Denis Demianenko
Denis Demianenko, born 1977. Charges: Article 205.3, Russian Criminal Code (Receiving training for the commission of terrorist crimes); Article 205.5 part 2, Russian Criminal Code (Participation in the activities of a terrorist organization); “Denis Demianenko’s case of participation in the activities of a terrorist organisation”. Sentence (September 11, 2025): 19 years’ imprisonment, of which the first 3 years in a prison and the rest in a strict regime colony. Status: imprisoned; deprived of liberty since October 14, 2025. Recognition: Memorial: Support for Political Prisoners — recognised as a political prisoner, February 17, 2026.
In brief
Military personnel · Terrorism cases
Sentence
19 years
imprisonment, of which the first 3 years in a prison and the rest in a strict regime colony
No information about an appeal ruling.
Charges
- Article 205.3, Russian Criminal Code — Receiving training for the commission of terrorist crimes
- Article 205.5 part 2, Russian Criminal Code — Participation in the activities of a terrorist organization
Full wording of the charges
According to the investigation, in May 2024 he joined the Ukrainian 24th assault Aidar Battalion and underwent military training in the city of Kramatorsk in the Donetsk region, after which he fought against the Russian army as a gunner.
Latest event
February 17, 2026 — recognised as a political prisoner
Memorial: Support for Political Prisoners
Recognition by rights defenders
- Recognised as a political prisoner — Memorial: Support for Political Prisoners, February 17, 2026
Timeline
· Recognised as a political prisoner
Memorial: Support for Political Prisoners
· Imprisonment begins
· First-instance verdict
guilty verdict · 19 years
· Added to the Rosfinmonitoring list of “terrorists and extremists”
Criminal case
Denis Demianenko’s case of participation in the activities of a terrorist organisation
- Case number
- 1-515/2025
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The address is not listed in the database.
Details and sources
Full summary
He is a Ukrainian serviceman. In the spring of 2024, he was taken prisoner. A case was initiated against him for participation in the activities of a terrorist organisation due to his involvement in the activities of the "Aidar" Battalion. In June 2025, the case went to court. On 11 September 2025, Demianenko was sentenced to 19 years in a strict regime colony.
All fields of the record
- Citizenship
- Ukraine
Other people prosecuted under Article 205.3, Russian Criminal Code
Under the same article, not necessarily in the same case.