Antonina Stępniewska
Associate
Capital MarketsShe deals with capital market and corporate law matters.
Languages:
BIO
Antonina participates in projects related to the acquisition of debt and equity financing in connection with the issuance of financial instruments in private and public transactions. She also participates in projects related to the admission and introduction of financial instruments to trading on a regulated market and in an alternative trading system.
She assists in the representation of clients before the National Depository for Securities (KDPW S.A.) and the Warsaw Stock Exchange (Giełda Papierów Wartościowych w Warszawie S.A.). He participates in due diligence processes for capital transactions. She also provides ongoing services to public companies in the field of corporate law and compliance with disclosure obligations.
Prior to joining Gessel in 2023, she gained experience in Polish law firms and companies, where she dealt with issues in the field of day-to-day corporate services for commercial law companies.
During her studies, she actively participated in the activities of the Academic Circle of Capital Markets Law, of which she was president in the academic year 2021/2022. As part of it, she co-organised nationwide projects such as Rynkologia, Corporate Law Academy or the Capital Markets Law Tournament, as well as the Private Equity Academy in cooperation with the SGH Investor Club. During her studies, she provided free legal assistance within the Law Clinic at the University of Warsaw in the civil law section.
Experience
Selected projects
- Advised Creotech Quantum S.A., a WSE-listed company, on a public offering of newly issued Series D shares conducted through an accelerated bookbuilding (ABB) process, with a value of PLN 81.2 million
- Advised Creotech Instruments on the spin-off of its quantum business and the WSE listing of Creotech Quantum, with an equity value of approximately PLN 535.6 million
- Advised DataWalk on a PLN 116.25 million non-prospectus public offering of newly issued shares conducted by way of an accelerated bookbuilding (ABB)
- Advised Cognor Holding on a PLN 300 million secondary public offering conducted through an accelerated bookbuilding (ABB) process, comprising the sale of existing shares by PS Holdco and newly issued shares
- Advised Bioceltix on two equity offerings with a total value of PLN 116 million, comprising a shareholder-led secondary public offering conducted through an accelerated bookbuilding (ABB) process and the issuance of two tranches of new shares funded with proceeds from the ABB
- Advised cyber_Folks on a non-prospectus public offering of series E shares issued through an accelerated bookbuilding (ABB) process, with a value exceeding PLN 200 million
- Advised Dino Polska on a 1:10 share split and the admission of the shares to trading on the Warsaw Stock Exchange
- Advised DataWalk on a non-prospectus public offering of newly issued Series S shares with a total value of approximately PLN 58 million
- Advised Olivia Fin on a bond issue of approximately PLN 40 million under its bond issuance programme and the admission of the bonds to trading on the Catalyst market
- Advised Lithuanian shareholders on the sale of approximately 12.08% of shares in Vercom S.A. through an accelerated bookbuilding (ABB) process, with a value of nearly PLN 300 million
- Advised Creotech Instruments on a PLN 76 million public offering of newly issued shares
- Advised cyber_Folks S.A. on the acquisition of a 49.9% stake in listed company Shoper S.A., a SaaS e-commerce platform provider, from private equity fund Value4Capital and other shareholders for approximately PLN 547 million
News
& Insights
14.07.2026
GESSEL advised Creotech Instruments on a PLN 481 million public offering
GESSEL advised Creotech Instruments S.A., a Warsaw Stock Exchange listed space technology company, in connection with its public offering of 650,000 Series M shares cond...
19.06.2026
GESSEL advised Resi Capital on a PLN 165 million bond offering
GESSEL advised Resi Capital S.A., a residential developer focused on the premium residential segment, on a public offering of Series E secured bonds with an aggregate no...
08.06.2026
GESSEL advised cyber_Folks on the sale of Vercom shares worth approximately PLN 520 million
GESSEL advised cyber_Folks S.A., a leading provider of e-commerce technologies in Central and Eastern Europe and a company listed on the Warsaw Stock Exchange, on the sa...
18.05.2026
GESSEL advised Creotech Quantum on its public offering of Series D shares
GESSEL advised Creotech Quantum S.A., a company listed on the regulated market of the Warsaw Stock Exchange (WSE), on its public offering of 350,000 Series D shares cond...
Education and achievements
- Studying law at the Faculty of Law and Administration at the University of Warsaw (2023)
- Bachelor’s degree in Global Business, Finance and Management at the Warsaw School of Economics (2022)
- Legal studies at Università degli Studi di Parma as part of the Erasmus+ programme (2022-2023)
- Master’s degree in Finance and Accounting at the Warsaw School of Economics (from 2023)