The Geneva-based company said fourth-quarter net revenues rose by 5 percent from the previous quarter to $2.65 billion, below STMicro's targets.

The gross margin for the period stood at 40 percent, slightly above targets. The company, which notably provides chips and sensors to the smartphone and auto industries, expects to invest between $1.2-$1.3 billion in capital expenditure in 2019.

(Reporting by Mathieu Rosemain and Gwenaelle Barzic; Editing by Sudip Kar-Gupta)