Kazincbarcika

On 14 June 2024, Gábor Erős was appointed as the manager of the club.

In the 2024–25 Nemzeti Bajnokság II season, Kazincbarcika were in the second position before the last matchday. Kazincbarcika was just one point ahead of Vasas. On 25 May 2025, Kazincbarcika drew with Kisvárda FC at the Varkérti stadium, while Vasas SC also drew (2–2) with Budapest Honvéd FC at the Bozsik Aréna. The two draws meant that Kazincbarcika finished in the second position and were promoted to the Nemzeti Bajnokság I for the first time in the club's history. The goal was scored by Nimród Baranyai. The following day, Gábor Erős, the manager, was expected to discuss his future at the club.

In the 2025–26 Nemzeti Bajnokság I season, Kazincbarcika started their first Nemzeti Bajnokság I with a 2–1 defeat from Puskás Akadémia FC at the Pancho Aréna on 27 July 2025. Their second match also ended with a 3–0 defeat from Ferencvárosi TC at the Groupama Arena on 2 August 2025. Their first home match ended with a 2–1 defeat from Debreceni VSC at the Mezőkövesdi Városi Stadion on 8 August 2025. Kazincbarcika's first point was gained when Kazincbarcika drew with Borsod-rivals Diósgyőri VTK at the Diósgyőri Stadion on 16 August 2025. On 20 September 2025, Kaznicbarcika won their first ever Nemzeti Bajnokság I match by beating Újpest FC at the Mezőkövesdi Városi Stadion. The goals were scored by Meshack Ubochioma in the 17th minute and Bence Sós in the 27th minute. However, their victory over Újpest was marred by a 5–0 defeat from Zalaegerszegi TE at the ZTE Arena on 27 September 2025. On 3 October 2025, Kazincbarcika collected three points again by beating MTK Budapest FC 3–1 at their home.

In 2026, it was announced that the team would play their home matches at the Diósgyőri Stadion instead of the Mezőkövesdi Városi Stadion.