Irb Brasil Resseguros SaBMFBOVESPA: IRBR3

Notice to Shareholders - Base Date Update*

· Issued by Irb Brasil Resseguros Sa
IRB-BRASIL RESSEGUROS S.A. Corporate Taxpayer's ID (CNPJ): 33.376.989/0001- 91 State Registry (NIRE): 333.0030917-9 Publicly Held Company with Authorized Capital NOTICE TO SHAREHOLDERS

Rio de Janeiro, April 06, 2026 - IRB-Brasil Resseguros S.A. (B3: IRBR3) ("IRB(Re)" or "Company"), further to the Shareholders' Notice dated March 31, 2026, the Company hereby informs the updated amount of dividends per share, adjusted by the Selic rate through April 6, 2026 (the record date for shareholding position):

Amounts to be paid as dividends:

Type of distribution

Gross amount per share*

Updated amount**

Dividends

R$ 0.594903944527

R$ 0.616199263258

* Amount disclosed in the Shareholders' Notice dated March 31, 2026

** Amount adjusted by the Selic rate from December 31, 2025 through April 6, 2026

IRB-BRASIL RESSEGUROS S.A. Marcos Pessôa de Queiroz Falcão

CEO & IRO



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