Goel Rajeev K. sold PUBM

Footnotes

Following the sales reported in this Form 4, Mr. Goel holds 2,372,118 shares of Class A Common Stock and Class B Common Stock, which figure does not reflect vested but unexercised options, unvested options, or unvested restricted stock units, each as of the date of filing.; The sales reported in this line item represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units ("RSUs"). The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.; The price reported in this line item is a weighted average price. These shares were sold as part of pooled trades for multiple security holders of the Issuer at prices ranging from $19.42 to $19.44, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein with regard to the pooled trades.