RUBRIC CAPITAL MANAGEMENT LP SENT A LETTER TO THE BOARD OF DIRECTORS OF MEREO BIOPHARMA GROUP PLC

The Board of Directors

Mereo BioPharma Group PLC

1 Cavendish place

London, W1G 0QF

Attention: Michael Wyzga, Chairman

Dear Members of the Board of Directors:

I am writing you on behalf of Rubric Capital Management LP (together, “Rubric”, “we”, or “our”), whose managed funds and accounts collectively own approximately 13.1% of the common stock of Mereo BioPhar…