ALTRI, S.G.P.S., S.A. informs on: payment of dividends in cash

Company issuing shares admitted to trading on a regulated market

Registered Office: Rua Manuel Pinto de Azevedo, 818, Porto Share Capital: Euro 25.641.459

Registered in the Oporto Commercial Registry Office under the single registration and taxpayer number 507 172 086

Under the terms and for the purposes of the provisions of CMVM Regulation no. 1/2023, ALTRI, SGPS, S.A. informs the Shareholders that, as from May 28, 2026, the dividends for the year 2025 are payable, with Banco BPI as paying agent:

Gross dividend per share Euro 0.25*

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

Pursuant to the Regulations of the Portuguese Securities Clearing House ("Central de Valores Mobiliários"), the payment of dividends on deposited shares will be made through that Portuguese Securities Clearing House ("Central de Valores Mobiliários") (Code ALT AE).

ALTRI further announces that as from May 26, 2026 (inclusive), the shares will be traded in Euronext Lisbon without being entitled to the referred dividend. The record date will be May 27, 2026.

Oporto, May 12, 2026 ALTRI, SGPS, S.A.

Board of Directors

C O M U N I C A D O