[Form 4] STERIS plc Insider Trading Activity

Rhea-AI Filing Summary

John Adam Zangerle, Senior Vice President, General Counsel and Secretary of STERIS plc (STE), reported that 202 restricted ordinary shares awarded on October 1, 2021 vested on October 1, 2025. Of those vested shares, 91 were withheld to satisfy tax withholding obligations, recorded as a disposition. After the transaction, Mr. Zangerle beneficially owns 33,669 ordinary shares. The filing notes 8,511 ordinary shares remain restricted with staggered lapse dates between June 1, 2026 and June 5, 2028. The Form 4 was signed by an authorized representative on October 3, 2025.

Positive

• 202 restricted shares vested on 10/01/2025, reflecting scheduled compensation
• Reporting person retains a substantial holding of 33,669 ordinary shares

Negative

• 91 shares were withheld to satisfy tax obligations (recorded as a disposition)
• 8,511 ordinary shares remain restricted with lapses through 06/05/2028

Insights

Legal/Compliance Officer

TL;DR: This is a routine vesting and tax-withholding disclosure, not an open-market sale.

This Form 4 shows a vesting event of 202 restricted shares on 10/01/2025 and the withholding of 91 shares to satisfy taxes, reported under transaction code F. The entry records a disposition only for withheld shares at $0 per share as a tax settlement, which is standard practice.

Because the filing documents compensatory share vesting and tax withholding, it does not indicate an open-market sale or purchase by the reporting person.

Corporate Governance Analyst

TL;DR: Insider still holds a material position with staggered restricted-share expirations.

Post-transaction beneficial ownership is reported as 33,669 shares. The filing discloses 8,511 restricted shares remaining, with specific lapse dates from June 1, 2026 through June 5, 2028, indicating continued alignment with company compensation schedules.

The structured vesting schedule and remaining restrictions are relevant to assessing future insider selling potential tied to restriction lapse 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
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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^*

Zangerle John Adam

(Last) (First) (Middle)

70 SIR JOHN ROGERSON'S QUAY

(Street)

DUBLIN 2 L2 D02 R296

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
STERIS plc [ STE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Sr. VP, Gen Counsel, and Sec.

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

4. If Amendment, Date of 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

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
Ordinary Shares	10/01/2025		F		91(1)	D	$0	33,669(2)	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. 91 shares were withheld from the 202 restricted shares that vested on October 1, 2025 These 91 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These 202 ordinary shares were awarded to Mr. Zangerle on October 1, 2021. These vested shares were valued at the NYSE closing market price on October 1, 2025.

2. As of October 1, 2025, 8,511 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 1,157 on June 1, 2026; 846 on June 2, 2026; 1,252 on June 3, 2026; 1,376 on June 4, 2026; 1,252 on June 3 2027; 1,376 on June 4, 2027 and 1,252 on June 5, 2028.

Remarks:

	/s/ John P. Ubbing, Authorized Representative under Power of Attorney	10/03/2025
	** 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.

FAQ

What happened in the STERIS (STE) Form 4 filed for John Adam Zangerle?

The filing reports that 202 restricted shares vested on 10/01/2025 and 91 of those shares were withheld for taxes; beneficial ownership after the transaction is 33,669 shares.

How many shares were withheld for taxes in the transaction?

91 shares were withheld to satisfy tax withholding obligations associated with the vesting.

How many restricted shares remain outstanding for Mr. Zangerle and when do they lapse?

As of 10/01/2025, 8,511 ordinary shares remain restricted; lapse dates are 06/01/2026, 06/02/2026, 06/03/2026, 06/04/2026, 06/03/2027, 06/04/2027, and 06/05/2028.

What was the original grant date for the vested shares?

The 202 vested ordinary shares were originally awarded on October 1, 2021.

Who signed the Form 4 and when was it signed?

The Form 4 was signed by John P. Ubbing, an authorized representative, on 10/03/2025.