Arbitral Digest

Matter

Iryna Kostiuk v Andrii Kostiuk (Ukraine)

Arbitration between Iryna Kostiuk and Andrii Kostiuk over debt under a share-sale agreement, with Ukrainian proceedings to set aside and enforce its award.

Applicable rules
UNCITRAL Arbitration Rules 2010

Procedural record

  1. 1 September 2025Arbitration

    1 September 2025Arbitration

    Arbitral decision of the ad hoc tribunal in Iryna Kostiuk v Andrii Kostiuk (Ukraine) dated 1 September 2025

    Decision summary
    The arbitral decision ordered OSOBA_1 to pay OSOBA_2 EUR 1,172,548.60 in debt under a share-sale agreement and USD 12,193.85 in arbitration costs.

    Participants

    Iryna Kostiuk
    Andrii Kostiuk
    Institution
    Arbitrator
    Tetyana Slipachuk

    4 months and 27 days later · 149 days

  2. 28 January 2026Ukraine

    28 January 2026Ukraine

    Ruling of the Kyiv Court of Appeal consolidating applications in case No. 824/136/25 dated 28 January 2026

    Kyiv Court of Appeal

    Case no.
    824/136/25
    Decision summary
    The court consolidated OSOBA_1's application to set aside the arbitral decision with OSOBA_2's application for recognition and permission to enforce the same decision.

    3 months and 27 days later · 117 days

  3. 25 May 2026Ukraine

    25 May 2026Ukraine

    Ruling of the Kyiv Court of Appeal in case No. 824/136/25 dated 25 May 2026

    Kyiv Court of Appeal

    Case no.
    824/136/25
    Decision summary
    The court dismissed OSOBA_1's application to set aside the 1 September 2025 arbitral decision, granted OSOBA_2's application for recognition and permission to enforce it in Ukraine, issued a writ of execution, and awarded court fees.

    1 month and 13 days later · 44 days

  4. 8 July 2026Ukraine

    8 July 2026Ukraine

    Ruling of the Supreme Court opening the appeal in case No. 824/136/25 dated 8 July 2026

    Supreme Court

    Case no.
    824/136/25
    Decision summary
    The Supreme Court opened the appeal against the Kyiv Court of Appeal's 25 May 2026 ruling and requested the case materials.

    29 days later · 29 days

  5. 6 August 2026Ukraine

    6 August 2026Ukraine

    Ruling of the Supreme Court completing preparation in case No. 824/136/25 dated 6 August 2026

    Supreme Court

    Case no.
    824/136/25
    Decision summary
    The Supreme Court completed the preparatory steps and scheduled the appeal for an open hearing on 17 September 2026.

    1 month and 2 days later · 33 days

  6. 8 September 2026Ukraine

    8 September 2026Ukraine

    Ruling of the Supreme Court in case No. 824/136/25, proceeding No. 61-8471av26, dated 8 September 2026

    Supreme Court, Civil Cassation Court

    Case no.
    824/136/25
    Decision summary
    The Supreme Court granted OSOBA_1's counsel permission to participate in the scheduled and subsequent hearings by videoconference using their own technical means.

    Participants

    OSOBA_1
    Representative
    Koziryieva A. K. (For: OSOBA_1)
    Representative
    Vasylieva D. V. (For: OSOBA_1)
    Representative
    Perepelynska Olena Serhiivna (For: OSOBA_1)
    OSOBA_2
    Supreme Court, Civil Cassation Court
    Judge
    Serdiuk V. V.

    Authorities cited

    2
    • Civil Procedure Code of Ukraine
      statute
    • Regulation on the Procedure for Functioning of Certain Subsystems (Modules) of the Unified Judicial Information and Telecommunication System (Decision No. 1845/0/15-21 of the High Council of Justice of Ukraine, 17 August 2021)
      regulation

Matter record

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Iryna Kostiuk v Andrii Kostiuk (Ukraine) · Matter