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Form SCHEDULE 13G Sotera Health Co Filed by: Sachem Head Capital Management LP

May 15, 2026 4:39 PM





Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G




Comment for Type of Reporting Person: The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).


SCHEDULE 13G




Comment for Type of Reporting Person: The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).


SCHEDULE 13G




Comment for Type of Reporting Person: The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).


SCHEDULE 13G




Comment for Type of Reporting Person: The percentages used herein are calculated based upon 285,166,994 shares of Common Stock outstanding (as reported in the Issuer's Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on May 5, 2026).


SCHEDULE 13G



Sachem Head Capital Management LP
Signature:/s/ Scott D. Ferguson
Name/Title:Managing Member
Date:05/15/2026
Uncas GP LLC
Signature:/s/ Scott D. Ferguson
Name/Title:Managing Member
Date:05/15/2026
Sachem Head GP LLC
Signature:/s/ Scott D. Ferguson
Name/Title:Managing Member
Date:05/15/2026
Ferguson Scott D.
Signature:/s/ Scott D. Ferguson
Name/Title:Managing Member
Date:05/15/2026
Exhibit Information

EXHIBIT 1 JOINT ACQUISITION STATEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate. DATED: May 15, 2026 SACHEM HEAD CAPITAL MANAGEMENT LP By: Uncas GP LLC, its General Partner By: /s/ Scott D. Ferguson Scott D. Ferguson Managing Member UNCAS GP LLC By: /s/ Scott D. Ferguson Scott D. Ferguson Managing Member SACHEM HEAD GP LLC By: /s/ Scott D. Ferguson Scott D. Ferguson Managing Member /s/ Scott D. Ferguson Scott D. Ferguson

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