(Updates with the CEO retirement starting in the first paragraph and company comment on guidance in the sixth and seventh paragraphs.)

NXP Semiconductors (NXPI) reported Q1 non-GAAP earnings late Monday of $2.64 per diluted share, down from $3.24 a year earlier, and the company announced the retirement of Kurt Sievers, the chief executive officer.

Analysts polled by FactSet expected $2.61.

Revenue for the quarter ended March 30 was $2.84 billion, down from $3.13 billion a year earlier, the company said in a statement.

Analysts surveyed by FactSet expected $2.83 billion.

The company expects Q2 non-GAAP EPS of $2.46 to $2.86 on revenue of $2.8 billion to $3 billion. Analysts expect non-GAAP EPS of $2.66 on revenue of $2.86 billion.

The guidance "consists of predictions only and is subject to a wide range of known and unknown risks and uncertainties, many of which are beyond NXP's control," according to the statement.

"We are operating in a very uncertain environment influenced by tariffs with volatile direct and indirect effects," the company said.

Sievers, also the company president, informed the board of his intention to retire at the end of this year, the company said. The board unanimously approved the appointment of Rafael Sotomayor as president, effective April 28, and he will become CEO on Oct. 28 following a transition.

Shares of NXP fell 7.4% in after-hours activity.