Sergey Alexandrovich Oleinik is one of the names featured in the diagram of criminal networks in Ukraine as of 4 January 2020, as provided to the editorial team. This profile retains the source’s information for 2020. It does not confirm that this information is still current. [1]
Date of birth in the archive: 05.04.1973. Full name given in Russian.
Names and nicknames from archival signatures, transcribed into Russian: Umka. They are used to cross-reference mentions in the source.
Criminal chronicle of Ukraine: 2020 archive
In the diagram, this entry is located in the following regional sections: Kherson Oblast; Luhansk Oblast; Poltava Oblast; Dnipropetrovsk Oblast; Kyiv Oblast and the city of Kyiv; Zhytomyr Oblast; Kharkiv Oblast; Zaporizhzhia Oblast; Lviv Oblast. This reflects the geographical origin of the archive material and does not confirm the individual’s current place of residence or citizenship.
The source’s caption as at 4 January 2020 is provided below, translated into Russian. All role designations refer to the archival assessment:
- Status: ‘thief-in-law’ Umka
- Status: ‘thief-in-law’ of Umka
Other dated information
10 May 2025. ‘Suspilne’, citing sources within law enforcement agencies, reported the arrest of Sergei Oleinik, known as ‘Umka’, and the removal of special signals from his vehicle. This is a separate incident from 2025: it does not relate to the date of the archive diagram and does not allow us to assert, without further documentation, that the individual remains in custody. [2]
Source and clarification of information
The basis for this record is a PDF provided from the Makondo.net editorial archive. The date 4 January 2020 is specified in the file name; the authorship of the diagram and the official status of the document have not been independently verified. An archive record does not constitute a judicial finding of guilt. [1]
If you notice an error in a name, photograph or archive status, please contact the editorial team. Requests regarding removal from the wanted list, release from custody and the deletion of out-of-date information are considered subject to the provision of supporting documents. You can contact the editorial team via Makondo.net.
