This story has been updated from May 3, with news of Cisco CEO John Chambers stepping down.
NEW YORK (TheStreet) -- Warren Buffett, the CEO of Berkshire Hathaway (BRK.A), is celebrating his 50th year running the giant conglomerate. This "fact" is being feted at the annual shareholder meeting this weekend. But did you know it is actually his 45th year as its chairman and chief executive?
Still, with the average tenure of a chief executive less than 10 years, that's nothing to sneeze at. Buffett, now 84, isn't the only CEO with a long tenure. These leaders are truly outliers. And there's even one that's been in position for longer than Buffett.
Find out which CEO has lasted even longer than the Oracle of Omaha. And when you're done, check out which CEOs are the most overpaid.
A note: On Monday, Cisco (CSCO) announced that its longtime Chairman and CEO John Chambers would step down from his daily management duties. Cisco named Chuck Robbins, its senior vice president of worldwide operations, effective July 26. Chambers is on our list of longest tenured CEOs.
11. Charlie Ergen
DISH Network (DISH)
CEO Tenure: 15 years
Charlie Ergen co-founded the predecessor to satellite and telecommunications company EchoStar Communications in 1980. Dish Network, created in 1996, was spun off in 2008. Ergen retired from daily management of Dish Network in 2011, but remained its chairman, where he was focused on long-term business development, including the creation of Sling TV, Dish Network's answer to streaming media service giant Netflix.
Charlie Ergen resumed the CEO position two months ago and currently serves as Dish's chairman, president and CEO as well as chairman of EchoStar.
10. Reed Hastings
CEO Tenure: 17 years
Reed Hastings co-founded Netflix in 1997 and officially became the monthly subscription streaming media service's CEO in 1998. Netflix currently has approximately 40 million customers in the U.S. and another 20 million internationally with members streaming more than 10 billion hours in content in the first quarter. The "House of Cards" creator is now available in more than 50 countries across the world.