 EXTON, Pa.--BUSINESS WIRE--Bentley Systems, Incorporated Nasdaq: BSY Bentley, the infrastructure engineering software company, today announced the launch of the public offering of 10,000,000 shares of its Class B common stock, consisting of 8,103,965 shares to be issued and sold by Bentley and 1,896,035 shares to be sold by existing stockholders of Bentley. Bentley expects to grant the underwriters in the offering a 30-day option to purchase from Bentley up to an additional 1,500,000 sh 