cdw corporation and subsidiaries notes to consolidated financial statements holders of class b common units in connection with the distribution is subject to any vesting provisions previously applicable to the holder 2019s class b common units . class b common unit holders received 3798508 shares of restricted stock with respect to class b common units that had not yet vested at the time of the distribution . for the year ended december 31 , 2013 , 1200544 shares of such restricted stock vested/settled and 5931 shares were forfeited . as of december 31 , 2013 , 2592033 shares of restricted stock were outstanding . stock options in addition , in connection with the ipo , the company issued 1268986 stock options to the class b common unit holders to preserve their fully diluted equity ownership percentage . these options were issued with a per-share exercise price equal to the ipo price of $ 17.00 and are also subject to the same vesting provisions as the class b common units to which they relate . the company also granted 19412 stock options under the 2013 ltip during the year ended december 31 , 2013 . restricted stock units ( 201crsus 201d ) in connection with the ipo , the company granted 1416543 rsus under the 2013 ltip at a weighted- average grant-date fair value of $ 17.03 per unit . the rsus cliff-vest at the end of four years . valuation information the company attributes the value of equity-based compensation awards to the various periods during which the recipient must perform services in order to vest in the award using the straight-line method . post-ipo equity awards the company has elected to use the black-scholes option pricing model to estimate the fair value of stock options granted . the black-scholes option pricing model incorporates various assumptions including volatility , expected term , risk-free interest rates and dividend yields . the assumptions used to value the stock options granted during the year ended december 31 , 2013 are presented below . year ended december 31 , assumptions 2013 .

year ended december 31 2013: weighted-average grant date fair value: 4.75
weighted-average volatility ( 1 ): -35
weighted-average risk-free rate ( 2 ): -1.58
dividend yield: -1
expected term ( in years ) ( 3 ): 5.4

expected term ( in years ) ( 3 ) . . . . . . . . . . . . . . . . . . . . . . . . . 5.4 ( 1 ) based upon an assessment of the two-year , five-year and implied volatility for the company 2019s selected peer group , adjusted for the company 2019s leverage . ( 2 ) based on a composite u.s . treasury rate . ( 3 ) the expected term is calculated using the simplified method . the simplified method defines the expected term as the average of the option 2019s contractual term and the option 2019s weighted-average vesting period . the company utilizes this method as it has limited historical stock option data that is sufficient to derive a reasonable estimate of the expected stock option term. .

Questions:
what was the number of forfeited shares as of december 2013?
and what was that of vested shares?
if the forfeited shares became vested, what would then be the total sum of vested shares?
what percentage would that sum represent in relation to the total number of shares?

Answers:
5931
1200544
1206475
0.317