Registration Statement on Form S-1

As filed with the Securities and Exchange Commission on February 1, 2012

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form S-1

REGISTRATION STATEMENT

Under

The Securities Act of 1933

Facebook, Inc.

(Exact name of Registrant as specified in its charter)

Delaware 7370 20-1665019 (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (IRS Employer Identification No.)

Facebook, Inc.

1601 Willow Road

Menlo Park, California 94025

(650) 308-7300

(Address, including zip code, and telephone number, including area code, of Registrants principal executive offices)

David A. Ebersman

Chief Financial Officer

Facebook, Inc.

1601 Willow Road

Menlo Park, California 94025

(650) 308-7300

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Please send copies of all communications to:

Gordon K. Davidson, Esq. Jeffrey R. Vetter, Esq. James D. Evans, Esq. Fenwick & West LLP 801 California Street Mountain View, California 94041 (650) 988-8500 Theodore W. Ullyot, Esq. David W. Kling, Esq. Michael L. Johnson, Esq. Facebook, Inc. 1601 Willow Road Menlo Park, California 94025 (650) 308-7300 William H. Hinman, Jr., Esq. Daniel N. Webb, Esq. Simpson Thacher & Bartlett LLP 2550 Hanover Street Palo Alto, California 94304 (650) 251-5000

Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this Registration Statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act, check the following box: ¨

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ¨ Accelerated filer ¨ Non-accelerated filer x (Do not check if a smaller reporting company) Smaller reporting company ¨

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities to be Registered Proposed Maximum Aggregate Offering Price(1)(2) Amount of Registration Fee Class A Common Stock, $0.000006 par value $5,000,000,000 $573,000

(1) Estimated solely for the purpose of calculating the amount of the registration fee in accordance with Rule 457(o) of the Securities Act of 1933, as amended.

(2) Includes shares that the underwriters have the option to purchase to cover over-allotments, if any.

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this prospectus is not complete and may be changed. Neither we nor the selling stockholders may sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and neither we nor the selling stockholders are soliciting offers to buy these securities in any state where the offer or sale is not permitted.

PROSPECTUS (Subject to Completion)

Dated February 1, 2012

Shares

CLASS A COMMON STOCK

Facebook, Inc. is offering shares of its Class A common stock and the selling stockholders are offering shares of Class A common stock. We will not receive any proceeds from the sale of shares by the selling stockholders. This is our initial public offering and no public market currently exists for our shares of Class A common stock. We anticipate that the initial public offering price will be between $ and $ per share.

We have two classes of authorized common stock, Class A common stock and Class B common stock. The rights of the holders of Class A common stock and Class B common stock are identical, except with respect to voting and conversion. Each share of Class A common stock is entitled to one vote per share. Each share of Class B common stock is entitled to ten votes per share and is convertible at any time into one share of Class A common stock. Outstanding shares of Class B common stock will represent approximately % of the voting power of our outstanding capital stock following this offering, and outstanding shares of Class A common stock and Class B common stock held by, or subject to voting control by, our founder, Chairman, and CEO, Mark Zuckerberg, will represent approximately % of the voting power of our outstanding capital stock following this offering.

We intend to apply to list our Class A common stock on under the symbol FB.

Investing in our Class A common stock involves risks. See Risk Factors beginning on page 11.

PRICE $ A SHARE

Price to Public Underwriting Discounts and Commissions Proceeds to Facebook Proceeds to

Selling

Stockholders Per share $ $ $ $ Total $ $ $ $

We and the selling stockholders have granted the underwriters the right to purchase up to an additional shares of Class A common stock to cover over-allotments.

The Securities and Exchange Commission and state regulators have not approved or disapproved of these securities, or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters expect to deliver the shares of Class A common stock to purchasers on , 2012.

MORGAN STANLEY J.P. MORGAN GOLDMAN, SACHS & CO.

BofA MERRILL LYNCH BARCLAYS CAPITAL ALLEN & COMPANY LLC

, 2012

TABLE OF CONTENTS

Neither we, nor the selling stockholders, nor the underwriters, have authorized anyone to provide any information or to make any representations other than those contained in this prospectus or in any free writing prospectuses we have prepared. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We and the selling stockholders are offering to sell, and seeking offers to buy, shares of our Class A common stock only in jurisdictions where offers and sales are permitted. The information in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or any sale of shares of our Class A common stock. Our business, financial condition, results of operations, and prospects may have changed since that date.

The information in this preliminary prospectus is not complete and is subject to change. No person should rely on the information contained in this document for any purpose other than participating in our proposed initial public offering, and only the preliminary prospectus dated , 2012, is authorized by us to be used in connection with our proposed initial public offering. The preliminary prospectus will only be distributed by us and the underwriters named herein and no other person has been authorized by us to use this document to offer or sell any of our securities.

Until , 2012 (25 days after the commencement of our initial public offering), all dealers that buy, sell, or trade shares of our Class A common stock, whether or not participating in our initial public offering, may be required to deliver a prospectus. This delivery requirement is in addition to the obligation of dealers to deliver a prospectus when acting as underwriters and with respect to their unsold allotments or subscriptions.

For investors outside the United States: Neither we, nor the selling stockholders, nor the underwriters have done anything that would permit our initial public offering or possession or distribution of this prospectus in any jurisdiction where action for that purpose is required, other than in the United States. Persons outside the United States who come into possession of this prospectus must inform themselves about, and observe any restrictions relating to, the offering of the shares of our Class A common stock and the distribution of this prospectus outside of the United States.

i

PROSPECTUS SUMMARY This summary highlights information contained in greater detail elsewhere in this prospectus. This summary is not complete and does not contain all of the information you should consider in making your investment decision. You should read the entire prospectus carefully before making an investment in our Class A common stock. You should carefully consider, among other things, our consolidated financial statements and the related notes and the sections entitled Risk Factors and Managements Discussion and Analysis of Financial Condition and Results of Operations included elsewhere in this prospectus. FACEBOOK, INC. Our mission is to make the world more open and connected. People use Facebook to stay connected with their friends and family, to discover what is going on in the world around them, and to share and express what matters to them to the people they care about. Developers can use the Facebook Platform to build applications (apps) and websites that integrate with Facebook to reach our global network of users and to build products that are more personalized, social, and engaging. Advertisers can engage with more than 800 million monthly active users (MAUs) on Facebook or subsets of our users based on information they have chosen to share with us such as their age, location, gender, or interests. We offer advertisers a unique combination of reach, relevance, social context, and engagement to enhance the value of their ads. We believe that we are at the forefront of enabling faster, easier, and richer communication between people and that Facebook has become an integral part of many of our users daily lives. We have experienced rapid growth in the number of users and their engagement.  We had 845 million MAUs as of December 31, 2011, an increase of 39% as compared to 608 million MAUs as of December 31, 2010.  We had 483 million daily active users (DAUs) on average in December 2011, an increase of 48% as compared to 327 million DAUs in December 2010.  We had more than 425 million MAUs who used Facebook mobile products in December 2011.  There were more than 100 billion friend connections on Facebook as of December 31, 2011.  Our users generated an average of 2.7 billion Likes and Comments per day during the three months ended December 31, 2011.

1

For a description of how we calculate our MAUs and DAUs and factors that can affect these metrics, see Industry Data and User Metrics and Managements Discussion and Analysis of Financial Condition and Results of OperationsTrends in Our User Metrics. How We Create Value for Users Our top priority is to build useful and engaging products that enable you to:  Connect with Your Friends. With 845 million MAUs worldwide, our users are increasingly able to find and stay connected with their friends, family, and colleagues on Facebook.  Discover and Learn. We believe that users come to Facebook to discover and learn more about what is going on in the world around them, particularly in the lives of their friends and family and with public figures and organizations that interest them.  Express Yourself. We enable our users to share and publish their opinions, ideas, photos, and activities to audiences ranging from their closest friends to our 845 million users, giving every user a voice within the Facebook community.  Control What You Share. Through Facebooks privacy and sharing settings, our users can control what they share and with whom they share it.  Experience Facebook Across the Web. Through apps and websites built by developers using the Facebook Platform, our users can interact with their Facebook friends while playing games, listening to music, watching movies, reading news, and engaging in other activities.  Stay Connected with Your Friends on Mobile Devices. Through the combination of our mobile sites, smartphone apps, and feature phone products, users can bring Facebook with them on mobile devices wherever they go. Foundations of the Social Web We believe that the web, including the mobile web, is evolving to become more social and personalized. This evolution is creating more rewarding experiences that are centered on people, their connections, and their interests. We believe that the following elements form the foundation of the social web:  Authentic Identity. We believe that using your real name, connecting to your real friends, and sharing your genuine interests online create more engaging and meaningful experiences. Representing yourself with your authentic identity online encourages you to behave with the same norms that foster trust and respect in your daily life offline. Authentic identity is core to the Facebook experience, and we believe that it is central to the future of the web. Our terms of service require you to use your real name and we encourage you to be your true self online, enabling us and Platform developers to provide you with more personalized experiences.  Social Graph. The Social Graph represents the connections between people and their friends and interests. Every person or entity is represented by a point within the graph, and the affiliations between people and their friends and interests form billions of connections between the points. Our mapping of the Social Graph enables Facebook and Platform developers to build more engaging user experiences that are based on these connections.  Social Distribution. Over time, people are consuming and creating more kinds of information at a faster pace across a broader range of devices. The growing volume of information makes it challenging to find meaningful and trusted content and to effectively make your voice heard. Facebook organizes and prioritizes content and serves as a powerful social distribution tool delivering to users what we believe they will find most compelling based on their friends and interests.

2

How We Create Value for Developers Through the Facebook Platform The Facebook Platform is a set of development tools and application programming interfaces (APIs) that enables developers to easily integrate with Facebook to create social apps and websites and to reach our 845 million users. Platform developers build experiences that allow our users to connect and share with friends while engaging in a wide range of activities. Platform developers range from a student on his or her computer at home to teams of programmers at leading websites. We are focused on the growth and success of Platform developers by enabling:  Personalized and Social Experiences. We enable Platform developers to create better products that are personalized and social and that offer new ways for our users to engage with friends and share experiences across the web and on mobile devices. For example, a Facebook user can visit the Pandora website and immediately begin listening to a personalized radio station that is customized based on the bands the user Likes on Facebook.  Social Distribution. We enable Platform developers to reach our global user base and use our social distribution channels to increase traffic to their apps and websites.  Payments. We provide an online payments infrastructure that enables Platform developers to receive payments from our users in an easy-to-use, secure, and trusted environment. How We Create Value for Advertisers and Marketers We offer advertisers and marketers a unique combination of reach, relevance, social context, and engagement:  Reach. Facebook offers the ability to reach a vast consumer audience of over 800 million MAUs with a single advertising purchase.  Relevance. Advertisers can specify that we show their ads to a subset of our users based on demographic factors and specific interests that they have chosen to share with us on Facebook or by using the Like button around the web. We allow advertisers to select relevant and appropriate audiences for their ads, ranging from millions of users in the case of global brands to hundreds of users in the case of smaller, local businesses.  Social Context. We believe that the recommendations of friends have a powerful influence on consumer interest and purchase decisions. We offer advertisers the ability to include social context with their marketing messages. Social context is information that highlights a users friends connections with a particular brand or business, for example, that a friend Liked a product or checked in at a restaurant. We believe that users find marketing messages more engaging when they include social context.  Engagement. We believe that the shift to a more social web creates new opportunities for businesses to engage with interested customers. Any brand or business can create a Facebook Page to stimulate an ongoing dialog with our users. Our Market Opportunity Our Advertising Market Opportunity Advertisers objectives range from building long-term brand awareness to stimulating an immediate purchase. We offer advertising solutions that are designed to be more engaging and relevant for users in order to help advertisers better achieve their goals. Facebooks combination of reach, relevance, social context, and engagement gives advertisers enhanced opportunities to generate brand awareness and affiliation, while also creating new ways to generate near-term demand for their products from consumers likely to have purchase

3

intent. According to an industry source, total worldwide advertising spending in 2010 was $588 billion. Our addressable market opportunity includes portions of many existing advertising markets, including the traditional offline branded advertising, online display advertising, online performance-based advertising, and mobile advertising markets. Advertising on the social web is a significant market opportunity that is still emerging and evolving. We believe that most advertisers are still learning and experimenting with the best ways to leverage Facebook to create more social and valuable ads. Our Market Opportunity for Payments When users purchase virtual and digital goods from our Platform developers using our Payments infrastructure, we receive fees that represent a portion of the transaction value. Currently, substantially all of the Payments transactions between our users and Platform developers are for virtual goods used in social games. According to an industry source, the worldwide revenue generated from the sale of virtual goods increased from $2 billion in 2007 to $7 billion in 2010, and is forecasted to increase to $15 billion by 2014. We currently require Payments integration in games on Facebook, and we may seek to extend the use of Payments to other types of apps in the future. Our Strategy We are in the early days of pursuing our mission to make the world more open and connected. We believe that we have a significant opportunity to further enhance the value we deliver to users, developers, and advertisers. Key elements of our strategy are:  Expand Our Global User Community. We continue to focus on growing our user base across all geographies, including relatively less-penetrated, large markets such as Brazil, Germany, India, Japan, Russia, and South Korea. We intend to grow our user base by continuing our marketing and user acquisition efforts and enhancing our products, including mobile apps, in order to make Facebook more accessible and useful.  Build Great Social Products to Increase Engagement. We prioritize product development investments that we believe will create engaging interactions between our users, developers, and advertisers on Facebook, across the web, and on mobile devices. We continue to invest significantly in improving our core products such as News Feed, Photos, and Groups, developing new products such as Timeline and Ticker, and enabling new Platform apps and website integrations.  Provide Users with the Most Compelling Experience. Facebook users are sharing and receiving more information across a broader range of devices. To provide the most compelling user experience, we continue to develop products and technologies focused on optimizing our social distribution channels to deliver the most useful content to each user by analyzing and organizing vast amounts of information in real time.  Build Engaging Mobile Experiences. We are devoting substantial resources to developing engaging mobile products and experiences for a wide range of platforms, including smartphones and feature phones. In addition, we are working across the mobile industry with operators, hardware manufacturers, operating system providers, and developers to improve the Facebook experience on mobile devices and make Facebook available to more people around the world. We believe that mobile usage is critical to maintaining user growth and engagement over the long term.  Enable Developers to Build Great Social Products Using the Facebook Platform. The success of our Platform developers and the vibrancy of our Platform ecosystem are key to increasing user engagement.

4

We continue to invest in tools and APIs that enhance the ability of Platform developers to deliver products that are more social and personalized and better engage users on Facebook, across the web, and on mobile devices. Additionally, we plan to invest in enhancing our Payments offerings and in making the Payments experience on Facebook as convenient as possible for users and Platform developers.  Improve Ad Products for Advertisers and Users. We plan to continue to improve our ad products in order to create more value for advertisers and enhance their ability to make their advertising more social and relevant for users. Our advertising strategy centers on the belief that ad products that are social, relevant, and well-integrated with other content on Facebook can enhance the user experience while providing an attractive return for advertisers. We intend to invest in additional products for our advertisers and marketers while continuing to balance our monetization objectives with our commitment to optimizing the user experience. Summary Risk Factors Our business is subject to numerous risks described in the section entitled Risk Factors and elsewhere in this prospectus. You should carefully consider these risks before making an investment. Some of these risks include:  If we fail to retain existing users or add new users, or if our users decrease their level of engagement with Facebook, our revenue, financial results, and business may be significantly harmed;  We generate a substantial majority of our revenue from advertising. The loss of advertisers, or reduction in spending by advertisers with Facebook, could seriously harm our business;  Growth in use of Facebook through our mobile products, where we do not currently display ads, as a substitute for use on personal computers may negatively affect our revenue and financial results;  Facebook user growth and engagement on mobile devices depend upon effective operation with mobile operating systems, networks, and standards that we do not control;  We may not be successful in our efforts to grow and further monetize the Facebook Platform;  Our business is highly competitive, and competition presents an ongoing threat to the success of our business;  Improper access to or disclosure of our users information could harm our reputation and adversely affect our business;  Our business is subject to complex and evolving U.S. and foreign laws and regulations regarding privacy, data protection, and other matters. Many of these laws and regulations are subject to change and uncertain interpretation, and could harm our business;  Our CEO has control over key decision making as a result of his control of a majority of our voting stock;  The loss of Mark Zuckerberg, Sheryl K. Sandberg, or other key personnel could harm our business;  We anticipate that we will expend substantial funds in connection with tax withholding and remittance obligations related to the initial settlement of our restricted stock units (RSUs) approximately six months following our initial public offering;  The market price of our Class A common stock may be volatile or may decline, and you may not be able to resell your shares at or above the initial public offering price; and

5

 Substantial blocks of our total outstanding shares may be sold into the market as lock-up periods end, as further described in Shares Eligible for Future Sale. If there are substantial sales of shares of our common stock, the price of our Class A common stock could decline. Corporate Information We were incorporated in Delaware in July 2004. Unless expressly indicated or the context requires otherwise, the terms Facebook, company, we, us, and our in this prospectus 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. Our principal executive offices are located at 1601 Willow Road, Menlo Park, California 94025, and our telephone number is (650) 308-7300. Our website address is www.facebook.com. The information on or that can be accessed through our website is not part of this prospectus. Facebook, the Facebook logo, FB, the Like Button, f8, and our other registered or common law trademarks, service marks, or trade names appearing in this prospectus are the property of Facebook, Inc. Other trademarks, service marks, or trade names appearing in this prospectus are the property of their respective owners.

6

THE OFFERING Class A common stock offered By us shares By the selling stockholders shares Total shares Class A common stock to be outstanding after our initial public offering shares Class B common stock to be outstanding after our initial public offering shares Total Class A and Class B common stock to be outstanding after our initial public offering shares Over-allotment option of Class A common stock offered by us and the selling stockholders shares Use of proceeds We estimate that our net proceeds from the sale of the Class A common stock that we are offering will be approximately $ billion, assuming an initial public offering price of $ per share, which is the midpoint of the price range on the cover page of this prospectus, and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us. The principal purposes of our initial public offering are to create a public market for our Class A common stock and thereby enable future access to the public equity markets by us and our employees, obtain additional capital, and facilitate an orderly distribution of shares for the selling stockholders. We intend to use the net proceeds to us from our initial public offering for working capital and other general corporate purposes; however we do not have any specific uses of the net proceeds planned. We may use some of the net proceeds to us to satisfy a portion of the anticipated tax withholding and remittance obligations related to the initial settlement of our outstanding RSUs, which will become due approximately six months following the completion of our initial public offering. Additionally, we may use a portion of the proceeds to us for acquisitions of complementary businesses, technologies, or other assets. We will not receive any proceeds from the sale of shares of Class A common stock by the selling stockholders. Mark Zuckerberg, our founder, Chairman, and CEO, will offer and sell shares in our initial public offering. We expect that substantially all of the net proceeds Mr. Zuckerberg will receive upon such sale will be used to satisfy taxes that he will incur upon his exercise of an outstanding stock option to purchase 120,000,000 shares of our Class B common stock. See Use of Proceeds.

7

Voting rights Shares of Class A common stock are entitled to one vote per share. Shares of Class B common stock are entitled to ten votes per share. Holders of our Class A common stock and Class B common stock will generally vote together as a single class, unless otherwise required by law. Mr. Zuckerberg, who after our initial public offering will control more than % of the voting power of our outstanding capital stock, will have the ability to control the outcome of matters submitted to our stockholders for approval, including the election of our directors. See Description of Capital Stock. Proposed symbol FB The number of shares of Class A and Class B common stock to be outstanding after our initial public offering is based on 117,097,143 shares of our Class A common stock and 1,758,902,390 shares of our Class B common stock outstanding as of December 31, 2011, as well as the exercise by Mr. Zuckerberg of an outstanding stock option to purchase 120,000,000 shares of our Class B common stock and the automatic conversion of of those shares into an equal number of shares of Class A common stock upon their sale in our initial public offering, and excludes:  138,539,434 shares of Class B common stock issuable upon the exercise of options outstanding as of December 31, 2011 under our 2005 Stock Plan, with a weighted-average exercise price of approximately $0.83 per share;  378,772,184 shares of Class B common stock subject to RSUs outstanding as of December 31, 2011 under our 2005 Stock Plan;  1,947,208 shares of Class B common stock subject to RSUs granted between January 1, 2012 and January 31, 2012 under our 2005 Stock Plan; and  77,185,000 shares of our common stock reserved for future issuance under our equity compensation plans, consisting of 25,000,000 shares of Class A common stock reserved for issuance under our 2012 Equity Incentive Plan, and 52,185,000 shares of Class B common stock reserved for issuance under our 2005 Stock Plan. On the date of this prospectus, any remaining shares available for issuance under our 2005 Stock Plan will be added to the shares to be reserved under our 2012 Equity Incentive Plan and we will cease granting awards under the 2005 Stock Plan. Our 2012 Equity Incentive Plan also provides for automatic annual increases in the number of shares reserved thereunder, as more fully described in Executive CompensationEmployee Benefit Plans. Unless expressly indicated or the context requires otherwise, all information in this prospectus assumes:  the conversion of all outstanding shares of our convertible preferred stock into 545,551,391 shares of Class B common stock in connection with our initial public offering;  the automatic conversion of shares of our Class B common stock into an equal number of shares of our Class A common stock upon their sale by the selling stockholders in our initial public offering;  the conversion by certain of our existing stockholders of an aggregate of shares of our Class B common stock into an equivalent number of shares of our Class A common stock in connection with our initial public offering;  no exercise by the underwriters of their right to purchase up to an additional shares of Class A common stock to cover over-allotments; and  the filing of our restated certificate of incorporation and the effectiveness of our restated bylaws in connection with our initial public offering.

8

SUMMARY CONSOLIDATED FINANCIAL DATA The following table summarizes our consolidated financial data. We have derived the summary consolidated statements of income data for the years ended December 31, 2009, 2010, and 2011 and the consolidated balance sheets data as of December 31, 2010 and 2011 from our audited consolidated financial statements included elsewhere in this prospectus. Our historical results are not necessarily indicative of our results in any future period. The summary of our consolidated financial data set forth below should be read together with our consolidated financial statements and the related notes, as well as the section entitled Managements Discussion and Analysis of Financial Condition and Results of Operations, included elsewhere in this prospectus. Year Ended December 31, 2009 2010 2011 (in millions, except per share data) Consolidated Statements of Income Data: Revenue $ 777 $ 1,974 $ 3,711 Costs and expenses (1) : Cost of revenue 223 493 860 Marketing and sales 115 184 427 Research and development 87 144 388 General and administrative 90 121 280 Total costs and expenses 515 942 1,955 Income from operations 262 1,032 1,756 Other expense, net 8 24 61 Income before provision for income taxes 254 1,008 1,695 Provision for income taxes 25 402 695 Net income $ 229 $ 606 $ 1,000 Net income attributable to Class A and Class B common stockholders $ 122 $ 372 $ 668 Earnings per share attributable to Class A and Class B common stockholders (2) : Basic $ 0.12 $ 0.34 $ 0.52 Diluted $ 0.10 $ 0.28 $ 0.46 Pro forma earnings per share attributable to Class A and Class B common stockholders (2) : Basic $ 0.49 Diluted $ 0.43 (1) Costs and expenses include share-based compensation expense as follows: Year Ended December 31, 2009 2010 2011 (in millions) Cost of revenue $  $  $ 9 Marketing and sales 2 2 43 Research and development 6 9 114 General and administrative 19 9 51 Total share-based compensation expense $ 27 $ 20 $ 217 (2) See note 2 of the notes to our consolidated financial statements for a description of how we compute basic and diluted earnings per share attributable to Class A and Class B common stockholders and pro forma basic and diluted earnings per share attributable to Class A and Class B common stockholders.

9

As of December 31, 2011 Actual Pro Forma(1) Pro Forma As

Adjusted(2)(3) (in millions) Consolidated Balance Sheet Data: Cash, cash equivalents, and marketable securities $ 3,908 $3,908 $ Working capital 3,705 4,034 Property and equipment, net 1,475 1,475 Total assets 6,331 6,660 Total liabilities 1,432 1,432 Additional paid-in capital 2,684 4,267 Retained earnings 1,606 967 Total stockholders equity 4,899 5,228 (1) The pro forma consolidated balance sheet data as of December 31, 2011 presents our consolidated balance sheet data to give effect to the automatic conversion of all of our outstanding shares of convertible preferred stock into shares of Class B common stock in connection with our initial public offering and to also give effect to a share-based compensation expense of approximately $968 million associated with RSUs granted prior to 2011, for which the service condition was satisfied as of December 31, 2011 and which we expect to record upon completion of our initial public offering, as further described in Managements Discussion and Analysis of Financial Condition and Results of OperationsCritical Accounting Policies and EstimatesShare-based Compensation. The pro forma adjustment related to share-based compensation expense of approximately $968 million has been reflected as an increase to additional paid-in capital and the associated tax effect of $329 million has been netted against this charge, resulting in a net reduction of $639 million to retained earnings. The income tax effects have been reflected as an increase to deferred tax assets included in prepaid expenses and other current assets, to reflect the anticipated future tax benefits upon settlement of these RSUs. (2) The pro forma as adjusted consolidated balance sheet data reflects the items described in footnote (1) above and our receipt of estimated net proceeds from the sale of shares of Class A common stock that we are offering at an assumed initial public offering price of the Class A common stock of $ per share, the midpoint of the price range on the cover page of this prospectus, after deducting the estimated underwriting discounts and commissions and estimated offering expenses payable by us. A $1.00 increase (decrease) in the assumed initial public offering price of $ per share would increase (decrease) each of cash, cash equivalents, and marketable securities, working capital, total assets, additional paid-in capital, and total stockholders equity by $ million, assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same, and after deducting the estimated underwriting discounts and commissions. (3) The pro forma as adjusted information discussed above is illustrative only and will be adjusted based on the actual initial public offering price and other terms of our initial public offering determined at pricing.

10

RISK FACTORS

Investing in our Class A common stock involves a high degree of risk. You should consider carefully the risks and uncertainties described below, together with all of the other information in this prospectus, including the consolidated financial statements and the related notes included elsewhere in this prospectus, before deciding whether to invest in shares of our Class A common stock. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business. If any of the following risks actually occurs, our business, financial condition, results of operations, and future prospects could be materially and adversely affected. In that event, the market price of our Class A common stock could decline, and you could lose part or all of your investment.

Risks Related to Our Business and Industry

If we fail to retain existing users or add new users, or if our users decrease their level of engagement with Facebook, our revenue, financial results, and business may be significantly harmed.

The size of our user base and our users level of engagement are critical to our success. We had 845 million monthly active users (MAUs) as of December 31, 2011. Our financial performance has been and will continue to be significantly determined by our success in adding, retaining, and engaging active users. We anticipate that our active user growth rate will decline over time as the size of our active user base increases, and as we achieve higher market penetration rates. To the extent our active user growth rate slows, our business performance will become increasingly dependent on our ability to increase levels of user engagement in current and new markets. If people do not perceive our products to be useful, reliable, and trustworthy, we may not be able to attract or retain users or otherwise maintain or increase the frequency and duration of their engagement. A number of other social networking companies that achieved early popularity have since seen their active user bases or levels of engagement decline, in some cases precipitously. There is no guarantee that we will not experience a similar erosion of our active user base or engagement levels. A decrease in user retention, growth, or engagement could render Facebook less attractive to developers and advertisers, which may have a material and adverse impact on our revenue, business, financial condition, and results of operations. Any number of factors could potentially negatively affect user retention, growth, and engagement, including if:

 users increasingly engage with competing products;

 we fail to introduce new and improved products or if we introduce new products or services that are not favorably received;

 we are unable to successfully balance our efforts to provide a compelling user experience with the decisions we make with respect to the frequency, prominence, and size of ads and other commercial content that we display;

 we are unable to continue to develop products for mobile devices that users find engaging, that work with a variety of mobile operating systems and networks, and that achieve a high level of market acceptance;

 there are changes in user sentiment about the quality or usefulness of our products or concerns related to privacy and sharing, safety, security, or other factors;

 we are unable to manage and prioritize information to ensure users are presented with content that is interesting, useful, and relevant to them;

 there are adverse changes in our products that are mandated by legislation, regulatory authorities, or litigation, including settlements or consent decrees;

 technical or other problems prevent us from delivering our products in a rapid and reliable manner or otherwise affect the user experience;

11

 we adopt policies or procedures related to areas such as sharing or user data that are perceived negatively by our users or the general public;

 we fail to provide adequate customer service to users, developers, or advertisers;

 we, our Platform developers, or other companies in our industry are the subject of adverse media reports or other negative publicity; or

 our current or future products, such as the Facebook Platform, reduce user activity on Facebook by making it easier for our users to interact and share on third-party websites.

If we are unable to maintain and increase our user base and user engagement, our revenue, financial results, and future growth potential may be adversely affected.

We generate a substantial majority of our revenue from advertising. The loss of advertisers, or reduction in spending by advertisers with Facebook, could seriously harm our business.

The substantial majority of our revenue is currently generated from third parties advertising on Facebook. In 2009, 2010, and 2011, advertising accounted for 98%, 95%, and 85%, respectively, of our revenue. As is common in the industry, our advertisers typically do not have long-term advertising commitments with us. Many of our advertisers spend only a relatively small portion of their overall advertising budget with us. In addition, advertisers may view some of our products, such as sponsored stories and ads with social context, as experimental and unproven. Advertisers will not continue to do business with us, or they will reduce the prices they are willing to pay to advertise with us, if we do not deliver ads and other commercial content in an effective manner, or if they do not believe that their investment in advertising with us will generate a competitive return relative to other alternatives. Our advertising revenue could be adversely affected by a number of other factors, including:

 decreases in user engagement, including time spent on Facebook;

 increased user access to and engagement with Facebook through our mobile products, where we do not currently directly generate meaningful revenue, particularly to the extent that mobile engagement is substituted for engagement with Facebook on personal computers where we monetize usage by displaying ads and other commercial content;

 product changes or inventory management decisions we may make that reduce the size, frequency, or relative prominence of ads and other commercial content displayed on Facebook;

 our inability to improve our analytics and measurement solutions that demonstrate the value of our ads and other commercial content;

 decisions by advertisers to use our free products, such as Facebook Pages, instead of advertising on Facebook;

 loss of advertising market share to our competitors;

 adverse legal developments relating to advertising, including legislative and regulatory developments and developments in litigation;

 adverse media reports or other negative publicity involving us, our Platform developers, or other companies in our industry;

 our inability to create new products that sustain or increase the value of our ads and other commercial content;

 the degree to which users opt out of social ads or otherwise limit the potential audience of commercial content;

 changes in the way online advertising is priced;

12

 the impact of new technologies that could block or obscure the display of our ads and other commercial content; and

 the impact of macroeconomic conditions and conditions in the advertising industry in general.

The occurrence of any of these or other factors could result in a reduction in demand for our ads and other commercial content, which may reduce the prices we receive for our ads and other commercial content, or cause advertisers to stop advertising with us altogether, either of which would negatively affect our revenue and financial results.

Growth in use of Facebook through our mobile products, where we do not currently display ads, as a substitute for use on personal computers may negatively affect our revenue and financial results.

We had more than 425 million MAUs who used Facebook mobile products in December 2011. We anticipate that the rate of growth in mobile users will continue to exceed the growth rate of our overall MAUs for the foreseeable future, in part due to our focus on developing mobile products to encourage mobile usage of Facebook. Although the substantial majority of our mobile users also access and engage with Facebook on personal computers where we display advertising, our users could decide to increasingly access our products primarily through mobile devices. We do not currently directly generate any meaningful revenue from the use of Facebook mobile products, and our ability to do so successfully is unproven. Accordingly, if users continue to increasingly access Facebook mobile products as a substitute for access through personal computers, and if we are unable to successfully implement monetization strategies for our mobile users, our revenue and financial results may be negatively affected.

Facebook user growth and engagement on mobile devices depend upon effective operation with mobile operating systems, networks, and standards that we do not control.

There is no guarantee that popular mobile devices will continue to feature Facebook, or that mobile device users will continue to use Facebook rather than competing products. We are dependent on the interoperability of Facebook with popular mobile operating systems that we do not control, such as Android and iOS, and any changes in such systems that degrade our products functionality or give preferential treatment to competitive products could adversely affect Facebook usage on mobile devices. Additionally, in order to deliver high quality mobile products, it is important that our products work well with a range of mobile technologies, systems, networks, and standards that we do not control. We may not be successful in developing relationships with key participants in the mobile industry or in developing products that operate effectively with these technologies, systems, networks, or standards. In the event that it is more difficult for our users to access and use Facebook on their mobile devices, or if our users choose not to access or use Facebook on their mobile devices or use mobile products that do not offer access to Facebook, our user growth and user engagement could be harmed.

We may not be successful in our efforts to grow and further monetize the Facebook Platform.

We have made and are continuing to make major investments to enable developers to build applications (apps) and websites that integrate with the Facebook Platform. Existing and prospective Platform developers may not be successful in building apps or websites that create and maintain user engagement. Additionally, developers may choose to build on other platforms, including mobile platforms controlled by third parties, rather than building on the Facebook Platform. We are continuously seeking to balance the distribution objectives of our Platform developers with our desire to provide an optimal user experience, and we may not be successful in achieving a balance that continues to attract and retain Platform developers. From time to time, we have taken actions to reduce the volume of communications from apps to users on Facebook with the objective of enhancing the user experience, and such actions have reduced distribution from, user engagement with, and our monetization opportunities from, apps on Facebook. In some instances, these actions have adversely affected our relationships with Platform developers. If we are not successful in our efforts to grow our Platform or if we are unable to build and maintain good relations with Platform developers, our user growth and user engagement and our financial results may be adversely affected.

13

Additionally, we may not be successful in further monetizing the Facebook Platform. We currently monetize the Facebook Platform in several ways, including ads on pages generated by apps on Facebook, direct advertising on Facebook purchased by Platform developers to drive traffic to their apps and websites, and fees from our Platform developers use of our Payments infrastructure to sell virtual and digital goods to users. Apps built by developers of social games, particularly Zynga, are currently responsible for substantially all of our revenue derived from Payments. If the Platform apps that currently generate revenue fail to grow or maintain their users and engagement, if Platform developers do not continue to introduce new apps that attract users and create engagement, if Platform developers reduce their advertising on Facebook, if we fail to maintain good relationships with Platform developers or attract new developers, or if Platform apps outside of social games do not gain popularity and generate significant revenue, our financial performance and ability to grow revenue could be adversely affected.

Our business is highly competitive. Competition presents an ongoing threat to the success of our business.

We face significant competition in almost every aspect of our business, including from companies such as Google, Microsoft, and Twitter, which offer a variety of Internet products, services, content, and online advertising offerings, as well as from mobile companies and smaller Internet companies that offer products and services that may compete with specific Facebook features. We also face competition from traditional and online media businesses for advertising budgets. We compete broadly with Googles social networking offerings, including Google+, and also with other, largely regional, social networks that have strong positions in particular countries, including Cyworld in Korea, Mixi in Japan, Orkut (owned by Google) in Brazil and India, and vKontakte in Russia. We would also face competition from companies in China such as Renren, Sina, and Tencent in the event that we are able to access the market in China in the future. As we introduce new products, as our existing products evolve, or as other companies introduce new products and services, we may become subject to additional competition.

Some of our current and potential competitors have significantly greater resources and better competitive positions in certain markets than we do. These factors may allow our competitors to respond more effectively than us to new or emerging technologies and changes in market requirements. Our competitors may develop products, features, or services that are similar to ours or that achieve greater market acceptance, may undertake more far-reaching and successful product development efforts or marketing campaigns, or may adopt more aggressive pricing policies. In addition, Platform partners may use information shared by our users through the Facebook Platform in order to develop products or features that compete with us. Certain competitors, including Google, could use strong or dominant positions in one or more markets to gain competitive advantage against us in areas where we operate including: by integrating competing social networking platforms or features into products they control such as search engines, web browsers, or mobile device operating systems; by making acquisitions; or by making access to Facebook more difficult. As a result, our competitors may acquire and engage users at the expense of the growth or engagement of our user base, which may negatively affect our business and financial results.

We believe that our ability to compete effectively depends upon many factors both within and beyond our control, including:

 the usefulness, ease of use, performance, and reliability of our products compared to our competitors;

 the size and composition of our user base;

 the engagement of our users with our products;

 the timing and market acceptance of products, including developments and enhancements to our or our competitors products;

 our ability to monetize our products, including our ability to successfully monetize mobile usage;

 the frequency, size, and relative prominence of the ads and other commercial content displayed by us or our competitors;

14

 customer service and support efforts;

 marketing and selling efforts;

 our ability to establish and maintain developers interest in building on the Facebook Platform;

 changes mandated by legislation, regulatory authorities, or litigation, including settlements and consent decrees, some of which may have a disproportionate effect on us;

 acquisitions or consolidation within our industry, which may result in more formidable competitors;

 our ability to attract, retain, and motivate talented employees, particularly software engineers;

 our ability to cost-effectively manage and grow our operations; and

 our reputation and brand strength relative to our competitors.

If we are not able to effectively compete, our user base and level of user engagement may decrease, which could make us less attractive to developers and advertisers and materially and adversely affect our revenue and results of operations.

Action by governments to restrict access to Facebook in their countries could substantially harm our business and financial results.

It is possible that governments of one or more countries may seek to censor content available on Facebook in their country, restrict access to Facebook from their country entirely, or impose other restrictions that may affect the accessibility of Facebook in their country for an extended period of time or indefinitely. For example, access to Facebook has been or is currently restricted in whole or in part in China, Iran, North Korea, and Syria. In addition, governments in other countries may seek to restrict access to Facebook if they consider us to be in violation of their laws. In the event that access to Facebook is restricted, in whole or in part, in one or more countries or our competitors are able to successfully penetrate geographic markets that we cannot access, our ability to retain or increase our user base and user engagement may be adversely affected, we may not be able to maintain or grow our revenue as anticipated, and our financial results could be adversely affected.

Our efforts to expand the Facebook Platform may result in users increasingly engaging with our Platform developers Facebook-integrated websites instead of engaging on Facebook, which may negatively affect our advertising revenue and harm our business.

We actively support Platform developers efforts to develop products that integrate with Facebook on the developers websites. Our Platform developers may choose to prioritize building or supporting Facebook-integrated websites as opposed to building or supporting apps that run on the Facebook website. When users visit a Platform partners Facebook-integrated website, we do not deliver advertisements, whereas we would have displayed advertisements to these users if their activity had taken place on the Facebook website. If Facebook-integrated websites draw users away from our website, it may reduce or slow the growth of our user activity that generates advertising opportunities, which could negatively affect our advertising revenue. Although we believe that there are significant long-term benefits to Facebook resulting from increased engagement on Facebook-integrated websites, these benefits may not offset the possible loss of advertising revenue, in which case our business could be harmed.

Our new products and changes to existing products could fail to attract or retain users or generate revenue.

Our ability to retain, increase, and engage our user base and to increase our revenue will depend heavily on our ability to create successful new products, both independently and in conjunction with Platform developers or other third parties. We may introduce significant changes to our existing products or develop and introduce new and unproven products, including using technologies with which we have little or no prior development or operating experience. If new or enhanced products fail to engage users, developers, or advertisers, we may fail to

15

attract or retain users or to generate sufficient revenue, operating margin, or other value to justify our investments, and our business may be adversely affected. In the future, we may invest in new products and initiatives to generate revenue, but there is no guarantee these approaches will be successful. If we are not successful with new approaches to monetization, we may not be able to maintain or grow our revenue as anticipated or recover any associated development costs, and our financial results could be adversely affected.

Our culture emphasizes rapid innovation and prioritizes user engagement over short-term financial results.

We have a culture that encourages employees to quickly develop and launch new and innovative products. As our business grows and becomes more complex, our cultural emphasis on moving quickly may result in unintended outcomes or decisions that are poorly received by users, developers, or advertisers. Our culture also prioritizes our user engagement over short-term financial results, and we frequently make product decisions that may reduce our short-term revenue or profitability if we believe that the decisions are consistent with our mission and benefit the aggregate user experience and will thereby improve our financial performance over the long term. These decisions may not produce the long-term benefits that we expect, in which case our user growth and engagement, our relationships with developers and advertisers, and our business and results of operations could be harmed.

If we are not able to maintain and enhance our brand, or if events occur that damage our reputation and brand, our ability to expand our base of users, developers, and advertisers may be impaired, and our business and financial results may be harmed.

We believe that the Facebook brand has significantly contributed to the success of our business. We also believe that maintaining and enhancing our brand is critical to expanding our base of users, developers, and advertisers. Many of our new users are referred by existing users, and therefore we strive to ensure that our users remain favorably inclined towards Facebook. Maintaining and enhancing our brand will depend largely on our ability to continue to provide useful, reliable, trustworthy, and innovative products, which we may not do successfully. We may introduce new products or terms of service that users do not like, which may negatively affect our brand. Additionally, the actions of our Platform developers may affect our brand if users do not have a positive experience using third-party apps and websites integrated with Facebook. We have in the past experienced, and we expect that in the future we will continue to experience, media, legislative, or regulatory scrutiny of our decisions regarding user privacy or other issues, which may adversely affect our reputation and brand. We also may fail to provide adequate customer service, which could erode confidence in our brand. Maintaining and enhancing our brand may require us to make substantial investments and these investments may not be successful. If we fail to successfully promote and maintain the Facebook brand or if we incur excessive expenses in this effort, our business and financial results may be adversely affected.

Improper access to or disclosure of our users information could harm our reputation and adversely affect our business.

Our efforts to protect the information that our users have chosen to share using Facebook may be unsuccessful due to the actions of third parties, software bugs or other technical malfunctions, employee error or malfeasance, or other factors. In addition, third parties may attempt to fraudulently induce employees or users to disclose information in order to gain access to our data or our users data. If any of these events occur, our users information could be accessed or disclosed improperly. Our Data Use Policy governs the use of information that users have chosen to share using Facebook and how that information may be used by third parties. Some Platform developers may store information provided by our users through apps on the Facebook Platform or websites integrated with Facebook. If these third parties or Platform developers fail to adopt or adhere to adequate data security practices or fail to comply with our terms and policies, or in the event of a breach of their networks, our users data may be improperly accessed or disclosed. Any incidents involving unauthorized access to or improper use of the information of our users could damage our reputation and our brand and diminish our competitive position. In addition, the affected users or government authorities could initiate legal or regulatory

16

action against us in connection with such incidents, which could cause us to incur significant expense and liability or result in orders or consent decrees forcing us to modify our business practices. Any of these events could have a material and adverse effect on our business, reputation, or financial results.

Unfavorable media coverage could negatively affect our business.

We receive a high degree of media coverage around the world. Unfavorable publicity regarding, for example, our privacy practices, product changes, product quality, litigation or regulatory activity, or the actions of our Platform developers or our users, could adversely affect our reputation. Such negative publicity also could have an adverse effect on the size, engagement, and loyalty of our user base and result in decreased revenue, which could adversely affect our business and financial results.

Our financial results will fluctuate from quarter to quarter, which makes them difficult to predict.

Our quarterly financial results have fluctuated in the past and will fluctuate in the future. Additionally, we have a limited operating history with the current scale of our business, which makes it difficult to forecast our future results. As a result, you should not rely upon our past quarterly financial results as indicators of future performance. You should take into account the risks and uncertainties frequently encountered by companies in rapidly evolving markets. Our financial results in any given quarter can be influenced by numerous factors, many of which we are unable to predict or are outside of our control, including:

 our ability to maintain and grow our user base and user engagement;

 our ability to attract and retain advertisers in a particular period;

 seasonal fluctuations in spending by our advertisers;

 the number of ads shown to users;

 the pricing of our ads and other products;

 our ability to increase payments and other fees revenue;

 the diversification and growth of revenue sources beyond current advertising and Payments;

 the development and introduction of new products or services by us or our competitors;

 increases in marketing, sales, and other operating expenses that we may incur to grow and expand our operations and to remain competitive;

 our ability to maintain gross margins and operating margins;

 our ability to obtain equipment and components for our data centers and other technical infrastructure in a timely and cost-effective manner;

 system failures or breaches of security or privacy;

 inaccessibility of Facebook due to third-party actions;

 share-based compensation expense including approximately $ million that we will incur in the quarter of the completion of our initial public offering in connection with the vesting of restricted stock units (RSUs) granted prior to 2011;

 adverse litigation judgments, settlements, or other litigation-related costs;

 changes in the legislative or regulatory environment, including with respect to privacy, or enforcement by government regulators, including fines, orders, or consent decrees;

 fluctuations in currency exchange rates and changes in the proportion of our revenue and expenses denominated in foreign currencies;

17

 fluctuations in the market values of our portfolio investments and in interest rates;

 changes in U.S. generally accepted accounting principles; and

 changes in business or macroeconomic conditions.

We currently generate significant revenue as a result of our relationship with Zynga, and, if we are unable to successfully maintain this relationship, our financial results could be harmed.

In 2011, Zynga accounted for approximately 12% of our revenue, which amount was comprised of revenue derived from payments processing fees related to Zyngas sales of virtual goods and from direct advertising purchased by Zynga. Additionally, Zyngas apps generate a significant number of pages on which we display ads from other advertisers. If the use of Zynga games on our Platform declines, if Zynga launches games on or migrates games to competing platforms, or if we fail to maintain good relations with Zynga, we may lose Zynga as a significant Platform developer and our financial results may be adversely affected.

We expect our rates of growth will decline in the future.

We believe that our rates of user and revenue growth will decline over time. For example, our annual revenue grew 154% from 2009 to 2010 and 88% from 2010 to 2011. Historically, our user growth has been a primary driver of growth in our revenue. Our user growth and revenue growth rates will inevitably slow as we achieve higher market penetration rates, as our revenue increases to higher levels, and as we experience increased competition. As our growth rates decline, investors perceptions of our business may be adversely affected and the market price of our Class A common stock could decline.

Our business is subject to complex and evolving U.S. and foreign laws and regulations regarding privacy, data protection, and other matters. Many of these laws and regulations are subject to change and uncertain interpretation, and could result in claims, changes to our business practices, increased cost of operations, or declines in user growth or engagement, or otherwise harm our business.

We are subject to a variety of laws and regulations in the United States and abroad that involve matters central to our business, including user privacy, rights of publicity, data protection, content, intellectual property, distribution, electronic contracts and other communications, competition, protection of minors, consumer protection, taxation, and online payment services. Foreign data protection, privacy, and other laws and regulations are often more restrictive than those in the United States. These U.S. federal and state and foreign laws and regulations are constantly evolving and can be subject to significant change. In addition, the application and interpretation of these laws and regulations are often uncertain, particularly in the new and rapidly evolving industry in which we operate. For example, the interpretation of some laws and regulations that govern the use of names and likenesses in connection with advertising and marketing activities is unsettled and developments in this area could affect the manner in which we design our products, as well as our terms of use. A number of proposals are pending before federal, state, and foreign legislative and regulatory bodies that could significantly affect our business. For example, a revision to the 1995 European Union Data Protection Directive is currently being considered by European legislative bodies that may include more stringent operational requirements for data processors and significant penalties for non-compliance. Similarly, there have been a number of recent legislative proposals in the United States, at both the federal and state level, that would impose new obligations in areas such as privacy and liability for copyright infringement by third parties. These existing and proposed laws and regulations can be costly to comply with and can delay or impede the development of new products, result in negative publicity, increase our operating costs, require significant management time and attention, and subject us to claims or other remedies, including fines or demands that we modify or cease existing business practices.

18

We have been subject to regulatory investigations and settlements and we expect to continue to be subject to such proceedings in the future, which could cause us to incur substantial costs or require us to change our business practices in a manner materially adverse to our business.

From time to time, we receive inquiries from regulators regarding our compliance with laws and other matters. For example, in 2011, we reached agreement with the Federal Trade Commission (FTC) to resolve an investigation into various practices by entering into a 20-year settlement agreement that, among other things, requires us to establish and refine certain practices with respect to treatment of user data and privacy settings and also requires that we complete bi-annual independent privacy audits. As another example, in 2011 the Irish Data Protection Commissioner (DPC) conducted an audit of the data, security, and privacy practices and policies of Facebook Ireland, which is the data controller for Facebook users outside the United States and Canada, and released a report of its conclusions in December 2011. The FTC and DPC have investigated and audited aspects of our products and practices, and we expect to continue to be the subject of regulatory investigations and audits in the future by these and other regulators throughout the world.

It is possible that a regulatory inquiry might result in changes to our policies or practices. Violation of existing or future regulatory orders or consent decrees could subject us to substantial monetary fines and other penalties that could negatively affect our financial condition and results of operations. In addition, it is possible that future orders issued by, or enforcement actions initiated by, regulatory authorities could cause us to incur substantial costs or require us to change our business practices in a manner materially adverse to our business.

If we are unable to protect our intellectual property, the value of our brand and other intangible assets may be diminished, and our business may be adversely affected.

We rely and expect to continue to rely on a combination of confidentiality and license agreements with our employees, consultants, and third parties with whom we have relationships, as well as trademark, copyright, patent, trade secret, and domain name protection laws, to protect our proprietary rights. In the United States and internationally, we have filed various applications for protection of certain aspects of our intellectual property, and we currently hold a number of issued patents in multiple jurisdictions. However, third parties may knowingly or unknowingly infringe our proprietary rights, third parties may challenge proprietary rights held by us, and pending and future trademark and patent applications may not be approved. In addition, effective intellectual property protection may not be available in every country in which we operate or intend to operate our business. In any or all of these cases, we may be required to expend significant time and expense in order to prevent infringement or to enforce our rights. Although we have taken measures to protect our proprietary rights, there can be no assurance that others will not offer products or concepts that are substantially similar to ours and compete with our business. In addition, we regularly contribute software source code under open source licenses and have made other technology we developed available under other open licenses, and we include open source software in our products. For example, we have contributed certain specifications and designs related to our data center equipment to the Open Compute Project Foundation, a non-profit entity that shares and develops such information with the technology community, under the Open Web Foundation License. As a result of our open source contributions and the use of open source in our products, we may license or be required to license innovations that turn out to be material to our business and may also be exposed to increased litigation risk. If the protection of our proprietary rights is inadequate to prevent unauthorized use or appropriation by third parties, the value of our brand and other intangible assets may be diminished and competitors may be able to more effectively mimic our service and methods of operations. Any of these events could have an adverse effect on our business and financial results.

We are currently, and expect to be in the future, party to patent lawsuits and other intellectual property rights claims that are expensive and time consuming, and, if resolved adversely, could have a significant impact on our business, financial condition, or results of operations.

Companies in the Internet, technology, and media industries own large numbers of patents, copyrights, trademarks, and trade secrets, and frequently enter into litigation based on allegations of infringement,

19

misappropriation, or other violations of intellectual property or other rights. In addition, various non-practicing entities that own patents and other intellectual property rights often attempt to aggressively assert their rights in order to extract value from technology companies. We presently are involved in many such lawsuits, and as we face increasing competition and gain an increasingly high profile, including in connection with our initial public offering, we expect the number of patent and other intellectual property claims against us to grow. In addition, from time to time we may introduce new products, including in areas where we currently do not compete, which could increase our exposure to patent and other intellectual property claims from competitors and non-practicing entities.

Although the results of litigation and claims cannot be predicted with certainty, we do not believe that the final outcome of intellectual property claims that we currently face will have a material adverse effect on our business, financial condition, or results of operations. However, defending patent and other intellectual property claims is costly and can impose a significant burden on management and employees, we may receive unfavorable preliminary or interim rulings in the course of litigation, and there can be no assurances that favorable final outcomes will be obtained in all cases. We may decide to settle such lawsuits and disputes on terms that are unfavorable to us. Similarly, if any litigation to which we are a party is resolved adversely, we may be subject to an unfavorable judgment that may not be reversed upon appeal. The terms of such a settlement or judgment may require us to cease some or all of our operations or pay substantial amounts to the other party. In addition, we may have to seek a license to continue practices found to be in violation of a third partys rights, which may not be available on reasonable terms, or at all, and may significantly increase our operating costs and expenses. As a result, we may also be required to develop alternative non-infringing technology or practices or discontinue the practices. The development of alternative non-infringing technology or practices could require significant effort and expense or may not be feasible. Our business, financial condition, or results of operations could be adversely affected as a result.

We are involved in numerous class action lawsuits and other litigation matters that are expensive and time consuming, and, if resolved adversely, could harm our business, financial condition, or results of operations.

In addition to intellectual property claims, we are also involved in numerous other lawsuits, including putative class action lawsuits brought by users and advertisers, many of which claim statutory damages, and we anticipate that we will continue to be a target for numerous lawsuits in the future. Because we have hundreds of millions of users, the plaintiffs in class action cases filed against us typically claim enormous monetary damages even if the alleged per-user harm is small or non-existent. Any litigation to which we are a party may result in an onerous or unfavorable judgment that may not be reversed upon appeal, or we may decide to settle lawsuits on similarly unfavorable terms. Any such negative outcome could result in payments of substantial monetary damages or fines, or changes to our products or business practices, and accordingly our business, financial condition, or results of operations could be materially and adversely affected. Although the results of lawsuits and claims cannot be predicted with certainty, we do not believe that the final outcome of those matters that we currently face will have a material adverse effect on our business, financial condition, or results of operations. However, defending these claims is costly and can impose a significant burden on management and employees, and we may receive unfavorable preliminary or interim rulings in the course of litigation, which could adversely affect the market price of our Class A common stock. There can be no assurances that a favorable final outcome will be obtained in all cases.

Our CEO has control over key decision making as a result of his control of a majority of our voting stock.

As a result of voting agreements with certain stockholders, together with the shares he holds, Mark Zuckerberg, our founder, Chairman, and CEO, will be able to exercise voting rights with respect to an aggregate of shares of common stock, representing a majority of the voting power of our outstanding capital stock following our initial public offering. As a result, Mr. Zuckerberg has the ability to control the outcome of matters submitted to our stockholders for approval, including the election of directors and any merger, consolidation, or sale of all or substantially all of our assets. In addition, Mr. Zuckerberg has the ability to control the management and affairs of our company as a result of his position as our CEO and his ability to control the election of our directors. Additionally, in the event that Mr. Zuckerberg controls our company at the time of his death, control

20

may be transferred to a person or entity that he designates as his successor. As a board member and officer, Mr. Zuckerberg owes a fiduciary duty to our stockholders and must act in good faith in a manner he reasonably believes to be in the best interests of our stockholders. As a stockholder, even a controlling stockholder, Mr. Zuckerberg is entitled to vote his shares, and shares over which he has voting control as a result of voting agreements, in his own interests, which may not always be in the interests of our stockholders generally. For a description of these voting agreements, see Description of Capital StockVoting Agreements.

We anticipate that we will expend substantial funds in connection with the tax liabilities that arise upon the initial settlement of RSUs following our initial public offering and the manner in which we fund that expenditure may have an adverse effect.

We anticipate that we will expend substantial funds to satisfy tax withholding and remittance obligations on a date approximately six months following our initial public offering, when we will settle a portion of our RSUs granted prior to January 1, 2011 (Pre-2011 RSUs). On the settlement date, we plan to withhold and remit income taxes at applicable minimum statutory rates based on the then-current value of the underlying shares. We currently expect that the average of these withholding tax rates will be approximately 45%. If the price of our common stock at the time of settlement were equal to the midpoint of the price range on the cover page of this prospectus, we estimate that this tax obligation would be approximately $ billion in the aggregate. The amount of this obligation could be higher or lower, depending on the price of our shares on the RSU settlement date. To settle these RSUs, assuming a 45% tax withholding rate, we anticipate that we will net settle the awards by delivering approximately shares of Class B common stock to RSU holders and simultaneously withholding approximately shares of Class B common stock. In connection with this net settlement we will withhold and remit the tax liabilities on behalf of the RSU holders in cash to the applicable tax authorities.

To fund the withholding and remittance obligation, we expect to sell equity securities near the settlement date in an amount that is substantially equivalent to the number of shares of common stock that we withhold in connection with the initial settlement of the Pre-2011 RSUs, such that the newly issued shares should not be dilutive. However, in the event that we issue equity securities, we cannot assure you that we will be able to successfully match the proceeds to the amount of this tax liability. In addition, any such equity financing could result in a decline in our stock price. If we elect not to fully fund our withholding and remittance obligations through the issuance of equity or we are unable to complete such an offering due to market conditions or otherwise, we may choose to borrow funds from our credit facility, use a substantial portion of our existing cash, or rely upon a combination of these alternatives. In the event that we elect to satisfy our withholding and remittance obligations in whole or in part by drawing on our credit facility, our interest expense and principal repayment requirements could increase significantly, which could have an adverse effect on our financial results.

We cannot be certain that additional financing will be available on reasonable terms when required, or at all.

From time to time, we may need additional financing, whether in connection with our RSU tax obligation or otherwise. Our ability to obtain additional financing, if and when required, will depend on investor demand, our operating performance, the condition of the capital markets, and other factors. To the extent we draw on our credit facility to fund the RSU tax obligation, we may need to raise additional funds and we cannot assure you that additional financing will be available to us on favorable terms when required, or at all. If we raise additional funds through the issuance of equity, equity-linked or debt securities, those securities may have rights, preferences, or privileges senior to the rights of our Class A common stock, and our existing stockholders may experience dilution.

Our costs may grow more quickly than our revenue, harming our business and profitability.

Providing our products to our users is costly and we expect our expenses to continue to increase in the future as we broaden our user base, as users increase the number of connections and amount of data they share with us, as we develop and implement new product features that require more computing infrastructure, and as we hire

21

additional employees. Historically, our costs have increased each year due to these factors and we expect to continue to incur increasing costs, in particular for servers, storage, power, and data centers, to support our anticipated future growth. We expect to continue to invest in our global infrastructure in order to provide our products rapidly and reliably to all users around the world, including in countries where we do not expect significant short-term monetization. Our expenses may be greater than we anticipate, and our investments to make our business and our technical infrastructure more efficient may not be successful. In addition, we may increase marketing, sales, and other operating expenses in order to grow and expand our operations and to remain competitive. Increases in our costs may adversely affect our business and profitability.

Our business is dependent on our ability to maintain and scale our technical infrastructure, and any significant disruption in our service could damage our reputation, result in a potential loss of users and engagement, and adversely affect our financial results.

Our reputation and ability to attract, retain, and serve our users is dependent upon the reliable performance of Facebook and our underlying technical infrastructure. Our systems may not be adequately designed with the necessary reliability and redundancy to avoid performance delays or outages that could be harmful to our business. If Facebook is unavailable when users attempt to access it, or if it does not load as quickly as they expect, users may not return to our website as often in the future, or at all. As our user base and the amount and types of information shared on Facebook continue to grow, we will need an increasing amount of technical infrastructure, including network capacity, and computing power, to continue to satisfy the needs of our users. It is possible that we may fail to effectively scale and grow our technical infrastructure to accommodate these increased demands. In addition, our business is subject to interruptions, delays, or failures resulting from earthquakes, other natural disasters, terrorism, or other catastrophic events.

A substantial portion of our network infrastructure is provided by third parties. Any disruption or failure in the services we receive from these providers could harm our ability to handle existing or increased traffic and could significantly harm our business. Any financial or other difficulties these providers face may adversely affect our business, and we exercise little control over these providers, which increases our vulnerability to problems with the services they provide.

We recently began to own and build key portions of our technical infrastructure, and, because of our limited experience in this area, we could experience unforeseen difficulties.

In 2011, we began serving our products from data centers owned by Facebook using servers specifically designed for us. We plan to continue to significantly expand the size of our infrastructure, primarily through data centers that we design and own. The infrastructure expansion we are undertaking is complex, and unanticipated delays in the completion of these projects or availability of components may lead to increased project costs, operational inefficiencies, or interruptions in the delivery or degradation of the quality of our products. In addition, there may be issues related to this infrastructure that are not identified during the testing phases of design and implementation, which may only become evident after we have started to fully utilize the underlying equipment, that could further degrade the user experience or increase our costs.

Our software is highly technical, and if it contains undetected errors, our business could be adversely affected.

Our products incorporate software that is highly technical and complex. Our software has contained, and may now or in the future contain, undetected errors, bugs, or vulnerabilities. Some errors in our software code may only be discovered after the code has been released. Any errors, bugs, or vulnerabilities discovered in our code after release could result in damage to our reputation, loss of users, loss of revenue, or liability for damages, any of which could adversely affect our business and financial results.

22

We cannot assure you that we will effectively manage our growth.

Our employee headcount and the scope and complexity of our business have increased significantly, with the number of full-time employees increasing from 2,127 as of December 31, 2010, to 3,200 as of December 31, 2011, and we expect headcount growth to continue for the foreseeable future. The growth and expansion of our business and products create significant challenges for our management, operational, and financial resources, including managing multiple relations with users, advertisers, Platform developers, and other third parties. In the event of continued growth of our operations or in the number of our third-party relationships, our information technology systems or our internal controls and procedures may not be adequate to support our operations. In addition, some members of our management do not have significant experience managing a large global business operation, so our management may not be able to manage such growth effectively. To effectively manage our growth, we must continue to improve our operational, financial, and management processes and systems and to effectively expand, train, and manage our employee base. As our organization continues to grow, and we are required to implement more complex organizational management structures, we may find it increasingly difficult to maintain the benefits of our corporate culture, including our ability to quickly develop and launch new and innovative products. This could negatively affect our business performance.

The loss of one or more of our key personnel, or our failure to attract and retain other highly qualified personnel in the future, could harm our business.

We currently depend on the continued services and performance of our key personnel, including Mark Zuckerberg and Sheryl K. Sandberg. In addition, many of our key technologies and systems are custom-made for our business by our personnel. The loss of key personnel, including members of management as well as key engineering, product development, marketing, and sales personnel, could disrupt our operations and have an adverse effect on our business.

As we continue to grow, we cannot guarantee we will continue to attract the personnel we need to maintain our competitive position. In particular, we intend to hire a significant number of engineering and sales personnel in 2012, and we expect to face significant competition from other companies in hiring such personnel, particularly in the San Francisco Bay Area. As we mature, the incentives to attract, retain, and motivate employees provided by our equity awards or by future arrangements, such as through cash bonuses, may not be as effective as in the past. Additionally, we have a number of current employees whose equity ownership in our company gives them a substantial amount of personal wealth. Likewise, we have a number of current employees whose equity awards are fully vested and shortly after the completion of our initial public offering will be entitled to receive substantial amounts of our capital stock. As a result, it may be difficult for us to continue to retain and motivate these employees, and this wealth could affect their decisions about whether or not they continue to work for us. If we do not succeed in attracting, hiring, and integrating excellent personnel, or retaining and motivating existing personnel, we may be unable to grow effectively.

We may incur liability as a result of information retrieved from or transmitted over the Internet or posted to Facebook and claims related to our products.

We have faced, currently face, and will continue to face claims relating to information that is published or made available on Facebook. In particular, the nature of our business exposes us to claims related to defamation, intellectual property rights, rights of publicity and privacy, and personal injury torts. This risk is enhanced in certain jurisdictions outside the United States where our protection from liability for third-party actions may be unclear and where we may be less protected under local laws than we are in the United States. We could incur significant costs investigating and defending such claims and, if we are found liable, significant damages. If any of these events occur, our business and financial results could be adversely affected.

23

Computer malware, viruses, hacking and phishing attacks, and spamming could harm our business and results of operations.

Computer malware, viruses, and computer hacking and phishing attacks have become more prevalent in our industry, have occurred on our systems in the past, and may occur on our systems in the future. Because of our prominence, we believe that we are a particularly attractive target for such attacks. Though it is difficult to determine what, if any, harm may directly result from any specific interruption or attack, any failure to maintain performance, reliability, security, and availability of our products and technical infrastructure to the satisfaction of our users may harm our reputation and our ability to retain existing users and attract new users.

In addition, spammers attempt to use our products to send targeted and untargeted spam messages to users, which may embarrass or annoy users and make Facebook less user-friendly. We cannot be certain that the technologies and employees that we have to attempt to defeat spamming attacks will be able to eliminate all spam messages from being sent on our platform. As a result of spamming activities, our users may use Facebook less or stop using our products altogether.

Payment transactions on the Facebook Platform may subject us to additional regulatory requirements and other risks that could be costly and difficult to comply with or that could harm our business.

Our users can use the Facebook Platform to purchase virtual and digital goods from our Platform developers using our Payments infrastructure. Depending on how our Payments product evolves, we may be subject to a variety of laws and regulations in the United States, Europe, and elsewhere, including those governing money transmission, gift cards and other prepaid access instruments, electronic funds transfers, anti-money laundering, counter-terrorist financing, gambling, banking and lending, and import and export restrictions. In some jurisdictions, the application or interpretation of these laws and regulations is not clear. To increase flexibility in how our use of Payments may evolve and to mitigate regulatory uncertainty, we have applied for certain money transmitter licenses and expect to apply for additional money transmitter licenses in the United States, which will generally require us to demonstrate compliance with many domestic laws in these areas. Our efforts to comply with these laws and regulations could be costly and result in diversion of management time and effort and may still not guarantee compliance. In the event that we are found to be in violation of any such legal or regulatory requirements, we may be subject to monetary fines or other penalties such as a cease and desist order, or we may be required to make product changes, any of which could have an adverse effect on our business and financial results.

In addition, we may be subject to a variety of additional risks as a result of Payments on the Facebook Platform, including:

 increased costs and diversion of management time and effort and other resources to deal with bad transactions or customer disputes;

 potential fraudulent or otherwise illegal activity by users, developers, employees, or third parties;

 restrictions on the investment of consumer funds used to transact Payments; and

 additional disclosure and reporting requirements.

24

We plan to continue expanding our operations abroad where we have limited operating experience and may be subject to increased business and economic risks that could affect our financial results.

We plan to continue the international expansion of our business operations and the translation of our products. We currently make Facebook available in more than 70 different languages, and we have offices or data centers in more than 20 different countries. We may enter new international markets where we have limited or no experience in marketing, selling, and deploying our products. For example, we continue to evaluate entering China. However, this market has substantial legal and regulatory complexities that have prevented our entry into China to date. If we fail to deploy or manage our operations in international markets successfully, our business may suffer. In addition, we are subject to a variety of risks inherent in doing business internationally, including:

 political, social, or economic instability;

 risks related to the legal and regulatory environment in foreign jurisdictions, including with respect to privacy, and unexpected changes in laws, regulatory requirements, and enforcement;

 potential damage to our brand and reputation due to compliance with local laws, including potential censorship or requirements to provide user information to local authorities;

 fluctuations in currency exchange rates;

 higher levels of credit risk and payment fraud;

 enhanced difficulties of integrating any foreign acquisitions;

 burdens of complying with a variety of foreign laws;

 reduced protection for intellectual property rights in some countries;

 difficulties in staffing and managing global operations and the increased travel, infrastructure, and legal compliance costs associated with multiple international locations;

 compliance with the U.S. Foreign Corrupt Practices Act, the U.K. Bribery Act, and similar laws in other jurisdictions; and

 compliance with statutory equity requirements and management of tax consequences.

If we are unable to expand internationally and manage the complexity of our global operations successfully, our financial results could be adversely affected.

We plan to continue to make acquisitions, which could require significant management attention, disrupt our business, result in dilution to our stockholders, and adversely affect our financial results.

As part of our business strategy, we have made and intend to make acquisitions to add specialized employees, complementary companies, products, or technologies. However, we have not made any large acquisitions to date, and, as a result, our ability to acquire and integrate larger or more significant companies, products, or technologi