

Each transaction reports a value of $191.72 per share for the EnerSys common stock involved. This figure applies to both the 598-share disposition on August 8, 2026 and the 460-share disposition on August 9, 2026.

Why were EnerSys (ENS) shares forfeited by Mark E. Matthews?

Footnotes state the shares were forfeited in connection with RSU vesting. Specifically, they relate to Restricted Stock Units granted on August 8, 2025 and August 9, 2024, which vested and triggered these code F dispositions.

Are the EnerSys (ENS) Form 4 transactions open-market sales or trades?

No. The Form 4 characterizes them as code F transactions, meaning shares were delivered or withheld for payment of exercise price or tax liability, tied here to RSU vesting forfeitures, not open-market sales.

Does the EnerSys (ENS) Form 4 show Matthews’ remaining share holdings?

The reported transactions list dispositions of 1,058 shares, but do not include a figure for total shares owned following the transactions. Only the mechanics of the forfeitures connected to RSU vesting are detailed.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/11/2026 - 04:39 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Matthews Mark E.

(Last) (First) (Middle)

2366 BERNVILLE ROAD

(Street)

READING PENNSYLVANIA 19605

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	CTO and Pres. Precision Power

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/08/2026		F		598(1)	D	$191.72	20,421	D
Common Stock	08/09/2026		F		460(2)	D	$191.72	19,961	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Shares were forfeited in connection with the vesting of Restricted Stock Units granted to the reporting person on August 8, 2025.

2. Shares were forfeited in connection with the vesting of Restricted Stock Units granted to the reporting person on August 9, 2024.

	/s/ John Yarbrough by Power of Attorney	08/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 Number.
* Form 4: SEC 1474 (03-26)