- Antibiotics developer Motif Bio said Richard C. E. Morgan had resigned with immediate effect to focus on other business commitments.

Current director Bruce Williams has been appointed interim chairman while the company searched for a permanent replacement.

Morgan had agreed to remain available to the company in the coming months on an as needed basis to ensure a smooth transition.

'On behalf of Motif Bio and the Board of Directors, I thank Richard for his mentorship, dedicated service and support over many years since the foundation of Motif Bio and wish him the best in his future endeavours,' said chief executive Graham Lumsden.

'We are delighted that Bruce has agreed to step into the interim chairman role.'

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