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Sotera Health Sotera Health Reports First - Quarter 2021 Results Exhibit 99.1 • • • • • • Q1 2021 net revenues of $ 212 million increased 13 % , compared to Q1 2020 Q1 2021 net income of $ 11 million or $ 0.04 per diluted share , compared to a net loss of $ 2 million or $ 0.01 per diluted share in Q1 2020 ; Q1 2021 includes $ 14 million of expense related to the repricing of the Company's Term Loan Q1 2021 Adjusted EBITDA of $ 105 million increased 15 % , compared to Q1 2020 Q1 2021 Adjusted EPS increased 80 % to $ 0.18 , compared to Q1 2020 Adjusted EPS of $ 0.10 March 31 , 2021 total debt of $ 1.87 billion , net debt of $ 1.79 billion , and net leverage ratio improved to 4.1x Company reaffirms 2021 Outlook CLEVELAND , OH , May 13 , 2021 - Sotera Health Company ( " Sotera Health " or the " Company " ) ( Nasdaq : SHC ) , a leading global provider of mission - critical end - to - end sterilization solutions , lab testing and advisory services for the healthcare industry , today announced financial results for the three months ended March 31 , 2021 . First - quarter 2021 net revenues increased 13 % to $ 212 million , compared with $ 188 million in the first - quarter a year ago . Net income attributable to Sotera Health ( " net income " ) was $ 11 million , or $ 0.04 per diluted share , compared with a net loss of $ 2 million , or $ 0.01 per diluted share in the first - quarter 2020. First - quarter 2021 net income included $ 14 million of expense related to the repricing of the Company's first lien term loan ( " Term Loan ” ) , $ 11 million of which was non - cash . Adjusted EBITDA for the first - quarter 2021 increased by approximately 15 % over the prior - year quarter to $ 105 million . First - quarter 2021 Adjusted Earnings Per Diluted Share ( " Adjusted EPS " ) was $ 0.18 , compared to $ 0.10 in Q1 2020 , an increase of $ 0.08 per diluted share . Please refer to the section " Non - GAAP Financial Measures " provided later in this release . " We are off to a strong start in 2021 , reporting double - digit revenue growth , meaningful net income growth , and double - digit Adjusted EBITDA growth in the first quarter , " said Chairman and Chief Executive Officer , Michael B. Petras , Jr. " All three of our segments achieved solid revenue and segment income growth for the quarter , while managing ongoing challenges as a result of the pandemic . We also continued to execute on our strategic priorities , with the acquisition of BioScience Laboratories , capital deployment towards growth initiatives , and further deleveraging during the quarter . " Petras continued , “ I'm very proud of the entire Sotera Health team for delivering such strong financial and operational performance to start out 2021. These results establish a solid foundation for the remainder of the year , which is why we are comfortable reaffirming our Company's 2021 outlook that we first provided on March 9 , 2021. As we have said in the past , our focus remains on supporting our global team members while ensuring the highest quality of service for our customers . " 1