Igor Klaja - Founder & CEO of OTCF S.A. Polish entrepreneur and a business visionary. Winner of the Polish edition of the EY Entrepreneur of the Year Award 2021.  Winner of multiple industry awards, including Inwestor bez granic (Investor without Borders), Międzynarodowy Czempion – Wizjoner Ekspansji Zagranicznej (International Champion –Visionary of Foreign Expansion) and Nagroda Polskiej Rady Biznesu im. Jana Kulczyka (Jan Kulczyk Polish Business Roundtable Award).

Sports lover, one who never gives up, always pushes the boundaries and turns each crisis into success. 

He continues to challenge the market. His strategic business goal consists of competing effectively with the biggest sports brands in the world.


OTCF S.A. – owner of the 4F brand - is a company based on passion for sport. It was established in 1995 by Igor Klaja. The company combines sports competence and technologies with the world of fashion and style.

It specialises in designing, manufacturing and sale of sportswear, shoes and accessories for professional athletes as well as amateurs.

Our portfolio includes 7 brands, covering 4F, 4F Junior, 4 Fuel, 4F Spot, Outhorn, SportStyleStory, as well as Under Armour, of which we are the exclusive distributor in Poland. 4F is present in 44 countries on 5 continents.

For over 15 years 4F is present in the world of professional sport: 8 National Olympic Teams were dressed in dedicated collections at 2022 Winter Olympics in Bejing, we are Sponsor/Technical Partner of Polish Ski Federation, Hungarian, Lithuanian and Polish Track and Field Federation, Polish Basketball Association, 3 football clubs of PKO BP Ekstraklasa, all men’s and women’s top basketball clubs and worlds best volleyball club – Grupa Azoty ZAKSA Kędzierzyn-Koźle. 4F is also a team of great athletes as brand ambassadors, including Robert Lewandowski and Anna Lewandowska.