In just four years Mac Miller has grown from mixtape whiz kid to full-fledged rap star, all while signed to independent label Rostrum Records. They had a successful run, but MTV News has learned that the "Donald Trump" MC and Rostrum have officially parted ways after the contract they originally signed has expired.

"Rostrum is my family. That is forever," Miller said in an exclusive joint statement issued to MTV News on Tuesday (January 14). "No matter what, we will always work together. We moved mountains and I can only see them continuing that tradition. I am grateful for everything I learned and am always here for whatever."

"Mac is an incredible artist and has a bright career ahead of him," Rostrum Records Founder and President Benjy Grinberg said. "We are proud of the historic run that we had together and we will continue to support him in any way that is needed. We wish him nothing but the best in the future."

Miller first signed to the label and management company in 2010 when he released his breakout mixtape K.I.D.S. (Kickin' Incredibly Dope Sh--). Together, Mac and Rostrum went on to establish the rapper as a digital force and a spirited performer. Mac added even more star power to a label that also counts Wiz Khalifa, Leon Thomas and Vali on its roster.

When Mac released his debut album [article id="1674467"]Blue Slide Park[/article] a year later, they made major headlines by becoming the first independent debut to top the Billboard 200 since Tha Dogg Pound accomplished the feat in 1995 -- and even then Tha Dogg Pound had the major backing of Suge Knight and Death Row Records.

Mac's sophomore LP [article id="1709237"]Watching Movies With the Sound Off[/article]was released this past June, peaking at #3. (Kanye West's Yeezus and J. Cole's Born Sinner debuted on the same day as Watching Movies.) In total, Mac has sold 5.4 million singles and more than 750,000 albums with Rostrum and found even more success with his MTV show, "Mac Miller & The Most Dope Family."