Pedestrians walk past the IBM building in New York.
Scott Mlyn | CNBC
Check out the companies making headlines after the bell on Monday:
IBM — Shares of the computer hardware company ticked up 2.9% after IBM reported better-than-expected results for the first quarter. IBM posted earnings per share of $1.77 on revenue of $17.73 billion. Analysts polled by Refinitiv expected earnings per share of $1.63 on revenue of $17.35 billion.
United Airlines — United Airlines shares fell 1.8% after the company reported worse-than-expected first-quarter results. United lost $7.50 per share on revenue of $3.22 billion. Analysts surveyed by Refinitiv expected a loss per share of $7.08 on revenue of…