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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
________________________________________________
FORM 10-Q
_____________________________________________
(Mark One)
☒
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2020
OR
☐
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _______ to _______
Commission File Number: 001-38678
________________________________________________
UPWORK INC.
(Exact Name of Registrant as Specified in its Charter)
________________________________________________

Delaware46-4337682
(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)
2625 Augustine Drive, Suite 601
Santa Clara,California95054
(Address of principal executive offices)(Zip Code)
(650) 316-7500
(Registrant’s telephone number, including area code)
_______________________________________________
Securities registered pursuant to Section 12(b) of the Act:
Title of Each ClassTrading SymbolName of Each Exchange on Which Registered
Common Stock, $0.0001 par value per shareUPWKThe Nasdaq Stock Market LLC
_______________________________________________
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes  ☒    No  ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒    No  ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer☒Accelerated filer☐
Non-accelerated filer☐Smaller reporting company☐
Emerging growth company☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No ☒
As of April 30, 2020, there were 115,142,604 shares of the registrant’s common stock outstanding.


TABLE OF CONTENTS
Page
Special Note Regarding Forward-Looking Statements
PART I—FINANCIAL INFORMATION
Item 1.Financial Statements (Unaudited)
Condensed Consolidated Balance Sheets as of March 31, 2020 and December 31, 2019
Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2020 and 2019
Condensed Consolidated Statements of Stockholders’ Equity for the Three Months Ended March 31, 2020 and 2019
Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2020 and 2019
Notes to Condensed Consolidated Financial Statements
Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations
Item 3.Quantitative and Qualitative Disclosures About Market Risk
Item 4.Controls and Procedures
PART II—OTHER INFORMATION
Item 1.Legal Proceedings
Item 1A.Risk Factors
Item 2.Unregistered Sales of Equity Securities and Use of Proceeds
Item 6.Exhibits
Signatures

Unless otherwise expressly stated or the context otherwise requires, references in this Quarterly Report on Form 10-Q (this “Quarterly Report” or “report”) to “Upwork,” “Company,” “our,” “us,” and “we” and similar references refer to Upwork Inc. and its wholly-owned subsidiaries.


SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
This Quarterly Report contains forward-looking statements within the meaning of the federal securities laws. All statements contained in this Quarterly Report, other than statements of historical fact, including statements regarding our future operating results and financial position, our business strategy and plans, potential growth or growth prospects, future research and development, sales and marketing and general and administrative expenses, and our objectives for future operations, are forward-looking statements. In addition, any statements regarding the impacts of the COVID-19 pandemic on our business and actions we have taken in response to the COVID-19 pandemic are forward-looking statements. Words such as “believes,” “may,” “will,” “estimates,” “potential,” “continues,” “anticipates,” “intends,” “expects,” “could,” “would,” “projects,” “plans,” “targets,” and variations of such words and similar expressions are intended to identify forward-looking statements.

We have based these forward-looking statements largely on our current expectations and projections as of the date of this filing about future events and trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives, and financial needs. These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including those described in Part II, Item 1A, “Risk Factors” in this Quarterly Report and the impact of the COVID-19 pandemic. Readers are urged to carefully review and consider the various disclosures made in this Quarterly Report and in other documents we file from time to time with the Securities and Exchange Commission (the “SEC”) that disclose risks and uncertainties that may affect our business. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for us to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties, and assumptions, the future events and circumstances discussed in this Quarterly Report may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.
You should not rely upon forward-looking statements as predictions of future events. The events and circumstances reflected in the forward-looking statements may not be achieved or occur. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, performance, or achievements. In addition, the forward-looking statements in this Quarterly Report are made as of the date of this filing, and we do not undertake, and expressly disclaim any duty, to update such statements for any reason after the date of this Quarterly Report or to conform statements to actual results or revised expectations, except as required by law.
You should read this Quarterly Report and the documents that we reference herein and have filed with the SEC as exhibits to this Quarterly Report with the understanding that our actual future results, performance, and events and circumstances may be materially different from what we expect.


1

PART I—FINANCIAL INFORMATION
Item 1. Financial Statements.
UPWORK INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except share and per share data)
(Unaudited)
March 31, 2020December 31, 2019
ASSETS
Current assets
Cash and cash equivalents$65,635  $48,392  
Marketable securities79,693  85,481  
Funds held in escrow, including funds in transit123,556  108,721  
Trade and client receivables – net of allowance of $2,102 and $2,215 as of March 31, 2020 and December 31, 2019, respectively
35,260  30,156  
Prepaid expenses and other current assets8,387  7,885  
Total current assets312,531  280,635  
Property and equipment, net24,989  21,454  
Goodwill118,219  118,219  
Intangible assets, net2,668  3,335  
Operating lease asset22,620  21,908  
Other assets, noncurrent1,040  829  
Total assets$482,067  $446,380  
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable$1,719  $652  
Escrow funds payable123,556  108,721  
Debt, current22,589  7,584  
Accrued expenses and other current liabilities23,394  18,342  
Deferred revenue14,386  13,799  
Total current liabilities185,644  149,098  
Debt, noncurrent8,814  10,699  
Operating lease liability, noncurrent22,489  21,186  
Other liabilities, noncurrent6,384  5,973  
Total liabilities223,331  186,956  
Commitments and contingencies (Note 6)
Stockholders’ equity
Common stock, $0.0001 par value; 490,000,000 shares authorized as of March 31, 2020 and December 31, 2019; 114,866,938 and 113,604,398 shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively
11  11  
Additional paid-in capital440,703  431,370  
Accumulated deficit(181,978) (171,957) 
Total stockholders’ equity258,736  259,424  
Total liabilities and stockholders’ equity$482,067  $446,380  
The accompanying notes are an integral part of these condensed consolidated financial statements.
2

UPWORK INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)
(Unaudited)

Three Months Ended March 31,
20202019
Revenue$83,196  $68,476  
Cost of revenue23,485  21,125  
Gross profit59,711  47,351  
Operating expenses
Research and development19,348  15,800  
Sales and marketing30,678  20,518  
General and administrative17,824  15,661  
Provision for transaction losses912  637  
Total operating expenses68,762  52,616  
Loss from operations(9,051) (5,265) 
Interest expense230  373  
Other (income) expense, net731  (479) 
Loss before income taxes(10,012) (5,159) 
Income tax provision(9) (1) 
Net loss$(10,021) $(5,160) 
Net loss per share, basic and diluted$(0.09) $(0.05) 
Weighted-average shares used to compute net loss per share, basic and diluted114,119  106,639  

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

UPWORK INC.
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands, except share amounts)
(Unaudited)

Three Months Ended March 31, 2020Common StockAdditional Paid-in CapitalAccumulated
Deficit		Total
Stockholders’
Equity
SharesAmount
Balances as of December 31, 2019113,604,398  $11  $431,370  $(171,957) $259,424  
Issuance of common stock upon exercise of stock options949,887  —  3,165  —  3,165  
Stock-based compensation expense—  —  5,327  —  5,327  
Issuance of common stock for settlement of RSUs312,653  —  —  —  —  
Tides Foundation common stock warrant expense and other—  —  841  —  841  
Net loss—  —  —  (10,021) (10,021) 
Balances as of March 31, 2020114,866,938  $11  $440,703  $(181,978) $258,736  


Three Months Ended March 31, 2019Common StockAdditional Paid-in CapitalAccumulated
Deficit		Total
Stockholders’
Equity
SharesAmount
Balances as of December 31, 2018106,454,321  $11  $387,233  $(143,499) $243,745  
Cumulative effect adjustment from adoption of new accounting pronouncement—  —  —  (11,799) (11,799) 
Issuance of common stock upon exercise of stock options273,105  —  767  —  767  
Stock-based compensation expense—  —  4,188  —  4,188  
Issuance of common stock for settlement of RSUs2,332  —  —  —  —  
Net loss—  —  —  (5,160) (5,160) 
Balances as of March 31, 2019106,729,758  $11  $392,188  $(160,458) $231,741  

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

UPWORK INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
Three Months Ended March 31,
20202019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss$(10,021) $(5,160) 
Adjustments to reconcile net loss to net cash used in operating activities:
Provision for transaction losses767  415  
Depreciation and amortization2,308  1,532  
Amortization of debt issuance costs13  13  
Amortization of discount on purchases of marketable securities(174) (283) 
Amortization of operating lease asset969  1,072  
Tides Foundation common stock warrant expense188  252  
Stock-based compensation expense5,537  4,295  
Changes in operating assets and liabilities:
Trade and client receivables(5,891) (26,149) 
Prepaid expenses and other assets(464) (886) 
Operating lease liability(459) (378) 
Accounts payable994  (596) 
Accrued expenses and other liabilities3,881  (4,125) 
Deferred revenue650  603  
Net cash used in operating activities(1,702) (29,395) 
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities(26,789) (71,713) 
Proceeds from maturities of marketable securities33,000  —  
Purchases of property and equipment(1,288) (3,604) 
Internal-use software and platform development costs(1,999) (1,210) 
Net cash provided by (used in) investing activities2,924  (76,527) 
CASH FLOWS FROM FINANCING ACTIVITIES:
Changes in escrow funds payable14,834  21,899  
Proceeds from exercises of stock options3,165  764  
Proceeds from borrowings on debt15,000  25,000  
Repayment of debt(1,893) —  
Net cash provided by financing activities31,106  47,663  
NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH32,328  (58,259) 
Cash, cash equivalents, and restricted cash—beginning of period159,603  230,067  
Cash, cash equivalents, and restricted cash—end of period$191,931  $171,808  
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest$239  $357  
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING ACTIVITIES:
Property and equipment purchased but not yet paid$2,435  $1,190  
Internal-use software and platform development costs incurred but not yet paid$40  $20  
The accompanying notes are an integral part of these condensed consolidated financial statements.

5

UPWORK INC.
Notes to Condensed Consolidated Financial Statements
(Unaudited)
Note 1—Description of Business
Upwork Inc. (the “Company” or “Upwork”) operates an online talent solution that enables businesses (“clients”) to find and work with highly-skilled independent professionals (“freelancers,” and, together with clients, “users”). The Company was originally incorporated in the state of Delaware in December 2013 prior to and in connection with the combination (the “Elance-oDesk Combination”) of Elance, Inc. (“Elance”) and oDesk Corporation (“oDesk”). The Company changed its name to Elance-oDesk, Inc. shortly before the Elance-oDesk Combination in March 2014, and later to Upwork Inc. in May 2015. In 2015, the Company relaunched as Upwork and commenced consolidation of its two operating platforms. In 2016, following completion of the platform consolidation, the Company began operating under a single platform. The Company is currently headquartered in Santa Clara, California.
Unless otherwise expressly stated or the context otherwise requires, the terms “Upwork” and the “Company” in these notes to the condensed consolidated financial statements refer to Upwork and its wholly-owned subsidiaries.

6

Note 2—Basis of Presentation and Summary of Significant Accounting Policies
Basis of Presentation
The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and applicable rules and regulations of the SEC regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this Quarterly Report should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 (the “Annual Report”), filed with the SEC on March 2, 2020.
The condensed consolidated balance sheet as of December 31, 2019 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by U.S. GAAP.
The condensed consolidated financial statements include the accounts of Upwork Inc. and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated.
The accompanying condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, changes in stockholders’ equity and cash flows for the interim periods, but do not purport to be indicative of the results of operations or financial condition to be anticipated for the full year ending December 31, 2020.
Use of Estimates
The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the periods presented. Such estimates include, but are not limited to: the useful lives of assets; assessment of the recoverability of long-lived assets; goodwill impairment; standalone selling price of material rights and the period of time over which to defer and recognize the consideration allocated to the material rights; allowance for doubtful accounts; liabilities relating to transaction losses; the valuation of warrants; stock-based compensation; and accounting for income taxes. Management bases its estimates on historical experience and on various other assumptions that management believes to be reasonable under the circumstances. The Company evaluates its estimates, assumptions, and judgments on an ongoing basis using historical experience and other factors and revises them when facts and circumstances dictate.
Due to the COVID-19 pandemic, there has been uncertainty and disruption in the global economy. The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities. These estimates may change as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions.

7

Impacts of Recently Adopted Accounting Pronouncements on 2019 Interim Reporting
On December 31, 2019, the Company adopted Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (“Topic 606”), ASU No. 2016-02, Leases (“Topic 842”), and ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (“Topic 230”) effective as of January 1, 2019. As a result, interim results for reporting periods beginning on or after January 1, 2019 will differ from amounts previously reported on the Company’s quarterly reports on Form 10-Q. The following table summarizes the impacts of adopting these standards on the Company’s previously issued condensed consolidated statements of operations and cash flows for the three months ended March 31, 2019 (in thousands):
March 31, 2019
Balances,
Previously Issued		Topic
606
Topic
842 (1)
Topic
230		Balances,
as Reported
Condensed Consolidated Statement of Operations
Revenue$68,924  $(448) $—  $—  $68,476  
Operating expense—General and administrative15,677  —  (16) —  15,661  
Net loss(4,728) (448) 16  —  (5,160) 
Net loss per share, basic and diluted(0.04) (0.01) —  —  (0.05) 
Condensed Consolidated Statement of Cash Flows
Operating activities
Net loss$(4,728) $(448) $16  $—  $(5,160) 
Amortization of operating lease asset—  —  1,072  —  1,072  
Trade and client receivables(26,431) 282  —  —  (26,149) 
Prepaid expenses and other assets(991) —  105  —  (886) 
Operating lease liability—  —  (378) —  (378) 
Accrued expenses and other liabilities(3,042) (268) (815) —  (4,125) 
Deferred revenue169  434  —  —  603  
Investing activities—decrease (increase) in restricted cash250  —  —  (250) —  
Financing activities—changes in funds held in escrow, including funds in transit(21,899) —  —  21,899  —  
NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH(79,908) —  —  21,649  (58,259) 
Cash, cash equivalents, and restricted cash—beginning of period129,128  —  —  100,939  230,067  
Cash, cash equivalents, and restricted cash—end of period49,220  —  —  122,588  171,808  
(1) Amounts include other adjustments made in conjunction with the adoption of Topic 842.
Recently Adopted Accounting Pronouncements
The significant accounting policies applied in the Company’s audited consolidated financial statements, as disclosed in the Annual Report, are applied consistently in these unaudited interim condensed consolidated financial statements, except as noted below.

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In June 2016, the Financial Accounting Standards Board (the “FASB”) issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This standard changes the methodology for measuring credit losses on financial instruments and the timing of when such losses are recorded. The Company adopted ASU No. 2016-13 and related updates on January 1, 2020. The adoption did not have a material impact on the Company’s condensed consolidated financial statements.
In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Others (Topic 350): Simplifying the Test for Goodwill Impairment. ASU No. 2017-04 eliminates Step 2 from the goodwill impairment test, which measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. The Company adopted ASU No. 2017-04 on January 1, 2020. The adoption did not have a material impact on the Company’s condensed consolidated financial statements.
In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements on fair value measurements. The Company adopted ASU No. 2018-13 on January 1, 2020. The adoption did not have a material impact on the Company’s condensed consolidated financial statements.
In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU No. 2018-15 aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The Company adopted ASU No. 2018-15 on January 1, 2020 using the prospective adoption method. The adoption did not have a material impact on the Company’s condensed consolidated financial statements.
Recent Accounting Pronouncements Not Yet Adopted
The Company has reviewed all other accounting pronouncements issued during the three months ended March 31, 2020 and concluded they were either not applicable or not expected to have a material impact on the Company’s condensed consolidated financial statements.


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Note 3—Revenue
Disaggregation of Revenue
See “Note 9—Segment and Geographical Information” for the Company’s revenue disaggregated by type of service and geographic area.
Remaining Performance Obligations
As of March 31, 2020, the Company had approximately $17.6 million of remaining performance obligations. The Company’s remaining performance obligations consist of transaction price that has been allocated to unexercised material rights related to the Company’s arrangements with freelancers subject to tiered service fees, subscriptions, memberships, “Connects” (virtual tokens that allow freelancers to bid on projects on the Company’s platform), and certain incentive payments made to the Company by payment processors. As of March 31, 2020, the Company expects to recognize approximately $14.4 million over the next 12 months, with the remaining balance recognized thereafter.
The Company has applied the practical expedients and exemptions and does not disclose the value of remaining performance obligations for (i) contracts with an original expected length of one year or less; and (ii) contracts for which the variable consideration is allocated entirely to a wholly unsatisfied promise to transfer a distinct service that forms part of a single performance obligation under the series guidance.
Contract Balances
The following table provides information about the balances of the Company’s trade and client receivables, net of allowance and contract liabilities included in deferred revenue and other liabilities, noncurrent (in thousands):
March 31, 2020December 31, 2019
Trade and client receivables, net of allowance$35,260  $30,156  
Contract liabilities
Deferred revenue14,386  13,799  
Deferred revenue (component of other liabilities, noncurrent)3,215  3,153  
During the three months ended March 31, 2020, changes in the contract liabilities balances were a result of normal business activity and deferral of revenue related to arrangements with freelancers subject to tiered service fees and related allocation of transaction price to material rights.
Revenue recognized during the three months ended March 31, 2020 that was included in deferred revenue as of December 31, 2019 was $5.1 million. Revenue recognized during the three months ended March 31, 2019 that was included in deferred revenue as of January 1, 2019 was $3.5 million.

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Note 4—Fair Value Measurements
The Company defines fair value as the exchange price that would be received from the sale of an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The authoritative guidance describes three levels of inputs that may be used to measure fair value:
•Level I—Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets;
•Level II—Observable inputs other than Level I prices, such as unadjusted quoted prices for similar assets or liabilities in active markets, unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and
•Level III—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. These inputs are based on the Company’s own assumptions used to measure assets and liabilities at fair value and require significant management judgment or estimation.
The categorization of a financial instrument within the fair value hierarchy is based upon the lowest level of input that is significant to its fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the assets or liabilities.
The Company’s financial instruments that are carried at fair value consist of Level I and Level II assets as of March 31, 2020 and December 31, 2019. The following tables set forth the fair value of the Company’s financial assets measured at fair value on a recurring basis based on the three-tier fair value hierarchy (in thousands):

March 31, 2020
Level ILevel IILevel IIITotal
Cash equivalents—money market funds$59,479  $—  $—  $59,479  
Marketable securities
Commercial paper—  44,790  —  44,790  
U.S. government securities34,903  —  —  34,903  
Total financial assets$94,382  $44,790  $—  $139,172  

December 31, 2019
Level ILevel IILevel IIITotal
Cash equivalents—money market funds$35,286  $—  $—  $35,286  
Marketable securities
Commercial paper—  50,794  —  50,794  
U.S. government securities34,687  —  —  34,687  
Total financial assets$69,973  $50,794  $—  $120,767  
For each of the three months ended March 31, 2020 and 2019, the gross unrealized gains and losses on the Company’s marketable securities were immaterial. As of March 31, 2020 and 2019, the Company considered any decreases in market value to be temporary in nature and did not consider any of the Company’s marketable securities to be other-than-temporarily impaired. As such, the Company did not record any impairment charges with respect to its marketable securities during each of the three months ended March 31, 2020 and 2019.

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Note 5—Balance Sheet Components
Cash and Cash Equivalents, Restricted Cash, and Funds Held In Escrow, Including Funds In Transit
The following table reconciles cash and cash equivalents, restricted cash, and funds held in escrow that are restricted as reported in the condensed consolidated balance sheets to the total of the same amounts shown in the condensed consolidated statements of cash flows as of March 31, 2020 and December 31, 2019 (in thousands):
March 31, 2020December 31, 2019
Cash and cash equivalents$65,635  $48,392  
Restricted cash2,740  2,490  
Funds held in escrow, including funds in transit123,556  108,721  
Total cash, cash equivalents, and restricted cash as shown in the condensed consolidated statement of cash flows$191,931  $159,603  
Property and Equipment, Net
Property and equipment, net consisted of the following (in thousands):
March 31, 2020December 31, 2019
Computer equipment and software$3,989  $3,613  
Internal-use software and platform development14,303  12,726  
Leasehold improvements13,381  10,576  
Office furniture and fixtures2,865  2,454  
Total property and equipment34,538  29,369  
Less: accumulated depreciation(9,549) (7,915) 
Property and equipment, net$24,989  $21,454  
For the three months ended March 31, 2020 and 2019, depreciation expense related to property and equipment was $0.7 million and $0.8 million, respectively.
For the three months ended March 31, 2020 and 2019, the Company capitalized $1.6 million and $1.1 million of internal-use software and platform development costs, respectively.
For the three months ended March 31, 2020, amortization expense related to the capitalized internal-use software and platform development costs was $0.9 million. For the three months ended March 31, 2019, amortization expense related to the capitalized internal-use software and platform development costs was immaterial.
Intangible Assets, Net
All of the Company’s identifiable intangible assets were acquired in March 2014 from the Elance-oDesk Combination. Amortization expense of intangible assets was $0.7 million for each of the three months ended March 31, 2020 and 2019. Amortization expense is included in general and administrative expenses.


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Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
 March 31, 2020December 31, 2019
Accrued compensation and related benefits$6,089  $5,344  
Accrued freelancer costs1,665  622  
Accrued indirect taxes1,746  2,401  
Accrued vendor expenses9,499  5,485  
Accrued payment processing fees870  832  
Operating lease liability, current3,134  3,214  
Other391  444  
Total accrued expenses and other current liabilities$23,394  $18,342  
In February 2020, the Company made changes to its organizational structure to better align with its business strategies and streamline the delivery of its end-to-end user experiences. During the three months ended March 31, 2020, the Company incurred $1.6 million related to these initiatives, of which $0.4 million is included in accrued compensation and related benefits as of March 31, 2020.
Operating Leases
On January 1, 2020, the Company commenced an operating lease of one additional floor in its Chicago, Illinois office. As a result, the Company recognized a $1.7 million operating lease asset and $1.7 million operating lease liability on January 1, 2020, which are included in operating lease asset and operating lease liability, noncurrent, respectively, on the condensed consolidated balance sheet as of March 31, 2020. The lease has an initial term of five years with the option to renew for an additional five years at the end of the initial lease term. Total minimum lease payments under the initial term are $2.1 million. For the initial measurement of the present value of the lease payments associated with this lease, the Company used its incremental borrowing rate, which is a collateralized rate and approximates the rate at which the Company could borrow, on a secured basis for a similar term, an amount equal to its lease payments in a similar economic environment.
The Company includes lease payments associated with renewal options in its operating lease asset and liability only when it becomes reasonably certain that the Company will exercise the renewal option. The Company has not included renewal options for any of its operating leases in its determination of lease liabilities as of March 31, 2020.

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Note 6—Commitments and Contingencies
Letters of Credit
In conjunction with the operating lease agreements, as of March 31, 2020 and December 31, 2019, the Company had three irrevocable letters of credit outstanding in the aggregate amounts of $1.0 million and $0.8 million, respectively. No amounts had been drawn against these letters of credit as of March 31, 2020 and December 31, 2019.
Contingencies
The Company accrues contingent liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. From time to time in the normal course of business, various claims and litigation have been asserted or commenced. Due to uncertainties inherent in litigation and other claims, the Company can give no assurance that it will prevail in any such matters, which could subject the Company to significant liability or damages. Any claims or litigation could have an adverse effect on the Company’s business, financial position, results of operations, or cash flows in or following the period that claims or litigation are resolved.
As of March 31, 2020 and December 31, 2019, the Company was not a party to any material legal proceedings or claims, nor is the Company aware of any pending or threatened litigation or claims that could reasonably be expected to have a material adverse effect on its business, operating results, cash flows, or financial condition. Accordingly, the Company has determined that the existence of a material loss as of these dates is neither probable nor reasonably possible.
Indemnification
The Company has indemnification agreements with its officers, directors, and certain key employees to indemnify them while they are serving in good faith in their respective positions. In the ordinary course of business, the Company enters into contractual arrangements under which it agrees to provide indemnification of varying scope and terms to clients, business partners, vendors, and other parties, including, but not limited to, losses arising out of the Company’s breach of such agreements, claims related to potential data or information security breaches, intellectual property infringement claims made by third parties, and other liabilities relating to or arising from the Company’s products and services or its acts or omissions. In addition, subject to the terms of the applicable agreement, as part of the Company’s Upwork Enterprise offering, the Company indemnifies clients that subscribe to worker classification services for losses arising from worker misclassification. It is not possible to determine the maximum potential loss under these indemnification provisions due to the Company’s limited history of prior indemnification claims and the facts and circumstances involved in each particular provision.

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Note 7—Debt
The following table presents the carrying value of the Company’s debt obligations as of March 31, 2020 and December 31, 2019 (in thousands):
 March 31, 2020December 31, 2019
First Term Loan—18 months of interest-only payments ended in March 2019 followed by 36 equal monthly installments of principal plus interest, maturing March 2022; interest at prime plus 0.25% per annum
$10,000  $11,250  
Second Term Loan—17 months of interest-only payments ended in March 2019 followed by 42 equal monthly installments of principal plus interest, maturing September 2022; interest at prime plus 0.25% per annum
6,428  7,071  
Line of credit—interest at prime with accrued interest due monthly; matures September 202015,000  —  
Total debt31,428  18,321  
Less: unamortized debt discount issuance costs(25) (38) 
Balance31,403  18,283  
Debt, current(22,589) (7,584) 
Debt, noncurrent$8,814  $10,699  
Weighted-average interest rate4.31 %6.93 %
Under the Company’s Loan and Security Agreement, as amended (the “Loan Agreement”), the aggregate amount of the facility is up to $49.0 million, consisting of a term loan in the original principal amount of $15.0 million (the “First Term Loan”), a term loan in the original principal amount of $9.0 million (the “Second Term Loan” and, together with the First Term Loan, the “Term Loans”), and a revolving line of credit, which permits borrowings of up to $25.0 million subject to customary conditions. Among other things, the Company may only borrow funds under the revolving line of credit if, after giving effect thereto, total borrowings under the line of credit do not exceed a specified percentage of eligible trade and client accounts receivable. The Company has granted its lender first-priority liens against substantially all of its assets, as collateral, excluding the Company’s intellectual property (but including proceeds therefrom) and the funds and assets held by the Company’s subsidiary, Upwork Escrow Inc. The Company has also agreed to a negative pledge on its intellectual property. The Loan Agreement also requires that the Company maintain an adjusted quick ratio of 1.75. The Loan Agreement also includes a restrictive covenant on dividend payments other than dividends paid solely in common stock. The Company was in compliance with its covenants under the Loan Agreement as of March 31, 2020 and December 31, 2019.
As a result of the uncertainty caused by the COVID-19 pandemic, the Company drew down $15.0 million under the revolving line of credit in March 2020.
During the three months ended March 31, 2020, the Company repaid $1.3 million related to the First Term Loan and $0.6 million related to the Second Term Loan. Pursuant to the terms of the Loan Agreement, the Company commenced repayment on the Term Loans in April 2019; accordingly, there were no repayments during the three months ended March 31, 2019.

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Note 8—Net Loss per Share
The following table sets forth the computation of the Company’s basic and diluted net loss per share for the periods presented (in thousands, except share and per share data):
 Three Months Ended March 31,
 20202019
Numerator:  
Net loss$(10,021) $(5,160) 
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted114,118,958  106,639,079  
Net loss per share, basic and diluted$(0.09) $(0.05) 

The following potentially dilutive shares were excluded from the computation of diluted net loss per share because including them would have been anti-dilutive:
 As of March 31,
 20202019
Options to purchase common stock13,181,714  23,304,831  
Common stock issuable upon exercise of common stock warrants450,000  898,331  
Common stock issuable upon vesting of restricted stock units6,132,421  1,087,759  
Common stock issuable in connection with employee stock purchase plan1,454,352  —  
Total21,218,487  25,290,921  


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Note 9—Segment and Geographical Information
The Company operates as one operating and reportable segment for purposes of allocating resources and evaluating financial performance.
The following table sets forth total revenue by type of service for the periods presented (in thousands):
Three Months Ended March 31,
20202019
Marketplace$74,782  $60,455  
Managed services8,414  8,021  
Total revenue$83,196  $68,476  

The Company generates its revenue from freelancers and clients. The following table sets forth total revenue by geographic area based on the billing address of its freelancers and clients for the periods presented (in thousands):
Three Months Ended March 31,
20202019
Freelancers
United States$13,997  $11,769  
India7,473  6,564  
Philippines5,137  4,531  
Rest of world24,355  21,478  
Total freelancers50,962  44,342  
Clients
United States22,959  17,674  
Rest of world9,275  6,460  
Total clients32,234  24,134  
Total revenue$83,196  $68,476  

Substantially all of the Company’s long-lived assets were located in the United States as of March 31, 2020 and December 31, 2019.

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Note 10—Subsequent Events
As a result of the uncertainty caused by the COVID-19 pandemic, the Company drew down an additional $3.0 million under the revolving line of credit in April 2020.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.
You should read the following discussion and analysis of our financial condition and results of operations together with the section titled “Risk Factors” and the condensed consolidated financial statements and related notes included elsewhere in this Quarterly Report. This discussion contains forward-looking statements based upon current expectations that involve risks and uncertainties, as well as assumptions that may never materialize or that may be proven incorrect. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors, including those discussed in the sections titled “Special Note Regarding Forward-Looking Statements” and “Risk Factors,” and in other parts of this Quarterly Report.
Overview
We operate the largest online talent solution that enables businesses to find and work with highly-skilled independent professionals, as measured by gross services volume (“GSV”). GSV represents the total amount that clients spend on our marketplace offerings and our managed services offering as well as additional fees we charge to both clients and freelancers for other services. Freelancers are an increasingly sought-after, critical, and expanding segment of the global workforce. We define freelancers as users of our platform that advertise and provide services to clients through our platform, and we define clients as users of our platform that work with freelancers through our platform. The freelancers on our platform include independent professionals and agencies of varying sizes. The clients on our platform range in size from small businesses to Fortune 500 companies. Our platform enabled $0.6 billion and $0.5 billion of GSV in over 180 countries for the three months ended March 31, 2020 and 2019, respectively. For purposes of determining countries where we enable GSV, we include both the countries in which the clients that paid for the applicable services are located, as well as the countries in which the freelancers that provided those services are located.
We generate a majority of our revenue from fees charged to freelancers. We also generate revenue through fees charged to clients for transacting payments through our platform and fees for premium offerings, foreign currency exchange fees, and Upwork Payroll service fees. In addition, we provide a managed services offering where we engage freelancers to complete projects, directly invoice the client, and assume responsibility for work performed. For the three months ended March 31, 2020 and 2019, we generated total revenue of $83.2 million and $68.5 million, respectively, representing a period-over-period increase of 21%.
For the three months ended March 31, 2020, we generated a net loss of $10.0 million and adjusted EBITDA loss of $1.0 million, compared to a net loss of $5.2 million and adjusted EBITDA of $0.8 million for the three months ended March 31, 2019. During the three months ended March 31, 2020, we incurred $1.6 million related to our changes in organizational structure to better align with our business strategies and streamline the delivery of our end-to-end user experiences. Excluding the impact of these initiatives, our adjusted EBITDA loss of $1.0 million would be adjusted EBITDA of $0.6 million for the three months ended March 31, 2020. Adjusted EBITDA is a financial measure that is not prepared in accordance with, and is not an alternative to, financial measures prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). See the section titled “Key Financial and Operational Metrics—Non-GAAP Financial Measures” below for a definition of adjusted EBITDA and information regarding our use of adjusted EBITDA and a reconciliation of adjusted EBITDA to net loss, the most directly comparable financial measure prepared under U.S. GAAP.
Impact of the COVID-19 Pandemic on Our Business
In March 2020, the World Health Organization declared the outbreak of COVID-19 to be a pandemic, which continues to spread throughout the United States and the world, and has resulted in authorities implementing numerous measures to contain the virus, including travel bans and restrictions, shelter-in-place orders, and business limitations and shutdowns. To support the health and well-being of our employees, clients, partners, and communities, all of our employees are currently working remotely. With our unique, remote-based business model, the COVID-19 pandemic has not impacted our clients’ ability to engage highly-skilled independent professionals on our platform to complete short- and long-term projects.
Although the COVID-19 pandemic did not have a material adverse impact on our financial results for the first quarter of 2020, the rapidly changing market and economic conditions caused by the COVID-19 pandemic has disrupted the businesses of many of our clients. We began seeing the impact of the pandemic on our results beginning in the second week of March, when we began to experience a decline in GSV. We believe that this

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decline contributed to a reduction in revenue growth by approximately 1% year-over-year during the three months ended March 31, 2020. While we have seen increased spend from some of our existing clients as a result of the COVID-19 pandemic, the revenue from this increased spend may not fully offset the impact of lower client acquisition resulting from the pandemic. We derive a substantial portion of our GSV and revenue from small- and medium-sized business clients and the pandemic and related effects may significantly affect demand for our products and services from these clients in particular, although we expect that economic conditions may affect spend from clients of all sizes. As a result, we expect revenue in the second quarter will be lower than we initially anticipated at the beginning of 2020, specifically as a result of a decline in client spend on our platform from our clients that have been impacted by the COVID-19 pandemic.
In light of the COVID-19 pandemic and the global macroeconomic downturn and their effect on client spend on our platform, we have identified certain opportunities to prioritize our advertising and marketing efforts in order to reach those new and existing clients seeking to engage with remote freelancers in light of the prevailing shelter-in-place orders or similar measures. In addition, we may also implement a reduction or elimination of certain fees normally charged to users or may implement other promotions in an effort to support those affected by the COVID-19 pandemic or those seeking to engage freelancers for the first time, and any such changes may result in a reduction in revenue. We are continuously evaluating the nature and extent to which the ongoing COVID-19 pandemic will continue to have on our business, operating results, and financial condition.
While we have not incurred significant disruptions to our business thus far from the COVID-19 pandemic, at this time, we are unable to fully assess the aggregate impact it will have on our business due to various uncertainties, which include, but are not limited to, the duration of the pandemic, actions that may be taken by governmental authorities, the impact to the businesses of our clients, and other factors identified in Part II, Item 1A “Risk Factors” in this Quarterly Report, including the risk factor titled “Our business is experiencing, and is expected to continue to experience, an adverse impact from the ongoing COVID-19 pandemic.”
Key Financial and Operational Metrics
We monitor the following key financial and operational metrics to evaluate our business, measure our performance, identify trends affecting our business, formulate business plans, and make strategic decisions. Our key metrics were as follows as of or for the periods presented:
 Three Months Ended March 31,
 20202019
(in thousands)
GSV$559,493  $486,647  
Marketplace revenue74,782  60,455  
Marketplace take rate13.6 %12.6 %
Net loss(10,021) (5,160) 
Adjusted EBITDA (1)
(1,018) 814  
(1)Adjusted EBITDA is not prepared in accordance with, and is not an alternative to, financial measures prepared in accordance with U.S. GAAP. See “Key Financial and Operational Metrics—Non-GAAP Financial Measures” below for a definition of adjusted EBITDA and for information regarding our use of adjusted EBITDA and a reconciliation of adjusted EBITDA to net loss, the most directly comparable financial measure prepared under U.S. GAAP.
 As of March 31,
 20202019
(in thousands, except percentages)
Core clients128.8  110.6  
Client spend retention102 %107 %

As discussed below with respect to each key metric, we believe these key financial and operational metrics are useful to evaluate period-over-period comparisons of our business and in understanding our operating results, and

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management uses these metrics to track our performance. GSV represents the total amount that clients spend on our marketplace offerings and our managed services offering, as well as additional fees we charge to both clients and freelancers for other services. We believe that GSV is an important metric, as it represents the overall amount of business transacted through our platform, which in turn is a key driver of our financial results. We believe our marketplace revenue, which represents a majority of our revenue, will grow as GSV grows, although they could grow at different rates. We evaluate the correlation between marketplace revenue and GSV by measuring marketplace take rate, which is calculated as marketplace revenue divided by marketplace GSV. We use the number of core clients to track the number of clients that we consider are actively using our platform, and this metric in any given period drives both GSV and client spend retention. Similarly, client spend retention impacts the growth rate of GSV. For information on how we define core clients and how we calculate client spend retention and marketplace take rate, see “—Core Clients,” “—Client Spend Retention,” and “—Marketplace Take Rate,” respectively, below. For a discussion of limitations in the measurement of our key financial and operational metrics, see “Risk Factors—We track certain performance metrics with internal tools and do not independently verify such metrics. Certain of our performance metrics are subject to inherent challenges in measurement, and real or perceived inaccuracies in such metrics may harm our reputation and negatively affect our business” in Part II, Item 1A of this Quarterly Report.

Core Clients
We define a core client as a client that has spent in the aggregate at least $5,000 since it began using our platform and also had spend-activity on our platform during the 12 months preceding the date of measurement. We believe that aggregate spend of at least $5,000 indicates that the client is actively using our platform. Historically, these core clients have been more likely to continue using our platform. We continue to see businesses of all sizes use our platform in a recurring way for larger, more complex projects, and we expect the number of core clients to continue to increase over time. Over the last two years, we have added between approximately 4,000 and 5,000 additional core clients per quarter. We believe we will continue to add approximately 4,000 core clients per quarter in the coming quarters, but the number of core clients could vary quarter by quarter depending, in part, on the extent to which the COVID-19 pandemic impacts our business, the businesses of our clients, and other factors identified in Part II, Item 1A “Risk Factors” in this Quarterly Report, including the risk factor titled “Our business is experiencing, and is expected to continue to experience, an adverse impact from the ongoing COVID-19 pandemic.” We believe that the number of core clients is a key indicator of our growth and the overall health of our business because core clients are a primary driver of GSV and, therefore, marketplace revenue.
Gross Services Volume
GSV includes both client spend and additional fees charged for other services. Client spend, which we define as the total amount that clients spend on both our marketplace offerings and our managed services offering, is the primary component of GSV. GSV also includes additional fees charged to both clients and freelancers for other services, such as freelancer memberships, purchases of “Connects” (virtual tokens that allow freelancers to bid on projects on our platform), freelancer withdrawals, and foreign currency exchange.
GSV is an important metric because it represents the amount of business transacted through our platform. Our marketplace revenue is primarily comprised of the service fees paid by freelancers as a percentage of the total amount freelancers charge clients for services accessed through our platform. Therefore, marketplace revenue is correlated to GSV, and we believe that our marketplace revenue will grow as GSV grows, although they could grow at different rates. For a discussion of how we measure and evaluate the correlation between marketplace revenue and GSV, see “—Marketplace Take Rate” below. Growth in the number of core clients and increased client spend retention are the primary drivers of GSV growth, and we expect the client spend retention trends discussed in “—Client Spend Retention,” below, to affect the rate at which GSV grows. We expect our GSV to fluctuate between periods due to a number of factors, including the volume of projects that are posted by clients on our platform as well as the characteristics of those projects, such as size, duration, pricing, and other factors, including the current COVID-19 pandemic, the impact of the pandemic on our clients’ businesses, and the timing of the removal of restriction-in-place orders, both globally and in localized areas.

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Client Spend Retention
We calculate client spend retention by dividing our recurring client spend by our base client spend. We define base client spend as the aggregate client spend from all clients during the four quarters ended one year prior to the date of measurement. We define our recurring client spend as the aggregate client spend during the four quarters ended on the date of measurement from the same clients included in our measure of base client spend. Our business is recurring in nature even though clients are not contractually required to spend on a recurring basis. We believe that client spend retention is a key indicator of the value of our platform and the overall health of our business because it impacts the growth rate of GSV, and, therefore, marketplace revenue.
Long-term and recurring use by freelancers and clients are the primary drivers of growth in our marketplace and give us increased revenue visibility. While continued use of our platform by freelancers is a factor that impacts our ability to attract and retain clients, our platform currently has a significant surplus of freelancers in relation to the number of clients actively engaging freelancers. This surplus has increased as a result of the COVID-19 pandemic, as we have experienced an increase in the number of independent professionals applying to join our platform. As a result of this surplus, we primarily focus our efforts on retaining client spend and acquiring new clients, as opposed to acquiring new freelancers and retaining existing freelancers. Moreover, we generate revenue when clients engage and pay freelancers, therefore, our key metrics and operating results are directly impacted by client spend. On the other hand, the number of freelancers retained between periods is merely one of many factors that may impact client spend in a particular period and is not a primary driver of our key metrics and operating results. For these reasons, we do not calculate or consider freelancer retention metrics in evaluating our business.
As of March 31, 2020, client spend retention was 102%, down from 107% as of March 31, 2019. We believe that this decline in client spend retention—from its historically highest levels in 2018 and the first quarter of 2019—follows from the acceleration in client spend retention that occurred subsequent to the launch of our U.S.-to-U.S. domestic marketplace offering in the second half of 2017, which initiated a substantial increase in the average hourly earnings rate of freelancers. These hourly rates stabilized over the course of 2019, causing the reduction in retention rate. We believe this trend will continue in 2020, and we expect the long-term historical performance of this metric to range between 98% and 100%. Moreover, following the launch of our U.S.-to-U.S. domestic marketplace offering, an increasing proportion of U.S. clients are engaging primarily U.S. freelancers. We are observing that U.S. clients that engage solely U.S. freelancers post higher-budget projects and pay higher rates initially but, to date, have exhibited lower client spend retention than the rest of our clients. As we acquire more mid-market, large enterprise, and global clients in current and future periods, we expect them to continue to make positive contributions to our client spend retention in future years. For these and other reasons, client spend retention will continue to vary from period to period due to client size and spending behavior, among other factors, including the impact of the ongoing COVID-19 pandemic, the related shelter-in-place orders, and the resulting macroeconomic downturn on the businesses and spending behavior of our clients.
Marketplace Revenue
Marketplace revenue, which represents the majority of our revenue, consists of revenue derived from our Upwork Basic, Plus, Business, and Enterprise offerings, and our other premium offerings. We generate marketplace revenue from both freelancers and clients. Our marketplace revenue is primarily comprised of the service fees paid by freelancers as a percentage of the total amount freelancers charge clients for services accessed through our platform, and to a lesser extent, payment processing and administration fees charged to clients. We also generate marketplace revenue from fees for premium offerings, freelancer membership fees, Connects purchases, and other services, such as foreign currency exchange fees and Upwork Payroll service fees.
Marketplace revenue is an important metric because it is the primary driver of our business model, and we believe it provides greater comparability to other online marketplaces. The growth rate of marketplace revenue fluctuates in relation to the growth rate of GSV. Therefore, marketplace revenue is correlated to GSV, and we believe that our marketplace revenue will grow as GSV grows, although they could grow at different rates. We expect our marketplace revenue growth rates to continue to vary from period to period due to a variety of other factors such as the impact of the COVID-19 pandemic on the businesses and spending behavior of our current and prospective clients; the number of Sundays (i.e., the day we bill and recognize revenue for the majority of our freelancer service fees each week) in any given quarter, or the number of Mondays (i.e., the day we bill and recognize revenue for a substantial portion of our client fees each week); the lapping of significant launches of new products, pricing

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changes, and other monetization efforts; the performance of client spend retention; and the ability of the recent and continued investment in our enterprise sales team to accelerate the acquisition of, and achieve increased spend from, Upwork Enterprise and Business clients, and the timing of those results.
Marketplace Take Rate
Marketplace take rate measures the correlation between marketplace revenue and GSV and is calculated by dividing marketplace revenue by marketplace GSV. Marketplace take rate is an important metric because it is the key indicator of how well we monetize spend on our platform from our Upwork Basic, Plus, Business, and Enterprise offerings, and other premium offerings. We expect our marketplace take rate to vary from period to period as marketplace revenue and GSV vary as a result of a variety of factors, such as the number of Sundays (i.e., the day we bill and recognize revenue for the majority of our freelancer service fees each week) in any given quarter, or the number of Mondays (i.e., the day we bill and recognize revenue for a substantial portion of our client fees each week); pricing changes; the ability of the recent and continued investment in our enterprise sales team to accelerate the acquisition of, and achieve increased spend from, our Upwork Enterprise and Business clients and the timing of those results; and ongoing efforts to improve processes on our platform, including, but not limited to, project proposals and purchases of Connects.
Non-GAAP Financial Measures
In addition to our results determined in accordance with U.S. GAAP, adjusted EBITDA is a non-GAAP measure that we believe is useful in evaluating our operating performance.
We define adjusted EBITDA as net income (loss) adjusted for stock-based compensation expense, depreciation and amortization, interest expense, other (income) expense, net, income tax (benefit) provision, and, if applicable, other non-cash transactions. Adjusted EBITDA is not prepared in accordance with, and is not an alternative to, financial measures prepared in accordance with U.S. GAAP.
The following table presents a reconciliation of net loss, the most directly comparable financial measure prepared in accordance with U.S. GAAP, to adjusted EBITDA for each of the periods indicated (in thousands):
 Three Months Ended March 31,
 20202019
Net Loss$(10,021) $(5,160) 
Add back (deduct):
Stock-based compensation expense5,537  4,295  
Depreciation and amortization2,308  1,532  
Interest expense230  373  
Other (income) expense, net731  (479) 
Income tax provision9  1  
Tides Foundation common stock warrant expense188  252  
Adjusted EBITDA$(1,018)