[Form 4] STERIS plc Insider Trading Activity

Rhea-AI Filing Summary

STERIS plc (STE) officer and V.P. & Corporate Treasurer reported option exercises and share sales. On November 18, 2025, the insider exercised an employee stock option for 3,536 ordinary shares at an exercise price of $182.22 per share, then sold shares in several transactions at market prices around the mid-$250s. Reported sales included 3,324 shares at a weighted average price of $257.43, 212 shares at a weighted average price of $258.03, and 1,500 shares at $257.76 per share.

After these transactions, the reporting person beneficially owned 5,695 ordinary shares, including 1,475 restricted shares as of November 18, 2025. The restricted shares are scheduled to vest in installments between June 1, 2026 and June 5, 2028, and the reported stock option is now fully vested with no remaining balance.

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

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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^*

Tamaro Renato

(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)
	V.P. & Corporate Treasurer

3. Date of Earliest Transaction (Month/Day/Year)
11/18/2025

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	11/18/2025		M		3,536	A	$182.22	10,731(1)	D
Ordinary Shares	11/18/2025		S		3,324	D	$257.43(2)	7,407(1)	D
Ordinary Shares	11/18/2025		S		212	D	$258.03(3)	7,195(1)	D
Ordinary Shares	11/18/2025		S		1,500	D	$257.76	5,695(1)	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
Employee Stock Option (right to buy)	$182.22	11/18/2025		M			3,536	(4)	06/01/2030	Ordinary Shares	3,536	$0	0	D

Explanation of Responses:

1. As of November 18, 2025, 1,475 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 241 on June 1, 2026; 141 on June 2, 2026; 217 on June 3, 2026; 221 on June 4, 2026; 217 on June 3, 2027; 221 on June 4, 2027 and 217 on June 5, 2028.

2. Price reflects a weighted average sale price for multiple transactions ranging from $257.01 to $257.87 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

3. Price reflects a weighted average sale price for multiple transactions ranging from $258.02 to $258.03 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

4. This option is fully vested.

Remarks:

	/s/ John P. Ubbing, Authorized Representative under Power of Attorney	11/20/2025
	** 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 insider transaction did STERIS (STE) report in this Form 4?

The STERIS (STE) Form 4 reports that the V.P. & Corporate Treasurer exercised an employee stock option for 3,536 ordinary shares at an exercise price of $182.22 per share and sold shares on November 18, 2025.

How many STERIS (STE) shares did the insider sell on November 18, 2025?

On November 18, 2025, the insider reported sales of 3,324 shares at a weighted average price of $257.43 per share, 212 shares at a weighted average price of $258.03 per share, and 1,500 shares at $257.76 per share.

How many STERIS (STE) shares does the reporting person own after the transactions?

Following the reported transactions, the reporting person beneficially owned 5,695 ordinary shares of STERIS plc as of November 18, 2025.

How many restricted STERIS (STE) shares does the insider hold and when do they vest?

As of November 18, 2025, the insider held 1,475 restricted ordinary shares. These are scheduled to vest in tranches of 241 on June 1, 2026, 141 on June 2, 2026, 217 on June 3, 2026, 221 on June 4, 2026, 217 on June 3, 2027, 221 on June 4, 2027, and 217 on June 5, 2028.

What is the status of the employee stock option reported by the STERIS (STE) insider?

The employee stock option with an exercise price of $182.22 covering 3,536 ordinary shares was exercised on November 18, 2025, and the option is reported as fully vested with 0 derivative securities remaining afterward.

What is the role of the reporting person in STERIS (STE)?

The reporting person is an officer of STERIS plc, serving as V.P. & Corporate Treasurer, and filed the Form 4 as a single reporting person.