** Shares in VAT Group VACN.S fall 3% in pre-market indications after the semiconductor supplier reported preliminary Q1 sales below its guidance

** VAT Group's Q1 sales came in at 215 million Swiss francs ($269.05 million), compared to the guidance range of 240 million and 260 million Swiss francs, the company provided

** "Preliminary Q1 sales were impacted by partial disruptions in VAT's supply chain related to the Middle East conflict and adjustments in customer specifications as well as late delivery of certain components and materials," Vontobel says

** The stock, which has gained 22% YTD, is seen at the bottom of Switzerland's mid-cap index .SMIM

($1 = 0.7991 Swiss francs)