Proximus SA

Major Shareholding Notification • Dec 29, 2025

Press Release

Brussels, 29 December 2025, 18:00 local time Regulated information

Repurchase of shares in the context of the liquidity contract

In the framework of the liquidity contract (see press release dated Mar. 1st, 2016), Proximus announces today that Kepler-Cheuvreux on behalf of Proximus has bought 51,116 own shares during the period between 22 December 2025 and 26 December 2025 on Euronext Brussels.

During the same period, Kepler-Cheuvreux on behalf of Proximus has sold 54,431 own shares and consequently this results in a net reduction of 3,315 own shares.

Purchase operations details per day

Date	Number of shares	Average price (€)	Highest price (€)	Lowest price (€)	Amount (€)
22-Dec-25	20.000	6,9400	6,9700	6,9000	138.800,0000
23-Dec-25	14.994	6,9500	6,9700	6,9300	104.208,3000
24-Dec-25	16.122	6,9900	7,0200	6,9600	112.692,7800
25-Dec-25
26-Dec-25
Total	51.116	6,96	7,02	6,90	355.701

Sell operations details per day

Date	Number of shares	Average price (€)	Highest price (€)	Lowest price (€)	Amount (€)
22-Dec-25	16.431	6,9700	6,9900	6,9500	114.524,0700
23-Dec-25	16.000	6,9800	6,9900	6,9600	111.680,0000
24-Dec-25	22.000	7,0300	7,0800	6,9800	154.660,0000
25-Dec-25
26-Dec-25
Total	54.431	7,00	7,08	6,95	380.864

The summary of the transactions realized in the framework of the liquidity contract launched on March 1st, 2016 is available on the corporate website.

Currently, Proximus owns 14,978,577 own shares or 4.431% of the total shares outstanding.

More info

• https://www.proximus.com/en/investors
• Press Relations : Haroun Fenaux, telephone +32 476 60 03 33, email press@proximus.com
• Investor Relations : Nancy Goossens, telephone +32 2.202 82 41, email investor.relations@proximus.com
• About the Proximus Group