Aug 16 (Reuters) - ARCA Biopharma Inc :
* ARCA BIOPHARMA DECLARES SPECIAL DIVIDEND IN CONNECTION WITH THE PROPOSED MERGER WITH ORUKA THERAPEUTICS
* ARCA BIOPHARMA INC - SPECIAL DIVIDEND ESTIMATED TO BE $1.59 PER SHARE
* ARCA BIOPHARMA INC - DECLARES SPECIAL DIVIDEND OF $1.59 PER SHARE
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