2.2.0.25falsefalse0207 - Disclosure - Stockholders Equitytruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $FROM_Jan01_2011_TO_Mar31_2011http://www.sec.gov/CIK0001265888duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0EPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_StockholdersEquityNoteAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseStockholders Equity [Abstract]3false0us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse007. STOCKHOLDERS' EQUITYStock-Based CompensationThe Company has three stock incentive plans: the NeuStar, Inc. 1999 Equity Incentive Plan (1999 Plan); the NeuStar, Inc. 2005 Stock Incentive Plan (2005 Plan); and the NeuStar, Inc. 2009 Stock Incentive Plan (2009 Plan) (collectively, the Plans). The Company may grant to its directors, employees and consultants awards under the 2009 Plan in the form of incentive stock options, nonqualified stock options, stock appreciation rights, shares of restricted stock, restricted stock units, performance vested restricted stock units (PVRSUs) and other stock-based awards. The aggregate number of shares of Class A common stock with respect to which all awards may be granted under the 2009 Plan is 10,950,000, plus the number of shares underlying awards granted under the 1999 Plan and the 2005 Plan that remain undelivered following any expiration, cancellation or forfeiture of such awards. As of March 31, 2011, 7,073,592 shares were available for grant or award under the 2009 Plan. The term of any stock option granted under the Plans may not exceed ten years. The exercise price per share for options granted under the Plans may not be less than 100% of the fair market value of the common stock on the option grant date. The Board of Directors or Compensation Committee of the Board of Directors determines the vesting schedule of the options, with a maximum vesting period of ten years. Options issued generally vest with respect to 25% of the shares underlying the option on the first anniversary of the grant date and 2.083% of the shares on the last day of each succeeding calendar month thereafter. The options expire seven to ten years from the date of issuance and are forfeitable upon termination of an option holder's service. The Company has granted and may in the future grant restricted stock to directors, employees and consultants. The Board of Directors or Compensation Committee of the Board of Directors determines the vesting schedule of the restricted stock, with a maximum vesting period of ten years. Restricted stock issued generally vests in equal annual installments over a four-year term. Stock-based compensation expense recognized for the three months ended March 31, 2010 and 2011 was $3.9 million and $6.3 million, respectively. As of March 31, 2011, total unrecognized compensation expense related to non-vested stock options, non-vested restricted stock awards, non-vested restricted stock units and non-vested PVRSUs granted prior to that date was estimated at $48.2 million, which the Company expects to recognize over a weighted average period of approximately 1.73 years. Total unrecognized compensation expense as of March 31, 2011 is estimated based on outstanding non-vested stock options, non-vested restricted stock awards, non-vested restricted stock units and non-vested PVRSUs and may be increased or decreased in future periods for subsequent grants or forfeitures, as well as changes in the estimated fair value of non-vested share-based awards granted to consultants.Stock OptionsThe Company utilizes the Black-Scholes option pricing model for estimating the fair value of stock options granted. The weighted-average grant date fair value of options granted during the three months ended March 31, 2010 and 2011 was $8.07 and $8.70, respectively. The following are the weighted-average assumptions used in valuing the stock options granted during the three months ended March 31, 2010 and 2011, and a discussion of the Company's assumptions: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;"> </td><td colspan="4" style="width: 178px; text-align:center;border-color:#000000;min-width:178px;">Three Months Ended</td></tr><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;"> </td><td colspan="4" style="width: 178px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:178px;">March 31,</td></tr><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;"> </td><td style="width: 64px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:64px;">2010</td><td style="width: 25px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 64px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:64px;">2011</td><td style="width: 25px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:25px;"> </td></tr><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;">Dividend yield</td><td style="width: 64px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:64px;"> -</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;">%</td><td style="width: 64px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:64px;"> -</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;">%</td></tr><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;">Expected volatility</td><td style="width: 64px; text-align:right;border-color:#000000;min-width:64px;"> 39.30</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;">%</td><td style="width: 64px; text-align:right;border-color:#000000;min-width:64px;"> 36.98</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;">%</td></tr><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;">Risk-free interest rate</td><td style="width: 64px; text-align:right;border-color:#000000;min-width:64px;"> 2.17</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;">%</td><td style="width: 64px; text-align:right;border-color:#000000;min-width:64px;"> 1.70</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;">%</td></tr><tr style="height: 16px"><td style="width: 231px; text-align:left;border-color:#000000;min-width:231px;">Expected life of options (in years)</td><td style="width: 64px; text-align:right;border-color:#000000;min-width:64px;"> 4.42</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 64px; text-align:right;border-color:#000000;min-width:64px;"> 4.42</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td></tr></table></div>Dividend yield — The Company has never declared or paid dividends on its common stock and does not anticipate paying dividends in the foreseeable future. Expected volatility — Volatility is a measure of the amount by which a financial variable such as a share price has fluctuated (historical volatility) or is expected to fluctuate (expected volatility) during a period. The Company considered the implied volatility and historical volatility of its stock price over a term similar to the expected life of the grant in determining its expected volatility. Risk-free interest rate — The risk-free interest rate is based on U.S. Treasury bonds issued with similar life terms to the expected life of the grant. Expected life of the options — The expected life is the period of time that options granted are expected to remain outstanding. The Company determined the expected life of stock options based on the weighted average of (a) the time-to-settlement from grant of historically settled options and (b) a hypothetical holding period for the outstanding vested options as of the date of fair value estimation. The hypothetical holding period is the amount of time the Company assumes a vested option will be held before the option is exercised. To determine the hypothetical holding period, the Company assumes that a vested option will be exercised at the midpoint of the time between the date of fair value estimation and the remaining contractual life of the unexercised vested option.The following table summarizes the Company's stock option activity:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:left;border-color:#000000;min-width:220px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Weighted-</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:left;border-color:#000000;min-width:220px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Average</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:center;border-color:#000000;min-width:220px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Weighted-</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Aggregate</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Remaining</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:center;border-color:#000000;min-width:220px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Average</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Intrinsic </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Contractual</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:center;border-color:#000000;min-width:220px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Exercise</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Value</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Life</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:center;border-color:#000000;min-width:220px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Shares </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Price </td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">(in millions)</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">(in years)</td></tr><tr style="height: 16px"><td colspan="2" style="width: 226px; text-align:left;border-color:#000000;min-width:226px;">Outstanding at December 31, 2010</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 6,715,559</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 20.68</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:left;border-color:#000000;min-width:220px;">Options granted </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 1,772,973</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 26.45</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:left;border-color:#000000;min-width:220px;">Options exercised </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> (790,929)</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 8.31</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 220px; text-align:left;border-color:#000000;min-width:220px;">Options forfeited </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:89px;"> (138,156)</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 22.26</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 226px; text-align:left;border-color:#000000;min-width:226px;">Outstanding at March 31, 2011</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:89px;"> 7,559,447</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 23.30</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 27.0</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 4.84</td></tr><tr style="height: 16px"><td colspan="2" style="width: 226px; text-align:left;border-color:#000000;min-width:226px;">Exercisable at March 31, 2011</td><td style="width: 89px; border-top-style:double;border-top-width:3px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:89px;"> 3,412,707</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 23.05</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 16.6</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 3.28</td></tr></table></div>The aggregate intrinsic value of options exercised for the three months ended March 31, 2010 and 2011 was $1.9 million and $14.3 million, respectively. Restricted StockThe following table summarizes the Company's non-vested restricted stock activity for the three months ended March 31, 2011: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:center;border-color:#000000;min-width:262px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Weighted-</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Aggregate</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:center;border-color:#000000;min-width:262px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Average</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Intrinsic</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:center;border-color:#000000;min-width:262px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Grant Date</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Value</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:center;border-color:#000000;min-width:262px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Shares </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Fair Value </td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">(in millions)</td></tr><tr style="height: 16px"><td colspan="2" style="width: 268px; text-align:left;border-color:#000000;min-width:268px;">Outstanding at December 31, 2010</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 534,590</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 22.82</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:left;border-color:#000000;min-width:262px;">Restricted stock granted </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 284,615</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 26.45</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:left;border-color:#000000;min-width:262px;">Restricted stock vested </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> (78,869)</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 22.74</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 262px; text-align:left;border-color:#000000;min-width:262px;">Restricted stock forfeited </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:89px;"> (28,365)</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 24.55</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 268px; text-align:left;border-color:#000000;min-width:268px;">Outstanding at March 31, 2011</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:89px;"> 711,971</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 24.21</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 18.2</td></tr></table></div>The total aggregate intrinsic value of restricted stock vested during the three months ended March 31, 2011 was approximately $2.0 million. During the three months ended March 31, 2011, the Company repurchased 27,618 shares of common stock for an aggregate purchase price of $0.7 million, pursuant to the participants' rights under the Company's stock incentive plans to elect to use common stock to satisfy their tax withholding obligations.Performance Vested Restricted Stock UnitsDuring the year ended December 31, 2010 and the three months ended March 31, 2011, the Company granted 266,580 and 232,537 PVRSUs, respectively, to certain employees with an aggregate fair value of $6.1 million and $6.2 million, respectively. The vesting of these stock awards is contingent upon the Company achieving specified financial targets at the end of the specified performance period and an employee's continued employment through the vesting period. The level of achievement of the performance conditions affects the number of shares that will ultimately be issued. The range of possible stock-based award vesting is between 0% and 150% of the initial target. Compensation expense related to these awards is recognized over the requisite service period based on the Company's estimate of the achievement of the performance target and vesting period. As of March 31, 2011, the Company estimates that 100% of the performance target for PVRSUs granted during each of 2010 and 2011, respectively, will be achieved.The fair value of a PVRSU is measured by reference to the closing market price of the Company's common stock on the date of the grant. Compensation expense is recognized on a straight-line basis over the requisite service period based on the number of PVRSUs expected to vest.The following table summarizes the Company's non-vested PVRSU activity for the three months ended March 31, 2011:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:left;border-color:#000000;min-width:204px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Weighted-</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Aggregate</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:center;border-color:#000000;min-width:204px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Average</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Intrinsic</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:center;border-color:#000000;min-width:204px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Grant Date</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Value</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:center;border-color:#000000;min-width:204px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Shares </td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Fair Value </td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">(in millions)</td></tr><tr style="height: 16px"><td colspan="2" style="width: 210px; text-align:left;border-color:#000000;min-width:210px;">Non-vested December 31, 2010</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 840,923</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 19.53</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:left;border-color:#000000;min-width:204px;">Granted </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 232,537</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 26.45</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:left;border-color:#000000;min-width:204px;">Vested </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> -</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> -</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 204px; text-align:left;border-color:#000000;min-width:204px;">Forfeited </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:89px;"> (199,090)</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 25.15</td><td style="width: 25px; text-align:left;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:left;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 210px; text-align:left;border-color:#000000;min-width:210px;">Non-vested March 31, 2011</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:89px;"> 874,370</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 20.09</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 22.4</td></tr></table></div>Restricted Stock UnitsThe following table summarizes the Company's restricted stock units activity for the three months ended March 31, 2011:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Weighted- </td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Aggregate</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Average</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Intrinsic</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;"> </td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Grant Date </td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:center;border-color:#000000;min-width:89px;">Value</td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Shares</td><td style="width: 25px; text-align:center;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">Fair Value</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:89px;">(in millions)</td></tr><tr style="height: 16px"><td colspan="2" style="width: 232px; text-align:left;border-color:#000000;min-width:232px;">Outstanding at December 31, 2010</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 231,865</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> 23.99</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;">Granted</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> -</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> -</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;">Vested</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> -</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> -</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td style="width: 6px; text-align:left;border-color:#000000;min-width:6px;"> </td><td style="width: 226px; text-align:left;border-color:#000000;min-width:226px;">Forfeited</td><td style="width: 89px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:89px;"> (750)</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 25.84</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;"> </td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 232px; text-align:left;border-color:#000000;min-width:232px;">Outstanding at March 31, 2011</td><td style="width: 89px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:89px;"> 231,115</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 23.99</td><td style="width: 25px; text-align:right;border-color:#000000;min-width:25px;">$</td><td style="width: 89px; text-align:right;border-color:#000000;min-width:89px;"> 5.9</td></tr></table></div>These restricted stock units were issued to non-management directors of the Company's board of directors and certain employees. Restricted stock units granted to non-management directors will fully vest on the earlier of the first anniversary of the date of grant or the day preceding the date in the following calendar year on which the Company's annual meeting of stockholders is held. Upon vesting, each director's restricted stock units automatically will be converted into deferred stock units, which will be delivered to the director in shares of the Company's stock six months following the director's termination of Board service. Restricted stock units granted to employees are expected to fully vest on the achievement of performance targets at the end of specified performance periods.Share Repurchase ProgramThe Company announced on July 28, 2010 that its Board of Directors had authorized a three-year program under which the Company may acquire up to $300 million of its outstanding Class A common shares.  Share repurchases under this program may be made through Rule 10b5-1 programs, open market purchases, privately negotiated transactions or otherwise as market conditions warrant, at prices the Company deems appropriate, and subject to applicable legal requirements and other factors. During the first quarter of 2011, the Company repurchased 0.7 million shares of its Class A common stock at an average price of $25.95 per share, for a total purchase price of $18.5 million. As of March 31, 2011, a total of 2.4 million shares at an average price of $24.74 per share had been repurchased under this program for an aggregate purchase price of $58.9 million. All repurchased shares are accounted for as treasury shares.7. STOCKHOLDERS' EQUITYStock-Based CompensationThe Company has three stock incentive plans: the NeuStar, Inc. 1999 Equity Incentive Plan (1999 Plan); thefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclosure of compensation-related costs for share-based compensation which may include disclosure of policies, compensation plan details, allocation of stock compensation, incentive distributions, share-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 falsefalseSTOCKHOLDERS' EQUITY12Stockholders EquityUnKnownUnKnownUnKnownUnKnownfalsetrue