[Form 4] STERIS plc Insider Trading Activity

Rhea-AI Filing Summary

STERIS plc (STE) insider action by Renato Tamaro: The reporting person exercised an employee stock option to acquire 3,204 ordinary shares at a $147.05 per-share exercise price on 08/20/2025, then sold 3,204 shares the same day at a weighted average price of $249.24 per share. The exercise increased beneficial ownership to 10,425 shares before the sale, and after the sale the reporting person beneficially owns 7,221 ordinary shares. The filing notes 1,561 of the shares are subject to vesting restrictions with a specified lapse schedule. The option was awarded May 31, 2019 and is fully vested.

Positive

• Exercise and sale fully disclosed with transaction codes and weighted average sale price provided
• Option was fully vested, indicating the exercise did not accelerate vesting
• Detailed restricted share schedule supplied for 1,561 restricted shares, improving transparency

Negative

• Reduction in insider ownership from 10,425 to 7,221 ordinary shares after the sale
• Significant portion restricted (1,561 shares) which may limit immediate future insider liquidity

Insights

Financial Analyst

TL;DR: Routine option exercise followed by a same-day sale, realizing a material pre-tax gain per share; not a change to company guidance or operations.

The filing documents a commonplace executive liquidity event: exercise of a 3,204-share option at 147.05 and immediate sale at a weighted average 249.24, capturing a spread of ~102.19 per share before taxes and transaction costs. Net holdings fall from 10,425 to 7,221 shares. This is a personal financial action, not a corporate disclosure affecting revenues, debt, or operations, so market impact should be limited absent other news.

Corporate Governance Expert

TL;DR: Disclosure is complete and timely, shows standard insider liquidity and confirms vested option provenance.

The Form 4 includes required details: transaction codes, prices, beneficial ownership counts, and an explanation that the option was awarded in 2019 and is fully vested. The filing also enumerates the schedule of restricted shares (1,561 shares with specific lapse dates), which is useful for assessing future insider selling windows. No red flags on compliance or disclosure form completeness are evident from the text provided.

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^*

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)
08/20/2025

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	08/20/2025		M		3,204	A	$147.05	10,425	D
Ordinary Shares	08/20/2025		S		3,204	D	$249.24(1)	7,221(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
Employee Stock Option (right to buy)	$147.05	08/20/2025		M			3,204	(3)	05/31/2029	Ordinary Shares	3,204	$0	0	D

Explanation of Responses:

1. Price reflects a weighted average sale price for multiple transactions ranging from $249.145 to $249.34 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.

2. As of August 21, 2025, 1,561 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 86 on October 1, 2025; 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.

3. This option to purchase 3,204 STERIS plc ordinary shares was awarded on May 31, 2019 and is fully vested.

Remarks:

	/s/ John P. Ubbing, Authorized Representative under Power of Attorney	08/22/2025
	** 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 did Renato Tamaro (STE) do on 08/20/2025?

The reporting person exercised an option to acquire 3,204 shares at $147.05 and sold 3,204 shares at a weighted average $249.24 the same day.

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

Following the transactions the reporting person beneficially owns 7,221 ordinary shares.

Were the options exercised fully vested for STE Form 4?

Yes. The filing states the option was awarded on May 31, 2019 and is fully vested.

What was the weighted average sale price per share on the reported sale?

The weighted average sale price reported is $249.24 per share, with component trades ranging from $249.145 to $249.34.

How many of the reporting person’s shares are restricted and when do restrictions lapse?

As of August 21, 2025, 1,561 shares are restricted with lapse amounts and dates specified in the filing (examples include 86 on Oct 1, 2025 and scheduled lapses through June 5, 2028).