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Common stock (Tables)
 9 Months Ended
Sep. 30, 2024
Equity [Abstract]  
Changes in issued, treasury and outstanding Berkshire common stock

Changes in shares of Berkshire’s common stock during the first nine months of 2024 are shown in the table below. In addition to our common stock, 1,000,000 shares of preferred stock are authorized, but none are issued.

 

 

Class A, $5 Par Value
(1,650,000 shares authorized)

 

 

Class B, $0.0033 Par Value
(3,225,000,000 shares authorized)

 

 

Issued

 

Treasury

 

Outstanding

 

 

Issued

 

Treasury

 

Outstanding

 

Balance at December 31, 2023

 

639,328

 

 

(71,553

)

 

567,775

 

 

 

1,528,152,352

 

 

(217,590,844

)

 

1,310,561,508

 

Conversions of Class A to
   Class B common stock

 

(10,778

)

 

—

 

 

(10,778

)

 

 

16,167,000

 

 

—

 

 

16,167,000

 

Treasury stock acquired

 

—

 

 

(4,787

)

 

(4,787

)

 

 

—

 

 

—

 

 

—

 

Treasury stock issued

 

—

 

 

—

 

 

—

 

 

 

—

 

 

1,368,508

 

 

1,368,508

 

Balance at September 30, 2024

 

628,550

 

 

(76,340

)

 

552,210

 

 

 

1,544,319,352

 

 

(216,222,336

)

 

1,328,097,016