Sotera Health Co

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Specialized Disclosure Report

Submission of Matters to a Vote of Security Holders

Entry into a Material Definitive Agreement

Termination of a Material Definitive Agreement

No description available

No description available

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Additional Information for Proxy Statement/ Votes

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

No description available

No description available

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Results of Operations and Financial Condition

Other Events

No description available

No description available

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Other Events

No description available

No description available

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Regulation FD Disclosure

Specialized Disclosure Report

Submission of Matters to a Vote of Security Holders

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Regulation FD Disclosure

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

No description available

No description available

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

Required Information in Proxy Statement

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

No description available

Annual report pursuant to Section 13 or 15(d)

No description available

Automatic Shelf Registration

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Prospectus Supplement with Pricing Information

Notice of Effectiveness

Registration (IPO) statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement with Pricing Information

Registration of Securities on Exchange

Certification of approval for listing and registration on a national securities exchange

Free Writing Prospectus

Notice of Effectiveness

Amended Initial Registration Statement

Amended Initial Registration Statement

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Petras Michael B. Jr.

Petras Michael B. Jr.

Rutz Michael P

Lyons Jonathan M.

Rutz Michael P

Chen Ruoxi

SHADER ALTON

Simon, Christopher

Kyle Richard G

Klee Ann R.

SHADER ALTON

Krause Kenneth D.

CUNNINGHAM SEAN LAURENCE

Flynn Karen

Wheadon David E.

PETRELLA VINCENT K

Neary James