Who was Apple co-founder whose job was to act as the "adult in the room" and left the iPhone maker after 12 days

Apple is widely known to have been founded by Steve Jobs and Steve Wozniak. But very few know that there was also a third co-founder who played a key role in its early days. That’s not the only lesser known fact. Ronald Wayne, who was brought in to act as the “adult in the room,” exited the company shortly (12 days to be precise) after its formation in April 1976, giving up a 10% stake that would be worth billions today. Wayne, then 41, was significantly older than Jobs (21) and Wozniak (25). His role was to provide business experience and stability. He also wrote Apple’s first partnership agreement and designed its original logo.Apple was initially set up as a partnership, not a corporation. This meant all three founders were personally responsible for any debts. Wayne, the only one with personal assets, faced the highest financial risk if the business failed.Having experienced a previous business failure, Wayne chose to step away early. He sold his 10% stake for $800 to cover his initial work. A year later, he received an additional $1,770 when Apple was incorporated, taking his total payout to $2,570.Had Wayne stayed, his 10% stake in Apple would be worth an estimated $377 billion today, making it one of the most expensive early exits in tech history.He also missed a second financial opportunity. In the 1990s, Wayne sold his original Apple partnership document for $500. The same document was later auctioned for over $1.6 million and eventually sold again for $2.5 million.Despite his short time at the company, Wayne remains a key figure in Apple’s origin story — as the co-founder who chose security over risk at a moment that would later define the tech industry.