A detailed history of William Mack & Associates, Inc. transactions in Berkshire Hathaway Inc Class B stock. As of the latest transaction made, William Mack & Associates, Inc. holds 948 shares of BRK-B stock, worth $482,475. This represents 0.26% of its overall portfolio holdings.

Number of Shares
948
Holding current value
$482,475
% of portfolio
0.26%

Shares

1 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 14, 2025

BUY
$459.11 - $506.91 $435,236 - $480,550
948 New
948 $476 Million

Others Institutions Holding BRK-B

About BERKSHIRE HATHAWAY INC - Class B


  • Ticker BRK-B
  • Exchange NYSE
  • Sector Financial Services
  • Industry Insurance—Diversified
  • Shares Outstandng 1,301,129,984
  • Market Cap $662B
More about BRK-B
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