IRB Brasil Resseguros S A : Notice to the Market - Monthly results - August 2021

IRB-BRASIL RESSEGUROS S.A.

Corporate Taxpayer's ID (CNPJ): 33.376.989/0001- 91

Company Registry (NIRE): 333.0030917-9

Publicly-held Company

NOTICE TO THE MARKET

Rio de Janeiro, October 21, 2021 - IRB-Brasil Resseguros S.A. (B3: IRBR3) ("IRB Brasil RE" or "Company"), pursuant to CVM Resolution No. 44/2021, informs its shareholders and the market in general, that it filed the monthly periodic report to Brazil's Insurance Regulator - SUSEP, through the FIP - Periodic Information Form.

For better understanding, given that the FIP form meets the requirements of accounts demanded by the regulator, the Company has disclosed on its website, a spreadsheet with financial data for August 2021, which reconciles the SUSEP information with the Business Vision model. It should be noted that these data are subject to change and have not been audited.

It is important to point out that the nature of our activity is subject to monthly seasonality and, therefore, monthly information should not be considered for projections of results for the upcoming months.

The highlights of August 2021 and eight-month period information are found as follows:

Written Premium:

Month: It totaled R$750.5 million, a 7.6% increase compared to August 2020, split into R$454.7 million in Brazil and R$295.8 million abroad. Written premium in Brazil increased 27.2% compared to August 2020, while the international segment reduced 13.0%.

YTD: In the first eight months of 2021, written premium of R$6,008.4 million decreased by 11.4%, compared to the same period in 2020, with R$3,673.6 million in Brazil (+7.5%) and R$2,334.7 million abroad (-30.6%). The reduction in premium originated abroad is in line with the re-underwriting strategy widely publicized by the Company.

Claim Expense:

Month: The claim expense in August 2021 was R$533.7 million, 10.1% lower than August 2020 (R$593.8 million).

YTD: The accumulated loss ratio in 2021 was 87.2%, equivalent to a claim expense of R$3,699.9 million, an improvement of 16.5 p.p. over the first eight months of 2020, of which loss ratio was 103.7% or R$4,718.9 million. The loss ratio, excluding the run-off business effects in the first eight months is 80.8%.

Net Income:

Month: Net income in August was of R$84.8 million, impacted by the positive one-off effect of R$129.4 million in the bottom line, due to a lawsuit related to PIS/PASEP decided in favor of the Company.

YTD: The Company recorded net loss of R$168.9 million, compared to net loss in the first eight months of 2020 of R$734.0 million (a decrease in loss of 77%). Excluding the one-off and run-off effects in the first eight months of 2021, the Company presents a negative net income of R$36.1 million, an improvement of R$570.6 million compared to the normalized result of the same period in 2020.

Details and further explanation of the Company's results will be presented at the time of the quarterly information disclosure, scheduled for 11/11/2021.

The spreadsheet with more detailed historical data can be accessed at Interactive Spreadsheets / Historical Data

• IRB Brasil (irbre.com). The full report submitted to SUSEP, from which all data in this press release is derived, can be accessed at: http://www2.susep.gov.br/menuestatistica/SES/principal.aspx.

Werner Romera Süffert

Chief Financial and Investor Relations Officer

Investor Relations |[e-mail]|