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Erika Ostrowski (SHC) details stock and RSU holdings in Form 3

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Sotera Health Co filed an initial insider ownership report for Erika Ostrowski, its SVP, General Counsel and Secretary. The filing shows she directly holds 57,538 shares of Common Stock, consisting of 32,180 Restricted Stock Units and 25,358 shares of Common Stock.

She also holds stock options over 20,419 and 11,740 underlying Common shares, each with a $14.59 exercise price, granted under the 2020 Omnibus Incentive Plan. In addition, she holds performance-based RSUs tied to 4,484 and 9,892 underlying shares, with exercise prices of $13.38 and $17.69, subject to vesting and performance conditions. The filing records her current holdings and does not show any new purchases or sales.

Positive

  • None.

Negative

  • None.
Insider Ostrowski Erika
Role SVP, General Counsel and Sec.
Type Security Shares Price Value
holding Stock Options -- -- --
holding Stock Options -- -- --
holding Performance RSUs -- -- --
holding Performance RSUs -- -- --
holding Common Stock, $0.01 par value per share ("Common Stock") -- -- --
Holdings After Transaction: Stock Options — 20,419 shares (Direct); Performance RSUs — 4,484 shares (Direct); Common Stock, $0.01 par value per share ("Common Stock") — 57,538 shares (Direct)
Footnotes (1)
  1. These securities consist of 32,180 Restricted Stock Units ("RSUs") and 25,358 shares of Common Stock. These options were granted on March 4, 2024, pursuant to the terms of a stock option agreement under the Sotera Health Company 2020 Omnibus Incentive Plan ("2020 Incentive Plan"). The options vest annually in three equal installments commencing on March 2, 2025, subject to the Reporting Person's continued service through each such date and expire 10 years after the grant date. These options were granted on March 4, 2024, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan, and have vested in full. These options expire 10 years after the grant date. These securities consist of the maximum number of additional performance-based RSUs that were granted on March 3, 2025, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each additional RSU represents the Reporting Person's right to receive one share of Common Stock, subject to stock-price related conditions. The additional RSUs vest in equal annual installments in March 2027 and March 2028, subject to performance. These securities consist of the maximum number of additional performance-based RSUs that were granted on March 2, 2026, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each additional RSU represents the Reporting Person's right to receive one share of Common Stock, subject to stock-price related conditions. The additional RSUs generally vest annually in 60%, 20% and 20% installments, respectively, commencing March 2027, subject to performance.
Direct Common Stock and RSUs 57,538 shares Direct Common Stock and RSU holdings reported on Form 3
Restricted Stock Units 32,180 RSUs Part of direct Common Stock position described in footnote
Common shares (non-RSU portion) 25,358 shares Direct Common Stock portion separate from RSUs
Stock options grant 1 20,419 underlying shares at $14.59 Options vesting annually in three equal installments from March 2, 2025
Stock options grant 2 11,740 underlying shares at $14.59 Options granted March 4, 2024, vested in full
Performance RSUs grant 1 4,484 underlying shares at $13.38 Performance-based RSUs vesting in March 2027 and March 2028, subject to performance
Performance RSUs grant 2 9,892 underlying shares at $17.69 Performance-based RSUs vesting 60%, 20%, 20% annually from March 2027, subject to performance
Restricted Stock Units ("RSUs") financial
"These securities consist of 32,180 Restricted Stock Units ("RSUs") and 25,358 shares of Common Stock."
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
Performance-based RSUs financial
"These securities consist of the maximum number of additional performance-based RSUs that were granted on March 3, 2025..."
Performance-based restricted stock units (RSUs) are promises to deliver company shares to employees only if the business meets specific goals, such as revenue, profit, stock-price targets, or strategic milestones. For investors, they matter because they change future share supply and align management incentives with company results—like a salesperson whose bonus only pays out when sales targets are hit—so they can affect earnings, dilution, and confidence in leadership.
2020 Omnibus Incentive Plan financial
"These options were granted on March 4, 2024, pursuant to the terms of a stock option agreement under the Sotera Health Company 2020 Omnibus Incentive Plan..."
exercise price financial
"exercisePrice: "14.5900" ... exercisePrice: "13.3800" ... exercisePrice: "17.6900""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"The options vest annually in three equal installments commencing on March 2, 2025, subject to the Reporting Person's continued service..."
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Ostrowski Erika

(Last)(First)(Middle)
C/O SOTERA HEALTH COMPANY
9100 SOUTH HILLS BLVD, SUITE 300

(Street)
BROADVIEW HEIGHTS OHIO 44147

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2026
3. Issuer Name and Ticker or Trading Symbol
Sotera Health Co [ SHC ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP, General Counsel and Sec.
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, $0.01 par value per share ("Common Stock")57,538(1)D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options (2) (2)Common Stock20,419$14.59D
Stock Options (3) (3)Common Stock11,740$14.59D
Performance RSUs (4) (4)Common Stock4,484$13.38D
Performance RSUs (5) (5)Common Stock9,892$17.69D
Explanation of Responses:
1. These securities consist of 32,180 Restricted Stock Units ("RSUs") and 25,358 shares of Common Stock.
2. These options were granted on March 4, 2024, pursuant to the terms of a stock option agreement under the Sotera Health Company 2020 Omnibus Incentive Plan ("2020 Incentive Plan"). The options vest annually in three equal installments commencing on March 2, 2025, subject to the Reporting Person's continued service through each such date and expire 10 years after the grant date.
3. These options were granted on March 4, 2024, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan, and have vested in full. These options expire 10 years after the grant date.
4. These securities consist of the maximum number of additional performance-based RSUs that were granted on March 3, 2025, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each additional RSU represents the Reporting Person's right to receive one share of Common Stock, subject to stock-price related conditions. The additional RSUs vest in equal annual installments in March 2027 and March 2028, subject to performance.
5. These securities consist of the maximum number of additional performance-based RSUs that were granted on March 2, 2026, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each additional RSU represents the Reporting Person's right to receive one share of Common Stock, subject to stock-price related conditions. The additional RSUs generally vest annually in 60%, 20% and 20% installments, respectively, commencing March 2027, subject to performance.
Remarks:
Exhibit 24.1 - Power of Attorney
Gregory J. Dziak, Attorney-in-Fact04/08/2026
** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What does Erika Ostrowski’s Form 3 show for Sotera Health (SHC)?

The Form 3 shows Erika Ostrowski’s initial ownership in Sotera Health. She directly holds 57,538 Common shares, made up of 32,180 RSUs and 25,358 shares, plus various stock options and performance RSUs granted under the 2020 Omnibus Incentive Plan.

How many Sotera Health (SHC) common shares does Erika Ostrowski hold?

Erika Ostrowski holds 57,538 shares of Sotera Health Common Stock. According to the filing, this includes 32,180 Restricted Stock Units and 25,358 actual Common shares held directly, reflecting her combined equity and equity-based compensation position at the company.

What stock options does Erika Ostrowski report in Sotera Health’s Form 3?

She reports stock options over 20,419 and 11,740 underlying Common shares, each with a $14.59 exercise price. These options were granted under the 2020 Omnibus Incentive Plan, with one grant vesting in three annual installments and the other already fully vested.

What performance RSUs does Erika Ostrowski hold at Sotera Health (SHC)?

The filing lists performance-based RSUs tied to 4,484 and 9,892 underlying Common shares. These RSUs were granted under the 2020 Incentive Plan and vest in future years, subject to stock-price-related performance conditions and continued service requirements described in the footnotes.

Does Erika Ostrowski’s Form 3 for Sotera Health show any stock purchases or sales?

The Form 3 does not show any stock purchases or sales. It records her existing holdings in Common Stock, stock options, and performance RSUs as of the reporting date, serving as an initial ownership baseline rather than a record of new trading activity.

What is Sotera Health’s 2020 Omnibus Incentive Plan mentioned in the Form 3?

The 2020 Omnibus Incentive Plan is Sotera Health’s equity compensation program referenced in the filing. Under this plan, Erika Ostrowski received stock options and performance-based RSUs, with grants subject to vesting schedules, expiration dates, and stock-price performance conditions noted in the footnotes.