X0306 4 2022-07-29 1 0001794905 Cyxtera Technologies, Inc. CYXT 0001875666 SIS Holdings LP 2333 PONCE DE LEON BOULEVARD, SUITE 900 CORAL GABLES FL 33134 0 0 1 0 0001876892 BCEC - Cyxtera Technologies Holdings (Guernsey) L.P. ARNOLD HOUSE PO BOX 273 ST JULIAN'S AVENUE ST PETER PORT Y7 GY1 3RD GUERNSEY 0 0 1 0 0001875713 SIS Holdings GP LLC 2333 PONCE DE LEON BOULEVARD, SUITE 900 CORAL GABLES FL 33134 0 0 1 0 Class A Common Stock 2022-07-29 4 J 0 109850000 0.00 D 0 I By SIS Holdings LP Represents a pro-rata distribution in-kind by SIS Holdings LP to its members for no consideration. The general partner of SIS Holdings LP is SIS Holdings GP, LLC, which is managed by a board of directors, a majority of which is appointed by BCEC-SIS Holdings L.P. (the "BC Stockholder"). The general partners of each of the BC Stockholder and BCEC Cyxtera Technologies Holdings (Guernsey) L.P. are CIE Management IX Limited and BCEC Management X Limited, which are controlled by the board of directors, which are appointed by BC Partners Group Holdings Limited, which is a majority owned subsidiary of BC Partners Holdings Limited, which is controlled by Lee Clark, Karen Jamieson and Mark Rodliffe. SIS Holdings LP, By: SIS Holdings GP, LLC, its General Partner, By: /s/ Manuel D. Medina, Name: Manuel D. Medina, Title: Chief Executive Officer 2022-08-02 SIS Holdings GP LLC, By: /s/ Manuel D. Medina, Name: Manuel D. Medina, Title: Chief Executive Officer 2022-08-02 BCEC - Cyxtera Technologies Holdings (Guernsey) L.P., By: /s/ Lee Clark, Name: Lee Clark, Title: Director of the General Partners 2022-08-02