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Common Stock (Notes)
3 Months Ended
Mar. 31, 2023
Common Stock [Abstract]  
Common Stock Common Stock
The following represents the Company's purchase of Charter Class A common stock and the effect on the consolidated statements of cash flows during the three months ended March 31, 2023 and 2022.

Three Months Ended March 31,
20232022
Shares$Shares$
Share buybacks 2,304,419 $863 5,325,594 $3,172 
Income tax withholding127,815 49 264,845 161 
Exercise cost40,681 148,657 
2,472,915 $912 5,739,096 $3,333 

Share buybacks above include shares of Charter Class A common stock purchased from Liberty Broadband Corporation (“Liberty Broadband”) as follows.

Three Months Ended March 31,
20232022
Number of shares purchased120,149 970,241 
Amount of shares purchased$42 $602 

As of March 31, 2023, Charter had remaining board authority to purchase an additional $305 million of Charter’s Class A common stock and/or Charter Holdings common units, excluding purchases from Liberty Broadband. The Company also withholds shares of its Class A common stock in payment of income tax withholding owed by employees upon vesting of equity awards as well as exercise costs owed by employees upon exercise of stock options.
In 2022, Charter’s board of directors approved the retirement of the then currently held treasury stock and those shares were retired as of December 31, 2022. The Company accounts for treasury stock using the cost method and includes treasury stock as a component of total shareholders’ equity.