EnerSys CEO withholds shares for RSU vesting

EnerSys President and CEO Shawn M. O'Connell reported two Form 4 transactions involving common stock.

Rhea-AI Filing Summary

EnerSys President and CEO Shawn M. O'Connell reported two Form 4 transactions involving common stock. On August 11, 2026, 590 shares at $186.30 per share, and on August 12, 2026, 795 shares at $186.21 per share were delivered or withheld for payment of exercise price or tax liability and were forfeited in connection with the vesting of Restricted Stock Units granted in 2023 and 2022.

Insider Trade Summary

Exercise Price or Tax Liability: 1,385 shares

Exercise Price or Tax Liability 2 txns

Insider O'Connell Shawn M.

Role President and CEO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock F2	795	$186.21	$148K
Exercise Price or Tax Liability	Common Stock F1	590	$186.30	$110K

Holdings After Transaction: Common Stock — 66,798 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

Shares delivered/withheld Aug 11, 2026: 590 shares Shares delivered/withheld Aug 12, 2026: 795 shares Total RSU-related forfeited shares: 1,385 shares +1 more

4 metrics

Shares delivered/withheld Aug 11, 2026 590 shares Common stock delivered or withheld at $186.3000 per share for exercise price or tax liability

Shares delivered/withheld Aug 12, 2026 795 shares Common stock delivered or withheld at $186.2100 per share for exercise price or tax liability

Total RSU-related forfeited shares 1,385 shares Aggregate shares delivered or withheld across two code F transactions for RSU vesting

Exercise-price-or-tax-liability transactions 2 transactions Both non-derivative code F dispositions reported for RSU vesting-related obligations

Key Terms

Restricted Stock Units, Payment of exercise price or tax liability, Form 4

3 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.

Payment of exercise price or tax liability financial

"transaction code F indicates payment of exercise price or tax liability"

Form 4 regulatory

"EnerSys President and CEO Shawn M. O'Connell reported two Form 4 transactions"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did EnerSys (ENS) report for CEO Shawn M. O'Connell?

EnerSys reported that CEO Shawn M. O'Connell had 1,385 common shares delivered or withheld to cover exercise price or tax liability. These shares were forfeited in connection with vesting of previously granted Restricted Stock Units from 2022 and 2023.

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

On August 11, 2026, O'Connell had 590 shares of EnerSys common stock, priced at $186.30 per share, delivered or withheld. Footnotes state these shares were forfeited in connection with RSUs vesting granted on August 11, 2023.

What happened in the August 12, 2026 EnerSys (ENS) Form 4 transaction?

On August 12, 2026, O'Connell had 795 shares of EnerSys common stock, at $186.21 per share, delivered or withheld. The shares were forfeited as part of RSUs vesting granted on August 12, 2022, consistent with tax or exercise-price settlement.

Were the EnerSys (ENS) Form 4 transactions open-market sales by the CEO?

The transactions were reported under code F, meaning shares were delivered or withheld for payment of exercise price or tax liability. Footnotes clarify they were forfeited in connection with RSU vesting, rather than discretionary open-market sales.

Does the EnerSys (ENS) Form 4 indicate a 10b5-1 trading plan for these transactions?

The document-level Rule 10b5-1 checkbox is not affirmed for these transactions. The filing does not state that the dispositions occurred under a pre-arranged 10b5-1 trading plan, and the footnotes focus instead on RSU vesting-related forfeitures.

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

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Accepted by SEC EDGAR 08/13/2026 - 04:16 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^*

O'Connell Shawn M.

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

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		590(1)	D	$186.3	67,593	D
Common Stock	08/12/2026		F		795(2)	D	$186.21	66,798	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)