Rule 19.6(C) Confirmation

THIS ANNOUNCEMENT IS BEING MADE PURSUANT TO THE REQUIREMENTS OF RULE 19.6(c) OF THE CITY CODE ON TAKEOVERS AND MERGERS (THE "CODE") WHICH, INTER ALIA, REQUIRES A PARTY TO AN OFFER TO MAKE AN ANNOUNCEMENT AT THE END OF A PERIOD OF 12 MONTHS FROM THE DATE ON WHICH THE OFFER PERIOD ENDED CONFIRMING WHETHER IT HAS TAKEN, OR NOT TAKEN, THE COURSE OF ACTION SET OUT IN ITS STATED INTENTIONS

For immediate release

15 October 2026

Keysight Technologies Inc. ("Keysight")

Rule 19.6(c) confirmation with respect to post-offer intention statements regarding Spirent Communications plc ("Spirent")

Keysight announces that, further to the completion of its recommended cash offer for the entire issued and to be issued share capital of Spirent, which was implemented by way of a Court-sanctioned scheme of arrangement under Part 26 of the Companies Act 2006 and became effective on 15 October 2025, it has duly confirmed in writing to The Panel on Takeovers and Mergers in accordance with the requirements of Rule 19.6(c) of the Code that it has complied with the post-offer intention statements made pursuant to Rule 2.7(c)(viii) and Rule 24.2 of the Code, as detailed in its announcement made under Rule 2.7 of the Code on 28 March 2024 and in the scheme document published on 25 April 2024.