Marian-Serhiy Chupak

Education – Bachelor of Journalism from the Faculty of Journalism of Ivan Franko National University of Lviv (2021–2025). I am currently studying for a Master's degree at the National University of Kyiv-Mohyla Academy in the "Anti-Corruption Studies" programme (2025–2027). 

Experience in journalism – more than 5 years. From 2019 to 2022, he wrote scripts for TV stories of the children's TV programme "Rozhevi Okuliary" on the "PravdaTUT Lviv" TV channel. In 2022–2025, as a teacher, he was involved in conducting classes on journalism and media literacy at the "Rozhevi Okuliary" school of journalism for children in Lviv. 

In 2024–2025, he hosted the projects "Naverniuti" and "Populists" on the YouTube channel "Bunt Media". He was on the Channel 24 team from September 2022: he started as a newsfeed editor; from January 2023 he also began working on investigations and long-form materials; from October 2024 he worked exclusively as an investigative journalist. 

He completed training: "Investigate like OCCRP: Ukrainian investigations to international standards" (OCCRP and Slidstvo.Info); "OSINT for journalists: A course on monitoring authorities and budgets" (Bihus.Info). He received 5 grants (2023–2025) for conducting journalistic investigations in the Bihus.Info competition under the project "Supporting the Sustainability of Ukrainian Media" (funded by the Government of Sweden, implemented by Internews Europe). 

In my work I use OSINT, analysis of large data sets, open registers and Prozorro. The investigations led to the imposition of sanctions against a businessman who worked simultaneously on the Ukrainian and Russian markets, and to the first extradition of a Ukrainian citizen from the UAE since the beginning of the full-scale invasion. 

In general, I conduct investigations into corruption, abuses in public procurement, military accountability, sanctions evasion, cybercrime, judicial practice and the activities of state officials.

He worked on the Channel 24 website until June 2026.