Please answer the given financial question based on the context.
Context: five-year performance comparison 2013 the following graph provides an indicator of cumulative total shareholder returns for the corporation as compared to the peer group index ( described above ) , the dow jones , and the s&p 500 . the graph assumes that the value of the investment in the common stock of union pacific corporation and each index was $ 100 on december 31 , 2002 , and that all dividends were reinvested . comparison of five-year cumulative return 2002 2003 2004 2005 2006 2007 upc s&p 500 peer group dj trans purchases of equity securities 2013 during 2007 , we repurchased 13266070 shares of our common stock at an average price of $ 115.66 . during the first nine months of 2007 , we repurchased 10639916 shares of our common stock at an average price per share of $ 112.68 . the following table presents common stock repurchases during each month for the fourth quarter of 2007 : period number of shares purchased average paid per total number of shares purchased as part of a publicly announced plan or program maximum number of shares that may yet be purchased under the plan or program .
|period|totalnumber ofsharespurchased[a]|averagepricepaid pershare|total number of sharespurchased as part of apublicly announcedplan orprogram|maximum number ofshares that may yetbe purchased underthe plan orprogram[b]|
|oct . 1 through oct . 31|99782|$ 128.78|-|9774279|
|nov . 1 through nov . 30|540294|124.70|528000|9246279|
|dec . 1 through dec . 31|1986078|128.53|1869800|7376479|
|total|2626154|$ 127.75|2397800|n/a|
[a] total number of shares purchased during the quarter includes 228354 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares . [b] on january 30 , 2007 , our board of directors authorized us to repurchase up to 20 million shares of our common stock through december 31 , 2009 . we may make these repurchases on the open market or through other transactions . our management has sole discretion with respect to determining the timing and amount of these transactions. .
Question: what the percent of the total number of shares purchased in the fourth quarter of 2007 that was attested to upc by employees to pay stock option exercise prices


Answer: The answer is:0.08695