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Dr Hans Diekmann



Diekmann Hans
Dr Hans Diekmann



Hans joined Allen & Overy LLP in May 2013 as a corporate partner in the Düsseldorf office. He primarily advises on corporate and capital markets law as well as on M&A transactions including public takeovers. German DAX and MDAX companies, financial institutions and large listed companies count among his regular client base.

In addition to his M&A work Hans advises his clients inter alia on annual general meetings, initial public offerings, corporate reorganisations as well as on general corporate law advice and on financing issues. He also regularly advises executives and board members on matters relating to corporate compliance.

Hans regularly publishes on corporate and stock corporation law issues. In his former career Hans worked for more than seven years in the central legal department of Deutsche Bank in Frankfurt as well as a partner in another international law firm. Independent German and international legal directories frequently rank him among the leading lawyers in the areas of corporate and capital markets law.

Experience highlights

News & insights

Climate change mitigation; climate change adaptation; net zero; decarbonisation; COP26; CBD COP15

Blog Post: 01 DECEMBER 2021

Spotlight on COP26: Asia Pacific countries have come a long way on their climate commitments

Critics may be disappointed by the actions of Asia Pacific governments at COP26, but there has been major progress over the past two years, write Scott Neilson and Goran Galic.

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The London skyline full of skyscrapers against a dull sky

Publications: 30 NOVEMBER 2021

Podcast: UK and EU prospectus and listing regulation: Where next?

In this podcast, Amanda Thomas, partner and Jennifer Cresswell, counsel in our International Capital Markets practice, share a short round-up of UK and EU prospectus and listing regulation…

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Collection of lights

Publications: 30 NOVEMBER 2021

The sun never sets on English law governed debt: reviewing the Re Prosafe SE decision

The recent decision in Re Prosafe SE pits the principle of freedom of contract against the increasingly popular modified universalism in the cross-border restructuring and insolvency space.

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office building

News: 04 NOVEMBER 2021

Allen & Overy advises alstria on public takeover by Brookfield

alstria and Brookfield conclude comprehensive investment agreement Brookfield to launch a voluntary public takeover offer at a price of 19.50 euros per share in cash

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Allen & Overy LLP
Dreischeibenhaus 1
40211 Duesseldorf

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Admitted as German Rechtsanwalt, 1993


Second German Law Degree, Düsseldorf, 1992

Dr iur, University of Münster/Westphalia, Germany, 1990

First German Law Degree, Hamm/Westphalia, 1988

Published work

  • Diekmann, “Kommentierung des Geschäftsführers, des Aufsichtsrats und sonstiger Organe”, in: Münchener Handbuch des Gesellschaftsrechts, Band 3: Gesellschaft mit beschränkter Haftung, 5. Aufl. 2018, C.H.BECK
  • Diekmann, “Kommentierung der §§ 60 – 77 zur Verschmelzung der Beteiligung von Aktiengesellschaften sowie der §§ 141 – 146 zur Spaltung und der Beteiligung von Aktiengesellschaften und Kommanditgesellschaften auf Aktien”, in: Semler/Stengel, Umwandlungsgesetz, 4. Aufl. 2017, C.H.BECK
  • Diekmann, “Achter Abschnitt Grenzüberschreitende Verschmelzungen”, in: Happ/Ihrig, Umwandlungsrecht, 2. Aufl. (erscheint demnächst), Heymanns Verlag GmbH
  • Diekmann, “SE-VO Art. 4 – 8 und SE-VO Art. 15, 16”, in: Habersack/Drinhausen, SE-Recht, 2. Aufl. 2016, C.H.BECK
  • Diekmann, “Kommentierung zu §§ 14, 27 und 28”, in: Paschos/Fleischer, Handbuch Übernahmerecht nach dem WpÜG, 1. Aufl. 2017, C.H.BECK
  • Diekmann, “Übernahmevertrag bei Anleiheemissionen”, in: Habersack/Mülbert/Schlitt (Hrsg.), Unternehmensfinanzierung am Kapitalmarkt, 4. Aufl. 2019, Verlag Dr. Otto Schmidt