Icahn Loses Appeal of Order in Ongoing Delaware Illumina Suit

Delaware’s highest court refused to hear billionaire investor Carl Icahn’s appeal of an order to remove confidential information from his lawsuit pending against the DNA-sequencing company Illumina Inc.

Icahn sued Illumina last October over its failed $7 billion acquisition of Grail Inc. Information about the transaction that Icahn improperly received from an Illumina director—whom Icahn got named to the board in a proxy fight—had to be removed from the lawsuit, a Court of Chancery judge ruled in January.

“Exceptional circumstances that would merit interlocutory review” of the Chancery Court’s order “do not exist in this case, and the ...