Document
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
____________________________________________ 
FORM 10-Q
____________________________________________ 
(Mark One)
x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2018
or
o 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: 001-35551
____________________________________________ 
FACEBOOK, INC.
(Exact name of registrant as specified in its charter)
____________________________________________ 
Delaware
20-1665019
(State or other jurisdiction of incorporation or organization)
(I.R.S. Employer Identification Number)
1601 Willow Road, Menlo Park, California 94025
(Address of principal executive offices and Zip Code)
(650) 543-4800
(Registrant's telephone number, including area code)
 ____________________________________________
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 (Exchange Act) 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  x    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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  x    No  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See definition of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer
 
x
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  x
Indicate the number of shares outstanding of each of the issuer's classes of Common Stock, as of the latest practicable date.
Class
Number of Shares Outstanding
Class A Common Stock $0.000006 par value
2,402,466,211 shares outstanding as of October 26, 2018
Class B Common Stock $0.000006 par value
471,321,401 shares outstanding as of October 26, 2018



FACEBOOK, INC.
TABLE OF CONTENTS
 
 
 
Page No.
 
 
 
 
 
 
 
 
 
Item 1.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 2.
 
 
 
Item 3.
 
 
 
Item 4.
 
 
 
 
 
Item 1.
 
 
 
Item 1A.
 
 
 
Item 2.
 
 
 
Item 6.
 
 


2


NOTE ABOUT FORWARD-LOOKING STATEMENTS
This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this Quarterly Report on Form 10-Q other than statements of historical fact, including statements regarding our future results of operations and financial position, our business strategy and plans, and our objectives for future operations, are forward-looking statements. The words "believe," "may," "will," "estimate," "continue," "anticipate," "intend," "expect," and similar expressions are intended to identify forward-looking statements. We have based these forward-looking statements largely on our current expectations and projections 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 on Form 10-Q. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management 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 trends discussed in this Quarterly Report on Form 10-Q may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.
We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements, except as required by law. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements.
Unless expressly indicated or the context requires otherwise, the terms "Facebook," "company," "we," "us," and "our" in this document refer to Facebook, Inc., a Delaware corporation, and, where appropriate, its wholly owned subsidiaries. The term "Facebook" may also refer to our products, regardless of the manner in which they are accessed. For references to accessing Facebook on the "web" or via a "website," such terms refer to accessing Facebook on personal computers. For references to accessing Facebook on "mobile," such term refers to accessing Facebook via a mobile application or via a mobile-optimized version of our website such as m.facebook.com, whether on a mobile phone or tablet.

3


LIMITATIONS OF KEY METRICS AND OTHER DATA
The numbers for our key metrics, which include our daily active users (DAUs), monthly active users (MAUs), and average revenue per user (ARPU), are calculated using internal company data based on the activity of user accounts. While these numbers are based on what we believe to be reasonable estimates of our user base for the applicable period of measurement, there are inherent challenges in measuring usage of our products across large online and mobile populations around the world. In addition, we are continually seeking to improve our estimates of our user base, and such estimates may change due to improvements or changes in our methodology.
We regularly evaluate these metrics to estimate the number of "duplicate" and "false" accounts among our MAUs. A duplicate account is one that a user maintains in addition to his or her principal account. We divide "false" accounts into two categories: (1) user-misclassified accounts, where users have created personal profiles for a business, organization, or non-human entity such as a pet (such entities are permitted on Facebook using a Page rather than a personal profile under our terms of service); and (2) undesirable accounts, which represent user profiles that we determine are intended to be used for purposes that violate our terms of service, such as spamming. The estimates of duplicate and false accounts are based on an internal review of a limited sample of accounts, and we apply significant judgment in making this determination. For example, to identify duplicate accounts we use data signals such as similar IP addresses or user names, and to identify false accounts we look for names that appear to be fake or other behavior that appears inauthentic to the reviewers. Our estimates may change as our methodologies evolve, including through the application of new data signals or technologies, which may allow us to identify previously undetected duplicate or false accounts and may improve our ability to evaluate a broader population of our users. Duplicate and false accounts are very difficult to measure at our scale, and it is possible that the actual number of duplicate and false accounts may vary significantly from our estimates.
In the fourth quarter of 2017, we estimate that duplicate accounts may have represented approximately 10% of our worldwide MAUs. We believe the percentage of duplicate accounts is meaningfully higher in developing markets such as India, Indonesia, and the Philippines, as compared to more developed markets. In the fourth quarter of 2017, we estimate that false accounts may have represented approximately 3-4% of our worldwide MAUs. Our estimation of false accounts can vary as a result of episodic spikes in the creation of such accounts, which we have seen originate more frequently in specific countries such as Indonesia, Turkey, and Vietnam. From time to time, we may make product changes or take other actions to reduce the number of duplicate or false accounts among our users, which may also reduce our DAU and MAU estimates in a particular period.
Our data limitations may affect our understanding of certain details of our business. For example, while user-provided data indicates a decline in usage among younger users, this age data is unreliable because a disproportionate number of our younger users register with an inaccurate age. Accordingly, our understanding of usage by age group may not be complete.
In addition, our data regarding the geographic location of our users is estimated based on a number of factors, such as the user's IP address and self-disclosed location. These factors may not always accurately reflect the user's actual location. For example, a user may appear to be accessing Facebook from the location of the proxy server that the user connects to rather than from the user's actual location. The methodologies used to measure user metrics may also be susceptible to algorithm or other technical errors. Our estimates for revenue by user location and revenue by user device are also affected by these factors.
We regularly review our processes for calculating these metrics, and from time to time we may discover inaccuracies in our metrics or make adjustments to improve their accuracy, including adjustments that may result in the recalculation of our historical metrics. We believe that any such inaccuracies or adjustments are immaterial unless otherwise stated. We intend to disclose our estimates of the number of duplicate and false accounts among our MAUs on an annual basis. In addition, our DAU and MAU estimates will differ from estimates published by third parties due to differences in methodology.
The numbers of DAUs and MAUs discussed in this Quarterly Report on Form 10-Q, as well as ARPU, do not include Instagram, WhatsApp, or Oculus users unless they would otherwise qualify as such users, respectively, based on their other activities on Facebook. In addition, other user engagement metrics included herein do not include Instagram, WhatsApp, or Oculus unless otherwise specifically stated.

4


PART I—FINANCIAL INFORMATION
Item 1.
Financial Statements
FACEBOOK, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In millions, except for number of shares and par value)
(Unaudited)
 
September 30,
2018
 
December 31,
2017
Assets
 
 
 
Current assets:
 
 
 
Cash and cash equivalents
$
9,637

 
$
8,079

Marketable securities
31,569

 
33,632

Accounts receivable, net of allowances of $207 and $189 as of September 30, 2018 and December 31, 2017, respectively
6,058

 
5,832

Prepaid expenses and other current assets
1,883

 
1,020

Total current assets
49,147

 
48,563

Property and equipment, net
21,112

 
13,721

Intangible assets, net
1,451

 
1,884

Goodwill
18,304

 
18,221

Other assets
2,438

 
2,135

Total assets
$
92,452

 
$
84,524

 
 
 
 
Liabilities and stockholders' equity
 
 
 
Current liabilities:
 
 
 
Accounts payable
$
590

 
$
380

Partners payable
502

 
390

Accrued expenses and other current liabilities
4,255

 
2,892

Deferred revenue and deposits
115

 
98

Total current liabilities
5,462

 
3,760

Other liabilities
6,648

 
6,417

Total liabilities
12,110

 
10,177

Commitments and contingencies

 

Stockholders' equity:
 
 
 
Common stock, $0.000006 par value; 5,000 million Class A shares authorized, 2,402 million and 2,397 million shares issued and outstanding, as of September 30, 2018 and December 31, 2017, respectively; 4,141 million Class B shares authorized, 471 million and 509 million shares issued and outstanding, as of September 30, 2018 and December 31, 2017, respectively.

 

Additional paid-in capital
42,352

 
40,584

Accumulated other comprehensive loss
(777
)
 
(227
)
Retained earnings
38,767

 
33,990

Total stockholders' equity
80,342

 
74,347

Total liabilities and stockholders' equity
$
92,452

 
$
84,524

See Accompanying Notes to Condensed Consolidated Financial Statements.

5


FACEBOOK, INC.
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(In millions, except per share amounts)
(Unaudited) 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Revenue
$
13,727

 
$
10,328

 
$
38,924

 
$
27,681

Costs and expenses:
 
 
 
 
 
 
 
Cost of revenue
2,418

 
1,448

 
6,559

 
3,843

Research and development
2,657

 
2,052

 
7,418

 
5,805

Marketing and sales
1,928

 
1,170

 
5,379

 
3,351

General and administrative
943

 
536

 
2,475

 
1,831

Total costs and expenses
7,946

 
5,206

 
21,831

 
14,830

Income from operations
5,781

 
5,122

 
17,093

 
12,851

Interest and other income, net
131

 
114

 
297

 
281

Income before provision for income taxes
5,912

 
5,236

 
17,390

 
13,132

Provision for income taxes
775

 
529

 
2,160

 
1,467

Net income
$
5,137

 
$
4,707

 
$
15,230

 
$
11,665

Less: Net income attributable to participating securities

 
3

 
1

 
13

Net income attributable to Class A and Class B common stockholders
$
5,137

 
$
4,704

 
$
15,229

 
$
11,652

Earnings per share attributable to Class A and Class B common stockholders:
 
 
 
 
 
 
 
Basic
$
1.78

 
$
1.62

 
$
5.26

 
$
4.02

Diluted
$
1.76

 
$
1.59

 
$
5.20

 
$
3.95

Weighted average shares used to compute earnings per share attributable to Class A and Class B common stockholders:
 
 
 
 
 
 
 
Basic
2,885

 
2,904

 
2,895

 
2,898

Diluted
2,913

 
2,956

 
2,931

 
2,954

Share-based compensation expense included in costs and expenses:
 
 
 
 
 
 
 
Cost of revenue
$
72

 
$
47

 
$
202

 
$
128

Research and development
748

 
776

 
2,347

 
2,233

Marketing and sales
133

 
114

 
380

 
330

General and administrative
87

 
73

 
251

 
218

Total share-based compensation expense
$
1,040

 
$
1,010

 
$
3,180

 
$
2,909

See Accompanying Notes to Condensed Consolidated Financial Statements.


6


FACEBOOK, INC.
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In millions)
(Unaudited) 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Net income
$
5,137

 
$
4,707

 
$
15,230

 
$
11,665

Other comprehensive income (loss):
 
 
 
 
 
 
 
Change in foreign currency translation adjustment, net of tax
(44
)
 
174

 
(321
)
 
480

Change in unrealized gain/loss on available-for-sale investments and other, net of tax
(46
)
 
(4
)
 
(229
)
 
23

Comprehensive income
$
5,047

 
$
4,877

 
$
14,680

 
$
12,168

See Accompanying Notes to Condensed Consolidated Financial Statements.

7



FACEBOOK, INC.
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
(In millions)
(Unaudited) 
 
Three Months Ended September 30, 2018
 
Three Months Ended September 30, 2017
 
Class A and Class B Common Stock
 
Additional
Paid-In Capital
 
Accumulated Other Comprehensive Loss
 
Retained Earnings
 
Total Stockholders' Equity
 
Class A and Class B Common Stock
 
Additional Paid-In Capital
 
Accumulated Other Comprehensive Loss
 
Retained Earnings
 
Total Stockholders' Equity
 
Shares
 
Par 
Value
 
 
Shares
 
Par 
Value
 
Balances at beginning of period
2,891

 
$

 
$
41,832

 
$
(687
)
 
$
38,237

 
$
79,382

 
2,903

 
$

 
$
39,291

 
$
(370
)
 
$
27,560

 
$
66,481

Impact of the adoption of new accounting pronouncement

 

 

 
(31
)
 
31

 

 

 

 

 

 

 

Issuance of common stock
12

 

 
3

 

 

 
3

 
13

 

 
323

 

 

 
323

Shares withheld related to net share settlement
(5
)
 

 
(523
)
 

 
(382
)
 
(905
)
 
(6
)
 

 
(425
)
 

 
(428
)
 
(853
)
Share-based compensation, related to employee share-based awards

 

 
1,040

 

 

 
1,040

 

 

 
1,010

 

 

 
1,010

Share repurchases
(24
)
 

 

 

 
(4,256
)
 
(4,256
)
 
(4
)
 

 

 

 
(630
)
 
(630
)
Other comprehensive (loss) income

 

 

 
(59
)
 

 
(59
)
 

 

 

 
170

 

 
170

Net income

 

 

 

 
5,137

 
5,137

 

 

 

 

 
4,707

 
4,707

Balances at end of period
2,874

 
$

 
$
42,352

 
$
(777
)
 
$
38,767

 
$
80,342

 
2,906

 
$

 
$
40,199

 
$
(200
)
 
$
31,209

 
$
71,208

 
Nine Months Ended September 30, 2018
 
Nine Months Ended September 30, 2017
 
Class A and Class B Common Stock
 
Additional
Paid-In Capital
 
Accumulated Other Comprehensive Loss
 
Retained Earnings
 
Total Stockholders' Equity
 
Class A and Class B Common Stock
 
Additional
Paid-In Capital
 
Accumulated Other Comprehensive Loss
 
Retained Earnings
 
Total Stockholders' Equity
 
Shares
 
Par 
Value
 
 
Shares
 
Par 
Value
 
Balances at beginning of period
2,906

 
$

 
$
40,584

 
$
(227
)
 
$
33,990

 
$
74,347

 
2,892

 
$

 
$
38,227

 
$
(703
)
 
$
21,670

 
$
59,194

Impact of the adoption of new accounting pronouncements

 

 

 
(31
)
 
172

 
141

 

 

 

 

 

 

Issuance of common stock
37

 

 
11

 

 

 
11

 
38

 

 
335

 

 

 
335

Shares withheld related to net share settlement
(15
)
 

 
(1,423
)
 

 
(1,240
)
 
(2,663
)
 
(17
)
 

 
(1,272
)
 

 
(1,088
)
 
(2,360
)
Share-based compensation, related to employee share-based awards

 

 
3,180

 

 

 
3,180

 

 

 
2,909

 

 

 
2,909

Share repurchases
(54
)
 

 

 

 
(9,385
)
 
(9,385
)
 
(7
)
 

 

 

 
(1,038
)
 
(1,038
)
Other comprehensive (loss) income

 

 

 
(519
)
 

 
(519
)
 

 

 

 
503

 

 
503

Net income

 

 

 

 
15,230

 
15,230

 

 

 

 

 
11,665

 
11,665

Balances at end of period
2,874

 
$

 
$
42,352

 
$
(777
)
 
$
38,767

 
$
80,342

 
2,906

 
$

 
$
40,199

 
$
(200
)
 
$
31,209

 
$
71,208


8


FACEBOOK, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In millions)
(Unaudited)
 
Nine Months Ended September 30,
 
2018
 
2017
Cash flows from operating activities
 
 
 
Net income
$
15,230

 
$
11,665

Adjustments to reconcile net income to net cash provided by operating activities:
 
 
 
    Depreciation and amortization
3,090

 
2,172

    Share-based compensation
3,180

 
2,909

    Deferred income taxes
83

 
(152
)
    Other
19

 
18

Changes in assets and liabilities:
 
 
 
   Accounts receivable
(328
)
 
(235
)
   Prepaid expenses and other current assets
(889
)
 
(634
)
   Other assets
(99
)
 
130

   Accounts payable
88

 
(7
)
   Partners payable
116

 
22

   Accrued expenses and other current liabilities
1,044

 
95

   Deferred revenue and deposits
20

 
12

   Other liabilities
102

 
550

Net cash provided by operating activities
21,656

 
16,545

Cash flows from investing activities
 
 
 
Purchases of property and equipment
(9,614
)
 
(4,470
)
Purchases of marketable securities
(12,658
)
 
(20,410
)
Sales of marketable securities
11,104

 
7,649

Maturities of marketable securities
3,391

 
2,228

Acquisitions of businesses, net of cash acquired, and purchases of intangible assets
(137
)
 
(106
)
Other investing activities, net
(4
)
 
(6
)
Net cash used in investing activities
(7,918
)
 
(15,115
)
Cash flows from financing activities
 
 
 
Taxes paid related to net share settlement of equity awards
(2,663
)
 
(2,360
)
Repurchases of Class A common stock
(9,379
)
 
(1,018
)
Other financing activities, net
11

 
(14
)
Net cash used in financing activities
(12,031
)
 
(3,392
)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash
(167
)
 
192

Net increase (decrease) in cash, cash equivalents, and restricted cash
1,540

 
(1,770
)
Cash, cash equivalents, and restricted cash at beginning of the period
8,204

 
9,109

Cash, cash equivalents, and restricted cash at end of the period
$
9,744

 
$
7,339

 
 
 
 
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
 
 
 
Cash and cash equivalents
$
9,637

 
$
7,201

Restricted cash, included in prepaid expenses and other current assets
7

 
41

Restricted cash, included in other assets
100

 
97

Total cash, cash equivalents, and restricted cash
$
9,744

 
$
7,339


See Accompanying Notes to Condensed Consolidated Financial Statements.

9


FACEBOOK, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In millions)
(Unaudited)
 
Nine Months Ended September 30,
 
2018
 
2017
Supplemental cash flow data
 
 
 
Cash paid during the period for:
 
 
 
Income taxes, net
$
2,728

 
$
1,793

Non-cash investing and financing activities:
 
 
 
Net change in prepaids and liabilities related to property and equipment additions
$
613

 
$
540

Settlement of acquisition-related contingent consideration liability
$

 
$
102

Change in unsettled repurchases of Class A common stock
$
6

 
$
20

See Accompanying Notes to Condensed Consolidated Financial Statements.

10


FACEBOOK, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Note 1.
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 (GAAP) and applicable rules and regulations of the Securities and Exchange Commission regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2017.
The condensed consolidated balance sheet as of December 31, 2017 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by GAAP.
The condensed consolidated financial statements include the accounts of Facebook, 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 that are necessary to present fairly the results for the interim periods presented. Interim results are not necessarily indicative of the results for the full year ending December 31, 2018.
Use of Estimates
Conformity with GAAP requires the use of estimates and judgments that affect the reported amounts in the consolidated financial statements and accompanying notes. These estimates form the basis for judgments we make about the carrying values of our assets and liabilities, which are not readily apparent from other sources. We base our estimates and judgments on historical information and on various other assumptions that we believe are reasonable under the circumstances. GAAP requires us to make estimates and judgments in several areas, including, but not limited to, those related to income taxes, loss contingencies, fair value of acquired intangible assets and goodwill, collectability of accounts receivable, fair value of financial instruments, leases, useful lives of intangible assets and property and equipment, and revenue recognition. These estimates are based on management's knowledge about current events and expectations about actions we may undertake in the future. Actual results could differ materially from those estimates.
Recently Issued Accounting Pronouncements
In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2016-02, Leases (Topic 842) (ASU 2016-02), which generally requires companies to recognize operating and financing lease liabilities and corresponding right-of-use assets on the balance sheet. This guidance will be effective for us in the first quarter of 2019 on a modified retrospective basis applied either to the earliest comparative period or at transition and early adoption is permitted. We will adopt the new standard effective January 1, 2019. We have selected and implemented a lease accounting system, and are in the process of validating the accuracy of the reports generated from the system and finalizing our accounting policy and use of optional practical expedients. While we continue to evaluate the effect of adopting this guidance on our consolidated financial statements and related disclosures, we expect all of our leases including our operating leases, as disclosed in Note 8 — Commitments and Contingencies, will be subject to the new standard. We will recognize right-of-use assets and operating lease liabilities on our consolidated balance sheets upon adoption, which will increase our total assets and liabilities.
Recently Adopted Accounting Pronouncements
In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) Topic 605, Revenue Recognition (Topic 605). We adopted Topic 606 as of January 1, 2018 using the modified retrospective transition method applied to those contracts which were not completed as of January 1, 2018. See Revenue Recognition below for further details.

11


In October 2016, the FASB issued Accounting Standards Update No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers Other than Inventory (ASU 2016-16), which requires companies to recognize the income-tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs, rather than when the asset has been sold to an outside party. We adopted the new standard effective January 1, 2018, using the modified retrospective transition approach through a cumulative-effect adjustment to retained earnings as of the effective date, which was not material to our condensed consolidated financial statements.
In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18), which requires companies to include amounts generally described as restricted cash and restricted cash equivalents in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown on the statements of cash flows. We adopted the new standard effective January 1, 2018, using the retrospective transition approach. The reclassified restricted cash balances from investing activities to changes in cash, cash equivalents and restricted cash on the condensed consolidated statements of cash flows were not material for all periods presented.
In January 2017, the FASB issued Accounting Standards Update No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (ASU 2017-01), which revises the definition of a business and provides new guidance in evaluating when a set of transferred assets and activities is a business. We adopted the new standard effective January 1, 2018 on a prospective basis. The new standard did not have a material impact on our condensed consolidated financial statements.     
In February 2018, the FASB issued Accounting Standards Update No. 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02), which allows companies to reclassify stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act (Tax Act), from accumulated other comprehensive income to retained earnings. The new standard is effective for us beginning January 1, 2019, with early adoption permitted. We elected to early adopt the new standard at the beginning of the third quarter of 2018 using the aggregate portfolio approach. The amount of stranded tax effects that were reclassified from accumulated other comprehensive income to retained earnings was not material.
Revenue Recognition
    
On January 1, 2018, we adopted Topic 606, using the modified retrospective transition method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts have not been adjusted and continue to be reported in accordance with our historic accounting under Topic 605. The impact of adopting the new revenue standard was not material to our condensed consolidated financial statements and there was no adjustment to beginning retained earnings on January 1, 2018.
Under Topic 606, revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services.

We determine revenue recognition through the following steps:
identification of the contract, or contracts, with a customer;
identification of the performance obligations in the contract;
determination of the transaction price;
allocation of the transaction price to the performance obligations in the contract; and
recognition of revenue when, or as, we satisfy a performance obligation.
Revenue excludes sales and usage-based taxes where it has been determined that we are acting as a pass-through agent.
Revenue disaggregated by revenue source for the three and nine months ended September 30, 2018 and 2017, consists of the following (in millions):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017(1)
 
2018
 
2017(1)
Advertising
$
13,539

 
$
10,142

 
$
38,373

 
$
27,163

Payments and other fees
188

 
186

 
551

 
518

    Total revenue
$
13,727

 
$
10,328

 
$
38,924

 
$
27,681

(1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. 

12


Revenue disaggregated by geography, based on the billing address of our customer, consists of the following (in millions):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017(1)
 
2018
 
2017(1)
Revenue:
 
 
 
 
 
 
 
US & Canada(2)
$
6,325

 
$
4,823

 
$
17,750

 
$
12,972

Europe(3)
3,234

 
2,546

 
9,568

 
6,846

Asia-Pacific
3,007

 
2,042

 
8,253

 
5,424

Rest of World(3)
1,161

 
917

 
3,353

 
2,439

Total revenue
$
13,727

 
$
10,328

 
$
38,924

 
$
27,681

(1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. 
(2) United States revenue was $5.93 billion and $4.48 billion for the three months ended September 30, 2018 and 2017, respectively, and $16.62 billion and $12.06 billion for the nine months ended September 30, 2018 and 2017, respectively. 
(3) Europe includes Russia and Turkey, and Rest of World includes Africa, Latin America, and the Middle East.  
Advertising
Advertising revenue is generated by displaying ad products on Facebook, Instagram, Messenger, and third-party affiliated websites or mobile applications. Marketers pay for ad products either directly or through their relationships with advertising agencies and resellers, based on the number of impressions delivered or the number of actions, such as clicks, taken by our users.
Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. We recognize revenue from the display of impression-based ads in the contracted period in which the impressions are delivered. Impressions are considered delivered when an ad is displayed to users. We recognize revenue from the delivery of action-based ads in the period in which a user takes the action the marketer contracted for. For advertising revenue arrangements where we are not the principal, we recognize revenue on a net basis.
We may accept a lower consideration than the amount promised per the contract for certain revenue transactions and certain customers may receive cash-based incentives or credits, which are accounted for as variable consideration when estimating the amount of revenue to recognize. We believe that there will not be significant changes to our estimates of variable consideration.
Payments and Other Fees
Payments revenue is comprised of the net fee we receive from developers using our Payments infrastructure.
Other fees revenue, which was not material for all periods presented in our financial statements, consists primarily of revenue from the delivery of virtual reality platform devices, as well as revenue from various other sources.
Deferred Revenue and Deposits
Deferred revenue consists of billings and payments from marketers in advance of revenue recognition. Deposits relate to unused balances held on behalf of our users who primarily use these balances to make purchases in games on our platform. Once this balance is utilized by a user, approximately 70% of this amount would then be payable to the developer and the balance would be recognized as revenue. The increase in the deferred revenue balance for the nine months ended September 30, 2018 was driven by prepayments from marketers, partially offset by revenue recognized that was included in the deferred revenue balance at the beginning of the period.

Our payment terms vary by the products or services offered. The term between billings and when payment is due is not significant. For certain products or services and customer types, we require payment before the products or services are delivered to the customer.

13


Deferred revenue and deposits consists of the following (in millions):
 
September 30, 2018
 
December 31, 2017
Deferred revenue
$
85

 
$
68

Deposits
30

 
30

Total deferred revenue and deposits
$
115

 
$
98

Practical Expedients and Exemptions
We generally expense sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within sales and marketing expenses.
We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

Note 2.
Earnings per Share
We compute earnings per share (EPS) of Class A and Class B common stock using the two-class method required for participating securities. We consider restricted stock awards to be participating securities because holders of such shares have non-forfeitable dividend rights in the event of our declaration of a dividend for common shares.
Undistributed earnings allocated to participating securities are subtracted from net income in determining net income attributable to common stockholders. Basic EPS is computed by dividing net income attributable to common stockholders by the weighted-average number of shares of our Class A and Class B common stock outstanding, adjusted for outstanding shares that are subject to repurchase.
For the calculation of diluted EPS, net income attributable to common stockholders for basic EPS is adjusted by the effect of dilutive securities, such as awards under our equity compensation plans and inducement awards under separate non-plan restricted stock unit (RSU) award agreements. In addition, the computation of the diluted EPS of Class A common stock assumes the conversion of our Class B common stock to Class A common stock, while the diluted EPS of Class B common stock does not assume the conversion of those shares to Class A common stock. Diluted EPS attributable to common stockholders is computed by dividing the resulting net income attributable to common stockholders by the weighted-average number of fully diluted common shares outstanding.
RSUs with anti-dilutive effect were excluded from the EPS calculation and they were not material for the three and nine months ended September 30, 2018 and 2017, respectively.
Basic and diluted EPS are the same for each class of common stock because they are entitled to the same liquidation and dividend rights.

14


The numerators and denominators of the basic and diluted EPS computations for our common stock are calculated as follows (in millions, except per share amounts): 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
 
Class A
 
Class B
 
Class A
 
Class B
 
Class A
 
Class B
 
Class A
 
Class B
Basic EPS:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Numerator
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net income
$
4,293

 
$
844

 
$
3,853

 
$
854

 
$
12,661

 
$
2,569

 
$
9,523

 
$
2,142

Less: Net income attributable to participating securities

 

 
3

 

 
1

 

 
11

 
2

Net income attributable to common stockholders
$
4,293

 
$
844

 
$
3,850

 
$
854

 
$
12,660

 
$
2,569

 
$
9,512

 
$
2,140

Denominator
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average shares outstanding
2,411

 
474

 
2,378

 
528

 
2,407

 
488

 
2,368

 
533

Less: Shares subject to repurchase

 

 
1

 
1

 

 

 
2

 
1

Number of shares used for basic EPS computation
2,411

 
474

 
2,377

 
527

 
2,407

 
488

 
2,366

 
532

Basic EPS
$
1.78

 
$
1.78

 
$
1.62

 
$
1.62

 
$
5.26

 
$
5.26

 
$
4.02

 
$
4.02

Diluted EPS:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Numerator
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net income attributable to common stockholders
$
4,293

 
$
844

 
$
3,850

 
$
854

 
$
12,660

 
$
2,569

 
$
9,512

 
$
2,140

Reallocation of net income attributable to participating securities

 

 
3

 

 
1

 

 
13

 

Reallocation of net income as a result of conversion of Class B to Class A common stock
844

 

 
854

 

 
2,569

 

 
2,140

 

Reallocation of net income to Class B common stock

 
(4
)
 

 
(5
)
 

 
(14
)
 

 
(6
)
Net income attributable to common stockholders for diluted EPS
$
5,137

 
$
840

 
$
4,707

 
$
849

 
$
15,230

 
$
2,555

 
$
11,665

 
$
2,134

Denominator
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Number of shares used for basic EPS computation
2,411

 
474

 
2,377

 
527

 
2,407

 
488

 
2,366

 
532

Conversion of Class B to Class A common stock
474

 

 
527

 

 
488

 

 
532

 

Weighted average effect of dilutive securities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Employee stock options
2

 
2

 
3

 
3

 
2

 
2

 
4

 
4

RSUs
26

 

 
47

 
2

 
34

 
1

 
49

 
3

Shares subject to repurchase and other

 

 
2

 
1

 

 

 
3

 
1

Number of shares used for diluted EPS computation
2,913

 
476

 
2,956

 
533

 
2,931

 
491

 
2,954

 
540

Diluted EPS
$
1.76

 
$
1.76

 
$
1.59

 
$
1.59

 
$
5.20

 
$
5.20

 
$
3.95

 
$
3.95


15


Note 3.
Cash and Cash Equivalents, and Marketable Securities
The following table sets forth the cash and cash equivalents, and marketable securities (in millions):
 
September 30, 2018
 
December 31, 2017
Cash and cash equivalents:
 
 
 
Cash
$
2,764

 
$
2,212

Money market funds
5,991

 
5,268

U.S. government securities
286

 
66

U.S. government agency securities
12

 
25

Certificate of deposits and time deposits
584

 
440

Corporate debt securities

 
68

Total cash and cash equivalents
9,637

 
8,079

Marketable securities:
 
 
 
U.S. government securities
14,251

 
12,766

U.S. government agency securities
8,356

 
10,944

Corporate debt securities
8,962

 
9,922

Total marketable securities
31,569

 
33,632

Total cash and cash equivalents, and marketable securities
$
41,206

 
$
41,711

The gross unrealized losses on our marketable securities were $514 million and $289 million as of September 30, 2018 and December 31, 2017, respectively. The gross unrealized gains for both periods were not significant. In addition, gross unrealized losses that had been in a continuous loss position for 12 months or longer were $349 million and $169 million as of September 30, 2018 and December 31, 2017, respectively. As of September 30, 2018, we considered the decreases in market value on our marketable securities to be temporary in nature and did not consider any of our investments to be other-than-temporarily impaired.
The following table classifies our marketable securities by contractual maturities (in millions):
 
September 30, 2018
Due in one year
$
8,433

Due in one to five years
23,136

Total
$
31,569


16


Note 4.
Fair Value Measurement
The following table summarizes our assets measured at fair value and the classification by level of input within the fair value hierarchy (in millions): 
 
 
 
 
Fair Value Measurement at
Reporting Date Using
Description
 
September 30, 2018
 
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Cash equivalents:
 
 
 
 
 
 
 
 
Money market funds
 
$
5,991

 
$
5,991

 
$

 
$

U.S. government securities
 
286

 
286

 

 

U.S. government agency securities
 
12

 
12

 

 

Certificate of deposits and time deposits
 
584

 

 
584

 

Marketable securities:
 
 
 
 
 
 
 
 
U.S. government securities
 
14,251

 
14,251

 

 

U.S. government agency securities
 
8,356

 
8,356

 

 

Corporate debt securities
 
8,962

 

 
8,962

 

Total cash equivalents and marketable securities
 
$
38,442

 
$
28,896

 
$
9,546

 
$

 
 
 
 
Fair Value Measurement at
Reporting Date Using
Description
 
December 31, 2017
 
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Cash equivalents:
 
 
 
 
 
 
 
 
Money market funds
 
$
5,268

 
$
5,268

 
$

 
$

U.S. government securities
 
66

 
66

 

 

U.S. government agency securities
 
25

 
25

 

 

Certificate of deposits and time deposits
 
440

 

 
440

 

Corporate debt securities
 
68

 

 
68

 

Marketable securities:
 
 
 
 
 
 
 
 
U.S. government securities
 
12,766

 
12,766

 

 

U.S. government agency securities
 
10,944

 
10,944

 

 

Corporate debt securities
 
9,922

 

 
9,922

 

Total cash equivalents and marketable securities
 
$
39,499

 
$
29,069

 
$
10,430

 
$

We classify our cash equivalents and marketable securities within Level 1 or Level 2 because we use quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value.


17


Note 5.
Property and Equipment
Property and equipment consists of the following (in millions): 
 
September 30,
2018
 
December 31,
2017
Land
$
890

 
$
798

Buildings
6,609

 
4,909

Leasehold improvements
1,576

 
959

Network equipment
11,181

 
7,998

Computer software, office equipment and other
1,025

 
681

Construction in progress
5,915

 
2,992

Total
27,196

 
18,337

Less: Accumulated depreciation
(6,084
)
 
(4,616
)
Property and equipment, net
$
21,112

 
$
13,721

Construction in progress includes costs related to construction of data centers, network equipment infrastructure to support our data centers around the world, and office buildings. No interest was capitalized during the three and nine months ended September 30, 2018 and 2017.

Note 6.
Goodwill and Intangible Assets

During the nine months ended September 30, 2018, we purchased certain intangible assets and completed business acquisitions that were not material to our condensed consolidated financial statements, either individually or in the aggregate. Accordingly, pro forma historical results of operations related to these business acquisitions during the nine months ended September 30, 2018 have not been presented. We have included the financial results of these business acquisitions in our condensed consolidated financial statements from their respective dates of acquisition.
The changes in the carrying amount of goodwill for the nine months ended September 30, 2018 are as follows (in millions): 
Balance as of December 31, 2017
$
18,221

Goodwill acquired
88

Effect of currency translation adjustment
(5
)
Balance as of September 30, 2018
$
18,304

Intangible assets consist of the following (in millions):
 
 
 
September 30, 2018
 
December 31, 2017
 
Weighted-Average Remaining Useful Lives (in years)
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
Acquired users
3.0
 
$
2,056

 
$
(1,188
)
 
$
868

 
$
2,056

 
$
(971
)
 
$
1,085

Acquired technology
1.4
 
1,002

 
(834
)
 
168

 
972

 
(711
)
 
261

Acquired patents
5.8
 
805

 
(548
)
 
257

 
785

 
(499
)
 
286

Trade names
1.6
 
629

 
(489
)
 
140

 
629

 
(406
)
 
223

Other
2.3
 
162

 
(144
)
 
18

 
162

 
(133
)
 
29

Total intangible assets
3.2
 
$
4,654

 
$
(3,203
)
 
$
1,451

 
$
4,604

 
$
(2,720
)
 
$
1,884

Amortization expense of intangible assets was $156 million and $483 million for the three and nine months ended September 30, 2018, respectively, and $173 million and $522 million for the three and nine months ended September 30, 2017, respectively.

18


As of September 30, 2018, expected amortization expense for the unamortized acquired intangible assets for the next five years and thereafter is as follows (in millions):
The remainder of 2018
$
156

2019
551

2020
377

2021
271

2022
31

Thereafter
65

Total
$
1,451


Note 7.
Long-term Debt
In May 2016, we entered into a $2.0 billion senior unsecured revolving credit facility, and any amounts outstanding under this facility will be due and payable on May 20, 2021. As of September 30, 2018, no amounts had been drawn down, and we were in compliance with the covenants under this facility.

Note 8.
Commitments and Contingencies
Commitments
Leases
During the nine months ended September 30, 2018, we entered into additional non-cancelable operating lease agreements. Our various non-cancelable operating lease agreements, which include among others, certain of our offices, data center, land and colocation leases, have original lease periods expiring between 2018 and 2093. Operating lease expense was $170 million and $436 million for the three and nine months ended September 30, 2018, respectively, and $91 million and $247 million for the three and nine months ended September 30, 2017, respectively.
The following is a schedule, by years, of the future minimum lease payments required under non-cancelable operating leases as of September 30, 2018 (in millions):
 
Operating Leases
 
Financing obligation, building in progress - leased facilities(1)
The remainder of 2018
$
108

 
$

2019
726

 
1

2020
873

 
9

2021
946

 
9

2022
906

 
9

Thereafter
8,830

 
91

Total minimum lease payments
$
12,389

 
$
119

(1)
We entered into an agreement to lease an office building that is under construction. As a result of our involvement during this construction period, we are considered for accounting purposes to be the owner of the construction project. Financing obligation, building in progress - leased facilities represent the total expected financing and lease obligations associated with this lease and will be settled through monthly lease payments to the landlord when we occupy the office space upon completion. This amount includes $70 million that is included in property and equipment, net and other liabilities on our condensed consolidated balance sheets as of September 30, 2018.
Other contractual commitments
We also have $5.29 billion of non-cancelable contractual commitments as of September 30, 2018, primarily related to network infrastructure and our data center operations. The majority of these commitments are due within five years.


19


Contingencies
Beginning on March 20, 2018, multiple putative class actions and derivative actions were filed in state and federal courts in the United States and elsewhere against us and certain of our directors and officers alleging violations of securities laws, breach of fiduciary duties, and other causes of action in connection with our user data practices and the misuse of certain data by a developer that shared such data with third parties in violation of our terms and policies, and seeking unspecified damages and injunctive relief. Beginning on July 27, 2018, two putative class actions were filed in federal court in the United States against us and certain of our directors and officers alleging violations of securities laws in connection with the disclosure of our earnings results for the second quarter of 2018, and seeking unspecified damages. These two actions subsequently were transferred and consolidated in the U.S. District Court for the Northern District of California with the putative securities class action described above relating to the misuse of certain data by a developer. We believe these lawsuits are without merit, and we are vigorously defending them. In addition, our user data practices and the events surrounding the misuse of certain data by a developer became the subject of U.S. Federal Trade Commission and other government inquiries in the United States, Europe, and other jurisdictions.
Beginning on September 28, 2018, multiple putative class actions were filed in state and federal courts in the United States and elsewhere against us alleging violations of consumer protection laws and other causes of action in connection with a third-party cyber-attack that exploited a vulnerability in Facebook’s code to steal user access tokens and access certain profile information from user accounts on Facebook, and seeking unspecified damages and injunctive relief. We believe these lawsuits are without merit, and we are vigorously defending them. In addition, the events surrounding this cyber-attack became the subject of Irish Data Protection Commission, U.S. Federal Trade Commission and other government inquiries in the United States, Europe, and other jurisdictions.
In addition, from time to time, we are subject to litigation and other proceedings involving law enforcement and other regulatory agencies, including in particular in Brazil and Europe, in order to ascertain the precise scope of our legal obligations to comply with the requests of those agencies, including our obligation to disclose user information in particular circumstances. A number of such instances have resulted in the assessment of fines and penalties against us. We believe we have multiple legal grounds to satisfy these requests or prevail against associated fines and penalties, and we intend to vigorously defend such fines and penalties.
Although we believe that it is reasonably possible that we may incur a substantial loss in some of the cases, actions or inquiries described above, we are currently unable to estimate the amount of such losses or a range of possible losses. 
We are also party to various other legal proceedings, claims, and regulatory, tax or government inquiries and investigations that arise in the ordinary course of business. With respect to these matters, we evaluate the developments on a regular basis and accrue a liability when we believe a loss is probable and the amount can be reasonably estimated. We believe that the amount or any estimable range of reasonably possible or probable loss will not, either individually or in the aggregate, have a material adverse effect on our business and consolidated financial statements. However, the outcome of these matters is inherently uncertain. Therefore, if one or more of these matters were resolved against us for amounts in excess of management's expectations, our results of operations and financial condition, including in a particular reporting period in which any such outcome becomes probable and estimable, could be materially adversely affected.
For information regarding income tax contingencies, see Note 10 — Income Taxes.

Note 9.
Stockholders' Equity
Share Repurchase Program
In November 2016, our board of directors authorized a $6.0 billion share repurchase program of our Class A common stock, which commenced in 2017 and does not have an expiration date. We completed repurchases under this authorization during the second quarter of 2018. In April 2018, the authorization of the repurchase of our Class A common stock was increased by an additional $9.0 billion. During the nine months ended September 30, 2018, we repurchased and subsequently retired approximately 54 million shares of our Class A common stock for an aggregate amount of approximately $9.39 billion. As of September 30, 2018, approximately $3.54 billion remained available and authorized for repurchases. The timing and actual number of shares repurchased under this program depend on a variety of factors, including price, general business and market conditions, and other investment opportunities, and shares may be repurchased through open market purchases or privately negotiated transactions, including through the use of trading plans intended to qualify under Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.

20


Share-based Compensation Plans
We maintain two share-based employee compensation plans: the 2012 Equity Incentive Plan, which was amended in each of June 2016 and February 2018 (Amended 2012 Plan), and the 2005 Stock Plan (collectively, Stock Plans). Our Amended 2012 Plan serves as the successor to our 2005 Stock Plan and provides for the issuance of incentive and nonstatutory stock options, restricted stock awards, stock appreciation rights, RSUs, performance shares, and stock bonuses to qualified employees, directors and consultants. Outstanding awards under the 2005 Stock Plan continue to be subject to the terms and conditions of the 2005 Stock Plan.
Effective January 1, 2018, there were 67 million shares of our Class A common stock reserved for issuance under our Amended 2012 Plan. The number of shares reserved for issuance under our Amended 2012 Plan increases automatically on January 1 of each of the calendar years during the term of the Amended 2012 Plan, which will continue through and including April 2026 unless terminated earlier by our board of directors or a committee thereof, by a number of shares of Class A common stock equal to the lesser of (i) 2.5% of the total issued and outstanding shares of our Class A common stock as of the immediately preceding December 31st or (ii) a number of shares determined by our board of directors.
The following table summarizes the activities of stock option awards under the Stock Plans for the nine months ended September 30, 2018: 
 
Shares Subject to Options Outstanding
 
Number of
Shares
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value(1)
 
(in thousands)
 
 
 
(in years)
 
(in millions)
Balance as of December 31, 2017
3,078

 
$
10.06

 
 
 
 
Stock options exercised
(1,398
)
 
$
8.06

 
 
 
 
Balance as of September 30, 2018
1,680

 
$
11.72

 
1.8
 
$
257

Stock options exercisable as of September 30, 2018
1,680

 
$
11.72

 
1.8
 
$
257

(1)
The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying stock option awards and the official closing price of our Class A common stock of $164.46 as reported on the Nasdaq Global Select Market on September 30, 2018.
The following table summarizes the activities for our unvested RSUs for the nine months ended September 30, 2018:
 
Unvested RSUs(1)
 
Number of Shares
 
Weighted Average Grant Date Fair Value
 
(in thousands)
 
 
Unvested at December 31, 2017
81,214

 
$
110.49

Granted
33,015

 
$
172.97

Vested
(34,176
)
 
$
101.64

Forfeited
(5,938
)
 
$
114.33

Unvested at September 30, 2018
74,115

 
$
142.08

(1)
Unvested shares at December 31, 2017 included an inducement award issued in connection with the WhatsApp acquisition in 2014 which was subject to the terms, restrictions, and conditions of a separate non-plan RSU award agreement.
The fair value as of the respective vesting dates of RSUs that vested during the three and nine months ended September 30, 2018 was $2.11 billion and $6.24 billion, respectively, and $1.73 billion and $4.94 billion during the three and nine months ended September 30, 2017, respectively.
As of September 30, 2018, there was $9.57 billion of unrecognized share-based compensation expense related to RSUs. This unrecognized compensation expense is expected to be recognized over a weighted-average period of approximately three years based on vesting under the award service conditions.


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Note 10.
Income Taxes
Our tax provision for interim periods is determined using an estimated annual effective tax rate, adjusted for discrete items arising in that quarter. In each quarter, we update the estimated annual effective tax rate and make a year-to-date adjustment to the provision. The estimated annual effective tax rate is subject to significant volatility due to several factors, including our ability to accurately predict the proportion of our income (loss) before provision for income taxes in multiple jurisdictions, the effects of acquisitions, and the integration of those acquisitions.
Our 2018 effective tax rate differs from the U.S. statutory rate of 21% primarily due to a portion of our income before provision for income taxes being earned in jurisdictions subject to tax rates lower than 21%, and the recognition of excess tax benefits from share-based compensation.
In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (SAB 118), which allows us to record provisional amounts for the Tax Act during a measurement period not to extend beyond one year of the enactment date. We continue to analyze our provisional amounts, which are still subject to change during the measurement period. We anticipate further guidance on accounting interpretations from the FASB and application of the law from the U.S. Department of the Treasury. During the three and nine months ended September 30, 2018, we completed certain items for our remeasurement of deferred tax balances and recorded immaterial adjustments.
Our gross unrecognized tax benefits were $4.26 billion and $3.87 billion on September 30, 2018 and December 31, 2017, respectively. If the gross unrecognized tax benefits as of September 30, 2018 were realized in a subsequent period, this would result in a tax benefit of $2.80 billion within our provision of income taxes at such time. The amount of interest and penalties accrued as of September 30, 2018 and December 31, 2017 was $310 million and $154 million, respectively. We expect to continue to accrue unrecognized tax benefits for certain recurring tax positions and anticipate such amount accrued for future quarters will be similar to the amounts accrued by quarter in 2017.

On July 27, 2015, the United States Tax Court (Tax Court) issued an opinion in Altera Corp. v. Commissioner (Tax Court Opinion), which concluded that related parties in a cost sharing arrangement are not required to share expenses related to share-based compensation. The Tax Court Opinion was appealed by the Commissioner to the Ninth Circuit Court of Appeals (Ninth Circuit). On July 24, 2018, the Ninth Circuit issued an opinion (Ninth Circuit Opinion) that reversed the Tax Court Opinion. The Ninth Circuit Opinion was subsequently withdrawn and the case is being reheard. Since the Ninth Circuit Opinion was withdrawn, we continue to treat our share-based compensation expense in accordance with the Tax Court Opinion. We also continue to monitor developments in this case and any impact the final opinion could have on our consolidated financial statements.
We are subject to taxation in the United States and various other state and foreign jurisdictions. The material jurisdictions in which we are subject to potential examination include the United States and Ireland. We are under examination by the Internal Revenue Service (IRS) for our 2014 through 2016 tax years and by the Ireland tax authorities for our 2012 through 2015 tax years. Our 2017 tax year remains open to examination by the IRS. Our 2016 and subsequent tax years remain open to examination in Ireland.
In July 2016, we received a Statutory Notice of Deficiency (Notice) from the IRS related to transfer pricing with our foreign subsidiaries in conjunction with the examination of the 2010 tax year. While the Notice applies only to the 2010 tax year, the IRS states that it will also apply its position for tax years subsequent to 2010, which, if the IRS prevails in its position, could result in an additional federal tax liability of an estimated, aggregate amount of up to approximately $5.0 billion in excess of the amounts in our originally filed U.S. return, plus interest and any penalties asserted. We do not agree with the position of the IRS and have filed a petition in the Tax Court challenging the Notice. As of September 30, 2018, we have not resolved this matter, and proceedings continue in the Tax Court. In March 2018, we received a second Notice from the IRS in conjunction with the examination of our 2011 through 2013 tax years. The IRS applied its position from the 2010 tax year to each of these years and also proposed new adjustments related to other transfer pricing with our foreign subsidiaries and certain tax credits that we claimed. If the IRS prevails in its position for these new adjustments, this could result in an additional federal tax liability of up to approximately $680 million in excess of the amounts in our originally filed U.S. return, plus interest and any penalties asserted. We do not agree with the positions of the IRS in the second Notice and have filed a petition in the Tax Court challenging the second Notice. We have previously accrued an estimated unrecognized tax benefit consistent with the guidance in ASC 740 that is lower than the potential additional federal tax liability from the positions taken by the IRS in the two Notices. In addition, if the IRS prevails in its positions related to transfer pricing with our foreign subsidiaries, the additional tax that we would owe would be partially offset by a reduction in the tax that we owe under the mandatory transition tax on accumulated foreign earnings from the Tax Act.
We believe that adequate amounts have been reserved in accordance with ASC 740 for any adjustments to the provision for income taxes or other tax items that may ultimately result from these examinations. The timing of the resolution, settlement, and closure of any audits is highly uncertain, and it is reasonably possible that the balance of gross unrecognized tax benefits could

22


significantly change in the next 12 months. Given the number of years remaining that are subject to examination, we are unable to estimate the full range of possible adjustments to the balance of gross unrecognized tax benefits. If the taxing authorities prevail in the assessment of additional tax due, the assessed tax, interest, and penalties, if any, could have a material adverse impact on our financial position, results of operations, and cash flows.

Note 11.
Geographical Information
The following table sets forth property and equipment, net by geographic area (in millions):
 
September 30,
2018
 
December 31,
2017
Property and equipment, net:
 
 
 
United States
$
16,038

 
$
10,406

Rest of the world(1)
5,074

 
3,315

Total property and equipment, net
$
21,112

 
$
13,721

 
(1)
No individual country, other than disclosed above, exceeded 10% of our total property and equipment, net for any period presented.

For information regarding revenue disaggregated by geography, see Note 1 — Summary of Significant Accounting Policies, Revenue Recognition.

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Item 2.
Management's Discussion and Analysis of Financial Condition and Results of Operations
You should read the following discussion of our financial condition and results of operations in conjunction with our condensed consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q and with our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the Securities and Exchange Commission. In addition to our historical condensed consolidated financial information, the following discussion contains forward-looking statements that reflect our plans, estimates, and beliefs. Our actual results could differ materially from those discussed in the forward-looking statements. Factors that could cause or contribute to these differences include those discussed below and elsewhere in this Quarterly Report on Form 10-Q, particularly in Part II, Item 1A, "Risk Factors." For a discussion of limitations in the measurement of certain of our user metrics, see the section entitled "Limitations of Key Metrics and Other Data" in this Quarterly Report on Form 10-Q.
Certain revenue information in the section entitled "—Three and Nine Months Ended September 30, 2018 and 2017—RevenueForeign Exchange Impact on Revenue" is presented on a constant currency basis. This information is a non-GAAP financial measure. To calculate revenue on a constant currency basis, we translated revenue for the three and nine months ended September 30, 2018 using the prior year's monthly exchange rates for our settlement currencies other than the U.S. dollar. This non-GAAP financial measure is not intended to be considered in isolation or as a substitute for, or superior to, financial information prepared and presented in accordance with GAAP. This measure may be different from non-GAAP financial measures used by other companies, limiting its usefulness for comparison purposes. Moreover, presentation of revenue on a constant currency basis is provided for year-over-year comparison purposes, and investors should be cautioned that the effect of changing foreign currency exchange rates has an actual effect on our operating results. We believe this non-GAAP financial measure provides investors with useful supplemental information about the financial performance of our business, enables comparison of financial results between periods where certain items may vary independent of business performance, and allows for greater transparency with respect to key metrics used by management in operating our business.
Executive Overview of Third Quarter Results
Our key user metrics and financial results for the third quarter of 2018 are as follows:
User growth:
Daily active users (DAUs) were 1.49 billion on average for September 2018, an increase of 9% year-over-year.
Monthly active users (MAUs) were 2.27 billion as of September 30, 2018, an increase of 10% year-over-year.
Financial results:
Revenue was $13.73 billion, up 33% year-over-year, and ad revenue was $13.54 billion, up 33% year-over-year.
Total costs and expenses were $7.95 billion.
Income from operations was $5.78 billion.
Net income was $5.14 billion with diluted earnings per share of $1.76.
Capital expenditures were $3.34 billion.
Effective tax rate was 13%.
Cash and cash equivalents and marketable securities were $41.21 billion as of September 30, 2018.
Headcount was 33,606 as of September 30, 2018, an increase of 45% year-over-year.
In the third quarter of 2018, we continued to focus on our main revenue growth priorities: (i) helping marketers use our products to connect with consumers where they are and (ii) making our ads more relevant and effective.
We continued to invest, based on our roadmap, in: (i) our most developed ecosystems, Facebook and Instagram, (ii) driving growth and building ecosystems around our products that already have significant user bases, such as Messenger and WhatsApp, as well as continuing to grow features like Stories, and (iii) long-term technology initiatives, such as connectivity, artificial intelligence, and augmented and virtual reality, that we believe will further our mission to give people the power to build community and bring the world closer together. We intend to continue to invest based on this roadmap and we anticipate that additional investments in the following areas will drive significant year-over-year expense growth in 2018: (i) increased investments in safety and security, marketing, video content, and our long-term technology initiatives, and (ii) scaling our headcount and expanding our data center capacity, network infrastructure, and office facilities to support our growth. Expense growth exceeded revenue growth in the third quarter of 2018, which we anticipate will continue in the remainder of 2018 and 2019.

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Trends in Our User Metrics
The numbers for our key metrics, our DAUs, MAUs, and average revenue per user (ARPU), do not include Instagram, WhatsApp, or Oculus users unless they would otherwise qualify as such users, respectively, based on their other activities on Facebook. In addition, other user engagement metrics do not include Instagram, WhatsApp, or Oculus unless otherwise specifically stated.
Trends in the number of users affect our revenue and financial results by influencing the number of ads we are able to show, the value of our ads to marketers, the volume of Payments transactions, as well as our expenses and capital expenditures. Substantially all of our daily and monthly active users (as defined below) access Facebook on mobile devices.
Daily Active Users (DAUs). We define a daily active user as a registered Facebook user who logged in and visited Facebook through our website or a mobile device, or used our Messenger application (and is also a registered Facebook user), on a given day. We view DAUs, and DAUs as a percentage of MAUs, as measures of user engagement on Facebook.
dauq318grapha07.jpg
Note: For purposes of reporting DAUs, MAUs, and ARPU by geographic region, Europe includes all users in Russia and Turkey and Rest of World includes all users in Africa, Latin America, and the Middle East.

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Worldwide DAUs increased 9% to 1.49 billion on average during September 2018 from 1.37 billion during September 2017. Users in India, Indonesia, and the Philippines represented key sources of growth in DAUs during September 2018, relative to the same period in 2017.
Monthly Active Users (MAUs). We define a monthly active user as a registered Facebook user who logged in and visited Facebook through our website or a mobile device, or used our Messenger application (and is also a registered Facebook user), in the last 30 days as of the date of measurement. MAUs are a measure of the size of our global active user community on Facebook.
mauq318grapha05.jpg
As of September 30, 2018, we had 2.27 billion MAUs, an increase of 10% from September 30, 2017. Users in India, Indonesia, and the Philippines represented key sources of growth in the third quarter of 2018, relative to the same period in 2017.

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Trends in Our Monetization by User Geography
We calculate our revenue by user geography based on our estimate of the geography in which ad impressions are delivered, virtual and digital goods are purchased, or virtual reality platform devices are shipped. We define ARPU as our total revenue in a given geography during a given quarter, divided by the average of the number of MAUs in the geography at the beginning and end of the quarter. While ARPU includes all sources of revenue, the number of MAUs used in this calculation only includes users of Facebook and Messenger as described in the definition of MAU above. Revenue from users who are not also Facebook or Messenger MAUs was not material. The geography of our users affects our revenue and financial results because we currently monetize users in different geographies at different average rates. Our revenue and ARPU in regions such as United States & Canada and Europe are relatively higher primarily due to the size and maturity of those online and mobile advertising markets. For example, ARPU in the third quarter of 2018 in the United States & Canada region was more than ten times higher than in the Asia-Pacific region.
revenueq318grapha04.jpg
revandarpu06302017a02.jpg
Note: Our revenue by user geography in the charts above is geographically apportioned based on our estimation of the geographic location of our users when they perform a revenue-generating activity. This allocation differs from our revenue disaggregated by geography disclosure in our condensed consolidated financial statements where revenue is geographically apportioned based on the location of the customer.


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During the third quarter of 2018, worldwide ARPU was $6.09, an increase of 20% from the third quarter of 2017. Over this period, ARPU increased by 30% in United States & Canada, 29% in Europe, 18% in Asia-Pacific, and 14% in Rest of World. In addition, user growth was more rapid in geographies with relatively lower ARPU, such as Asia-Pacific and Rest of World. We expect that user growth in the future will be primarily concentrated in those regions where ARPU is relatively lower, such that worldwide ARPU may continue to increase at a slower rate relative to ARPU in any geographic region, or potentially decrease even if ARPU increases in each geographic region.

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Components of Results of Operations
Revenue
Advertising. We generate substantially all of our revenue from advertising. Our advertising revenue is generated by displaying ad products on Facebook, Instagram, Messenger, and third-party affiliated websites or mobile applications. Marketers pay for ad products either directly or through their relationships with advertising agencies and resellers, based on the number of impressions delivered or the number of actions, such as clicks, taken by users. We recognize revenue from the display of impression-based ads in the contracted period in which the impressions are delivered. Impressions are considered delivered when an ad is displayed to a user. We recognize revenue from the delivery of action-based ads in the period in which a user takes the action the marketer contracted for. The number of ads we show is subject to methodological changes as we continue to evolve our ads business and the structure of our ads products. We calculate price per ad as total ad revenue divided by the number of ads delivered, representing the effective price paid per impression by a marketer regardless of their desired objective such as impression or action. For advertising revenue arrangements where we are not the principal, we recognize revenue on a net basis.
Payments and other fees. Payments revenue is comprised of the net fee we receive from developers using our Payments infrastructure. Our other fees revenue, which has not been significant in recent periods, consists primarily of revenue from the delivery of virtual reality platform devices, as well as revenue from various other sources.
Cost of Revenue and Operating Expenses
Cost of revenue. Our cost of revenue consists primarily of expenses associated with the delivery and distribution of our products. These include expenses related to the operation of our data centers, such as facility and server equipment depreciation, salaries, benefits, and share-based compensation for employees on our operations teams, and energy and bandwidth costs. Cost of revenue also includes costs associated with partner arrangements, including traffic acquisition and content acquisition costs, credit card and other transaction fees related to processing customer transactions, cost of virtual reality platform device inventory sold, and amortization of intangible assets.
Research and development. Research and development expenses consist primarily of share-based compensation, salaries, and benefits for employees on our engineering and technical teams who are responsible for building new products as well as improving existing products. We expense all of our research and development costs as they are incurred.
Marketing and sales. Our marketing and sales expenses consist of salaries, share-based compensation, and benefits for our employees engaged in sales, sales support, marketing, business development, and customer service functions. Our marketing and sales expenses also include marketing and promotional expenditures, professional services such as content reviewers, as well as amortization of intangible assets.
General and administrative. The majority of our general and administrative expenses consist of salaries, benefits, and share-based compensation for certain of our executives as well as our legal, finance, human resources, corporate communications and policy, and other administrative employees. In addition, general and administrative expenses include legal-related costs and professional services.

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Results of Operations
The following tables set forth our condensed consolidated statements of income data:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
 
(in millions)
 
(in millions)
Revenue
$
13,727

 
$
10,328

 
$
38,924

 
$
27,681

Costs and expenses:
 
 
 
 
 
 
 
Cost of revenue
2,418

 
1,448

 
6,559

 
3,843

Research and development
2,657

 
2,052

 
7,418

 
5,805

Marketing and sales
1,928

 
1,170

 
5,379

 
3,351

General and administrative
943

 
536

 
2,475

 
1,831

Total costs and expenses
7,946

 
5,206

 
21,831

 
14,830

Income from operations
5,781

 
5,122

 
17,093

 
12,851

Interest and other income, net
131

 
114

 
297

 
281

Income before provision for income taxes
5,912

 
5,236

 
17,390

 
13,132

Provision for income taxes
775

 
529

 
2,160

 
1,467

Net income
$
5,137

 
$
4,707

 
$
15,230

 
$
11,665

Share-based compensation expense included in costs and expenses:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
 
(in millions)
 
(in millions)
Cost of revenue
$
72

 
$
47

 
$
202

 
$
128

Research and development
748

 
776

 
2,347

 
2,233

Marketing and sales
133

 
114

 
380

 
330

General and administrative
87

 
73

 
251

 
218

Total share-based compensation expense
$
1,040

 
$
1,010

 
$
3,180

 
$
2,909


The following tables set forth our condensed consolidated statements of income data (as a percentage of revenue): 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Revenue
100
%
 
100
%
 
100
%
 
100
%
Costs and expenses:
 
 
 
 
 
 
 
Cost of revenue
18

 
14

 
17

 
14

Research and development
19

 
20

 
19

 
21

Marketing and sales
14

 
11

 
14