Larry Page and Sergey Brin incorporate Google and set up a workspace in Susan Wojcicki's garage in Menlo Park, California.
Co-founders Page and Brin hire Wojcicki, employee No. 16.
Marissa Mayer joins Google straight out of Stanford grad school. She is employee No. 20 and Google's first female engineer.
New CEO Eric Schmidt recruits Sheryl Sandberg to move to Google from Washington, D.C., where she was chief of staff to U.S. Treasury Secretary Larry Summers.
Megan Smith joins Google after heading PlanetOut, the first venture-backed LGBT online community site.
Google goes public at $85 a share, raising $1.9 billion.
Google buys YouTube for $1.6 billion—after ad boss Wojcicki advocates for the deal, as YouTube is eclipsing Google Video.
Google announces the acquisition of online ad giant DoubleClick for $3.1 billion.
Sandberg, Google's VP of online sales and operations, quits to become COO of Facebook and No. 2 to CEO Mark Zuckerberg.
Mayer, VP of Google Maps and location services, leads Google's acquisition of restaurant finder Zagat for $151 million.
Google acquires Motorola Mobility for $12.5 billion to fortify Android, its mobile operating system.
Mayer leaves Google to become CEO of Yahoo. (She discloses to Fortune exclusively: "I'm pregnant.")
Google acquires Nest Labs, a maker of home-automation products, for $3.2 billion.
Megan Smith, VP of Google X, answers a call from President Obama and becomes the first U.S. chief technology officer.
Ruth Porat, Morgan Stanley's former finance chief, moves to Google as its new CFO.
Porat leads her first earnings call; Google gains $65 billion in market value in one day.
Google announces a new corporate structure and introduces Alphabet, its new holding company.