Update 5/31/15:
US companies pour billions into buying back stock, but workers — and the economy — may be paying a high price
April 25, 2015 - Cisco Stock Repurchase Program
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Source: U.S. Securities and Exchange Commission
April 26, 2014 - Cisco Stock Repurchase Program
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Source: U.S. Securities and Exchange Commission
According to the above Cisco 10-Q filings, year-over-year (2015 - 2014), Cisco spent $4.743 billion to repurchase 181 million Cisco common shares.
April 25, 2015 - Cisco Common Shares Issued and Outstanding
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Source: U.S. Securities and Exchange Commission
April 26, 2014 - Cisco Common Shares Issued and Outstanding

Source: U.S. Securities and Exchange Commission
Yet according to the above Cisco 10-Q filings, year-over-year (2015 - 2014), Cisco's common shares issued and outstanding declined by just a mere -23 million shares.
That means year-over-year (2015-2014), $4.140 billion (87%) of Cisco's stock repurchases supported John Chambers' dilutive management compensation practices.
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