The company, whose customers include Nvidia Corp NVDA.O, Siemens AG SIEGn.DE and Goldman Sachs Group Inc GS.N, sold 8.42 million shares in its IPO. A selling stockholder affiliated with co-founder and Chief Executive Officer Sytse Sijbrandij sold 1.98 million shares. But the IPO market has slowed in recent weeks as concerns over inflation and choppy trading forced some companies to delay their listing plans.