STERIS plc (STE) Insider Transactions

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 3,117 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 588 on June 4, 2027; 576 on June 3, 2028; 798 on January 2, 2029 and 1,155 on June 4, 2029.

F2 329 shares were withheld from the 1,128 restricted shares that vested on June 2, 2026. These 329 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 Units representing 255 ordinary share equivalents are held on behalf of the Reporting Person under the STERIS Corporation 401(k) Plan as of May 29, 2026.

F4 This option becomes exercisable as follows: 1,009 on June 2, 2027, 1,009 on June 2, 2028, 1,009 on June 4, 2029 and 1,009 on June 3, 2030.

References: F4

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 3,117 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 588 on June 4, 2027; 576 on June 3, 2028; 798 on January 2, 2029 and 1,155 on June 4, 2029.

F2 329 shares were withheld from the 1,128 restricted shares that vested on June 2, 2026. These 329 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 Units representing 255 ordinary share equivalents are held on behalf of the Reporting Person under the STERIS Corporation 401(k) Plan as of May 29, 2026.

F4 This option becomes exercisable as follows: 1,009 on June 2, 2027, 1,009 on June 2, 2028, 1,009 on June 4, 2029 and 1,009 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 3,117 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 588 on June 4, 2027; 576 on June 3, 2028; 798 on January 2, 2029 and 1,155 on June 4, 2029.

F2 329 shares were withheld from the 1,128 restricted shares that vested on June 2, 2026. These 329 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 Units representing 255 ordinary share equivalents are held on behalf of the Reporting Person under the STERIS Corporation 401(k) Plan as of May 29, 2026.

F4 This option becomes exercisable as follows: 1,009 on June 2, 2027, 1,009 on June 2, 2028, 1,009 on June 4, 2029 and 1,009 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 10,047 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 2,379 on June 4, 2027; 2,922 on June 5, 2028 and 4,746 on June 4, 2029.

F2 67 shares were withheld from the 2,140 restricted shares that vested on June 2, 2026. These 67 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 Units representing 67 ordinary share equivalents are held on behalf of the Reporting Person under the STERIS Corporation 401(k) Plan as of May 29, 2026.

F4 This option becomes exercisable as follows: 4,137 on June 2, 2027, 4,137 on June 2, 2028, 4,137 on June 4, 2029 and 4,137 on June 3, 2030.

References: F4

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 10,047 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 2,379 on June 4, 2027; 2,922 on June 5, 2028 and 4,746 on June 4, 2029.

F2 67 shares were withheld from the 2,140 restricted shares that vested on June 2, 2026. These 67 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 Units representing 67 ordinary share equivalents are held on behalf of the Reporting Person under the STERIS Corporation 401(k) Plan as of May 29, 2026.

F4 This option becomes exercisable as follows: 4,137 on June 2, 2027, 4,137 on June 2, 2028, 4,137 on June 4, 2029 and 4,137 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 10,047 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 2,379 on June 4, 2027; 2,922 on June 5, 2028 and 4,746 on June 4, 2029.

F2 67 shares were withheld from the 2,140 restricted shares that vested on June 2, 2026. These 67 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 Units representing 67 ordinary share equivalents are held on behalf of the Reporting Person under the STERIS Corporation 401(k) Plan as of May 29, 2026.

F4 This option becomes exercisable as follows: 4,137 on June 2, 2027, 4,137 on June 2, 2028, 4,137 on June 4, 2029 and 4,137 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 5,398 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 666 on June 3, 2026; 542 on June 4, 2026; 772 on June 2, 2027; 666 on June 3, 2027; 542 on June 4, 2027; 772 on June 2, 2028; 666 on June 5, 2028 and 772 on June 4, 2029.

F2 127 shares were withheld from the 352 restricted shares that vested on June 2, 2026. These 127 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 2,020 on June 2, 2027, 2,020 on June 2, 2028, 2,020 on June 4, 2029 and 2,020 on June 3, 2030.

References: F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 5,398 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 666 on June 3, 2026; 542 on June 4, 2026; 772 on June 2, 2027; 666 on June 3, 2027; 542 on June 4, 2027; 772 on June 2, 2028; 666 on June 5, 2028 and 772 on June 4, 2029.

F2 127 shares were withheld from the 352 restricted shares that vested on June 2, 2026. These 127 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 2,020 on June 2, 2027, 2,020 on June 2, 2028, 2,020 on June 4, 2029 and 2,020 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 5,398 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 666 on June 3, 2026; 542 on June 4, 2026; 772 on June 2, 2027; 666 on June 3, 2027; 542 on June 4, 2027; 772 on June 2, 2028; 666 on June 5, 2028 and 772 on June 4, 2029.

F2 127 shares were withheld from the 352 restricted shares that vested on June 2, 2026. These 127 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 2,020 on June 2, 2027, 2,020 on June 2, 2028, 2,020 on June 4, 2029 and 2,020 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 5,115 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 630 on June 3, 2026; 513 on June 4, 2026; 733 on June 2, 2027; 630 on June 3, 2027; 513 on June 4, 2027; 733 on June 2, 2028; 630 on June 5, 2028 and 733 on June 4, 2029.

F2 66 shares were withheld from the 225 restricted shares that vested on June 2, 2026. These 66 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 1,917 on June 2, 2027, 1,917 on June 2, 2028, 1,917 on June 4, 2029 and 1,917 on June 3, 2030.

References: F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 5,115 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 630 on June 3, 2026; 513 on June 4, 2026; 733 on June 2, 2027; 630 on June 3, 2027; 513 on June 4, 2027; 733 on June 2, 2028; 630 on June 5, 2028 and 733 on June 4, 2029.

F2 66 shares were withheld from the 225 restricted shares that vested on June 2, 2026. These 66 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 1,917 on June 2, 2027, 1,917 on June 2, 2028, 1,917 on June 4, 2029 and 1,917 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 5,115 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 630 on June 3, 2026; 513 on June 4, 2026; 733 on June 2, 2027; 630 on June 3, 2027; 513 on June 4, 2027; 733 on June 2, 2028; 630 on June 5, 2028 and 733 on June 4, 2029.

F2 66 shares were withheld from the 225 restricted shares that vested on June 2, 2026. These 66 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 1,917 on June 2, 2027, 1,917 on June 2, 2028, 1,917 on June 4, 2029 and 1,917 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 7,554 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 835 on June 3, 2026; 1,360 on June 4, 2026; 1,003 on June 2, 2027; 835 on June 3, 2027; 680 on June 4, 2027; 1,003 on June 2, 2028; 835 on June 5, 2028 and 1,003 on June 4, 2029.

F2 591 shares were withheld from the 2,028 restricted shares that vested on June 2, 2026. These 591 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 2,623 on June 2, 2027, 2,623 on June 2, 2028, 2,623 on June 4, 2029 and 2,623 on June 3, 2030.

References: F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 7,554 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 835 on June 3, 2026; 1,360 on June 4, 2026; 1,003 on June 2, 2027; 835 on June 3, 2027; 680 on June 4, 2027; 1,003 on June 2, 2028; 835 on June 5, 2028 and 1,003 on June 4, 2029.

F2 591 shares were withheld from the 2,028 restricted shares that vested on June 2, 2026. These 591 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 2,623 on June 2, 2027, 2,623 on June 2, 2028, 2,623 on June 4, 2029 and 2,623 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 7,554 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 835 on June 3, 2026; 1,360 on June 4, 2026; 1,003 on June 2, 2027; 835 on June 3, 2027; 680 on June 4, 2027; 1,003 on June 2, 2028; 835 on June 5, 2028 and 1,003 on June 4, 2029.

F2 591 shares were withheld from the 2,028 restricted shares that vested on June 2, 2026. These 591 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 2,623 on June 2, 2027, 2,623 on June 2, 2028, 2,623 on June 4, 2029 and 2,623 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 50,113 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 5,937 on June 3, 2026; 4,283 on June 4, 2026; 7,912 on June 2, 2027; 5,937 on June 3, 2027; 4,283 on June 4, 2027; 7,912 on June 2, 2028; 5,937 on June 5, 2028 and 7,912 on June 4, 2029.

F2 995 shares were withheld from the 2,369 restricted shares that vested on June 2, 2026. These 995 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 20,685 on June 2, 2027, 20,685 on June 2, 2028, 20,685 on June 4, 2029 and 20,685 on June 3, 2030.

References: F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 50,113 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 5,937 on June 3, 2026; 4,283 on June 4, 2026; 7,912 on June 2, 2027; 5,937 on June 3, 2027; 4,283 on June 4, 2027; 7,912 on June 2, 2028; 5,937 on June 5, 2028 and 7,912 on June 4, 2029.

F2 995 shares were withheld from the 2,369 restricted shares that vested on June 2, 2026. These 995 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 20,685 on June 2, 2027, 20,685 on June 2, 2028, 20,685 on June 4, 2029 and 20,685 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 50,113 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 5,937 on June 3, 2026; 4,283 on June 4, 2026; 7,912 on June 2, 2027; 5,937 on June 3, 2027; 4,283 on June 4, 2027; 7,912 on June 2, 2028; 5,937 on June 5, 2028 and 7,912 on June 4, 2029.

F2 995 shares were withheld from the 2,369 restricted shares that vested on June 2, 2026. These 995 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 20,685 on June 2, 2027, 20,685 on June 2, 2028, 20,685 on June 4, 2029 and 20,685 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 10,239 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 651 on June 3, 2026; 306 on June 4, 2026; 783 on October 1, 2026; 1,775 on June 2, 2027; 651 on June 3, 2027; 306 on June 4, 2027; 783 on October 1, 2027; 1,775 on June 2, 2028; 651 on June 5, 2028 and 783 on October 1, 2028 and 1,775 on June 4, 2029.

F2 66 shares were withheld from the 225 restricted shares that vested on June 2, 2026. These 66 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 4,641 on June 2, 2027, 4,641 on June 2, 2028, 4,641 on June 4, 2029 and 4,641 on June 3, 2030.

References: F3

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 10,239 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 651 on June 3, 2026; 306 on June 4, 2026; 783 on October 1, 2026; 1,775 on June 2, 2027; 651 on June 3, 2027; 306 on June 4, 2027; 783 on October 1, 2027; 1,775 on June 2, 2028; 651 on June 5, 2028 and 783 on October 1, 2028 and 1,775 on June 4, 2029.

F2 66 shares were withheld from the 225 restricted shares that vested on June 2, 2026. These 66 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 4,641 on June 2, 2027, 4,641 on June 2, 2028, 4,641 on June 4, 2029 and 4,641 on June 3, 2030.

References: F2, F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 As of June 2, 2026, 10,239 of these ordinary shares are restricted. The restrictions on these ordinary shares lapse as follows: 651 on June 3, 2026; 306 on June 4, 2026; 783 on October 1, 2026; 1,775 on June 2, 2027; 651 on June 3, 2027; 306 on June 4, 2027; 783 on October 1, 2027; 1,775 on June 2, 2028; 651 on June 5, 2028 and 783 on October 1, 2028 and 1,775 on June 4, 2029.

F2 66 shares were withheld from the 225 restricted shares that vested on June 2, 2026. These 66 shares represent the value of the taxes required to be withheld pursuant to applicable employment or tax laws, as determined by the Issuer. These vested shares were valued at the NYSE closing market price on June 2, 2026.

F3 This option becomes exercisable as follows: 4,641 on June 2, 2027, 4,641 on June 2, 2028, 4,641 on June 4, 2029 and 4,641 on June 3, 2030.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Each Career Restricted Stock Unit represents the right to receive one STERIS ordinary share six months after the cessation of the Director's Board service.

F2 These Career Restricted Stock Units are fully vested immediately. They will be settled in STERIS ordinary shares six months after the cessation of the Director's Board service.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Price reflects a weighted average sale price for multiple transactions ranging from $209.50 to $209.53 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 Richard C. Breeden is the managing member of Breeden Capital Partners LLC, and managing member and chairman and chief executive officer of Breeden Capital Management LLC. Breeden Capital Partners LLC (the "General Partner") is in turn the general partner of Breeden Partners L.P. (the "Fund").

F3 Pursuant to Rule 16a-1(a)(2)(ii)(B) of the Securities Exchange Act of 1934, as amended, Mr. Breeden in his capacity as managing member, as well as chairman and chief executive officer of Breeden Capital Management LLC and as the managing member of Breeden Capital Partners LLC, may be deemed to be the indirect beneficial owner of the ordinary shares owned by the Fund and its General Partner, and may be deemed to have beneficial ownership of all such shares. Mr. Breeden disclaims beneficial ownership over 1,358 of these shares held by Breeden Partnership LLP.

F4 This option to purchase 3,781 STERIS plc ordinary shares, which is fully vested, was received in connection with the redomiciliation of STERIS plc to Ireland in March 2019 in exchange for an option to purchase 3,781 ordinary shares for $71.40 per share in STERIS plc prior to the redomiciliation ("Old STERIS"), subject to the same terms and conditions as the original Old STERIS stock option.

References: F4

Reported filing row; may be amended. Do not sum filings blindly.

F1 Price reflects a weighted average sale price for multiple transactions ranging from $209.50 to $209.53 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 Richard C. Breeden is the managing member of Breeden Capital Partners LLC, and managing member and chairman and chief executive officer of Breeden Capital Management LLC. Breeden Capital Partners LLC (the "General Partner") is in turn the general partner of Breeden Partners L.P. (the "Fund").

F3 Pursuant to Rule 16a-1(a)(2)(ii)(B) of the Securities Exchange Act of 1934, as amended, Mr. Breeden in his capacity as managing member, as well as chairman and chief executive officer of Breeden Capital Management LLC and as the managing member of Breeden Capital Partners LLC, may be deemed to be the indirect beneficial owner of the ordinary shares owned by the Fund and its General Partner, and may be deemed to have beneficial ownership of all such shares. Mr. Breeden disclaims beneficial ownership over 1,358 of these shares held by Breeden Partnership LLP.

F4 This option to purchase 3,781 STERIS plc ordinary shares, which is fully vested, was received in connection with the redomiciliation of STERIS plc to Ireland in March 2019 in exchange for an option to purchase 3,781 ordinary shares for $71.40 per share in STERIS plc prior to the redomiciliation ("Old STERIS"), subject to the same terms and conditions as the original Old STERIS stock option.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Price reflects a weighted average sale price for multiple transactions ranging from $209.50 to $209.53 per share, inclusive. The Reporting Person undertakes to provide, upon request by the SEC Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 Richard C. Breeden is the managing member of Breeden Capital Partners LLC, and managing member and chairman and chief executive officer of Breeden Capital Management LLC. Breeden Capital Partners LLC (the "General Partner") is in turn the general partner of Breeden Partners L.P. (the "Fund").

F3 Pursuant to Rule 16a-1(a)(2)(ii)(B) of the Securities Exchange Act of 1934, as amended, Mr. Breeden in his capacity as managing member, as well as chairman and chief executive officer of Breeden Capital Management LLC and as the managing member of Breeden Capital Partners LLC, may be deemed to be the indirect beneficial owner of the ordinary shares owned by the Fund and its General Partner, and may be deemed to have beneficial ownership of all such shares. Mr. Breeden disclaims beneficial ownership over 1,358 of these shares held by Breeden Partnership LLP.

F4 This option to purchase 3,781 STERIS plc ordinary shares, which is fully vested, was received in connection with the redomiciliation of STERIS plc to Ireland in March 2019 in exchange for an option to purchase 3,781 ordinary shares for $71.40 per share in STERIS plc prior to the redomiciliation ("Old STERIS"), subject to the same terms and conditions as the original Old STERIS stock option.

References: