Proximus SA

Transaction in Own Shares • Dec 15, 2025

Press Release

Brussels, 15 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 157,999 own shares during the period between 08 December 2025 and 12 December 2025 on Euronext Brussels.

During the same period, Kepler-Cheuvreux on behalf of Proximus has sold 149,100 own shares and consequently this results in a net increase of 8,899 own shares.

Purchase operations details per day

Date	Number of shares	Average price (€)	Highest price (€)	Lowest price (€)	Amount (€)
8-Dec-25	37.999	7,01	7,08	6,95	266.373
9-Dec-25	32.511	7,03	7,05	6,96	228.552
10-Dec-25	37.489	7,01	7,07	6,95	262.798
11-Dec-25	36.000	6,96	7,00	6,93	250.560
12-Dec-25	14.000	7,00	7,06	6,97	98.000
Total	157.999	7,00	7,08	6,93	1.106.283

Sell operations details per day

Date	Number of shares	Average price (€)	Highest price (€)	Lowest price (€)	Amount (€)
8-Dec-25	4.870	7,08	7,11	7,07	34.480
9-Dec-25	42.436	7,04	7,11	6,97	298.749
10-Dec-25	23.446	7,04	7,09	6,99	165.060
11-Dec-25	35.271	6,97	7,01	6,94	245.839
12-Dec-25	43.077	7,04	7,11	6,98	303.262
Total	149.100	7,02	7,11	6,94	1.047.390

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 14,969,149 own shares or 4.428% 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