$19 Billion and the Signature on the Welfare Office Door

The Moment, No. 1. The instant someone knew they'd made it, and what it looked like from the inside.

On 19 February 2014, three men left an office in Mountain View, California, that had no sign on the door, and drove a few blocks across the railway tracks to an empty white building.

One was Jim Goetz, a partner at the venture capital firm Sequoia. One was Brian Acton, a former Yahoo engineer. The third was Jan Koum, who was 37, and who had once stood in a queue at that building to collect food stamps. It had been the North County Social Services office. That morning it was where Koum chose to sign the agreement selling WhatsApp, the messaging app he had started five years earlier, to Facebook for $19 billion.

There is a photograph of it. Koum is leaning against the building's door, signing the paperwork on it with a pen.

Most moments of arrival are private and blurry. Someone looks at a bank balance, or a sales report, and something shifts. Koum's was unusual because he staged it, quietly, for nobody but himself and the two men with him. To understand why he picked that door, you have to go back to a village outside Kyiv.

A house with no hot water

Koum grew up in Ukraine, then part of the Soviet Union, the only child of a housewife and a construction manager who built hospitals and schools. The family home had no hot water. His parents rarely talked on the phone, in case the line was tapped.

When he was 16, he and his mother emigrated to Mountain View. Government assistance got them a small two-bedroom flat. His father was meant to follow and never did; he died in 1997. Koum's mother had packed their suitcases with pens and a stack of 20 Soviet-issued notebooks so they wouldn't have to pay for school supplies in America. She babysat. Koum swept the floor of a grocery store. When she was diagnosed with cancer, they lived on her disability allowance.

He taught himself computer networking from manuals he bought at a second-hand bookshop and then returned when he'd finished with them. He enrolled at San Jose State University and worked as a security tester at Ernst & Young, which in 1997 put him across a desk from Acton, Yahoo's 44th employee, who was there to have his company's systems inspected. They liked each other's bluntness. "Neither of us has an ability to bullshit," Koum told Forbes later.

Within months Koum was working at Yahoo too. When a server broke two weeks into the job, Yahoo's co-founder David Filo rang his mobile. Koum, who was in a lecture, said so. Filo told him, with some force, to get into the office. Koum dropped out. His mother died in 2000, three years after his father, and Acton was one of the people who made sure he wasn't alone.

The Facebook reject club

The pair spent nine years at Yahoo and left in September 2007, worn out by it. They took a year off, travelled around South America and played ultimate frisbee. Both applied for jobs at Facebook. Neither got one. In the summer of 2009 Acton posted on Twitter: "Facebook turned me down … looking forward to life's next adventure."

By then the next adventure had already started, though it didn't look like much. In January 2009 Koum bought an iPhone and realised that the App Store, then seven months old, was going to create a new industry. His idea was modest: a contacts list that showed a status next to each name, so you could see if a friend was on a call, at the gym, or nearly out of battery. He incorporated WhatsApp Inc. on his birthday, 24 February 2009, before a line of the app had been written.

It kept crashing. Few people downloaded it. After a game of frisbee a few months in, Koum admitted to Acton that he should probably give up and look for a job. "You'd be an idiot to quit now," Acton told him. "Give it a few more months."

The rescue came from Apple. In June 2009 it let apps send push notifications, and Koum made WhatsApp ping your friends whenever you changed your status. A group of Russian-speaking friends in San Jose started using the statuses to talk to each other. "At some point it sort of became instant messaging," one of them, Alex Fishman, said. Koum, watching the statuses change on a Mac Mini at home, realised he had built a messaging service by accident. When he added proper messaging, active users jumped to 250,000.

That October, Acton persuaded five former Yahoo colleagues to put in $250,000 of seed money and became a co-founder. The company sublet desks in a converted warehouse on Evelyn Avenue, where staff wore blankets to keep warm. There was no sign. Job candidates were told to find the Evernote building, go round the back, find an unmarked door and knock.

No sign, no ads, no noise

What's striking, looking back, is how little noise WhatsApp made while it grew. By early 2011 it was in the top 20 apps in America's App Store, and Koum wasn't telling anyone. Asked by staff why not, he said: "Marketing and press kicks up dust. It gets in your eye, and then you're not focusing on the product."

He and Acton turned away venture capitalists for a long time. Sequoia's Goetz spent eight months trying to get a meeting and eventually invested $8 million after promising not to push advertising on them. Both founders had spent years helping sell advertising at Yahoo and had come to loathe it. In 2012 they wrote a blog post explaining why WhatsApp didn't sell ads, opening with a line from Fight Club.

Early in 2013, with about 200 million active users and 50 staff, they raised another $50 million from Sequoia, valuing the company at $1.5 billion. Acton took a screenshot of the company's bank balance and sent it to Goetz. It read $8.257 million: they still hadn't spent the money they'd raised years earlier.

The door

When Facebook announced the deal on 19 February 2014, the numbers were hard to take in. $4 billion in cash and $12 billion in Facebook shares, plus $3 billion in restricted stock for WhatsApp's founders and staff, vesting over four years. Facebook said more than 450 million people used WhatsApp every month, and that it was adding more than a million new registered users a day.

Forbes reported that WhatsApp had brought in about $20 million in revenue the previous year. It estimated that Koum owned around 45% of the company, making him suddenly worth about $6.8 billion after tax.

Those are the numbers that went round the world. The image that stuck was the door.

It's tempting to read it as a victory lap, but it doesn't really fit the man. Koum hadn't put a sign on his own office. Asked by Forbes, just before the deal, whether he would finally put one up on the new headquarters, he said: "I can't see a reason for there being a sign. It's an ego boost. We all know where we work."

So the door was something else. Not an announcement, but a way of measuring the distance. A boy who arrived with a suitcase full of free pens, whose mother babysat and whose family had needed government help to find a home, came back to the place where he had queued and signed for a fortune on its front door. Nobody else needed to understand it. He did.

What came after

The story didn't end neatly. Acton left Facebook in 2017 and Koum in 2018. Both had resisted advertising in WhatsApp for years. In June 2025, Meta, as Facebook's parent company is now called, began showing ads in WhatsApp's Updates tab.

The photograph from that February morning outlasted all of it: Koum, pen in hand, signing for $19 billion against the door of the building where he had once queued for food stamps.

Your moment. Was there an instant you knew something you'd built was going to work? We'd like to hear it.

Sources

• Forbes, Parmy Olson, "Exclusive: The Rags-To-Riches Tale Of How Jan Koum Built WhatsApp Into Facebook's New $19 Billion Baby", 19 February 2014: forbes.com
• The Guardian, "Facebook turned down WhatsApp co-founder Brian Acton for job in 2009", 20 February 2014: theguardian.com
• Facebook (Meta) newsroom, "Facebook to Acquire WhatsApp", 19 February 2014: about.fb.com
• WhatsApp blog, "Why we don't sell ads", 2012: blog.whatsapp.com
• Fortune, "WhatsApp introduces ads, fulfilling a plan its cofounders hated so much they left over it", 16 June 2025: fortune.com

Red Ink Black Ink is independent and has no connection with WhatsApp, Meta or anyone named in this story. Photographs are used under the licences shown.