EnerSys CTO reports 942-share award tax disposition

EnerSys officer Mark E. Matthews, CTO and President of Precision Power, reported two Form 4 transactions involving company common stock.

Rhea-AI Filing Summary

EnerSys officer Mark E. Matthews, CTO and President of Precision Power, reported two Form 4 transactions involving company common stock. On August 11 and 12, 2026, a total of 942 shares of common stock were disposed of with code F, representing shares delivered or withheld for payment of exercise price or tax liability in connection with the vesting of previously granted Restricted Stock Units.

Insider Trade Summary

Exercise Price or Tax Liability: 942 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	531	$186.21	$99K
Exercise Price or Tax Liability	Common Stock F1	411	$186.30	$77K

Holdings After Transaction: Common Stock — 19,019 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 11, 2023.
2. F2. Shares were forfeited in connection with the vesting of Restricted Stock Units granted to the reporting person on August 12, 2022.

Key Figures

Code F shares disposed (total): 942 shares August 11, 2026 shares disposed: 411 shares August 12, 2026 shares disposed: 531 shares +2 more

5 metrics

Code F shares disposed (total) 942 shares Shares delivered or withheld for payment of exercise price or tax liability in August 2026

August 11, 2026 shares disposed 411 shares Code F disposition at $186.30 per share in connection with RSU vesting

August 12, 2026 shares disposed 531 shares Code F disposition at $186.21 per share in connection with RSU vesting

Price per share 8/11/2026 $186.30 Per-share value used for the 411-share code F disposition

Price per share 8/12/2026 $186.21 Per-share value used for the 531-share code F disposition

Key Terms

Restricted Stock Units, code F, payment of exercise price or tax liability

3 terms

Restricted Stock Units financial

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

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.

code F financial

"reported two Form 4 transactions involving company common stock in code F"

payment of exercise price or tax liability financial

"shares delivered or withheld for payment of exercise price or tax liability"

FAQ

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

What insider transactions did EnerSys (ENS) report for Mark E. Matthews?

EnerSys reported that Mark E. Matthews disposed of 942 common shares in two code F transactions on August 11 and 12, 2026, related to the vesting of Restricted Stock Units previously granted to him.

How many EnerSys (ENS) shares were involved in the August 11, 2026 transaction?

On August 11, 2026, 411 common shares of EnerSys were disposed of at a price of $186.30 per share, with the shares delivered or withheld for payment of exercise price or tax liability tied to RSU vesting.

What was reported for EnerSys (ENS) on August 12, 2026 for Mark E. Matthews?

On August 12, 2026, 531 common shares of EnerSys were disposed of at $186.21 per share, in a code F transaction where shares were delivered or withheld for payment of exercise price or tax liability in connection with vested Restricted Stock Units.

Are the EnerSys (ENS) Form 4 transactions by Mark E. Matthews market sales?

No. Both transactions use code F, indicating shares were delivered or withheld for payment of exercise price or tax liability related to equity awards, rather than open-market purchases or sales of EnerSys stock.

What do the footnotes say about EnerSys (ENS) shares forfeited by Mark E. Matthews?

The footnotes state the shares were forfeited in connection with the vesting of Restricted Stock Units granted on August 11, 2023 and August 12, 2022, clarifying the link between the dispositions and prior RSU grants.

Was a Rule 10b5-1 trading plan used for the EnerSys (ENS) Form 4 transactions?

The filing’s Rule 10b5-1 checkbox is not marked as being under a trading plan, and there is no footnote indicating that these EnerSys transactions were executed pursuant to a pre-arranged 10b5-1 plan.

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

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Accepted by SEC EDGAR 08/13/2026 - 04:20 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)
08/11/2026

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	08/11/2026		F		411(1)	D	$186.3	19,550	D
Common Stock	08/12/2026		F		531(2)	D	$186.21	19,019	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 11, 2023.

2. Shares were forfeited in connection with the vesting of Restricted Stock Units granted to the reporting person on August 12, 2022.

	/s/ John Yarbrough by Power of Attorney	08/13/2026
	** 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)