'This is probably the last time you'll ever talk to me': WhatsApp's cofounder broke his silence about his icy relationship with Mark Zuckerberg

  • Brian Acton, a cofounder of WhatsApp, has broken his silence about leaving Facebook three years after his company was acquired for $US19 billion.
  • In an explosive interview with Forbes, Acton outlined tensions with Facebook CEO Mark Zuckerberg and COO Sheryl Sandberg about introducing ads into WhatsApp.
  • Acton recalled one meeting where Zuckerberg apparently told him, “This is probably the last time you’ll ever talk to me.”
  • He said he never became close to the Facebook chief, despite leading the company’s most expensive acquisition.

WhatsApp cofounder Brian Acton has broken his silence about why he left Facebook last year in an explosive interview with Forbes – and it is a gnarly Silicon Valley fight for the ages.

Acton left Facebook in 2017, three years after the company acquired WhatsApp for $US19 billion. His cofounder, Jan Koum, left in 2018 and is, according to Forbes, uncontactable while sailing in the Mediterranean.

Acton provided the first official confirmation that things were extremely icy between the WhatsApp team Facebook CEO Mark Zuckerberg and COO Sheryl Sandberg.

He recounted one meeting where he was dragged before Zuckerberg and Facebook’s lawyers about how Facebook could make money from WhatsApp. The messaging app’s founders have been famously reluctant to introduce ads into the service, but that’s also Facebook’s primary way of making money.

Specifically, they wrangled over whether Facebook’s insistence on introducing ads into WhatsApp meant that Acton could exit and take his full allocation of stock.

The $US19 billion acquisition price comprised $US4 billion in cash, and $US12 billion in Facebook shares. If Facebook ever introduced ads against the founders’ will, they could take all their allocated stock before the agreed four-year period.

Facebook’s lawyers didn’t think exploring monetisation broke the agreement. According to Acton, Zuckerberg apparently told him, “This is probably the last time you’ll ever talk to me.”

Despite three years at Facebook and heading up its most expensive acquisition to date, Acton said he never became close to Zuckerberg. “I couldn’t tell you much about the guy,” he said.

This somewhat stacks up with reports about Zuckerberg’s personality – the kinder of them suggest he’s close only to a small group of friends, while the less kind portray him as emotionless.

Acton’s explosive account comes just as another pair of founders quit Facebook: Instagram founder Kevin Systrom and Mike Brier, again with reported tensions with Zuckerberg.

Business Insider has asked Facebook to comment.

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