The Vanguard Group's Disclosure on Big Yellow Group plc

The Vanguard Group, Inc. has released Form 8.3, concerning its interests in Big Yellow Group plc, as per Rule 8.3 of the Takeover Code. This disclosure highlights an ownership of 10,909,992 shares, representing 5.54% of Big Yellow Group's ordinary 10p securities, as of November 13, 2025.

During this period, Vanguard made a sale of 1,766 units at a price of 11.04 GBP per unit. No additional derivative transactions, rights to new securities, agreements, or understandings regarding these shares were reported. The disclosure confirms no cash-settled or stock-settled derivatives involving Big Yellow's securities.

The statement concludes with no further agreements or indemnities concerning the company's securities. This disclosure is intended for compliance with regulatory requirements, providing transparency concerning Vanguard's shareholdings and transactions.