Mark Gurman is one of the best Apple reporters in the world. He's been breaking news on the notoriously secretive tech giant for the 9to5Mac blog since he was just 15 years old.

But Gurman, now 22, is moving on from 9to5Mac. His last day is Tuesday, Tech Insider has learned.

9to5Mac founder Seth Weintraub told Tech Insider the move from 9to5Mac was "amicable" and "years in the works."

Later on Thursday, Recode reported that Gurman would be joining Bloomberg in its San Francisco office. According to a memo obtained by Recode, Gurman "will contribute to Bloomberg TV and Bloomberg's growing stable of podcasts, and his work will be central to the launch of Bloomberg's new digital technology brand."

If you're unfamiliar with his work, Mark Gurman has broken some of the biggest, most important news around Apple products over the last seven years. His first official scoop was discovering a website in 2009 called "iSlate.com," which helped to confirm rumors of Apple's tablet project. He had the scoop on Siri several weeks before Apple introduced the personal assistant at its iPhone 4S unveiling in 2011. He also helped break news about iOS 7, the first Macs with Retina displays, and last year's 12-inch MacBook. His scoops over the years solidified 9to5Mac, a relatively small Apple blog, as a must-read publication among techies and Apple fans.

Though Gurman will no longer work at 9to5Mac, he did say this transition is "bittersweet" for him, as 9to5Mac will always be a big part of his life. He said he's confident the 9to5Mac brand will continue thriving thanks to the environment Weintraub created, which encourages reporters to go out and get big scoops. Gurman pointed to 9to5Mac's sister site 9to5Google as an example, as that site has gotten a few big scoops about Google recently; same goes for Electrek, Weintraub's relatively new website dedicated to electric cars.

Gurman said the move was about exposure and pursuing new opportunities. Weintraub added that his 9to5 brand, while big and growing, doesn't "offer the wider breadth of industry coverage and TV opportunities that Mark deserves."