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The transaction was effected through a scheme of reconstruction and the voluntary winding-up of Arix Bioscience under section 110 of the Insolvency Act 1986, which meant that it was not subject to the Takeover Code.


RTW Biotech is a UK premium listed life sciences investment and innovation firm. Headquartered in New York with offices in London and Shanghai, it invests across the full lifecycle of companies including company creation, early-stage venture capital, crossover, and public company investments. Arix Bioscience is a global venture capital company focused on investing in and building breakthrough biotech companies around cutting-edge advances in life sciences.

Pursuant to the transaction, RTW Biotech acquired the 25% stake of Acacia Research Corporation, a company which acquires public and private businesses with a primary focus across the mature technology, industrials, healthcare and business services industries, in Arix Bioscience for cash before proceeding to acquire the assets of Arix Bioscience in return for share consideration issued to the remaining Arix Bioscience shareholders.

The Herbert Smith Freehills team was led by partners Tim West, Mike Flockhart and Heidi Gallagher, supported by partners Aurell Taussig, Mark Ife, Kelesi Blundell and Nick Wright, senior associates Graham Crocker and Ben Tooms, and associates Katerina Jovanovska, Anna Le Poidevin and Warwick Carless. 

Partner Tim West commented: "We are delighted to have advised long-term client RTW Biotech throughout this journey, from the signing to the completion of the all-share acquisition of Arix Bioscience. The transaction illustrates our expertise advising on complex M&A deals in the life-sciences industry and our unrivalled ability to bring to bear top-tier listed investment company and public M&A practices."

Following the transaction, RTW Biotech announced that the unaudited, indicative and estimated pro forma net asset value attributable to ordinary shareholders of the Company (the Indicative and Estimated NAV) as at the closing of the Arix transaction on 12 February 2024 was US$644.2 million, equivalent to US$1.88 per ordinary share.

Key contacts

Tim West photo

Tim West

Partner, London

Tim West
Mike Flockhart photo

Mike Flockhart

Managing Partner, Corporate, London

Mike Flockhart
Heidi Gallagher photo

Heidi Gallagher

Partner, London

Heidi Gallagher
Aurell Taussig photo

Aurell Taussig

Partner, London

Aurell Taussig
Mark Ife photo

Mark Ife

Partner, London

Mark Ife
Kelesi Blundell photo

Kelesi Blundell

Partner, London

Kelesi Blundell
Nick Wright photo

Nick Wright

Partner, London

Nick Wright

Media contact

For further information on this article please contact

Kath Walkling

Communications Manager

London

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London Mergers and Acquisitions Tim West Mike Flockhart Heidi Gallagher Aurell Taussig Mark Ife Kelesi Blundell Nick Wright