The Special Meeting

Sections

THE SPECIAL MEETING

Date, Time and Place

We will hold the special meeting on September 13, 2022, at 10:00 a.m., Pacific time. You may attend the special meeting via a live interactive webcast at http://www.virtualshareholdermeeting.com/TWTR2022SM. You will be able to listen to the special meeting live and vote online. You will need the control number found on your proxy card or voting instruction form in order to participate in the special meeting (including voting your shares). We believe that a virtual meeting provides expanded access, improved communication and cost savings for our stockholders and Twitter.

Purpose of the Special Meeting

At the special meeting, we will ask stockholders to vote on proposals to (1) adopt the merger agreement; (2) approve, on a non-binding, advisory basis, the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; and (3) adjourn the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting.

Attending the Special Meeting

The special meeting will begin at 10:00 a.m., Pacific time. Online check-in will begin a few minutes prior to the special meeting. We encourage you to access the meeting prior to the start time.

As the special meeting is virtual, there will be no physical meeting location. To attend the special meeting, log in at http://www.virtualshareholdermeeting.com/TWTR2022SM. You will need the control number found on your proxy card or voting instruction form in order to participate in the special meeting (including voting your shares). If you encounter technical difficulties accessing the special meeting or during the special meeting, a support line will be available on the login page of the special meeting website.

Once online access to the special meeting is open, stockholders may submit questions pertinent to meeting matters, if any, through the special meeting website. Such questions will be answered during the meeting, subject to time constraints. You will need the control number found on your proxy card or voting instruction form in order to submit questions.

Record Date; Shares Entitled to Vote; Quorum

Only our stockholders as of the close of business on the record date are entitled to notice of, and to vote at, the special meeting. A list of stockholders of record entitled to vote at the special meeting will be available at our corporate offices located at 1355 Market Street, Suite 900, San Francisco, California 94103, during regular business hours for a period of no less than 10 days before the special meeting and on the virtual meeting website during the special meeting.

As of the record date, there were 765,246,152 shares of our common stock outstanding and entitled to vote at the special meeting. Each share of our common stock outstanding as of the close of business on the record date is entitled to one vote per share on each matter submitted for a vote at the special meeting.

The holders of a majority of the voting power of our stock issued and outstanding and entitled to vote, present in person or represented by proxy, shall constitute a quorum.

Vote Required; Abstentions and Broker Non-Votes

Approval of the proposal to adopt the merger agreement requires the affirmative vote of the holders of a majority of the issued and outstanding shares of our common stock as of the record date. Adoption of the merger agreement by our stockholders is a condition to the closing of the merger.

Approval, on a non-binding, advisory basis, of the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger requires the affirmative vote of a majority of the voting power of the shares of our common stock present in person or represented by proxy at the special meeting and entitled to vote on the proposal.

Approval of the proposal to adjourn the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting requires the affirmative vote of a majority of the voting power of the shares of our common stock present in person or represented by proxy at the special meeting and entitled to vote on the proposal.

If a stockholder abstains from voting, that abstention will have the same effect as if the stockholder voted: (1) “AGAINST” the proposal to adopt the merger agreement; (2) “AGAINST” the proposal to approve, on a non-binding, advisory basis, compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; and (3) “AGAINST” the proposal to adjourn the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting. Abstentions will be counted as present for purposes of determining whether a quorum exists.

A “broker non-vote” generally occurs when a bank, broker or other nominee holding shares on your behalf does not vote on a proposal because the bank, broker or other nominee has not received your voting instructions and lacks discretionary power to vote your shares. We do not expect any “broker non-votes” at the special meeting, but if there are any, they will be counted for the purpose of determining whether a quorum is present. If there are broker non-votes, each broker non-vote will count as a vote “AGAINST” the proposal to adopt the merger agreement, but will have no effect on: (1) the proposal to approve, on a non-binding, advisory basis, the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; or (2) the proposal to adjourn the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting.

Shares Held by Twitter’s Directors and Executive Officers and by Mr. Musk

As of the record date, our directors and executive officers beneficially owned and were entitled to vote, in the aggregate, 1,684,502 shares of our common stock, representing approximately 0.2 percent of the shares of our common stock outstanding as of the record date. Twitter has not been informed that any of our directors and executive officers intend to vote any of their shares of our common stock other than: (1) “FOR” the adoption of the merger agreement; (2) ”FOR” the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; and (3) “FOR” the adjournment of the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting.

As of June 30, 2022, Mr. Musk beneficially holds approximately 9.5 percent of our common stock. Pursuant to the merger agreement, Mr. Musk has agreed to retain and not dispose of, and to vote all of his shares of our common stock in favor of the adoption of the merger agreement. As of the record date, our directors and executive officers beneficially owned and were entitled to vote, in the aggregate, 1,684,502 shares of our common stock, representing approximately 0.2 percent of the shares of our common stock outstanding as of the record date. As of the date of this proxy statement, we have not been informed that any of our directors or officers intend to vote their shares other than in favor of adoption of the merger agreement. All such shares of our common stock held beneficially by

Mr. Musk, and by our directors and officers (and any shares held by our former directors and officers) as of the record date that are voted in favor of the adoption of the merger agreement will be counted for purposes of determining whether the proposal to adopt the merger agreement has been approved. Assuming that all such shares of our common stock beneficially held by Mr. Musk, and by our directors and officers as of the record date, are voted in favor of the adoption of the merger agreement, the affirmative vote of stockholders holding an additional 40.2 percent of our common stock is required to adopt the merger agreement. Alternatively, notwithstanding Mr. Musk’s contractual obligation to vote all shares of our common stock beneficially owned by him in favor of the adoption of the merger agreement, assuming that all such shares are not voted in favor of the adoption of the merger agreement but that all shares of our common stock beneficially held by our directors and officers as of the record date are voted in favor of the adoption of the merger agreement, the affirmative vote of stockholders holding an additional 49.8 percent of our common stock would be required to adopt the merger agreement. For additional information regarding beneficial ownership of common stock, see the section of this proxy statement captioned “Security Ownership of Certain Beneficial Owners and Management.”

Voting of Proxies

If your shares are registered in your name with our transfer agent, Computershare Trust Company, N.A., you may vote your shares by returning a signed and dated proxy card (a proxy card and a prepaid reply envelope are enclosed for your convenience), or you may vote at the special meeting using the control number located on the enclosed proxy card. Additionally, you may grant a proxy electronically over the internet or by telephone by following the instructions on your proxy card. You must have your proxy card available, and follow the instructions on the proxy card, in order to grant a proxy electronically over the internet or by telephone.

If you attend the special meeting and wish to vote at the special meeting, you will need the control number located on the enclosed proxy card. Beneficial owners of shares held in “street name” must also provide a “legal proxy” from their bank or broker in order to vote at the special meeting. You are encouraged to vote by proxy even if you plan to attend the special meeting. If you attend the special meeting and vote at the special meeting, your vote will revoke any previously submitted proxy.

All shares represented by properly signed and dated proxies (or proxies granted electronically over the internet or by telephone) will, if received before the special meeting, be voted at the special meeting in accordance with the instructions of the stockholder. Properly signed and dated proxies (or proxies granted electronically over the internet or by telephone) that do not contain voting instructions will be voted: (1) “FOR” adoption of the merger agreement; (2) “FOR” the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; and (3) “FOR” the adjournment of the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting.

If your shares are held in “street name” through a bank, broker or other nominee, you may vote through your bank, broker or other nominee by completing and returning the voting instruction form provided by your bank, broker or other nominee. You may also attend the special meeting and vote at the special meeting if you provide a “legal proxy” from your bank, broker or other nominee giving you the right to vote your shares at the special meeting. If available from your bank, broker or other nominee, you may vote over the internet or telephone through your bank, broker or other nominee by following the instructions on the voting instruction form provided by your bank, broker or other nominee. If you do not (1) return your bank’s, broker’s or other nominee’s voting instruction form; (2) vote over the internet or by telephone through your bank, broker or other nominee; or (3) attend the special meeting and vote at the special meeting with a “legal proxy” from your bank, broker or other nominee, it will have the same effect as if you voted “AGAINST” the proposal to adopt the merger agreement. It will not, however, have any effect on the proposals (1) to approve, on a non-binding, advisory basis, the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; or (2) to adjourn the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional

proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting, except to the extent affecting the obtaining of a quorum at the meeting.

Revocability of Proxies

If you are a stockholder of record, you may change your vote or revoke your proxy at any time before it is voted at the special meeting by:

   

signing another proxy card with a later date and returning it to us prior to the special meeting;

   

submitting a new proxy electronically over the internet or by telephone after the date of the earlier submitted proxy;

   

delivering a written notice of revocation to our Corporate Secretary; or

   

attending the special meeting and voting at the special meeting using the control number on the enclosed proxy card.

If you have submitted a proxy, your attendance at the special meeting, in the absence of voting at the special meeting or submitting an additional proxy or revocation, will not have the effect of revoking your prior proxy.

If you hold your shares of our common stock in “street name” through a bank, broker or other nominee, you should contact your bank, broker or other nominee for instructions regarding how to change your vote. You may also vote at the special meeting if you provide a “legal proxy” from your bank, broker or other nominee giving you the right to vote your shares at the special meeting.

Any adjournment, postponement or other delay of the special meeting, including for the purpose of soliciting additional proxies, will allow our stockholders who have already sent in their proxies to revoke them at any time prior to their use at the special meeting as adjourned, postponed or delayed.

The Twitter Board’s Recommendation

The Twitter Board, after considering various factors described in the section of this proxy statement captioned “The Merger—Recommendation of the Twitter Board and Reasons for the Merger,” has unanimously: (1) determined that the merger agreement is advisable and the merger and the other transactions contemplated by the merger agreement are fair to, advisable and in the best interests of Twitter and its stockholders; and (2) adopted and approved the merger agreement, the merger and the other transactions contemplated by the merger agreement.

The Twitter Board unanimously recommends that you vote: (1) “FOR” the adoption of the merger agreement; (2) “FOR” the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger; and (3) “FOR” the adjournment of the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting.

Adjournment

In addition to the proposals to (1) adopt the merger agreement and (2) approve, on a non-binding, advisory basis, the compensation that will or may become payable by Twitter to our named executive officers in connection with the merger, our stockholders are also being asked to approve a proposal to adjourn the special meeting, from time to time, to a later date or dates, if necessary or appropriate, to solicit additional proxies if there are insufficient votes to adopt the merger agreement at the time of the special meeting. Subject to the limitations on such actions set forth in the merger agreement, the Twitter Board may cancel, postpone or reschedule any previously scheduled special meeting at any

time, before or after the notice for such meeting has been sent to the stockholders. If the special meeting is adjourned or postponed, our stockholders who have already submitted their proxies will be able to revoke them at any time before they are voted at the special meeting.

Solicitation of Proxies

Twitter, on behalf of the Twitter Board, is soliciting proxies from our stockholders for the special meeting. Under applicable SEC rules and regulations, the members of the Twitter Board are “participants” with respect to the solicitation of proxies in connection with the special meeting. In addition, under applicable SEC rules and regulations and by virtue of filings made by Mr. Musk, he may be deemed to be a participant in the solicitation of proxies from our stockholders for the special meeting. Twitter is not responsible for any statements of, or filings made by, Mr. Musk.

The expense of soliciting proxies will be borne by Twitter. We have retained Innisfree M&A Incorporated, a professional proxy solicitation firm, to assist in the solicitation of proxies, and provide related advice and informational support during the solicitation process, for a fee of up to $50,000, plus reasonable out-of-pocket expenses. We will indemnify this firm against losses arising out of its provisions of these services on our behalf. In addition, we may reimburse banks, brokers and other nominees representing beneficial owners of shares of our common stock for their expenses in forwarding soliciting materials to such beneficial owners. Proxies may also be solicited by our directors, officers and employees, personally or by telephone, email, fax or over the internet. No additional compensation will be paid for such services.

Anticipated Date of Completion of the Merger

We currently expect to complete the merger in 2022. However, the exact timing of completion of the merger, if at all, cannot be predicted because the merger is subject to the closing conditions specified in the merger agreement, many of which are outside of our control.

Appraisal Rights

If the merger is consummated and certain conditions set forth in Section 262(g) of the DGCL are satisfied, our stockholders who (1) do not vote in favor of the adoption of the merger agreement (whether by voting against the adoption of the merger agreement, abstaining or otherwise not voting with respect to the adoption of the merger agreement), (2) continuously hold their applicable shares of our common stock through the effective time of the merger, (3) properly demand appraisal of their applicable shares, (4) meet certain statutory requirements described in this proxy statement and (5) do not withdraw their demands or otherwise lose their rights to appraisal will be entitled to seek appraisal of their shares in connection with the merger under Section 262 of the DGCL. This means that such stockholders will be entitled to seek appraisal of their shares by the Delaware Court of Chancery and to receive payment in cash of the “fair value” of their shares of our common stock, exclusive of any elements of value arising from the accomplishment or expectation of the merger, together with (unless the Delaware Court of Chancery in its discretion determines otherwise for good cause shown) interest on the amount determined by the Delaware Court of Chancery to be fair value from the effective date of the merger through the date of payment of the judgment at a rate of five percent over the Federal Reserve discount rate (including any surcharge) as established from time to time during the period between the effective date of the merger and the date of payment of the judgment, compounded quarterly (except that, if at any time before the entry of judgment in the proceeding, the surviving corporation makes a voluntary cash payment to each stockholder seeking appraisal, interest will accrue thereafter only upon the sum of (1) the difference, if any, between the amount so paid and the fair value of the shares as determined by the Delaware Court of Chancery; and (2) interest theretofore accrued, unless paid at that time). The surviving corporation is under no obligation to make such voluntary cash payment prior to such entry of judgment. Due to the complexity of the appraisal

process, stockholders who wish to seek appraisal of their shares are encouraged to seek the advice of legal counsel with respect to the exercise of appraisal rights.

Stockholders considering seeking appraisal should be aware that the fair value of their shares as determined pursuant to Section 262 of the DGCL could be more than, the same as or less than the value of the consideration that they would receive pursuant to the merger agreement if they did not seek appraisal of their shares.

Only a stockholder of record may submit a demand for appraisal. To exercise appraisal rights, the stockholder of record must (1) submit a written demand for appraisal to Twitter before the vote is taken on the proposal to adopt the merger agreement; (2) not vote, in person or by proxy, in favor of the proposal to adopt the merger agreement (whether by voting against the adoption of the merger agreement, abstaining or otherwise not voting with respect to the adoption of the merger agreement); (3) continue to hold the subject shares of our common stock of record through the effective time of the merger; and (4) strictly comply with all other procedures for exercising appraisal rights under the DGCL. The failure to follow exactly the procedures specified under the DGCL may result in the loss of appraisal rights. In addition, the Delaware Court of Chancery will dismiss appraisal proceedings in respect of Twitter unless certain conditions set forth in Section 262(g) of the DGCL are satisfied by the stockholders seeking appraisal. The requirements under Section 262 of the DGCL for exercising appraisal rights are described in further detail in this proxy statement, which description is qualified in its entirety by Section 262 of the DGCL, the relevant section of the DGCL regarding appraisal rights, a copy of which is attached as Annex B to this proxy statement. If you hold your shares of our common stock through a bank, broker or other nominee and you wish to exercise appraisal rights, you should consult with your bank, broker or other nominee to determine the appropriate procedures for the making of a demand for appraisal on your behalf by your bank, broker or other nominee.

Other Matters

At this time, we know of no other matters to be voted on at the special meeting. If any other matters properly come before the special meeting and you deliver a proxy to us, your shares of our common stock will be voted in accordance with the discretion of the appointed proxy holders, with full power of substitution and re-substitution.

Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to be Held on September 13, 2022

This proxy statement is available on our website located at https://investor.twitterinc.com.

Householding of Special Meeting Materials

We have adopted a procedure approved by the SEC called “householding.” Under this procedure, stockholders who have the same address and last name will receive only one copy of this proxy statement unless one or more of these stockholders notifies us that they wish to continue receiving individual copies. This procedure reduces printing costs, postage fees and the use of natural resources. Each stockholder who participates in householding will continue to be able to access or receive a separate proxy card upon request. If, at any time, you no longer wish to participate in householding and would prefer to receive a separate set of our disclosure documents, or if you are receiving multiple copies and wish to receive only one copy, please contact us as follows:

Twitter, Inc.

Attention: Investor Relations

1355 Market Street, Suite 900

San Francisco, California 94103

Tel: (415) 222-9670

Questions and Additional Information

If you have any questions concerning the merger, the special meeting or this proxy statement, would like additional copies of this proxy statement or need help submitting your proxy or voting your shares of our common stock, please contact our proxy solicitor at:

Innisfree M&A Incorporated

501 Madison Avenue, 20th Floor

New York, New York 10022

Stockholders call: (877) 750-8338 (toll-free from the U.S. and Canada) or

+1 (412) 232-3651 (from other countries)

Banks and brokers call collect: (212) 750-5833

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