NOS SGPS

Capital/Financing Update • Jan 12, 2026

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NOS, SGPS, S.A.

Registered Office: Rua Ator António Silva 9 – Campo Grande 1600-404 Lisbon
Registered in the Commercial Registry Office of Lisbon
and Corporation no. 504 453 513
Share Capital: 257,580,690.00 Euros

"NOS SUSTAINABILITY-LINKED BONDS JULY 2026"

Interest Payment - Coupon Nr. 8 Redemption

We hereby give notice to holders of "NOS SUSTAINABILITY-LINKED BONDS JULY 2026" bonds that, in accordance with the terms of issue, payment of the interest in relation to Coupon Nr. 8 and final redemption will be made as from 19 January 2026, in the following amounts per bond:

Gross Interest (*)

Unit (€)	643.066666666667
Redemption (*)
Unit (€)	100,000.00

^* Subject to withholding IRS / IRC in accordance with the tax rules and rates applicable at the date of payment.

Under the terms of its Regulation, the interest payment will be made through the Share Register's Office (Central de Valores Mobiliários) with the Code NOSMOM.

The financial intermediary responsible for the operation is Caixa - Banco de Investimento, S.A..

This information is also available on NOS's Investor Relations website in www.nos.pt/ir.

Lisbon, 12 January 2026

Contacts

Pedro Cota Dias Head of Investor Relations & Corporate Finance

Email: ir@nos.pt

Tel.: +351 21 782 4700 Fax: +351 21 782 4735