Exhibit 99.1 São Paulo, March 20, 2024 – Vasta Platform Limited (NASDAQ: VSTA) – “Vasta” or the “Company” announces today its financial and operating results for the fourth quarter of 2023 (4Q23) ended December 31, 2023. Financial results are expressed in Brazilian Reais and are presented in accordance with International Financial Reporting Standards (IFRS). HIGHLIGHTS · In the 2023 fiscal year, net revenue increased 18% to R$1,486 million, mostly due to the conversion of ACV into revenue and to the perform ...