-- (Updates with the stock move in the headline and the last paragraph.)
Tenaris (TS) reported Q1 earnings late Wednesday of $1.07 per American depository share, up from $0.94 a year earlier.
Analysts polled by FactSet expected $0.89.
Net sales for the quarter ended March 31 rose to $3.10 billion from $2.92 billion a year earlier.
Analysts surveyed by FactSet expected $2.99 billion.
For Q2, the company said it expects sales will be affected by lower shipments in the Middle East.
Tenaris shares were down 6.1% in premarket activity Thursday.