The Vanguard Group's Securities Disclosure on Spirent Communications

The Vanguard Group, Inc. has disclosed its position in Spirent Communications plc under Rule 8.3 of the Takeover Code. This disclosure involves relevant securities representing 1% or more of Spirent Communications. As of April 9, 2025, Vanguard holds 29,698,531 shares, equating to 5.11% of Spirent's ordinary shares.

No new securities subscriptions or cash-settled derivatives were noted. However, Vanguard has engaged in recent transactions, purchasing 2,219 shares and selling 13,032 shares at a uniform price of 1.78 GBP per unit. The disclosure does not involve any indemnity agreements or derivative-related voting rights.

A supplemental form concerning open positions is not attached as part of this disclosure, with the form made publicly available on April 10, 2025.