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Thea-Killengreen
Associate Partner

Thea Killengreen

Languages
  • Norwegian
  • English

Thea Killengreen is part of the firm’s Corporate/M&A department in Oslo. She holds a master's degree in law from the University of Bergen and an LL.M. from King's College London.

Thea Killengreen primarily works with transactions/M&A as well as general corporate law and capital markets law. Thea assists both financial and industrial clients in all stages of the transaction process, from initial negotiations to signing and completion. She has worked with a wide range of clients and has assisted national and international companies on both the buy- and sell-side in complex M&A transactions.  Assistance in connection with corporate transactions can relate to everything from the choice of organisational and transaction form, assistance with due diligence reviews, to advice related to the conclusion of agreements and implementation of settlements. 

Thea also assists both Norwegian and international companies and organisers in connection with processes on the Oslo Stock Exchange. Thea has assisted several companies and investment banks in equity capital market transactions, including private placements and IPOs in various business sectors.

Relevant experience

  • 2026 - Associate Partner, CMS Kluge Advokatfirma AS
  • 2024 - 2025 Managing Associate, CMS Kluge Advokatfirma AS
  • 2020 - 2023 Senior Associate, CMS Kluge Advokatfirma AS (prev. Kluge Advokatfirma AS)
  • 2018 - 2020 Associate, Kluge Advokatfirma AS
  • 2017 Trainee, Kluge Advokatfirma AS
  • 2016 Trainee, Advokatfirmaet Thommessen AS
  • 2015 - 2016 Group leader for the second academic year, Faculty of Law, University of Bergen

Awards & Rankings

  • Recommended lawyer, Legal 500, Banking and finance
  • Recommended lawyer, Legal 500, Capital market
  • Recommended lawyer, Legal 500 Insolvency and corporate recovery
EMEA_Recommended_lawyer_2025.jpg
  

 

Tuva Svare and Thea Killengree were responsive, solutions-oriented and efficient. We were very pleased to work with them. Tuva also had a lot of dealing with the finance ministry regarding our case and was quick to check up on things with them.
Legal 500, Banking and finance, 2025

Education

  • 2013 - 2018 Master of Laws, University of Bergen
  • 2017 - 2018 International Financial Law LLM, King’s College London
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