October 21, 2026, 8:08 AMRSSRU

Sergei Osinovsky

ImprisonedChecked October 21, 2026

Sergei Osinovsky, born 1991, Primorsky Krai. Charges: Article 205.5 part 2, Russian Criminal Code (Participation in the activities of a terrorist organization); Article 275.1, Russian Criminal Code (Confidential cooperation with foreigners); “Sergei Osinovsky's case on confidential cooperation with foreigners and participation in the activities of a terrorist organisation”. Sentence (January 15, 2025): 7 years' imprisonment in a general regime colony. Status: imprisoned; deprived of liberty since March 1, 2024; place of detention: Prison, Krasnoyarsk Krai.

In brief

Primorsky Krai · Terrorism cases

Sentence

7 years

imprisonment in a general regime colony

Verdict January 15, 2025

Upheld April 14, 2025

Charges

Full wording of the charges

According to the investigation, wishing to join the recognized terrorist Legion of Freedom of Russia, from October 2023 to March 2024, in Telegram he maintained cooperation with representatives of the organisation, "over the course of which he agreed to assist in planning terrorist acts in military and civilian infrastructure facilities in Russia". He collected and passed on information about its security and the security regime of the military commissariat of Dalnegorsk and the Terneisky district of Primorsky Krai, as well as the intended escape routes after committing arson.

Latest event

April 28, 2025 — added to the rosfinmonitoring list of “terrorists and extremists”

Checked October 21, 2026 · no changes since October 15

Timeline

  1. · Added to the Rosfinmonitoring list of “terrorists and extremists”

  2. · Appeal ruling

    upheld

  3. · First-instance verdict

    guilty verdict · 7 years

  4. · Persecution begins

    Sergei Osinovsky's case on confidential cooperation with foreigners and participation in the activities of a terrorist organisation

  5. · Preventive measure: pre-trial detention

    Pre-trial Detention Centre №1 (SIZO-1) of the Federal Penitentiary Service of Russian Federation for Primorsky Territory

Criminal case

Sergei Osinovsky's case on confidential cooperation with foreigners and participation in the activities of a terrorist organisation

There are no other defendants in this case in the database.

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Facility: Prison, Krasnoyarsk Krai

Address (in Russian, as written on the envelope)

662606, ул. Горького д. 114 Тюрьма, Красноярский край, г. Минусинск, ФКУ «Тюрьма ГУФСИН России по Красноярскому краю», Осиновский Сергей Андреевич, 1991 г.р.

Address checked October 21, 2026

Details and sources

Full summary

According to OVD-Info

A resident of Primorsky Krai. On 12 March 2024, he was detained and then taken into custody. A case was initiated against him on confidential cooperation with foreigners and preparation for participation in the activities of a terrorist organisation. According to the version of the investigation, he intended to join the ranks of the Freedom of Russia Legion and passed to the alleged representatives of the unit information about the work of the military recruitment centre and the possibility of its arson. On 16 January 2025, Osinovsky was sentenced to seven years in a strict regime colony.

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Citizenship
Russia

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