The Vanguard Group Discloses Position in Senior plc

The Vanguard Group, Inc. has revealed its position in Senior plc through a Form 8.3 submitted in compliance with Rule 8.3 of the Takeover Code. The disclosure, dated March 23, 2026, provides key information about Vanguard's interest in Senior plc's relevant securities.

Vanguard holds 21,686,339 ordinary shares of Senior plc, representing a 5.17% interest. The disclosure also detailed recent transactions involving Senior plc's securities. Vanguard purchased 31,323 shares at 2.66 GBP each and sold 11,532 shares at the same price.

No additional agreements, arrangements, or understandings related to options or derivatives were declared. Furthermore, there are no new indemnity or other dealing arrangements to report. Vanguard confirms that no Supplemental Form 8 regarding open stock-settled positions is attached.