The Wall Street Journal reported that Keith Meister, an activist investor, will be joining Illumina's board, while the current board member Scott Gottlieb is set to become chairman, as stated by sources familiar with the situation. The announcement of these changes is expected to be made on Tuesday with their implementation scheduled for Friday. Reuters' attempts to obtain comments from Illumina and Keith Meister's hedge fund, Corvex Management, were unsuccessful. Corvex Management's ownership of approximately 1.7 million Illumina shares was disclosed in a regulatory filing. The company's stock saw a 2.2% increase in premarket trading subsequent to the news. This information was provided by Bhanvi Satija in Bengaluru and edited by Shilpi Majumdar.