Sam Altman should take Niklas Östberg’s number—what the Delivery Hero founder doesn’t know about going public and shareholders isn’t worth knowing

Niklas Östberg is a rare beast. A founder-CEO who took his company public and survived a shareholder backlash. Sam Altman might like to take his number as he considers floating OpenAI. Reporting on your results every three months is not for the faint-hearted. 

Östberg is the entrepreneur behind Delivery Hero, the €7.65bn global food delivery business which IPO’d in 2017. It was the largest float of the year on the German stock exchange, and unlike other, rockier food delivery debuts (Deliveroo...