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&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;2. Summary of Significant Accounting Policies&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Basis of Presentation&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The accompanying unaudited interim consolidated financial statements and footnotes have been prepared in accordance with generally accepted accounting principles in the United States of America (&amp;#8220;US GAAP&amp;#8221;) and applicable rules&amp;#160;and regulations of the Securities and Exchange Commissions (the &amp;#8220;SEC&amp;#8221;) regarding unaudited interim financial information.&amp;#160; In the opinion of management, the accompanying unaudited interim consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of the Company&amp;#8217;s Consolidated Balance Sheets, Statements of Operations, Comprehensive Loss, Mandatorily Redeemable Convertible Preferred Stock and Changes in Stockholders&amp;#8217; Deficit and Cash Flows for the interim periods presented.&amp;#160; Operating results for the interim periods presented are not necessarily indicative of the results of operations to be expected for the full year due to seasonal and other factors.&amp;#160; Certain information and footnote disclosures normally included in the consolidated financial statements in accordance with US GAAP have been omitted in accordance with the rules&amp;#160;and regulations of the SEC.&amp;#160; Accordingly, these unaudited interim consolidated financial statements and footnotes should be read in conjunction with the consolidated financial statements and accompanying notes thereto included in the Company&amp;#8217;s prospectus dated June&amp;#160;26, 2013, filed with the SEC on June&amp;#160;27, 2013 pursuant to Rule&amp;#160;424(b)(4)&amp;#160;under the Securities Act (&amp;#8220;Prospectus&amp;#8221;).&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Principles of Consolidation&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The unaudited interim consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries.&amp;#160; All inter-company balances and transactions have been eliminated in the accompanying unaudited interim consolidated financial statements.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Initial Public Offering and Pro Forma Presentation&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;On July&amp;#160;2, 2013, the Company closed its initial public offering (&amp;#8220;IPO&amp;#8221;) of common stock in which the Company issued and sold 7,500,000 shares of common stock (refer to note 15).&amp;#160; Upon closing of the IPO, all of the Company&amp;#8217;s outstanding mandatorily redeemable convertible preferred stock (&amp;#8220;preferred stock&amp;#8221;) automatically converted into 34,172,316 shares of common stock, which includes 1,584,863 of additional shares of common stock related to the Series&amp;#160;F ratchet provision (refer to note 10), and all of the Company&amp;#8217;s outstanding Series&amp;#160;II common stock automatically converted into 1,052,464 shares of common stock. &amp;#160;In addition, the outstanding warrants to purchase preferred stock automatically converted into warrants to purchase 142,534 shares of common stock, and the warrants to purchase preferred stock liability of $790, which includes a $136 adjustment for the change in fair value through July&amp;#160;2, 2013, was reclassified to additional paid-in capital. The pro forma stockholders&amp;#8217; equity, as set forth on the pro forma June&amp;#160;30, 2013 consolidated balance sheet, has been adjusted to reflect the assumed: (i)&amp;#160;conversion of the Company&amp;#8217;s preferred stock and Series&amp;#160;II common stock into common stock, (ii)&amp;#160;conversion of the warrants to purchase preferred stock into warrants to purchase common stock, and the reclassification of such warrants from a preferred stock liability to additional paid-in capital and (iii)&amp;#160;the sale and issuance of 7,500,000 shares of common stock and the receipt of net proceeds upon the closing of the IPO .&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The pro forma net loss attributable to common stockholders and pro forma net loss per share attributable to common stockholders for the three and six months ended June&amp;#160;30, 2013 has been adjusted to reflect, as of January&amp;#160;1, 2013, the assumed completion of the Company&amp;#8217;s IPO and the: (i)&amp;#160;conversion of all outstanding shares of preferred stock into an aggregate of 34,172,316 shares of common stock, (ii)&amp;#160;conversion of all outstanding shares of Series&amp;#160;II common stock into an aggregate of 1,052,464 shares of common stock and (iii)&amp;#160;conversion of the warrants to purchase preferred stock to warrants to purchase common stock as of January&amp;#160;1, 2013.&amp;#160; The amount recorded to reflect the Series&amp;#160;F preferred stock deemed dividend as a result of the Series&amp;#160;F ratchet provision (refer to note 10) and to adjust the warrants to purchase preferred stock to fair value through July&amp;#160;2, 2013 have been included to arrive at pro forma net loss attributable to common stockholders and pro forma net loss per share attributable to common stockholders.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The Company believes that the pro forma consolidated balance sheet, pro forma net loss attributable to common stockholders and pro forma net loss per share attributable to common stockholders provides material information to investors, as the conversion of the Company&amp;#8217;s preferred stock and Series&amp;#160;II common stock to common stock, conversion of the warrants to purchase preferred stock to common stock warrants and the closing of the IPO occurred on July&amp;#160;2, 2013, and therefore the disclosure of the pro forma consolidated balance sheet, pro forma net loss attributable to common stockholders and pro forma net loss per share attributable to common stockholders provides measures of equity, net loss and net loss per share that are comparable to what will be reported by the Company in its consolidated financial statements for the periods subsequent to and including July&amp;#160;2, 2013.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Recently Issued Accounting Pronouncements&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;Accumulated Other Comprehensive Income&lt;/font&gt;&lt;/i&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;In February&amp;#160;2013, the Financial Accounting Standards Board (&amp;#8220;FASB&amp;#8221;) issued new authoritative guidance requiring new disclosures about reclassifications from accumulated other comprehensive income to net loss. This new guidance requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements where net loss is presented or in the notes thereto, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net loss but only if the amount reclassified is required under US&amp;#160;GAAP to be reclassified to net loss in its entirety in the same reporting period.&amp;#160; For other amounts that are not required under US&amp;#160;GAAP to be reclassified in their entirety to net loss, an entity is required to cross-reference to other disclosures required under US&amp;#160;GAAP that provide additional detail about those amounts. The new guidance is effective prospectively for annual and interim periods beginning after December&amp;#160;15, 2012.&amp;#160; The Company adopted this guidance in its interim period beginning April&amp;#160;1, 2013. The adoption of this new guidance did not have a material impact on its unaudited interim consolidated financial statements and the required disclosures are provided in note&amp;#160;11.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Revenue Recognition and Deferred Revenue&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The Company generates revenue primarily from the delivery of in-stream video advertisements for brand advertisers and agencies through the Tremor Video Network.&amp;#160; The Company also generates revenue from selling licenses to advertisers, agencies and publishers. &amp;#160;Revenue is recognized when the related services are delivered based on the specific terms of the contract, which are commonly based on the number of impressions delivered or by the actions of the viewers.&amp;#160; The Company recognizes revenue when four basic criteria are met: (1)&amp;#160;persuasive evidence exists of an arrangement with the client reflecting the terms and conditions under which the services will be provided; (2)&amp;#160;services have been provided or delivery has occurred; (3)&amp;#160;the fee is fixed or determinable; and (4)&amp;#160;collection is reasonably assured.&amp;#160; Collectability is assessed based on a number of factors, including the creditworthiness of a client and transaction history.&amp;#160; Amounts billed or collected in excess of revenue recognized are included as deferred revenue.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The Company recognizes revenue from the delivery of video ads in the period in which the video ads are delivered.&amp;#160; Specifically, revenue is recognized for video ad delivery through the Tremor Video Network upon the delivery of each impression served for cost per impression ad campaign (&amp;#8220;CPM&amp;#8221;), engagement by the consumer with a video ad campaign or the completion of a video ad by the consumer ad campaign.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;In the normal course of business, the Company acts as an intermediary in executing transactions with third parties.&amp;#160; The determination of whether revenue should be reported on a gross or net basis is based on an assessment of whether the Company is acting as the principal or an agent in the Company&amp;#8217;s transactions.&amp;#160; In determining whether the Company acts as the principal or an agent, the Company follows the accounting guidance for principal-agent considerations.&amp;#160; The determination of whether the Company is acting as a principal or an agent in a transaction involves judgment and is based on an evaluation of the terms of each arrangement.&amp;#160; While none of the factors individually are considered presumptive or determinative, because the Company is the primary obligor and is responsible for (1)&amp;#160;identifying and contracting with third-party advertisers, (2)&amp;#160;establishing the selling prices of the video ads sold, (3)&amp;#160;performing all billing and collection activities, including retaining credit risk, and (4)&amp;#160;bearing sole responsibility for fulfillment of the advertising, the Company acts as the principal in these arrangements and therefore reports revenue earned and costs incurred related to these transactions on a gross basis.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;The license fees for VHA and the Company&amp;#8217;s publisher solutions are based on the number of impressions being analyzed through these solutions.&amp;#160; The Company recognizes revenue with respect to these solutions on a CPM basis based on the number of impressions being analyzed in a given month.&amp;#160; Typically, the Company&amp;#8217;s license terms are for one year periods.&amp;#160; In limited cases, the Company charges a minimum monthly fee.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-ALIGN: center; MARGIN: 0in 0in 0pt;" align="center"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;Deferred revenue arises as a result of differences between the timing of revenue recognition and receipt of cash from the Company&amp;#8217;s clients.&amp;#160; As of December&amp;#160;31, 2012 and June&amp;#160;30, 2013&amp;#160; there were $210 and $189, respectively, of services for which cash payments were received in advance of the Company&amp;#8217;s performance of the service under the arrangement and recorded as deferred revenue in the accompanying consolidated balance sheets.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Cost of Revenue&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;Cost of revenue primarily represents the video advertising inventory costs under the Company&amp;#8217;s publisher contracts, third party hosting fees and third party serving fees incurred to deliver the video ads run through the Tremor Video Network.&amp;#160; Cost of revenue also includes costs of licenses from third party data providers utilized in the Company&amp;#8217;s VHA solution.&amp;#160; Substantially all of the Company&amp;#8217;s cost of revenue is attributable to video advertising inventory costs under its publisher contracts.&amp;#160; Cost of revenue is recognized on a publisher-by-publisher basis at the same time that the associated advertising revenue is recognized.&amp;#160; Substantially all of the Company&amp;#8217;s exclusive publisher contracts contain minimum percentage fill rates on qualified video ad requests, which effectively means that the Company must purchase this inventory even if the Company lacks a video advertising campaign to deliver to these video ad impressions.&amp;#160; The Company recognizes the difference between the contractually required fill rate and the number of video ads actually delivered on the publisher&amp;#8217;s website, if any, as a cost of revenue as of the end of each applicable monthly period.&amp;#160; Historically, the impact of the difference between the contractually required fill rate and the number of ads delivered has not been material. Costs owed to publishers but not yet paid are recorded in the consolidated balance sheets as accounts payable and accrued expenses.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;b&gt;&lt;i&gt;&lt;font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold;" size="2"&gt;Concentrations of Credit Risk&lt;/font&gt;&lt;/i&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;Financial instruments that subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable.&amp;#160; All of the Company&amp;#8217;s cash and cash equivalents are held at financial institutions that management believes to be of high credit quality.&amp;#160; The Company&amp;#8217;s cash and cash equivalent accounts exceed federally insured limits at times.&amp;#160; The Company has not experienced any losses on cash and cash equivalents to date.&amp;#160; To manage accounts receivable risk, the Company evaluates the creditworthiness of its clients and maintains an allowance for doubtful accounts.&lt;/font&gt;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt;"&gt;&lt;font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;" size="2"&gt;During the three and six months ended June&amp;#160;30, 2012 and 2013, there were no advertisers that accounted for more than 10% of revenue or greater than 10% of outstanding accounts receivables at December&amp;#160;31, 2012 and June&amp;#160;30, 2013.&lt;/font&gt;&lt;/p&gt;
&lt;p style="MARGIN: 0in 0in 0pt;"&gt;&amp;#160;&lt;/p&gt;
&lt;/div&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows.  Describes procedure if disclosures are provided in more than one note to the financial statements.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 275

 -SubTopic 10

 -Section 50

 -Paragraph 2

 -URI http://asc.fasb.org/extlink&amp;oid=6927468&amp;loc=d3e6003-108592



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