ServiceTitan, a Glendale tech company that makes software for plumbers, painters and other tradespeople, has filed for an initial public offering but has not disclosed how much money it plans to raise ...

Two decades later, that idea has morphed into a Glendale company called ServiceTitan, which last year served some 8,000 plumbing, HVAC, janitorial and other firms with a soup-to-nuts software ...