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Sotera Health (SHC) CEO awarded large RSU and performance SAU grants

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

SHADER ALTON reported acquisition or exercise transactions in this Form 4 filing.

Sotera Health Co reported that Chief Executive Officer Alton Shader received equity awards on May 26, 2026. He was granted 203,634 shares of Common Stock as RSUs and another 375,939 RSUs, all at no cash cost, plus 101,817 performance-based share appreciation units tied to Sotera’s stock price. The RSUs and SAUs generally vest in three equal annual installments starting March 2, 2027. After these grants, he directly holds 579,573 Common shares and 101,817 SAUs.

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Insider SHADER ALTON
Role Chief Executive Officer
Type Security Shares Price Value
Grant/Award Share Appreciation Units 101,817 $0.00 --
Grant/Award Common Stock, $0.01 par value per share ("Common Stock") 375,939 $0.00 --
Grant/Award Common Stock 203,634 $0.00 --
Holdings After Transaction: Share Appreciation Units — 101,817 shares (Direct, null); Common Stock, $0.01 par value per share ("Common Stock") — 375,939 shares (Direct, null); Common Stock — 579,573 shares (Direct, null)
Footnotes (1)
  1. These securities consist of RSUs that were granted on May 26, 2026, pursuant to the terms of an RSU agreement under the Sotera Health Company 2020 Incentive Plan ("2020 Incentive Plan"). Each RSU represents the Reporting Person's right to receive one share of Common Stock, subject to vesting conditions. The RSUs generally vest annually over three years in equal increments, commencing March 2, 2027. These securities consist of RSUs that were granted on May 26, 2026, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each RSU represents the Reporting Person's right to receive one share of Common Stock, subject to vesting conditions. The RSUs generally vest annually over three years in equal increments, commencing March 2, 2027. These securities consist of a maximum number of performance-based share appreciation units ("SAUs") that were granted on May 26, 2026, pursuant to the terms of a SAU Agreement under the 2020 Incentive Plan. Each SAU represents the Reporting Person's right to receive one share of Common Stock subject to stock-price-related performance conditions. The SAUs generally vest annually over three years in equal installments, commencing March 2, 2027, subject to performance.
RSU grant 1 203,634 shares RSUs granted May 26, 2026 under 2020 Incentive Plan
RSU grant 2 375,939 shares Additional RSUs granted May 26, 2026
Performance SAUs granted 101,817 units Performance-based share appreciation units granted May 26, 2026
Post-grant share holdings 579,573 shares Common stock directly held after RSU grants
RSU vesting start March 2, 2027 RSUs vest annually over three years from this date
SAU vesting start March 2, 2027 SAUs vest annually over three years, subject to performance
Grant price per unit $0.00 RSUs and SAUs granted at no cash cost to CEO
RSUs financial
"These securities consist of RSUs that were granted on May 26, 2026, pursuant to the terms of an RSU agreement"
RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.
Share Appreciation Units financial
"These securities consist of a maximum number of performance-based share appreciation units ("SAUs") that were granted on May 26, 2026"
2020 Incentive Plan financial
"pursuant to the terms of an RSU agreement under the Sotera Health Company 2020 Incentive Plan ("2020 Incentive Plan")"
performance-based share appreciation units financial
"a maximum number of performance-based share appreciation units ("SAUs") that were granted on May 26, 2026"
SEC Form 4
FORM 4UNITED 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*
SHADER ALTON

(Last)(First)(Middle)
9100 SOUTH HILLS
SUITE 300

(Street)
BROADVIEW HEIGHTS OHIO 44147

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Sotera Health Co [ SHC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock, $0.01 par value per share ("Common Stock")05/26/2026A375,939(1)A$0375,939D
Common Stock05/26/2026A203,634(2)A$0579,573D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Share Appreciation Units(3)05/26/2026A101,817(3) (3) (3)Common Stock101,817$0101,817D
Explanation of Responses:
1. These securities consist of RSUs that were granted on May 26, 2026, pursuant to the terms of an RSU agreement under the Sotera Health Company 2020 Incentive Plan ("2020 Incentive Plan"). Each RSU represents the Reporting Person's right to receive one share of Common Stock, subject to vesting conditions. The RSUs generally vest annually over three years in equal increments, commencing March 2, 2027.
2. These securities consist of RSUs that were granted on May 26, 2026, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each RSU represents the Reporting Person's right to receive one share of Common Stock, subject to vesting conditions. The RSUs generally vest annually over three years in equal increments, commencing March 2, 2027.
3. These securities consist of a maximum number of performance-based share appreciation units ("SAUs") that were granted on May 26, 2026, pursuant to the terms of a SAU Agreement under the 2020 Incentive Plan. Each SAU represents the Reporting Person's right to receive one share of Common Stock subject to stock-price-related performance conditions. The SAUs generally vest annually over three years in equal installments, commencing March 2, 2027, subject to performance.
Remarks:
The Power of Attorney for Mr. Shader is filed as an exhibit to the Form 3 filed on [May 27, 2026], which is incorporated by reference.
Gregory S. Harvey, Attorney-in-Fact05/27/2026
** Signature of Reporting PersonDate
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)

FAQ

What did Sotera Health (SHC) CEO Alton Shader report in this Form 4?

The filing shows CEO Alton Shader received equity awards, not open-market trades. He was granted time-based RSUs, additional RSUs, and performance-based share appreciation units as part of Sotera Health’s 2020 Incentive Plan, increasing his direct equity-based compensation exposure.

How many RSUs did Sotera Health (SHC) grant to its CEO on May 26, 2026?

Alton Shader received 203,634 RSUs plus an additional 375,939 RSUs on May 26, 2026. Each RSU equals one Sotera Health common share, subject to vesting conditions under the 2020 Incentive Plan, and generally vests in three equal annual installments starting March 2, 2027.

What are the performance-based share appreciation units granted to SHC’s CEO?

The CEO received 101,817 performance-based share appreciation units (SAUs). Each SAU can deliver one common share if stock-price-related performance conditions and three-year annual vesting requirements, starting March 2, 2027, are met under Sotera Health’s 2020 Incentive Plan and governing SAU agreement.

Did Alton Shader buy or sell Sotera Health (SHC) stock in the market?

The transactions reported are all coded “A” for awards, not market purchases or sales. They represent grants of RSUs and SAUs at a price of $0.00 per unit, reflecting compensation rather than discretionary open-market trading activity in Sotera Health common shares.

What is Alton Shader’s reported Sotera Health common stock holding after these grants?

Following the reported grants, Alton Shader directly owns 579,573 shares of Sotera Health common stock. He also holds 101,817 performance-based share appreciation units, which may convert into additional shares if specified stock-price performance and vesting conditions under the 2020 Incentive Plan are satisfied.

When do the new Sotera Health (SHC) RSUs and SAUs start vesting for the CEO?

Both the RSUs and the performance-based SAUs generally begin vesting on March 2, 2027. Vesting is scheduled annually over three years, in equal installments, and the SAUs also depend on meeting stock-price-related performance conditions as set out in the applicable award agreements.