(Reuters) -Activist investor Keith Meister will join the board of gene-sequencing maker Illumina ( ILMN ), and current board member Scott Gottlieb will become chairman, the Wall Street Journal reported on Tuesday, citing people familiar with the matter.

The changes are expected to be announced on Tuesday and will take effect on Friday, according to the report.

Illumina ( ILMN ) and Keith Meister's hedge fund Corvex Management did not immediately respond to Reuters' requests for comment.

Corvex Management owns about 1.7 million shares of Illumina ( ILMN ), according to a regulatory filing.

Shares of the company rose 2.2% in premarket trading, following the report.