First of all, Birkshire Hathaway shares are way, way too expensive.
BRK.A is reported trading at $292,600.00 per share today May 5, 2018. Never split. Never paid a dividend.
Meanwhile, the "Baby Birks," BRK.B are reportedly trading at $195.64 per share.
https://www.investopedia.com/ask/answers/021615/what-difference-between-berkshire-hathaways-class-and-class-b-shares.asp
BRK.B shares were first issued in 1996, entitled to 1/30 the dividend of BRK.A, should the company ever in fact pay a dividend.
The Class B shares were split 50:1 in 2010, sending the dividend entitle