He was a bronze medalist at the 2023 European Athletics Indoor Championships where he became the Ukrainian national record holder.

[1] He began training in Portugal in 2021 under the guidance of the Ukrainian coach Volodymyr Zinchenko.

[2] The following summer he marked a new personal best throw of 21.23 metres at an event in Lisbon.

[4] Kokoshko set a new national shot put record in winning the bronze medal at the 2023 European Athletics Indoor Championships in Istanbul, on March 3, 2023.

[6] In December 2024, Kokoshko was provisionally suspended from competition for an alleged anti-doping rule violation in relation to whereabouts failures.