Document:

EX-10.3

 Exhibit 10.3 
 TWITTER, INC. 
 2013 EMPLOYEE STOCK PURCHASE PLAN 

1. Purpose. The purpose of the Plan is to provide employees of the Company and its Designated Companies with an opportunity to
purchase Common Stock through accumulated Contributions. The Company’s intends for the Plan to have two components: a Code Section 423 Component (“423 Component”) and a non-Code Section 423 Component
(“Non-423 Component”). The Company’s intention is to have 423 Component of the Plan qualify as an “employee stock purchase plan” under Section 423 of the Code. The provisions of the 423 Component, accordingly,
will be construed so as to extend and limit Plan participation in a uniform and nondiscriminatory basis consistent with the requirements of Section 423 of the Code. In addition, this Plan authorizes the grant of an option to purchase shares of
Common Stock under the Non-423 Component that does not qualify as an “employee stock purchase plan” under Section 423 of the Code; such an option will be granted pursuant to rules, procedures or sub-plans adopted by the Administrator
designed to achieve tax, securities laws or other objectives for Eligible Employees and the Company. Except as otherwise provided herein, the Non-423 Component will operate and be administered in the same manner as the 423 Component. 

2. Definitions. 
 (a) “Administrator” means the Board or any Committee designated by the Board to administer the Plan pursuant to Section 14. 

(b) “Affiliate” means any entity, other than a Subsidiary, in which the Company has an equity or other ownership
interest. 
 (c) “Applicable Laws” means the requirements relating to the administration of equity-based awards
and the related issuance of shares of Common Stock under U.S. state corporate laws, U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable securities
and exchange control laws of any foreign country or jurisdiction where options are, or will be, granted under the Plan. 
 (d)
“Board” means the Board of Directors of the Company. 
 (e) “Change in Control” means the
occurrence of any of the following events: 
 (i) A change in the ownership of the Company which occurs on the date that any
one person, or more than one person acting as a group (“Person”), acquires ownership of the stock of the Company that, together with the stock held by such Person, constitutes more than fifty percent (50%) of the total voting
power of the stock of the Company; provided, however, that for purposes of this subsection, the acquisition of additional stock by any one Person, who is considered to own more than fifty percent (50%) of the total voting power of the stock of
the Company will not be considered a Change in Control; or 

  
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 (ii) A change in the effective control of the Company which occurs on the date that a
majority of members of the Board is replaced during any twelve (12) month period by Directors whose appointment or election is not endorsed by a majority of the members of the Board prior to the date of the appointment or election. For purposes
of this clause (ii), if any Person is considered to be in effective control of the Company, the acquisition of additional control of the Company by the same Person will not be considered a Change in Control; or 

(iii) A change in the ownership of a substantial portion of the Company’s assets which occurs on the date that any Person acquires
(or has acquired during the twelve (12) month period ending on the date of the most recent acquisition by such person or persons) assets from the Company that have a total gross fair market value equal to or more than fifty percent
(50%) of the total gross fair market value of all of the assets of the Company immediately prior to such acquisition or acquisitions; provided, however, that for purposes of this subsection, the following will not constitute a change in the
ownership of a substantial portion of the Company’s assets: (A) a transfer to an entity that is controlled by the Company’s stockholders immediately after the transfer, or (B) a transfer of assets by the Company to: (1) a
stockholder of the Company (immediately before the asset transfer) in exchange for or with respect to the Company’s stock, (2) an entity, fifty percent (50%) or more of the total value or voting power of which is owned, directly
or indirectly, by the Company, (3) a Person, that owns, directly or indirectly, fifty percent (50%) or more of the total value or voting power of all the outstanding stock of the Company, or (4) an entity, at least fifty percent
(50%) of the total value or voting power of which is owned, directly or indirectly, by a Person described in this subsection (iii)(B)(3). For purposes of this subsection, gross fair market value means the value of the assets of the Company, or
the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. 
 For
purposes of this definition, persons will be considered to be acting as a group if they are owners of a corporation that enters into a merger, consolidation, purchase or acquisition of stock, or similar business transaction with the Company.

 Notwithstanding the foregoing, a transaction will not be deemed a Change in Control unless the transaction qualifies as a
change in control event within the meaning of Code Section 409A, as it has been and may be amended from time to time, and any proposed or final U.S. Treasury Regulations and Internal Revenue Service guidance that has been promulgated or may be
promulgated thereunder from time to time. 
 Further and for the avoidance of doubt, a transaction will not constitute a Change
in Control if: (i) its sole purpose is to change the state of the Company’s incorporation, or (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the
Company’s securities immediately before such transaction. 

  
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 (f) “Code” means the U.S. Internal Revenue Code of 1986, as amended.
Reference to a specific section of the Code or U.S. Treasury Regulation thereunder will include such section or regulation, any valid regulation or other official applicable guidance promulgated under such section, and any comparable provision of
any future legislation or regulation amending, supplementing or superseding such section or regulation. 
 (g)
“Committee” means a committee of the Board appointed in accordance with Section 14 hereof. 
 (h)
“Common Stock” means the common stock of the Company. 
 (i) “Company” means Twitter, Inc., a
Delaware corporation, or any successor thereto. 
 (j) “Compensation” means an Eligible Employee’s base
straight time gross earnings, commissions (to the extent such commissions are an integral, recurring part of compensation), incentive compensation, bonuses, payments for overtime and shift premium, but exclusive of payments for equity compensation
income and other similar compensation. The Administrator, in its discretion, may, on a uniform and nondiscriminatory basis, establish a different definition of Compensation for a subsequent Offering Period. 

(k) “Contributions” means the payroll deductions and other additional payments that the Company may permit to be made by
a Participant to fund the exercise of options granted pursuant to the Plan. 
 (l) “Designated Company” means
any Subsidiary or Affiliate that has been designated by the Administrator from time to time in its sole discretion as eligible to participate in the Plan. For purposes of the 423 Component, only the Company and its Subsidiaries may be Designated
Companies, provided, however that at any given time, a Subsidiary that is a Designated Company under the 423 Component shall not be a Designated Company under the Non-423 Component. 

(m) “Director” means a member of the Board. 
 (n) “Eligible Employee” means any individual who is a common law employee providing services to the Company or a Designated Company and is customarily employed for at least twenty
(20) hours per week and more than five (5) months in any calendar year by the Employer, or any lesser number of hours per week and/or number of months in any calendar year established by the Administrator (if required under Applicable
Law) for purposes of any separate Offering or for Eligible Employee participating in the Non-423 Component. For purposes of the Plan, the employment relationship will be treated as continuing intact while the individual is on sick leave or
other leave of absence that the Employer approves or is legally protected under Applicable Laws. Where the period of leave exceeds three (3) months and the individual’s right to reemployment is not guaranteed either by statute or by
contract, the employment relationship will be deemed to have terminated three (3) months and one (1) day following the commencement of such leave. The Administrator, in its discretion, from time to

  
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time may, prior to an Enrollment Date for all options to be granted on such Enrollment Date in an Offering, determine (for each Offering under the 423 Component, on a uniform and
nondiscriminatory basis or as otherwise permitted by Treasury Regulation Section 1.423-2) that the definition of Eligible Employee will or will not include an individual if he or she: (i) has
not completed at least two (2) years of service since his or her last hire date (or such lesser period of time as may be determined by the Administrator in its discretion), (ii) customarily works not more than twenty (20) hours per
week (or such lesser period of time as may be determined by the Administrator in its discretion), (iii) customarily works not more than five (5) months per calendar year (or such lesser period of time as may be determined by the
Administrator in its discretion), (iv) is a highly compensated employee within the meaning of Section 414(q) of the Code, or (v) is a highly compensated employee within the meaning of Section 414(q) of the Code with
compensation above a certain level or is an officer or subject to the disclosure requirements of Section 16(a) of the Exchange Act, provided the exclusion is applied with respect to each Offering under the 423 Component in an identical
manner to all highly compensated individuals of the Employer whose employees are participating in that Offering. Each exclusion shall be applied with respect to an Offering under a 423 Component in a manner complying with U.S. Treasury Regulation Section 1.423-2(e)(2)(ii). Such exclusions may be applied with respect to an Offering under the Non-423 Component without regard to the limitations of Treasury Regulation
Section 1.423-2. 
 (o) “Employer” means the employer of the
applicable Eligible Employee(s). 
 (p) “Enrollment Date” means the first Trading Day of each Offering Period.

 (q) “Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended, including the rules and
regulations promulgated thereunder. 
 (r) “Exercise Date” means the first Trading Day on or after May 15
and November 15 of each Purchase Period. Notwithstanding the foregoing, the first Exercise Date under the Plan will be May 15, 2014. 
 (s) “Fair Market Value” means, as of any date and unless the Administrator determines otherwise, the value of Common Stock determined as follows: 

(i) If the Common Stock is listed on any established stock exchange or a national market system, including without limitation the New
York Stock Exchange, NASDAQ Global Select Market, the NASDAQ Global Market or the NASDAQ Capital Market of The NASDAQ Stock Market, its Fair Market Value will be the closing sales price for such stock as quoted on such exchange or system on the date
of determination (or the closing bid, if no sales were reported), as reported in The Wall Street Journal or such other source as the Administrator deems reliable; 
 (ii) If the Common Stock is regularly quoted by a recognized securities dealer but selling prices are not reported, its Fair Market Value will be the mean between the high bid and low asked prices for the
Common Stock on the date of determination (or if no bids and asks were reported on that date, as applicable, on the last Trading Day such bids and asks were reported), as reported in The Wall Street Journal or such other source as the
Administrator deems reliable; 

  
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 (iii) In the absence of an established market for the Common Stock, the Fair Market Value
thereof will be determined in good faith by the Administrator; or 
 (iv) For purposes of the Enrollment Date of the first
Offering Period under the Plan, the Fair Market Value will be the initial price to the public as set forth in the final prospectus included within the registration statement on Form S-1 filed with the Securities and Exchange Commission for the
initial public offering of the Common Stock (the “Registration Statement”). 
 Notwithstanding the foregoing, if the
determination date for the Fair Market Value occurs on a weekend or holiday, the Fair Market Value will be the price as determined in accordance with subsections (i) through (iii) above (as applicable) on the immediately preceding
business day, unless otherwise determined by the Administrator. 
 (t) “Fiscal Year” means the fiscal year of
the Company. 
 (u) “New Exercise Date” means a new Exercise Date if the Administrator shortens any Offering
Period then in progress. 
 (v) “Offering” means an offer under the Plan of an option that may be exercised
during an Offering Period as further described in Section 4. For purposes of the Plan, the Administrator may designate separate Offerings under the Plan (the terms of which need not be identical) in which Eligible Employees of one or more
Employers will participate, even if the dates of the applicable Offering Periods of each such Offering are identical and the provisions of the Plan will separately apply to each Offering. To the extent permitted by U.S. Treasury Regulation Section 1.423-2(a)(1), the terms of each Offering need not be identical provided that the terms of the Plan and an Offering together satisfy U.S. Treasury Regulation
Section 1.423-2(a)(2) and (a)(3). 
 (w) “Offering Periods”
means the periods of approximately twelve (12) months during which an option granted pursuant to the Plan may be exercised, (i) commencing on the first Trading Day on or after May 15 and November 15 of each year and terminating
on the first Trading Day on or after May 15 and November 15, approximately twelve (12) months later; provided, however, that the first Offering Period under the Plan will commence with the first Trading Day on or after the date on
which the U.S. Securities and Exchange Commission declares the Company’s Registration Statement effective and will end on the first Trading Day on or after November 15, 2014, and provided, further, that the second Offering Period under the
Plan will commence on the first Trading Day on or after November 15, 2014. The duration and timing of Offering Periods may be changed pursuant to Sections 4 and 20. 

(x) “Parent” means a “parent corporation,” whether now or hereafter existing, as defined in
Section 424(e) of the Code. 

  
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 (y) “Participant” means an Eligible Employee that participates in the Plan.

 (z) “Plan” means this Twitter, Inc. 2013 Employee Stock Purchase Plan. 

(aa) “Purchase Period” means the approximately six (6) month period commencing after one Exercise Date and ending
with the next Exercise Date, except that the first Purchase Period of any Offering Period will commence on the Enrollment Date and end with the next Exercise Date. Unless the Administrator provides otherwise, the Purchase Period will have the same
duration and coincide with the length of the Offering Period. 
 (bb) “Purchase Price” means an amount equal to
eighty-five percent (85%) of the Fair Market Value of a share of Common Stock on the Enrollment Date or on the Exercise Date, whichever is lower; provided however, that the Purchase Price may be determined for subsequent Offering Periods by the
Administrator subject to compliance with Section 423 of the Code (or any successor rule or provision or any other Applicable Law, regulation or stock exchange rule) or pursuant to Section 20. 

(cc) “Registration Date” means the effective date of the first registration statement that is filed by the Company and
declared effective pursuant to Section 12(g) of the Exchange Act, with respect to any class of the Company’s securities. 
 (dd) “Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as defined in Section 424(f) of the Code. 

(ee) “Trading Day” means a day on which the national stock exchange upon which the Common Stock is listed is open for
trading. 
 (ff) “U.S. Treasury Regulations” means the Treasury regulations of the Code. Reference to a
specific Treasury Regulation or Section of the Code shall include such Treasury Regulation or Section, any valid regulation promulgated under such Section, and any comparable provision of any future legislation or regulation amending, supplementing
or superseding such Section or regulation. 
 3. Eligibility. 

(a) First Offering Period. Any individual who is an Eligible Employee immediately prior to the first Offering Period will be
automatically enrolled in the first Offering Period. 
 (b) Subsequent Offering Periods. Any Eligible Employee on a given
Enrollment Date subsequent to the first Offering Period will be eligible to participate in the Plan, subject to the requirements of Section 5. 
 (c) Non-U.S. Employees. Eligible Employees who are citizens or residents of a non-U.S. jurisdiction (without regard to whether they also are citizens or residents of the United States or resident
aliens (within the meaning of Section 7701(b)(1)(A) of the Code)) may 

  
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be excluded from participation in the Plan or an Offering if the participation of such Eligible Employees is prohibited under the laws of the applicable jurisdiction or if complying with the laws
of the applicable jurisdiction would cause the Plan or an Offering to violate Section 423 of the Code. In the case of the Non-423 Component, an Eligible Employee may be excluded from participation in the Plan or an Offering if the Administrator
has determined that participation of such Eligible Employee is not advisable or practicable. 
 (d) Limitations. Any
provisions of the Plan to the contrary notwithstanding, no Eligible Employee will be granted an option under the Plan (i) to the extent that, immediately after the grant, such Eligible Employee (or any other person whose stock would be
attributed to such Eligible Employee pursuant to Section 424(d) of the Code) would own capital stock of the Company or any Parent or Subsidiary of the Company and/or hold outstanding options to purchase such stock possessing five
percent (5%) or more of the total combined voting power or value of all classes of the capital stock of the Company or of any Parent or Subsidiary of the Company, or (ii) to the extent that his or her rights to purchase stock under all
employee stock purchase plans (as defined in Section 423 of the Code) of the Company or any Parent or Subsidiary of the Company accrues at a rate, which exceeds twenty-five thousand dollars ($25,000) worth of stock (determined at the
Fair Market Value of the stock at the time such option is granted) for each calendar year in which such option is outstanding at any time, as determined in accordance with Section 423 of the Code and the regulations thereunder. 

4. Offering Periods. The Plan will be implemented by consecutive Offering Periods with a new Offering Period commencing on the
first Trading Day on or after May 15 and November 15 each year, or on such other date as the Administrator will determine; provided, however, that the first Offering Period under the Plan will commence with the first Trading Day on or
after the date upon which the Company’s Registration Statement is declared effective by the U.S. Securities and Exchange Commission and end on the first Trading Day on or after November 15, 2014, and provided, further, that the second
Offering Period under the Plan will commence on the first Trading Day on or after November 15, 2014. The Administrator will have the power to change the duration of Offering Periods (including the commencement dates thereof) with respect
to future Offerings without stockholder approval if such change is announced prior to the scheduled beginning of the first Offering Period to be affected thereafter; provided, however, that no Offering Period may last more than twenty-seven
(27) months. 
 5. Participation. 
 (a) First Offering Period. An Eligible Employee will be entitled to continue to participate in the first Offering Period pursuant to Section 3(a) only if such individual submits a
subscription agreement authorizing Contributions in a form determined by the Administrator (which may be similar to the form attached hereto as Exhibit A) to the Company’s designated plan administrator (i) no earlier than the
effective date of the Form S-8 registration statement with respect to the issuance of Common Stock under this Plan and (ii) no later than ten (10) business days following the effective date of such S-8 registration statement or such other
period of time as the Administrator may determine (the “Enrollment Window”). An Eligible Employee’s failure to submit the subscription agreement during the Enrollment Window will result in the automatic termination of such
individual’s participation in the first Offering Period. 

  
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 (b) Subsequent Offering Periods. An Eligible Employee may participate in the Plan
pursuant to Section 3(b) by (i) submitting to the Company’s stock administration office (or its designee), on or before a date determined by the Administrator prior to an applicable Enrollment Date, a properly completed
subscription agreement authorizing Contributions in the form provided by the Administrator for such purpose, or (ii) following an electronic or other enrollment procedure determined by the Administrator. 

6. Contributions. 
 (a) At the time a Participant enrolls in the Plan pursuant to Section 5, he or she will elect to have Contributions (in the form of payroll deductions or otherwise, to the extent permitted by the
Administrator) made on each pay day during the Offering Period in an amount not exceeding fifteen percent (15%) of the Compensation, which he or she receives on each pay day during the Offering Period (for illustrative purposes, should a
pay day occur on an Exercise Date, a Participant will have any payroll deductions made on such day applied to his or her account under the then-current Purchase Period or Offering Period). The Administrator, in its sole discretion, may permit all
Participants in a specified Offering to contribute amounts to the Plan through payment by cash, check or other means set forth in the subscription agreement prior to each Exercise Date of each Purchase Period. A Participant’s subscription
agreement will remain in effect for successive Offering Periods unless terminated as provided in Section 10 hereof. 
 (b)
In the event Contributions are made in the form of payroll deductions, such payroll deductions for a Participant will commence on the first pay day following the Enrollment Date and will end on the last pay day prior to the Exercise Date of such
Offering Period to which such authorization is applicable, unless sooner terminated by the Participant as provided in Section 10 hereof; provided, however, that for the first Offering Period, payroll deductions will commence on the first pay
day on or following the end of the Enrollment Window. 
 (c) All Contributions made for a Participant will be credited to his or
her account under the Plan and Contributions will be made in whole percentages only. A Participant may not make any additional payments into such account. 
 (d) A Participant may discontinue his or her participation in the Plan as provided in Section 10. Except as may be permitted by the Administrator, as determined in its sole discretion, a Participant
may not change the rate of his or her Contributions during an Offering Period. 
 (e) Notwithstanding the foregoing, to the
extent necessary to comply with Section 423(b)(8) of the Code and Section 3(b), a Participant’s Contributions may be decreased to zero percent (0%) at any time during a Purchase Period. Subject to
Section 423(b)(8) of the Code and Section 3(b) hereof, Contributions will recommence at the rate originally elected by the Participant effective as of the beginning of the first Purchase Period scheduled to end in the following
calendar year, unless terminated by the Participant as provided in Section 10. 

  
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 (f) Notwithstanding any provisions to the contrary in the Plan, the Administrator may allow
Eligible Employees to participate in the Plan via cash contributions instead of payroll deductions if (i) payroll deductions are not permitted under applicable local law, (ii) the Administrator determines that cash contributions are
permissible under Section 423 of the Code or (iii) for Participants participating in the Non-423 Component. 
 (g) At
the time the option is exercised, in whole or in part, or at the time some or all of the Common Stock issued under the Plan is disposed of (or any other time that a taxable event related to the Plan occurs), the Participant must make adequate
provision for the Company’s or Employer’s federal, state, local or any other tax liability payable to any authority including taxes imposed by jurisdictions outside of the U.S., national insurance, social security or other tax withholding
obligations, if any, which arise upon the exercise of the option or the disposition of the Common Stock (or any other time that a taxable event related to the Plan occurs). At any time, the Company or the Employer may, but will not be obligated to,
withhold from the Participant’s compensation the amount necessary for the Company or the Employer to meet applicable withholding obligations, including any withholding required to make available to the Company or the Employer any tax deductions
or benefits attributable to sale or early disposition of Common Stock by the Eligible Employee. In addition, the Company or the Employer may, but will not be obligated to, withhold from the proceeds of the sale of Common Stock or any other method of
withholding the Company or the Employer deems appropriate to the extent permitted by U.S. Treasury Regulation Section 1.423-2(f). 
 7. Grant of Option. On the Enrollment Date of each Offering Period, each Eligible Employee participating in such Offering Period will be granted an option to purchase on each Exercise Date during
such Offering Period (at the applicable Purchase Price) up to a number of shares of Common Stock determined by dividing such Eligible Employee’s Contributions accumulated prior to such Exercise Date and retained in the Eligible
Employee’s account as of the Exercise Date by the applicable Purchase Price; provided that in no event will an Eligible Employee be permitted to purchase during each Purchase Period more than 3,000 shares of Common Stock (subject to any
adjustment pursuant to Section 19) and provided further that such purchase will be subject to the limitations set forth in Sections 3(c) and 13. The Eligible Employee may accept the grant of such option (i) with respect to the
first Offering Period by submitting a properly completed subscription agreement in accordance with the requirements of Section 5 on or before the last day of the Enrollment Window, and (ii) with respect to any subsequent Offering Period
under the Plan, by electing to participate in the Plan in accordance with the requirements of Section 5. The Administrator may, for future Offering Periods, increase or decrease, in its absolute discretion, the maximum number of shares of
Common Stock that an Eligible Employee may purchase during each Purchase Period of an Offering Period. Exercise of the option will occur as provided in Section 8, unless the Participant has withdrawn pursuant to Section 10. The option will
expire on the last day of the Offering Period. 

  
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 8. Exercise of Option. 

(a) Unless a Participant withdraws from the Plan as provided in Section 10, his or her option for the purchase of shares of Common
Stock will be exercised automatically on the Exercise Date, and the maximum number of full shares subject to the option will be purchased for such Participant at the applicable Purchase Price with the accumulated Contributions from his or her
account. No fractional shares of Common Stock will be purchased; any Contributions accumulated in a Participant’s account, which are not sufficient to purchase a full share will be retained in the Participant’s account for the subsequent
Purchase Period or Offering Period, subject to earlier withdrawal by the Participant as provided in Section 10. Any other funds left over in a Participant’s account after the Exercise Date will be returned to the Participant. During a
Participant’s lifetime, a Participant’s option to purchase shares hereunder is exercisable only by him or her. 
 (b)
If the Administrator determines that, on a given Exercise Date, the number of shares of Common Stock with respect to which options are to be exercised may exceed (i) the number of shares of Common Stock that were available for sale under the
Plan on the Enrollment Date of the applicable Offering Period, or (ii) the number of shares of Common Stock available for sale under the Plan on such Exercise Date, the Administrator may in its sole discretion (x) provide that the Company
will make a pro rata allocation of the shares of Common Stock available for purchase on such Enrollment Date or Exercise Date, as applicable, in as uniform a manner as will be practicable and as it will determine in its sole discretion to be
equitable among all Participants exercising options to purchase Common Stock on such Exercise Date, and continue all Offering Periods then in effect or (y) provide that the Company will make a pro rata allocation of the shares available for
purchase on such Enrollment Date or Exercise Date, as applicable, in as uniform a manner as will be practicable and as it will determine in its sole discretion to be equitable among all participants exercising options to purchase Common Stock on
such Exercise Date, and terminate any or all Offering Periods then in effect pursuant to Section 20. The Company may make a pro rata allocation of the shares available on the Enrollment Date of any applicable Offering Period pursuant to the
preceding sentence, notwithstanding any authorization of additional shares for issuance under the Plan by the Company’s stockholders subsequent to such Enrollment Date. 
 (c) Further, with respect to any Offering under the Non-423 Component that is made to Participants of Designated Companies within the European Economic Area (the “EEA”), if a prospectus may be
required to be filed in accordance with EU Prospectus Directive No. 2003/71/EC, as currently and hereinafter amended (the “EU Prospectus Directive”), then until such time as a valid prospectus is on file or a prospectus is not
required or is no longer required under the EU Prospectus Directive in connection with such Offerings under the Plan, the total Purchase Price payable for the aggregate number of shares of Common Stock offered under this Plan under all
Offerings that are not otherwise exempt from the EU Prospectus Directive made to Participants of Designated Companies within the EEA for any twelve (12)-month period shall not exceed EUR 5 million (the “EEA Limit”). If the
Administrator determines that, on a given Enrollment Date, the total Purchase Price payable for the number of shares of Common Stock with respect to which options are to be exercised may 

  
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cause the EEA Limit to be exceeded, the Administrator may in its sole discretion (x) provide that the Company will make a pro rata allocation of the shares of Common Stock available for
purchase and under the EEA Limit on such Enrollment Date, as applicable, in as uniform a manner as will be practicable and as it will determine in its sole discretion to be equitable among all Participants of Designated Companies within the EEA
exercising options to purchase Common Stock by reference to the Offering Period beginning on that Enrollment Date, and continue all Offering Periods then in effect or (y) provide that the Company will make a pro rata allocation of the shares of
Common Stock available for purchase and under the EEA Limit on such Enrollment Date, as applicable, in as uniform a manner as will be practicable and as it will determine in its sole discretion to be equitable among all Participants of Designated
Companies within the EEA exercising options to purchase Common Stock by reference to the Offering Period beginning on that Enrollment Date, and terminate any or all Offering Periods then in effect pursuant to Section 20.

9. Delivery. As soon as reasonably practicable after each Exercise Date on which a purchase of shares of Common Stock occurs, the
Company will arrange the delivery to each Participant of the shares purchased upon exercise of his or her option in a form determined by the Administrator (in its sole discretion) and pursuant to rules established by the Administrator. The
Company may permit or require that shares be deposited directly with a broker designated by the Company or to a designated agent of the Company, and the Company may utilize electronic or automated methods of share transfer. The Company may require
that shares be retained with such broker or agent for a designated period of time and/or may establish other procedures to permit tracking of disqualifying dispositions of such shares. No Participant will have any voting, dividend, or other
stockholder rights with respect to shares of Common Stock subject to any option granted under the Plan until such shares have been purchased and delivered to the Participant as provided in this Section 9. 

10. Withdrawal. 
 (a) A Participant may withdraw all but not less than all the Contributions credited to his or her account and not yet used to exercise his or her option under the Plan at any time by (i) submitting
to the Company’s stock administration office (or its designee) a written notice of withdrawal in the form determined by the Administrator for such purpose (which may be similar to the form attached hereto as Exhibit B), or
(ii) following an electronic or other withdrawal procedure determined by the Administrator. All of the Participant’s Contributions credited to his or her account will be paid to such Participant promptly after receipt of notice of
withdrawal and such Participant’s option for the Offering Period will be automatically terminated, and no further Contributions for the purchase of shares will be made for such Offering Period. If a Participant withdraws from an Offering
Period, Contributions will not resume at the beginning of the succeeding Offering Period, unless the Participant re-enrolls in the Plan in accordance with the provisions of Section 5. 

(b) A Participant’s withdrawal from an Offering Period will not have any effect upon his or her eligibility to participate in any
similar plan that may hereafter be adopted by the Company or in succeeding Offering Periods that commence after the termination of the Offering Period from which the Participant withdraws. 

  
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 11. Termination of Employment. Upon a Participant’s ceasing to be an Eligible
Employee, for any reason, he or she will be deemed to have elected to withdraw from the Plan and the Contributions credited to such Participant’s account during the Offering Period but not yet used to purchase shares of Common Stock under the
Plan will be returned to such Participant or, in the case of his or her death, to the person or persons entitled thereto under Section 15, and such Participant’s option will be automatically terminated. Unless determined otherwise by the
Administrator in a manner that, with respect to an Offering under the 423 Component, is permitted by, and compliant with, Section 423 of the Code, a Participant whose employment transfers between entities through a termination with an immediate
rehire (with no break in service) by the Company or a Designated Company shall not be treated as terminated under the Plan; however, no Participant shall be deemed to switch from an Offering under the Non-423 Component to an Offering under the
423 Component or vice versa unless (and then only to the extent) such switch would not cause the 423 Component or any Option thereunder to fail to comply with Section 423 of the Code. 

12. Interest. No interest will accrue on the Contributions of a participant in the Plan, except as may be required by Applicable
Law, as determined by the Company, and if so required by the laws of a particular jurisdiction, shall, with respect to Offerings under the 423 Component, apply to all Participants in the relevant Offering, except to the extent otherwise permitted by
U.S. Treasury Regulation Section 1.423-2(f). 
 13. Stock. 

(a) Subject to adjustment upon changes in capitalization of the Company as provided in Section 19 hereof, the maximum number of
shares of Common Stock that will be made available for sale under the Plan will be 12,000,000 shares of Common Stock. The number of Shares available for issuance under the Plan will be increased on the first day of each Fiscal Year beginning with
the 2014 Fiscal Year equal to the least of (i) 11,300,000 shares of Common Stock, (ii) one percent (1%) of the outstanding shares of Common Stock on the last day of the immediately preceding Fiscal Year, or (iii) an amount
determined by the Administrator. 
 (b) Until the Shares are issued (as evidenced by the appropriate entry on the books of the
Company or of a duly authorized transfer agent of the Company), a Participant will only have the rights of an unsecured creditor with respect to such shares, and no right to vote or receive dividends or any other rights as a stockholder will exist
with respect to such shares. 
 (c) Shares of Common Stock to be delivered to a Participant under the Plan will be registered in
the name of the Participant or in the name of the Participant and his or her spouse. 
 14. Administration. The Plan will
be administered by the Board or a Committee appointed by the Board, which Committee will be constituted to comply with Applicable Laws. The Administrator will have full and exclusive discretionary authority to construe, interpret and

  
 12 

 
apply the terms of the Plan, to designate separate Offerings under the Plan, to designate Subsidiaries and Affiliates as participating in the 423 Component or Non-423 Component, to determine
eligibility, to adjudicate all disputed claims filed under the Plan and to establish such procedures that it deems necessary for the administration of the Plan (including, without limitation, to adopt such procedures and sub-plans as are necessary
or appropriate to permit the participation in the Plan by employees who are foreign nationals or employed outside the U.S., the terms of which sub-plans may take precedence over other provisions of this Plan, with the exception of
Section 13(a) hereof, but unless otherwise superseded by the terms of such sub-plan, the provisions of this Plan shall govern the operation of such sub-plan). Unless otherwise determined by the Administrator, the employees eligible to
participate in each sub-plan will participate in a separate Offering and will be in the Non-423 Component, unless such designation would cause the 423 Component to violate the requirements of Section 423 of the Code. Without limiting the
generality of the foregoing, the Administrator is specifically authorized to adopt rules and procedures regarding eligibility to participate, the definition of Compensation, handling of Contributions, making of Contributions to the Plan (including,
without limitation, in forms other than payroll deductions), establishment of bank or trust accounts to hold Contributions, payment of interest, conversion of local currency, obligations to pay payroll tax, determination of beneficiary designation
requirements, withholding procedures and handling of stock certificates that vary with applicable local requirements. The Administrator also is authorized to determine that, to the extent permitted by U.S. Treasury Regulation Section 1.423-2(f), the terms of an option granted under the Plan or an Offering to citizens or residents of a non-U.S. jurisdiction will be less favorable than the terms of options granted under the Plan or
the same Offering to employees resident solely in the U.S. Every finding, decision and determination made by the Administrator will, to the full extent permitted by law, be final and binding upon all parties. 

15. Designation of Beneficiary. 
 (a) If permitted by the Administrator, a Participant may file a designation of a beneficiary who is to receive any shares of Common Stock and cash, if any, from the Participant’s account under the
Plan in the event of such Participant’s death subsequent to an Exercise Date on which the option is exercised but prior to delivery to such Participant of such shares and cash. In addition, if permitted by the Administrator, a Participant may
file a designation of a beneficiary who is to receive any cash from the Participant’s account under the Plan in the event of such Participant’s death prior to exercise of the option. If a Participant is married and the designated
beneficiary is not the spouse, spousal consent will be required for such designation to be effective. 
 (b) Such designation of
beneficiary may be changed by the Participant at any time by notice in a form determined by the Administrator. In the event of the death of a Participant and in the absence of a beneficiary validly designated under the Plan who is living at the time
of such Participant’s death, the Company will deliver such shares and/or cash to the executor or administrator of the estate of the Participant, or if no such executor or administrator has been appointed (to the knowledge of the Company), the
Company, in its discretion, may deliver such shares and/or cash to the spouse or to any one or more dependents or relatives of the Participant, or if no spouse, dependent or relative is known to the Company, then to such other person as the Company
may designate. 

  
 13 

 (c) All beneficiary designations will be in such form and manner as the Administrator may
designate from time to time. Notwithstanding Sections 15(a) and (b) above, the Company and/or the Administrator may decide not to permit such designations by Participants in non-U.S. jurisdictions to the extent permitted by U.S. Treasury
Regulation Section 1.423-2(f). 
 16. Transferability. Neither Contributions
credited to a Participant’s account nor any rights with regard to the exercise of an option or to receive shares of Common Stock under the Plan may be assigned, transferred, pledged or otherwise disposed of in any way (other than by will, the
laws of descent and distribution or as provided in Section 15 hereof) by the Participant. Any such attempt at assignment, transfer, pledge or other disposition will be without effect, except that the Company may treat such act as an
election to withdraw funds from an Offering Period in accordance with Section 10 hereof. 
 17. Use of Funds. The
Company may use all Contributions received or held by it under the Plan for any corporate purpose, and the Company will not be obligated to segregate such Contributions except under Offerings or for Participants in the Non-423 Component for which
Applicable Laws require that Contributions to the Plan by Participants be segregated from the Company’s general corporate funds and/or deposited with an independent third party. Until shares of Common Stock are issued, Participants will only
have the rights of an unsecured creditor with respect to such shares. 
 18. Reports. Individual accounts will be
maintained for each Participant in the Plan. Statements of account will be given to participating Eligible Employees at least annually, which statements will set forth the amounts of Contributions, the Purchase Price, the number of shares of Common
Stock purchased and the remaining cash balance, if any. 
 19. Adjustments, Dissolution, Liquidation, Merger or Change in
Control. 
 (a) Adjustments. In the event that any dividend or other distribution (whether in the form of cash,
Common Stock, other securities, or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase, or exchange of Common Stock or other securities of the
Company, or other change in the corporate structure of the Company affecting the Common Stock occurs, the Administrator, in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan,
will, in such manner as it may deem equitable, adjust the number and class of Common Stock that may be delivered under the Plan, the Purchase Price per share and the number of shares of Common Stock covered by each option under the Plan that has not
yet been exercised, and the numerical limits of Sections 7 and 13. 
 (b) Dissolution or Liquidation. In the event of the
proposed dissolution or liquidation of the Company, any Offering Period then in progress will be shortened by setting a New Exercise Date, and will terminate immediately prior to the consummation of such proposed

  
 14 

 
dissolution or liquidation, unless provided otherwise by the Administrator. The New Exercise Date will be before the date of the Company’s proposed dissolution or liquidation. The
Administrator will notify each Participant in writing or electronically, prior to the New Exercise Date, that the Exercise Date for the Participant’s option has been changed to the New Exercise Date and that the Participant’s option will
be exercised automatically on the New Exercise Date, unless prior to such date the Participant has withdrawn from the Offering Period as provided in Section 10 hereof. 
 (c) Merger or Change in Control. In the event of a merger or Change in Control, each outstanding option will be assumed or an equivalent option substituted by the successor corporation or a Parent
or Subsidiary of the successor corporation. In the event that the successor corporation refuses to assume or substitute for the option, the Offering Period with respect to which such option relates will be shortened by setting a New Exercise Date on
which such Offering Period shall end. The New Exercise Date will occur before the date of the Company’s proposed merger or Change in Control. The Administrator will notify each Participant in writing or electronically prior to the New Exercise
Date, that the Exercise Date for the Participant’s option has been changed to the New Exercise Date and that the Participant’s option will be exercised automatically on the New Exercise Date, unless prior to such date the Participant has
withdrawn from the Offering Period as provided in Section 10 hereof. 
 20. Amendment or Termination. 

(a) The Administrator, in its sole discretion, may amend, suspend, or terminate the Plan, or any part thereof, at any time and for any
reason. If the Plan is terminated, the Administrator, in its discretion, may elect to terminate all outstanding Offering Periods either immediately or upon completion of the purchase of shares of Common Stock on the next Exercise Date (which may be
sooner than originally scheduled, if determined by the Administrator in its discretion), or may elect to permit Offering Periods to expire in accordance with their terms (and subject to any adjustment pursuant to Section 19). If the Offering
Periods are terminated prior to expiration, all amounts then credited to Participants’ accounts that have not been used to purchase shares of Common Stock will be returned to the Participants (without interest thereon, except as
otherwise required under Applicable Laws, as further set forth in Section 12 hereof) as soon as administratively practicable. 
 (b) Without stockholder consent and without limiting Section 20(a), the Administrator will be entitled to change the Offering Periods or Purchase Periods, designate separate Offerings, limit the
frequency and/or number of changes in the amount withheld during an Offering Period, establish the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars, permit Contributions in excess of the amount designated by a
Participant in order to adjust for delays or mistakes in the Company’s processing of properly completed Contribution elections, establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that
amounts applied toward the purchase of Common Stock for each Participant properly correspond with Contribution amounts, and establish such other limitations or procedures as the Administrator determines in its sole discretion advisable that are
consistent with the Plan. 

  
 15 

 (c) In the event the Administrator determines that the ongoing operation of the Plan may
result in unfavorable financial accounting consequences, the Administrator may, in its discretion and, to the extent necessary or desirable, modify, amend or terminate the Plan to reduce or eliminate such accounting consequence including, but not
limited to: 
 (i) amending the Plan to conform with the safe harbor definition under the Financial Accounting Standards Board
Accounting Standards Codification Topic 718 (or any successor thereto), including with respect to an Offering Period underway at the time; 
 (ii) altering the Purchase Price for any Offering Period or Purchase Period including an Offering Period or Purchase Period underway at the time of the change in Purchase Price; 

(iii) shortening any Offering Period or Purchase Period by setting a New Exercise Date, including an Offering Period or Purchase Period
underway at the time of the Administrator action; 
 (iv) reducing the maximum percentage of Compensation a Participant may
elect to set aside as Contributions; and 
 (v) reducing the maximum number of Shares a Participant may purchase during any
Offering Period or Purchase Period. 
 Such modifications or amendments will not require stockholder approval or the consent of any Plan
Participants. 
 21. Notices. All notices or other communications by a Participant to the Company under or in connection
with the Plan will be deemed to have been duly given when received in the form and manner specified by the Company at the location, or by the person, designated by the Company for the receipt thereof. 

22. Conditions Upon Issuance of Shares. Shares of Common Stock will not be issued with respect to an option unless the exercise of
such option and the issuance and delivery of such shares pursuant thereto will comply with all applicable provisions of law, domestic or foreign, including, without limitation, the Securities Act of 1933, as amended, the Exchange Act, the rules and
regulations promulgated thereunder, and the requirements of any stock exchange upon which the shares may then be listed, and will be further subject to the approval of counsel for the Company with respect to such compliance. 

As a condition to the exercise of an option, the Company may require the person exercising such option to represent and warrant at the
time of any such exercise that the shares are being purchased only for investment and without any present intention to sell or distribute such shares if, in the opinion of counsel for the Company, such a representation is required by any of the
aforementioned applicable provisions of law. 

  
 16 

 23. Code Section 409A. The 423 Component of the Plan is exempt from the
application of Code Section 409A and any ambiguities herein will be interpreted to so be exempt from Code Section 409A. In furtherance of the foregoing and notwithstanding any provision in the Plan to the contrary, if the Administrator
determines that an option granted under the Plan may be subject to Code Section 409A or that any provision in the Plan would cause an option under the Plan to be subject to Code Section 409A, the Administrator may amend the terms of the
Plan and/or of an outstanding option granted under the Plan, or take such other action the Administrator determines is necessary or appropriate, in each case, without the Participant’s consent, to exempt any outstanding option or future option
that may be granted under the Plan from or to allow any such options to comply with Code Section 409A, but only to the extent any such amendments or action by the Administrator would not violate Code Section 409A. Notwithstanding the
foregoing, the Company shall have no liability to a Participant or any other party if the option to purchase Common Stock under the Plan that is intended to be exempt from or compliant with Code Section 409A is not so exempt or compliant or for
any action taken by the Administrator with respect thereto. The Company makes no representation that the option to purchase Common Stock under the Plan is compliant with Code Section 409A. 

24. Term of Plan. The Plan will become effective upon the earlier to occur of its adoption by the Board or its approval by the
stockholders of the Company. It will continue in effect for a term of twenty (20) years, unless sooner terminated under Section 20. 
 25. Stockholder Approval. The Plan will be subject to approval by the stockholders of the Company within twelve (12) months after the date the Plan is adopted by the Board. Such stockholder
approval will be obtained in the manner and to the degree required under Applicable Laws. 
 26. Automatic Transfer to Low
Price Offering Period. Unless the Administrator, in its sole discretion, chooses otherwise prior to an Enrollment Date, and to the extent permitted by Applicable Laws, if the Fair Market Value of the Common Stock on any Exercise Date in an
Offering Period is lower than the Fair Market Value of the Common Stock on the Enrollment Date of such Offering Period, then all participants in such Offering Period automatically will be withdrawn from such Offering Period immediately after the
exercise of their option on such Exercise Date and automatically re-enrolled in the immediately following Offering Period as of the first day thereof and the preceding Offering Period will terminate. 

27. Governing Law. The Plan shall be governed by, and construed in accordance with, the laws of the State of California (except
its choice-of-law provisions). 
 28. No Right to Employment. Participation in the Plan by a Participant shall not be
construed as giving a Participant the right to be retained as an employee of the Company or a Subsidiary or Affiliate, as applicable. Furthermore, the Company or a Subsidiary or Affiliate may dismiss a Participant from employment at any time, free
from any liability or any claim under the Plan. 
 29. Severability. If any provision of the Plan is or becomes or is
deemed to be invalid, illegal, or unenforceable for any reason in any jurisdiction or as to any Participant, such 

  
 17 

 
invalidity, illegality or unenforceability shall not affect the remaining parts of the Plan, and the Plan shall be construed and enforced as to such jurisdiction or Participant as if the invalid,
illegal or unenforceable provision had not been included. 
 30. Compliance with Applicable Laws. The terms of this Plan
are intended to comply with all Applicable Laws and will be construed accordingly. 

  
 18 

 EXHIBIT A 

TWITTER, INC. 
 2013 EMPLOYEE STOCK PURCHASE PLAN 
 SUBSCRIPTION AGREEMENT

  

			
	          Original Application
	  	Offering Date:                    
		
	          Change in Payroll Deduction Rate
	  	

 Capitalized terms used but not otherwise defined herein shall have the meaning given to 

such terms in the Twitter, Inc. 2013 Employee Stock Purchase Plan. 

1.
I,                                , hereby elect to participate in the Twitter, Inc. (the
“Company”) 2013 Employee Stock Purchase Plan (the “Plan”) and subscribe to purchase shares of the Company’s Common Stock in accordance with this 2013 Employee Stock Purchase Plan Subscription Agreement (the
“Subscription Agreement”) and the Plan. 
 2. I hereby authorize payroll deductions from each paycheck in the amount
of     % of my Compensation on each payday (from 0 to 15%) during the Offering Period in accordance with the Plan. (Please note that no fractional percentages are permitted.) 

3. I understand that said payroll deductions will be accumulated for the purchase of shares of Common Stock at the applicable Purchase
Price determined in accordance with the Plan. I understand that if I do not withdraw from an Offering Period, any accumulated payroll deductions will be used to automatically exercise my option and purchase Common Stock under the Plan. 

4. I have received a copy of the complete Plan and its accompanying prospectus. I understand that my participation in the Plan is in all
respects subject to the terms of the Plan. The Company reserves the right to modify the Plan and to impose other requirements on my participation in the Plan, on the option and on any shares of Common Stock purchased under the Plan, to the extent
the Company determines it is necessary or advisable for legal or administrative reasons. I agree to be bound by such modifications regardless of whether notice is given to me of such event, subject, in any case, to my right to withdrawal from
participation in the Plan. I further agree to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing. 

  
 19 

 5. I understand the following paragraph applies to me if I am a U.S. taxpayer or subject
to U.S. taxation: If I dispose of any shares received by me pursuant to an offering of the Plan in the United States within two (2) years after the Offering Date (the first day of the Offering Period during which I purchased such shares) or
one (1) year after the Exercise Date, I will be treated for U.S. federal income tax purposes as having received ordinary income at the time of such disposition in an amount equal to the excess of the Fair Market Value of the shares at the time
such shares were purchased by me over the Purchase Price. I hereby agree to notify the Company in writing within thirty (30) days after the date of any disposition of my shares and I will make adequate provision for U.S. federal, state or
other tax withholding obligations, if any, which arise upon the disposition of the Common Stock. The Company may, but will not be obligated to, withhold from my compensation the amount necessary to meet any applicable withholding obligation
including any withholding necessary to make available to the Company any tax deductions or benefits attributable to sale or early disposition of Common Stock by me. If I dispose of such shares at any time after the expiration of the
two (2)-year and one (1)-year holding periods, I understand that I will be treated for U.S. federal income tax purposes as having received income only at the time of such disposition, and that such income will be taxed as ordinary income
only to the extent of an amount equal to the lesser of (a) the excess of the Fair Market Value of the shares at the time of such disposition over the Purchase Price, or (b) 15% of the Fair Market Value of the shares on the first day of the
Offering Period. The remainder of the gain, if any, recognized on such disposition will be taxed as capital gain. 
 6. The
Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. I hereby consent to receive such documents by electronic delivery and agree to participate in the Plan
through an on-line or electronic system established and maintained by the Company or another third party designated by the Company. 
 7. The Subscription Agreement shall be governed by and construed in accordance with the laws of the State of California (without regard to its conflict of laws provisions) as such laws are applied to
agreements between California residents entered into and to be performed entirely within California. For purposes of litigating any dispute that arises directly or indirectly from the relationship of the parties, I hereby submit and consent to the
exclusive jurisdiction of the State of California and agree that such litigation shall be conducted only in the courts of San Francisco County, California, or the federal courts for the U.S. for the Northern District of California, and no other
courts. 
 8. Notwithstanding any provision of this Subscription Agreement, I understand that if I am working or resident in a
country other than the United States, my participation in the Plan shall also be subject to the Additional Terms and Conditions for Non-U.S. Employees set forth in Appendix A attached hereto and any special terms and conditions for my country
set forth in Appendix B attached hereto. Further, I understand that if I relocate to one of the countries included in Appendix B, the special terms and conditions for such country will apply to me to the extent the Company determines in its
sole discretion that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. Appendix A and Appendix B constitute part of this Subscription Agreement. 

  
 20 

 9. I hereby agree to be bound by the terms of the Plan and this Subscription Agreement. The
effectiveness of this Subscription Agreement is dependent upon my eligibility to participate in the Plan. 
  

					
		 	Employee’s Tax ID Number:	 	  

			
		 	Employee’s Address:	 	  

			
		 		 	  

			
		 		 	  

 I ACKNOWLEDGE AND UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT INCLUDING ITS APPENDICES AND MY
PARTICIPATION IN THE PLAN WILL REMAIN IN EFFECT THROUGHOUT SUCCESSIVE OFFERING PERIODS UNLESS AFFIRMATIVELY TERMINATED BY ME. 
  

							
	Dated:	 	  
	 		 	  

				
		 		 		 	Signature of Employee

  
 21 

 APPENDIX A 
 TWITTER, INC. 
 2013 EMPLOYEE STOCK PURCHASE PLAN 

ADDITIONAL TERMS AND CONDITIONS FOR NON-U.S. EMPLOYEES 
 Capitalized terms used but not otherwise defined herein shall have the meaning given to 
 such terms in the Twitter, Inc. 2013 Employee Stock Purchase Plan 
 1.
Terms of Plan Participation for Non-U.S. Employees. I understand and agree that this Appendix A contains additional terms and conditions that, together with the Plan and the Subscription Agreement, govern my participation in the Plan if I am
working or resident in a country other than the United States. I further understand and agree that my participation in the Plan will also be subject to any terms and conditions for my country set forth in Appendix B attached hereto. 

 2. Conversion of Payroll Deductions. I understand that, if my payroll deductions or Contributions under the Plan
are made in any currency other than U.S. dollars, such payroll deductions or Contributions will be converted to U.S. dollars on or prior to the Exercise Date using a prevailing exchange rate in effect at the time such conversion is performed, as
determined by the Administrator. I understand and agree that neither the Company, the Employer nor any Parent, Subsidiary or Affiliate shall be liable for any foreign exchange rate fluctuation between my local currency and the U.S. Dollar that
may affect the value of the options granted to me under the Plan, or of any amounts due to me under the Plan or as a result of the subsequent sale of any shares of Common Stock acquired under the Plan.  

3. Tax Obligations. I acknowledge and agree that, regardless of any action taken by the Company or the Employer with respect to
any or all income tax, social security, social insurances, National Insurance Contributions, payroll tax, fringe benefit, or other tax-related items related to my participation in the Plan and legally applicable to me including, without limitation,
in connection with the grant of such options, the purchase or sale of shares of Common Stock acquired under the Plan and/or the receipt of any dividends on such shares (“Tax-Related Items”), the ultimate liability for all Tax-Related Items
is and remains my responsibility and may exceed the amount actually withheld by the Company or the Employer. Furthermore, I acknowledge that the Company and/or the Employer (1) make no representations or undertakings regarding the treatment of
any Tax-Related Items in connection with any aspect of the options under the Plan and (2) do not commit to and are under no obligation to structure the terms of the grant of options or any aspect of my participation in the Plan to reduce or
eliminate my liability for Tax-Related Items or achieve any particular tax result. Further, if I have become subject to tax in more than one jurisdiction between the Enrollment Date and the 

  
 1 

 
date of any relevant taxable or tax withholding event, as applicable, I acknowledge that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account
for Tax-Related Items in more than one jurisdiction. 
 Prior to the purchase of shares of Common Stock under the Plan or any
other relevant taxable or tax withholding event, as applicable, I agree to make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, I authorize the Company and/or the Employer, or
their respective agents, at their discretion, to satisfy the obligations with regard to all Tax-Related Items by one or a combination of the following: (1) withholding from my wages or Compensation paid to me by the Company and/or the Employer;
or (2) withholding from proceeds of the sale of the shares of Common Stock purchased under the Plan either through a voluntary sale or through a mandatory sale arranged by the Company (on my behalf pursuant to this authorization). Depending on
the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable maximum applicable withholding rates, in which case I will receive a refund of any over-withheld amount in cash and will have no entitlement
to the Common Stock equivalent. 
 Finally, I agree to pay to the Company or the Employer any amount of Tax-Related Items that
the Company or the Employer may be required to withhold as a result of my participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to purchase shares of Common Stock under the Plan on my behalf
and/or refuse to issue or deliver the shares or the proceeds of the sale of shares if I fail to comply with my obligations in connection with the Tax-Related Items. 
 4. Service Acknowledgments. By electing to participate in the Plan, I acknowledge, understand and agree that: 
 (a) the Plan is established voluntarily by the Company, it is discretionary in nature and it may be modified, amended, suspended or terminated by the Company at any time, to the extent provided for in the
Plan; 
 (b) all decisions with respect to future grants of options under the Plan, if applicable, will be at the sole
discretion of the Company; 
 (c) the grant of options under the Plan shall not create a right to employment or be interpreted
as forming an employment or service contract with the Company, the Employer, or any Parent, Subsidiary or Affiliate of the Company, and shall not interfere with the ability of the Company or the Employer, as applicable, to terminate my employment
(if any); 
 (d) I am voluntarily participating in the Plan; 

(e) the options granted under the Plan and the shares of Common Stock underlying such options, and the income and value of same, are not
intended to replace any pension rights or compensation; 

  
 2 

 (f) the options granted under the Plan and the shares of Common Stock underlying such
options, and the income and value of same, are not part of my normal or expected compensation for any purpose, including, but not limited to, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments,
bonuses, long-service awards, pension or retirement benefits or similar payments; 
 (g) the future value of the shares of
Common Stock underlying the options granted under the Plan is unknown, indeterminable and cannot be predicted with certainty; 

(h) the shares of Common Stock that I acquire under the Plan may increase or decrease in value, even below the Purchase Price;

 (i) no claim or entitlement to compensation or damages shall arise from the forfeiture options granted to me under the Plan
as a result of the termination of my status as an Eligible Employee (for any reason whatsoever, and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where I am employed or the terms of my employment
agreement, if any) and, in consideration of the grant of options under the Plan to which I am otherwise not entitled, I irrevocably agree never to institute a claim against the Company, the Employer, or any Parent, Subsidiary or Affiliate, waive my
ability, if any, to bring such claim, and release the Company, the Employer, and any Parent, Subsidiary or Affiliate from any such claim that may arise; if, notwithstanding the foregoing, any such claim is allowed by a court of competent
jurisdiction, I shall be deemed irrevocably to have agreed to not to pursue such claim and agree to execute any and all documents necessary to request dismissal or withdrawal of such claim; 

(j) in the event of the termination of my status as an Eligible Employee (for any reason whatsoever, whether or not later found to be
invalid or in breach of employment laws in the jurisdiction where I am employed or the terms of my employment agreement, if any), my right to participate in the Plan and any options granted to me under the Plan, if any, will terminate effective as
of the date that I am no longer actively employed by the Company or one of its Designated Companies and, in any event, will not be extended by any notice period mandated under the employment laws in the jurisdiction in which I am employed or the
terms of my employment agreement, if any (e.g., active employment would not include a period of “garden leave” or similar period pursuant to the employment laws in the jurisdiction in which I am employed or the terms of my
employment agreement, if any); the Company shall have the exclusive discretion to determine when I am no longer actively employed for purposes of my participation in the Plan (including whether I may still be considered to be actively employed while
on a leave of absence); and 
 (k) the grant of the option to purchase shares of Common Stock under the Plan and the benefits
evidenced by the Subscription Agreement do not create any entitlement not otherwise specifically provided for in the Plan, or provided by the Company in its discretion, to have such rights or benefits transferred to, or assumed by, another company
nor to be exchanged, cashed out or substituted for, in connection with a sale of substantially all of the Company’s assets or a merger of the Company in which the Company is not the surviving corporation. 

  
 3 

 5. Data Privacy Consent. I understand that the Company and the
Employer may collect, where permissible under Applicable Law certain personal information about me, including, but not limited to, my name, home address and telephone number, date of birth, social insurance number or other identification number,
salary, nationality, job title, any shares of Common Stock or directorships held in the Company, details of all options granted under the Plan or any other entitlement to shares of Common Stock awarded, canceled, exercised, vested, unvested or
outstanding in my favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan. I understand that Company may transfer my Data to the United States, which is not considered by the European Commission to
have data protection laws equivalent to the laws in my country. The Company therefore maintains an EU-US Safe Harbor certification to protect my data consistent with data protection laws of the EU. 

I understand that the Company will transfer my Data to its designated broker, or such other stock plan service provider as may be
selected by the Company in the future, which is assisting the Company with the implementation, administration and management of the Plan. I understand that the recipients of the Data may be located in the United States or elsewhere, and that a
recipient’s country of operation (e.g., the United States) may have different data privacy laws that the European Commission or my jurisdiction does not consider to be equivalent to the protections in my country. I understand that I may request
a list with the names and addresses of any potential recipients of the Data by contacting my local human resources representative. I authorize the Company, the Company’s designated broker and any other possible recipients which may assist the
Company with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and managing my participation in the Plan. I
understand that Data will be held only as long as is necessary to implement, administer and manage my participation in the Plan. I understand that that I may, at any time, view Data, request additional information about the storage and processing of
Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing my local human resources representative. Further, I understand that I am providing the consents herein on a
purely voluntary basis. If I do not consent, or if I later seek to revoke my consent, my employment status or career with the Company or the Employer will not be adversely affected; the only adverse consequence of refusing or withdrawing my consent
is that the Company would not be able to grant me options under the Plan or other equity awards, or administer or maintain such awards. Therefore, I understand that refusing or withdrawing my consent may affect my ability to participate in the Plan.
For more information on the consequences of my refusal to consent or withdrawal of consent, I understand that I may contact my local human resources representative. 
 I understand that I have the right to access, and to request a copy of, the Data held about me. I also understand that I have the right to discontinue the collection, processing, or use of my Data, or
supplement, correct, or request deletion of my Data. To exercise my rights, I may contact my local human resources representative. 
 I hereby explicitly and unambiguously consent to the collection, use and transfer, in electronic or other form, of my personal data as described in the Subscription Agreement and

  
 4 

 
any other Plan materials by and among, as applicable, the Employer, the Company and its Parents, Subsidiaries and Affiliates for the exclusive purpose of implementing, administering and managing
my participation in the Plan. I understand that my consent will be sought and obtained for any processing or transfer of my data for any purpose other than as described in the Subscription Agreement and any other plan materials. 

6. No Advice Regarding Grant. The Company is not providing any tax, legal or financial advice, nor is the Company making any
recommendations or assessments regarding my participation in the Plan, or my acquisition or sale of the underlying shares of Common Stock. I am hereby advised to consult with my own personal tax, legal and financial advisors regarding my
participation in the Plan before taking any action related to the Plan. 
 7. Language. If I have received the
Subscription Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control, subject to
Applicable Laws. 
 8. Severability. The provisions of the Subscription Agreement are severable and if any one or
more provisions are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding and enforceable. 
 9. Waiver. I acknowledge that a waiver by the Company of breach of any provision of the Subscription Agreement shall not operate or be construed as a waiver of any other provision of the
Subscription Agreement, or of any subsequent breach by me or any other participant. 
 10. Electronic Delivery and
Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to options awarded under the Plan or options that may be awarded under the Plan by electronic means or request my consent to participate in the Plan by
electronic means. Such means of electronic delivery may include but do not necessarily include the delivery of a link to a Company intranet or the Internet site of a third party involved in administering the Plan, the delivery of the document via
e-mail or such other means of electronic delivery specified by the Company. I consent to the electronic delivery of the Plan documents and this Subscription Agreement. I acknowledge that I may receive from the Company a paper copy of any documents
delivered electronically at no cost to me by contacting the Company by telephone or in writing. I further acknowledge that I will be provided with a paper copy of any documents if the attempted electronic delivery of such documents fails. Similarly,
I understand that I must provide the Company or any designated third party administrator with a paper copy of any documents if the attempted electronic delivery of such documents fails. I may revoke my consent to the electronic delivery of documents
or may change the electronic mail address to which such documents are to be delivered (if I have provided an electronic mail address) at any time by notifying the Company of such revoked consent or revised e-mail address by telephone, postal service
or electronic mail. Finally, I understand that I am not required to consent to electronic delivery of documents. 

  
 5 

 APPENDIX B 

TWITTER, INC. 
 2013 EMPLOYEE STOCK PURCHASE PLAN 
 COUNTRY-SPECIFIC PROVISIONS FOR
NON-U.S. EMPLOYEES 
 Terms and Conditions 

I understand that this Appendix B includes additional terms and conditions that govern the options to purchase shares of Common Stock
granted to me under the Plan if I work in one of the countries listed below. If I am a citizen or resident of a country other than the one in which I am currently working (or if I am considered as such for local law purposes) or if I transfer
employment to another country after enrolling in the Plan, I acknowledge and agree that the Company will, in its discretion, determine the extent to which the terms and conditions herein will be applicable to me. 

Capitalized terms used but not otherwise defined herein shall have the meaning given to such terms in the Twitter, Inc. 2013 Employee
Stock Purchase Plan, the Subscription Agreement or Appendix A to the Subscription Agreement. 
 Notifications

 This Appendix B also includes notifications that contain information regarding securities laws, exchange controls and
certain other issues of which you should be aware with respect to your participation in the Plan. The information is based on the securities, exchange control and other laws in effect in the respective countries as of October 2013. Such laws are
often complex and change frequently. As a result, the Company recommends that you not rely on the information in this Appendix B as the only source of information relating to the consequences of your participation in the Plan because the information
included herein may be out of date at the time that you exercise your option and purchase shares of Common Stock under the Plan or subsequently sell such shares. 
 In addition, the information contained herein is general in nature and may not apply to your particular situation and the Company is not in a position to assure you of any particular result. Accordingly,
you are advised to seek appropriate professional advice as to how the relevant laws in my country may apply to your situation. 

Finally, if you are a citizen or resident of a country other than the one in which you are currently working (or if you are considered as
such for local law purposes) or if you move to another country after options have been granted to you under the Plan, the information contained herein may not be applicable to you. 

  
 6 

 AUSTRALIA 

Notifications 
 Securities Law Information. The offering and resale of shares of Common Stock acquired under the Plan to a person or entity resident in Australia may be subject to disclosure requirements under
Australian law. You should obtain legal advice regarding any applicable disclosure requirements prior to making any such offer. 

BRAZIL 
 Terms and Conditions 
 Authorization for Plan Participation. I
hereby authorize the Employer to make payroll deductions from each of my paychecks in that percentage of my Compensation specified in my election and I authorize the Employer, the Company or any Parent, Subsidiary or Affiliate of the Company to
remit such accumulated payroll deductions, on my behalf, to the United States of America, to purchase shares of Common Stock, as provided by Circular No. 3,280/05 of the Central Bank, under the terms of the Plan. 

Upon request of the Company or the Employer, I agree to execute a letter of authorization and any other agreements or consents that may
be required to enable the Employer, the Company or any Parent, Subsidiary or Affiliate of the Company (or any of their designated third parties) to remit my accumulated payroll deductions from Brazil for the purchase of shares. I understand that I
will not be able to participate in the Plan if I fail to execute a letter of authorization or any other form of agreement or consent that is required for the remittance of my payroll deductions. 

Compliance with Law. By enrolling in the Plan and accepting the terms of the Subscription Agreement, I acknowledge and agree to
comply with all applicable Brazilian laws and pay any and all applicable taxes associated with the purchase and the sale of shares acquired under the Plan. 
 Notifications 
 Report of Overseas Assets. If you are a
resident or domiciled in Brazil, you will be required to submit an annual declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of such assets and rights equals or exceeds US$100,000. Assets and
rights that must be reported include, but are not limited to, the shares of Common Stock acquired under the Plan. 

  
 7 

 CANADA 

Terms and Conditions 
 Labor Law Acknowledgement. This provision replaces the acknowledgement contained in Section 4(j) of Appendix A to the Subscription Agreement: 

In the event of the termination of my status as an Eligible Employee (for any reason whatsoever, whether or not later found to be invalid
or in breach of employment laws in the jurisdiction where I am employed or the terms of my employment agreement, if any), my right to participate in the Plan and any options granted to me under the Plan, if any, will terminate effective as of the
date that is the earlier of: (i) the date that my employment with the Company or the Employer is terminated; (ii) the date that I receive written notice of termination of my employment from the Company or the Employer (regardless of any
notice period or period of pay in lieu of such notice mandated under the employment laws in the jurisdiction where I am employed or the terms of my employment agreement, if any); or (iii) the date that I am no longer actively employed by the
Company or any of its Designated Companies, with such date being determined by the Company in its sole discretion. 
 The
following provisions will apply if you are a resident of Quebec: 
 Authorization to Release Necessary Personal
Information. I hereby authorize the Company (including any Parent, Subsidiary or Affiliate) and the Company’s representatives to discuss with and obtain all relevant information from all personnel, professional or not, involved in the
administration and operation of the Plan. I further authorize the Company and any Parent, Subsidiary or Affiliate and the Company’s designated Plan broker(s) to disclose and discuss the Plan with their advisors. I further authorize the Employer
to record such information and to keep such information in my employee file. 
 English Language Provision. I hereby
provide my consent to receive Plan information in English through my enrollment in the Plan. Specifically, I acknowledge as follows: 
 The parties acknowledge that it is their express wish that this Subscription Agreement, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or
relating directly or indirectly hereto, be drawn up in English. 
 Disposition relative à l’utilisation
de la langue anglaise. Par la présente, je consens à recevoir les informations relatives au Plan d’Achat d’Actions en anglais par le biais de mon inscription au Plan d’Achat d’Actions.
Particulièrement, je reconnais comme suit : 
 Les parties reconnaissent avoir exigé la
rédaction en anglais du Contrat de Souscription, ainsi que de tous documents exécutés, avis donnés et procédures judiciaires intentées, directement ou indirectement, relativement à la présente
convention. 
 Notifications 
 Securities Law Information. There may be securities law implications for you if you sell shares of Common Stock acquired through the Plan through a broker other than a broker appointed under the
Plan or the sale does not take place through the facilities of a stock exchange outside of Canada on which the shares of Common Stock are listed (i.e., the New York Stock Exchange). 

Tax Reporting Obligation. Foreign property (including options granted under the Plan and shares of Common Stock) held by Canadian
residents must be reported annually on Form T1135 

  
 8 

 
(Foreign Income Verification Statement) if the total value of such foreign property exceeds C$100,000 at any time during the year. The form must be filed by April 30th of the following year.

 FRANCE 
 Terms and Conditions 
 Language Consent. By completing the
enrollment process and submitting the Subscription Agreement, I confirm that I have read and understood the documents relating to the rights to purchase Common Stock (the Plan, the Subscription Agreement, Appendix A to the Subscription
Agreement and this Appendix B) which were provided to me in the English language. I accept the terms of these documents accordingly. 
 Consentement Relatif à la Langue Utilisée. En complétant et renvoyant le présent du Contrat de Souscription, je confirme avoir lu et compris les
documents relatifs aux droits d’acquisition d’Actions Ordinaires qui m’ont été remis en langue anglaise (le Plan, le Contrat de Souscription, Annexe A du Contrat de Souscription, Annexe B). J’accepte les
conditions afférentes à ces documents en connaissance de cause. 
 Payroll Deductions.
Section 2 of the Subscription Agreement has been translated into French in order to expressly authorize the payroll deductions under the Plan. 
 Prélèvements sur Salaires. La Section 2 du Contrat de Souscription a été traduite en français afin que vous puissiez autoriser de
manière expresse les prélèvements sur votre Rémunération dans le cadre du Plan d’Achat d’Actions. 
  

	 	•	 	 I hereby authorize payroll deductions from each paycheck in the amount of     % of my Compensation on each payday (from 0 to 15%)
during the Offering Period in accordance with the Plan. (Please note that no fractional percentages are permitted.) 

  

	 	•	 	 Par la présente, j’autorise un prélèvement sur salaires de     % de ma Rémunération (de
0% à 15%), sur chaque Rémunération versée au cours de la Période d’Offre conformément au Plan d’Achat d’Actions. (Veuillez noter que le pourcentage de retenue sur salaire ne peut être
qu’un chiffre entier, sans chiffre après la virgule.) 

 Notifications

 Tax Reporting Information. French residents may hold shares of Common Stock outside of France, provided that
they declare all foreign accounts, whether open, current or closed, on their annual income tax return. 
 Securities
Disclaimer. The participation in the Plan is exempt or excluded from the requirement to publish a prospectus under the EU Prospectus Directive as implemented in France. 

  
 9 

 GERMANY 

Notifications 
 Exchange Control Information. If you remit proceeds in excess of €12,500 out of or into Germany, such cross-border payment must be reported monthly to the State Central Bank. In the
event that you make or receive a payment in excess of this amount, I am responsible for obtaining the appropriate form from a German bank and complying with applicable reporting requirements. In addition, you must also report on an annual basis in
the unlikely event that you hold shares of Common Stock exceeding 10% of the total voting capital of the Company. 

Securities Disclaimer. The participation in the Plan is exempt or excluded from the requirement to publish a prospectus under the
EU Prospectus Directive as implemented in Germany. 
 INDIA 

Notifications 
 Exchange Control Information. Indian residents are required to repatriate any cash dividends paid on shares of Common Stock acquired under the Plan and any proceeds from the sale of such shares of
Common Stock to India within 90 days of receipt. Upon repatriation, the individual will receive a foreign inward remittance certificate (“FIRC”) from the bank where he or she deposits the foreign currency and he or she should maintain the
FIRC as evidence of the repatriation of funds in the event the Reserve Bank of India or the Employer requests proof of repatriation. It is your responsibility to comply with applicable exchange control laws in India. 

Tax Reporting Obligation. Indian residents are required to declare the following items in their annual tax return: (i) any
foreign assets held by them (including shares of Common Stock acquired under the Plan), and (ii) any foreign bank accounts for which they have signing authority. It is your responsibility to comply with applicable foreign asset tax laws in
India and you should consult with your personal tax advisor to ensure that you are properly reporting your foreign assets and bank accounts. 
 IRELAND 
 Notifications 

Director Notification Obligation. Directors, shadow directors or secretaries of an Irish Parent, Subsidiary or Affiliate must notify such Irish
Parent, Subsidiary or Affiliate in writing within five business days of receiving or disposing of an interest in the Company (e.g., options granted under the Plan, shares of Common Stock, etc.), or within five business days of becoming aware
of the event giving rise to the notification requirement or within five business days of becoming a director or secretary if such an interest exists at the time. This notification requirement also applies with respect to the interests of the spouse
or children under the age of 18 of the director, shadow director or secretary (whose interests will be attributed to the director, shadow director or secretary). 

  
 10 

 Securities Disclaimer. The participation in the Plan is exempt or excluded from the
requirement to publish a prospectus under the EU Prospectus Directive as implemented in Ireland. 
 JAPAN

 Notifications 
 Foreign Assets Reporting. Japanese residents holding assets outside of Japan (e.g., shares of Common Stock purchased under the Plan) with a value exceeding ¥50,000,000 (as of
December 31 each year) are required to comply with annual tax reporting obligations with respect to such assets. You should consult with a personal tax advisor in Japan to ensure that you are properly complying with these obligations.

 KOREA 
 Terms and Conditions 
 Power of Attorney. I am an employee
working for Twitter Korea Limited (“Twitter-Korea”), a corporation duly organized and existing under the laws of the Republic of Korea, and, by my election to participate in the Plan, I hereby appoint attorney-in-fact, Twitter-Korea
(including any successor entity), through its duly appointed representative, as my true and lawful representative, with full power and authority to do the following: 
  

	(i)	To prepare, execute and file any report/application and all other documents required for implementation of the Twitter, Inc. 2013 Employee Stock Purchase Plan in Korea;

  

	(ii)	To take any action that may be necessary or appropriate for implementation of said Plan with the competent Korean authorities, including but not limited to a foreign
exchange bank; and 

  

	(iii)	To constitute and appoint, in its place and stead, and as its substitute, one representative or more, with power of revocation. 

I hereby ratify and confirm as my own act and deed all that such representative may do or cause to be done by virtue of this instrument.

 Notifications 
 Exchange Control Notification. Exchange control laws require Korean residents who realize US$500,000 or more from the sale of shares of Common Stock in a single transaction to repatriate the
proceeds from such sale to Korea within 18 months of the sale. 

  
 11 

 NETHERLANDS 

Notifications 
 You should be aware of the Dutch insider trading rules, which may affect the sale of shares of Common Stock acquired under the Plan. In particular, you may be prohibited from effecting certain share
transactions if you have insider information regarding the Company. Below is a discussion of the applicable restrictions. You are advised to read the discussion carefully to determine whether the insider rules could apply to you. If it is uncertain
whether the insider rules apply, the Company recommends that you consult with a legal advisor. The Company cannot be held liable if you violate the Dutch insider trading rules. You are responsible for ensuring your compliance with these rules.

 Prohibition Against Insider Trading. 
 Dutch securities laws prohibit insider trading. The regulations are based upon the European Market Abuse Directive and are stated in section 5:56 of the Dutch Financial Supervision Act (Wet op het
financieel toezicht or Wft) and in section 2 of the Market Abuse Decree (Besluit marktmisbruik Wft). For further information you are referred to the website of the Authority for the Financial Markets (AFM);
http://www.afm.nl/~/media/Files/brochures/2012/insider-dealing.ashx. 
 Given the broad scope of the definition of inside
information, certain employees of the Company working at its Dutch Affiliate may have inside information and thus are prohibited from making a transaction in securities in the Netherlands at a time when they have such inside information. By entering
into this Subscription Agreement and participating in the Plan, you acknowledge having read and understood the notification above and acknowledges that it is the your responsibility to comply with the Dutch insider trading rules, as discussed
herein. 
 Securities Disclaimer. The participation in the Plan is exempt or excluded from the requirement to
publish a prospectus under the EU Prospectus Directive as implemented in the Netherlands. 
 SINGAPORE 

Terms and Conditions 
 Form of Contributions. Notwithstanding Sections 2 and 3 of the Subscription Agreement, due to restrictions on payroll deductions under Singapore law, I acknowledge and agree that I may be
required to participate in the Plan by means other than payroll deductions (e.g., bank wire or check) if the Company, in its discretion, determines that collection of payroll deductions is not permissible or administratively feasible under
Singapore law.
 In this regard and upon notice by the Company or the Employer, I understand and agree that no payroll
deductions will be made from my paychecks and that I will be required to make Contributions for the purchase of shares of Common Stock under the Plan by the means set forth 

  
 12 

 
in such notice. I further understand and agree that no shares of Common Stock will be purchased on my behalf under the Plan if I fail to submit my Contributions in the manner required by
such notice.
 Notifications 
 Securities Law Information. The grant of options under the Plan is being made pursuant to the “Qualifying Person” exemption under section 273(1)(f) of the Singapore Securities and Futures
Act (Chapter 289, 2006 Ed.) (“SFA”). The Plan has not been lodged or registered as a prospectus with the Monetary Authority of Singapore. Further, the options granted under the Plan are subject to section 257 of the SFA and you are not
permitted to sell, or offer to sell, any shares of Common Stock in Singapore unless such sale or offer is made pursuant to the exemptions under Part XIII Division (1) Subdivision (4) (other than section 280) of the SFA. 

Director Notification Obligation. Directors, associate directors or shadow directors of a Singapore Parent, Subsidiary or
Affiliate are subject to certain notification requirements under the Singapore Companies Act. Among these requirements is an obligation to notify such entity in writing within two business days of any of the following events: (i) the
acquisition or disposal of an interest (e.g., options granted under the Plan or shares of Common Stock) in the Company or any Parent, Subsidiary or Affiliate, (ii) any change in previously-disclosed interests (e.g., upon exercise
of options granted under the Plan), or (iii) becoming a director, associate director or shadow director of a Parent, Subsidiary or Affiliate in Singapore, if the individual holds such an interest at that time. 

Insider Trading Notification. You should be aware of the Singapore insider-trading rules as these rules may impact your ability to
acquire or dispose of shares of Common Stock or rights to acquire shares (e.g., options granted under the Plan). Under the Singapore insider-trading rules, you are prohibited from selling shares of Common Stock when you are in possession of
information concerning the Company which is not generally available and which you know or should know will have a material effect on the price of such shares once such information is generally available. 

SPAIN 
 Terms and Conditions 
 Nature of Grant. The following
provision supplements Section 4 of Appendix A to the Subscription Agreement: 
 By accepting the options, I consent to
participation in the Plan and acknowledge that I have received a copy of the Plan. I understand that the Company has unilaterally, gratuitously, and discretionarily decided to offer the Plan to individuals who may be employees of the Company or of
its Parents, Subsidiaries or Affiliates throughout the world. The decision is a temporary decision that is entered into upon the express assumption and condition that any grant of options will not economically or otherwise bind the Company or any of
its Parents, Subsidiaries or Affiliates presently or in the future, other than as expressly set forth in the 

  
 13 

 
Subscription Agreement, including Appendix A to the Subscription Agreement. Consequently, I understand that any grant of options is made on the assumption and condition that it shall not become a
part of any employment contract (either with the Company or any of its Parents, Subsidiaries or Affiliates) and shall not be considered a mandatory benefit, salary for any purpose (including severance compensation), or any other right whatsoever.
Further, I understand and freely accept that the Company does not guarantee that any benefit whatsoever shall arise from the option, which is gratuitous and discretionary, since the future value of the shares of Common Stock is unknown and
unpredictable. Finally, I understand that the Company would not be making this grant of options but for the assumptions and conditions referred to above; thus, I expressly acknowledge and freely accept that should any or all of the assumptions be
mistaken or should any of the conditions not be met for any reason, then the grant of options shall be null and void and the Plan shall not have any effect whatsoever. 
 I understand and agree that, as a condition of my participation in the Plan, the termination of my employment for any reason will automatically result in the cancellation of any options granted to me
under the Plan. In particular, I understand and agree that, unless otherwise expressly provided for by the Administrator, I will not be permitted to continue to participate in the Plan or to purchase shares of Common Stock under the Plan if I
terminate employment for by reason of, including, but not limited to: resignation, retirement, disciplinary dismissal adjudged to be with cause, disciplinary dismissal adjudged or recognized to be without cause, individual or collective layoff on
objective grounds, whether adjudged to be with cause or adjudged or recognized to be without cause, material modification of the terms of employment under Article 41 of the Workers’ Statute, relocation under Article 40 of the Workers’
Statute, Article 50 of the Workers’ Statute, unilateral withdrawal by the Employer, and under Article 10.3 of Royal Decree 1382/1985. 
 Notifications 
 Securities Law Information. The options
described in the Subscription Agreement, Appendix A to the Subscription Agreement and this Appendix B do not qualify under Spanish regulations as securities. No “offer of securities to the public,” as defined
under Spanish law, has taken place or will take place in the Spanish territory. The Subscription Agreement (including Appendix A to the Subscription Agreement and this Appendix B) has not been nor will it be registered with the
Comisión Nacional del Mercado de Valores, and does not constitute a public offering prospectus. 
 Foreign Assets
Reporting. Effective January 1, 2013, you may be subject to certain tax reporting requirements with respect to assets or rights that you hold outside of Spain, including bank accounts, securities and real estate if the aggregate value for
particular category of assets exceeds €50,000 as of December 31 each year. Shares of Common Stock acquired under the Plan or other equity programs offered by the Company constitute securities for purposes of this requirement, but unvested
awards (e.g., options, etc.) are not subject to this reporting requirement. 

  
 14 

 If applicable, you must report your foreign assets on Form 720 by no later than
March 31 following the end of the relevant year. After the rights and/or assets are initially reported, the reporting obligation will only apply if the value of previously-reported rights or assets increases by more than €20,000 as of each
subsequent December 31. You should consult with your personal advisor to determine any obligations in this respect. 

Share Reporting Requirement. The acquisition of shares of Common Stock must be declared for statistical purposes to the
Direccion General de Comercio e Inversiones (the “DGCI”), the Bureau for Commerce and Investments, which is a department of the Ministry of Economy and Competitiveness. Generally, the declaration must be filed in January for shares
owned as of December 31 of each year; however, if the value of the shares acquired or the amount of the sale proceeds exceeds €1,502,530, the declaration must be filed within one month of the acquisition or sale, as applicable. You should
consult with your personal advisor to determine your obligations in this respect. 
 Foreign Currency Payments. When
receiving foreign currency payments exceeding €50,000 derived from the ownership of shares of Common Stock (i.e., dividends or proceeds from the sale of the shares of Common Stock), you must inform the financial institution receiving the
payment of the basis upon which such payment is made. You will need to provide the following information: (i) your name, address, and fiscal identification number; (ii) the name and corporate domicile of the Company; (iii) the amount
of the payment and the currency used; (iv) the country of origin; (v) the reasons for the payment; and (vi) further information that may be required. 
 Foreign Assets and Transaction Reporting. Effective January 1, 2013, you may be required to electronically declare to the Bank of Spain any foreign accounts (including brokerage accounts held
abroad), any foreign instruments (e.g., shares of Common Stock) and any transactions with non-Spanish residents (including any payments of cash or shares made to you by the Company or a U.S. brokerage account) if the balances in such accounts
together with the value of such instruments as of December 31, or the volume of transactions with non-Spanish residents during the prior or current year, exceed €1,000,000. Once the €1,000,000 threshold has been surpassed in either
respect, you will generally be required to report all of your foreign accounts, foreign instruments and transactions with non-Spanish residents, even if the relevant threshold has not been crossed for an individual item. You will generally only be
required to report on an annual basis (by January 20 of each year, beginning with January 20, 2014); however, if the balances in your foreign accounts together with value of your foreign instruments or the volume of transactions with
non-Spanish residents exceed €100,000,000, more frequent reporting will be required. 
 Securities
Disclaimer. The participation in the Plan is exempt or excluded from the requirement to publish a prospectus under the EU Prospectus Directive as implemented in Spain. 

  
 15 

 UNITED KINGDOM 

Terms and Conditions 
 Tax Obligations. The following provision supplements Section 3 of Appendix A to the Subscription Agreement: 
 Tax-Related Items shall include Primary and, to the extent legally possible Secondary, Class 1 National Insurance Contributions. 
 I agree that the Company or the Employer may calculate the Tax-Related Items to be withheld and accounted for by reference to the maximum applicable rates, without prejudice to any right I may have to
recover any overpayment from relevant U.K. tax authorities. If payment or withholding of any income tax liability arising in connection with my participation in the Plan is not made by me to the Employer within ninety (90) days of the event
giving rise to such income tax liability or such other period specified in Section 222(1)(c) of the U.K. Income Tax (Earnings and Pensions) Act 2003 (the “Due Date”), I understand and agree that the amount of any uncollected income
tax will constitute a loan owed by me to the Employer, effective on the Due Date. I understand and agree that the loan will bear interest at the then-current official rate of Her Majesty’s Revenue and Customs, it will be immediately due and
repayable by me, and the Company and/or the Employer may recover it at any time thereafter by any of the means referred to in the Plan and/or this Subscription Agreement. Notwithstanding the foregoing, I understand and agree that if I am a director
or an executive officer of the Company (within the meaning of such terms for purposes of Section 13(k) of the Exchange Act), I will not be eligible for such a loan to cover the income tax liability. In the event that I am a director or
executive officer and the income tax is not collected from or paid by me by the Due Date, I understand that the amount of any uncollected income tax will constitute an additional benefit to me on which additional income tax and National Insurance
Contributions will be payable. I understand and agree that I be responsible for reporting and paying any income tax due on this additional benefit directly to Her Majesty’s Revenue and Customs under the self-assessment regime and for
reimbursing the Company or the Employer (as appropriate) for the value of any primary and (to the extent legally possible) secondary class 1 national insurance contributions due on this additional benefit which the Company or the Employer may
recover from me by any of the means referred to in the Plan and/or this Subscription Agreement. 
 Notwithstanding the
foregoing, if I am an executive officer or director (as within the meaning of Section 13(k) of the U.S. Securities and Exchange Act of 1934, as amended), the terms of the provision above will not apply. In the event that I am an executive
office or director and income tax is not collected from or paid by me by the Due Date, the amount of any uncollected income tax will constitute a benefit to me on which additional income tax and National Insurance Contributions (“NICs”)
(including Employer’s NICs, as defined below) may be payable. I understand that I will be responsible for reporting and paying any income tax due on this additional benefit directly to HMRC under the self-assessment regime and for reimbursing
the Company and/or the Employer (as appropriate) for the value of any NICs due on this additional benefit. 

  
 16 

 Notification 

Securities Disclaimer. Neither this Subscription Agreement nor Appendix is an approved prospectus for the purposes of
section 85(1) of the Financial Services and Markets Act 2000 (“FSMA”) and no offer of transferable securities to the public (for the purposes of section 102B of FSMA) is being made in connection with the Plan. The Plan is exclusively
available in the UK to bona fide employees and former employees and any other UK Subsidiary. 

  
 17 

 APPENDIX C 

TWITTER, INC. 
 2013 EMPLOYEE STOCK PURCHASE PLAN 
 NOTICE OF WITHDRAWAL 

The undersigned participant in the Offering Period of the Twitter, Inc. 2013 Employee Stock Purchase Plan that began on
            ,          (the “Offering Date”) hereby notifies the Company that he or she hereby withdraws from the Offering Period. He or
she hereby directs the Company to pay to the undersigned as promptly as practicable all the Contributions credited to his or her account with respect to such Offering Period. The undersigned understands and agrees that his or her option for such
Offering Period will be automatically terminated. The undersigned understands further that no further payroll deductions will be made for the purchase of shares in the current Offering Period and the undersigned will be eligible to participate in
succeeding Offering Periods only by delivering to the Company a new Subscription Agreement. 
  

			
	Name and Address of Participant:
	
	  

	
	  

	
	  

	
	Signature:
	
	  

		
	Date:EX-10.11

 Exhibit 10.11 
  

 
 October 1, 2013 

Dear Richard Costolo, 
 This letter agreement
(the “Agreement”) is entered into between Twitter, Inc., a Delaware corporation (“Company” or “we”), and you. This Agreement is effective as of the date you sign this Agreement, as indicated below. The purpose of this
Agreement is to confirm the current terms and conditions of your employment. 
 1. Position. Your title will continue to be
Chief Executive Officer and you will continue to report to the Board of Directors. You will continue to be a regular, full-time at-will employee. You will continue providing services from the Company’s San Francisco, California location. You
may be required to travel as one part of your duties. 
 2. Base Salary. The Company will continue to pay you a gross salary at
an annualized rate of Fourteen Thousand Dollars ($14,000), payable in accordance with the Company’s standard payroll schedule. This salary will be subject to adjustment from time to time in accordance with the employee compensation policies
then in effect. 
 3. Employee Benefits. As a regular employee of the Company, you will continue to be eligible to receive
Company-sponsored benefits in accordance with the terms of the applicable benefit plans. In addition, you will be entitled to paid vacation in accordance with the Company’s vacation policy, as in effect from time to time. 

4. Severance. The compensation committee of the Company’s board of directors has approved your participation in our
Change of Control and Severance Policy (the “Severance Policy”), based on your senior position with the Company. The Severance Policy sets forth the severance payments and benefits to which you would be entitled in connection with certain
terminations of employment occurring on or following a Company change of control. You will be provided a participation agreement under the Severance Policy outlining the payments and benefits for which you will be eligible. You will be asked to
return an executed copy to the Company. The payments and benefits under the Severance Policy will be in lieu of any other severance or other benefits you would otherwise be entitled to under any plan, program or policy that the Company may have been
in effect from time to time. 
 5. Employee Invention Assignment and Confidentiality Agreement. As an employee of the Company,
you will continue to have access to certain confidential information of the Company and you may, during the course of your employment, develop certain information or inventions that will be the property of the Company. To protect the interests of
the Company, your execution of this Agreement reaffirms the terms of the Employee Invention Assignment and Confidentiality Agreement (“Confidentiality Agreement”), which you executed when you joined the Company. 

6. Employment Relationship. Employment with the Company is for no specific period of time. Your employment with the Company will
continue to be “at will,” meaning that either you or the Company may terminate your employment at any time and for any reason, with or without cause. This is the full and complete agreement between you and the Company regarding the
duration of the employment relationship. Although your job duties, title, compensation and benefits, as well as the Company’s personnel policies and procedures may change from time to time, the “at will” nature of your employment, the
Confidentiality Agreement and the Dispute Resolution Policy may only be changed through an express written agreement signed by you and duly authorized officer of the Company (other than you). 

7. Outside Activities. While you render services to the Company, you agree that you will not engage in any other employment,
consulting, or other business activity that would create a conflict of interest with the Company, which includes engaging in any work that is competitive in nature. While you render services to the Company, you also agree to not assist any person or
entity in competing with the Company, in preparing to compete with the Company, or in hiring any employees or consultants of the Company. In addition, for a period of one (1) year after the termination of your services, you agree to not solicit
either directly or indirectly, any employee of the Company to leave the Company for other employment or assist any person or entity in doing the same. 

8. Taxes. All forms of compensation that are subject to income or payroll taxes will be reduced to reflect applicable income tax
withholding and payroll taxes. Any form of compensation that is subject to income or payroll taxes and that is not paid in cash will result in a reduction in cash compensation to reflect applicable income tax withholding and payroll taxes. 

 9. Dispute Resolution. We sincerely hope that no dispute will arise between us. If
a dispute should arise, it can be resolved through the Company’s Dispute Resolution Policy, which you previously executed when you joined the Company. 

10. Entire Agreement. This Agreement supersedes and replaces any prior agreements, representations or understandings, whether
written, oral or implied, between you and the Company relating to the subject matters described herein, including, but not limited to, your prior offer letter with the Company. This Agreement may not be amended or modified, except by an express
written agreement signed by both you and a duly authorized officer of the Company. 
 Please indicate your acceptance of this Agreement, and confirmation
that it contains our complete agreement regarding the terms and conditions of your employment, by signing the bottom portion of this Agreement and returning a copy to me. 

 

			
	Very truly yours,
	Twitter, Inc.
		
	By	 	 /s/ Mike Gupta

		 	Mike Gupta, Chief Financial Officer

 I have read, understood and accept all the provisions of this Agreement: 

 

	
	 /s/ Richard Costolo

	Richard Costolo
	
	  

	Date

  
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