Yahoo announced Tuesday it will host the first-ever live-stream of the annual shareholders meeting of Warren Buffett's Berkshire Hathaway.

The live-stream on April 30 from Omaha will appear exclusively on Yahoo Finance, across all devices. "We're just taking their broadcast," Yahoo Finance Editor-In-Chief Andy Serwer told CNBC's "Squawk Box." Berkshire already records and broadcasts the event to video screens at the convention center. "No money changes hands at all here."

Serwer described how this came about: "I got a call in December from Warren Buffett, asking me as head of Yahoo Finance, to do this." He added, "It was a one-sheet [contract], literally one page, 'You guys stream it, don't screw it up. We'll give you the wire. You plug it in. It goes to a satellite and you're done.' It was easy-peasy."

The event will be offered in English and translated into Mandarin for Chinese viewers, Serwer said, adding he's still working out the details on whether it will be a simultaneous translation or subtitles or a rebroadcast the next day.

"Over the past 50 years, we've seen a tremendous increase in the interest around our shareholders meeting," Buffett, chairman and CEO Berkshire Hathaway, said in a news release. "Partnering with Yahoo Finance provides us with the opportunity to reach more people than ever, in key financial centers around the world, from New York to China and beyond."

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Yahoo Finance said live coverage will kick off at 10 a.m. ET on April 30, with on-the-ground reporting from the CenturyLink convention center in Omaha, 30 minutes before the shareholders meeting begins.

Often called "The Woodstock of Capitalism," the Berkshire gathering draws tens of thousands of people to hear the Oracle of Omaha talk about the financial landscape and deliver updates on the company's business units.

The meeting is a big draw for the city of Omaha. But Serwer played down concerns that live-stream could discourage people to attend in person. "It's like a NFL game. If you want to go to it live you're going to go."

Yahoo Finance said an exclusive video-on-demand replay will be available on its platform for 30 days following the meeting. Yahoo said it will offer video and display advertising, as well as sponsorships alongside the live-stream.

Disclosure: CNBC has a content-sharing partnership with Yahoo's finance site.