Aptamer Group PLC - York, England-based company that develops custom affinity binders through its Optimer platform to enable new approaches in therapeutics, diagnostics and research applications - Chief Executive Officer Arron Tolley leaves his position and the board immediately. Tolley will remain with Aptamer for a period of garden leave. Chair Ian Gilham will become executive chair, and Chief Financial Officer Rob Quinn will take on the additional role of interim CEO. Aptamer will ‘immediately’ begin search for a full-time CEO.

Interim CEO Quinn says: ‘I recognise the immense power of Aptamer Group’s technology and the impact it can have across the life sciences industry, and I would like to thank Arron for everything he has contributed...I look forward to working closely with Ian, the wider management team and the board as we look to drive revenues, grow the business, and to deliver value for shareholders.’

Current stock price: 13.85 pence, up 6.5% in London on Wednesday

12-month change: down 86%

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