Twitter, Inc.
TWITTER, INC. (Form: 3, Received: 11/06/2013 18:00:39)
Washington, D.C. 20549


OMB Number: 3235-0104
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person *

Costolo Richard

2. Date of Event Requiring Statement (MM/DD/YYYY)

3. Issuer Name and Ticker or Trading Symbol


(Last)        (First)        (Middle)


4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                            _____ 10% Owner
___ X ___ Officer (give title below)          _____ Other (specify below)
Chief Executive Officer /


SAN FRANCISCO, CA 94103       

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed (MM/DD/YYYY)


6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock   566920   I   See footnote   (1)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)
2. Date Exercisable and Expiration Date
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy)     (2) 9/3/2019   Common Stock   3752606   $0.4283   D    
Employee Stock Option (right to buy)     (3) 11/22/2020   Common Stock   4110284   $1.83   D    
Employee Stock Option (right to buy)     (4) 4/11/2022   Common Stock   388440   $14.42   D    
Employee Stock Option (right to buy)     (2) 9/3/2019   Common Stock   273000   $0.4283   I   See footnote   (5)

Explanation of Responses:
( 1)  The shares are held of record by the Richard Costolo 2001 Living Trust dated February 8, 2001, for which the Reporting Person serves as trustee, and the Lorin Costolo 2001 Living Trust dated February 8, 2001, for which the Reporting Person's spouse serves as trustee.
( 2)  The option is fully vested and immediately exercisable.
( 3)  One-fourth of the shares subject to the option vested on November 22, 2011 and 1/48th of the shares vest monthly thereafter.
( 4)  6.25% of the shares subject to the option vest on each of July 1, 2014, October 1, 2014, January 1, 2015 and April 1, 2015, and 18.75% of the shares subject to the option vest on each of of July 1, 2015, October 1, 2015, January 1, 2016 and April 1, 2016.
( 5)  The option is held of record by the Northern Trust Company, as Trustee of the Lorin Costolo 2012 Gift Trust. Ms. Costolo is the spouse of the Reporting Person.

Exhibit 24 - Power of Attorney

The Reporting Person holds restricted stock units awarded prior to February 1, 2013 (the "Pre-2013 RSUs"), the vesting of which is subject to the satisfaction of both a service condition and a performance condition. Accordingly, the Pre-2013 RSUs are not yet reportable for purposes of Section 16 and are not included in this Form 3. The performance condition will be satisfied on the earlier of (i) the date that is the earlier of (x) six months after the effective date of the Issuer's initial public offering or (y) March 8th of the calendar year following the effective date of the Issuer's initial public offering (which the Issuer may elect to accelerate to February 15th); and (ii) the date of a change in control.

Reporting Owners
Reporting Owner Name / Address
Director 10% Owner Officer Other
Costolo Richard
Chief Executive Officer

/s/ Sean Edgett, attorney-in-fact 11/6/2013
** Signature of Reporting Person Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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                                                                      Exhibit 24

                                POWER OF ATTORNEY

     The undersigned, as a Section 16 reporting person of Twitter, Inc. (the
"Company"), hereby constitutes and appoints each of Mike Gupta, Vijaya Gadde and
Sean Edgett, the undersigned's true and lawful attorney-in-fact to:

     1.   prepare,execute  in the  undersigned's  name and on the  undersigned's
          behalf,  and submit to the  Securities  and Exchange  Commission  (the
          "SEC")  a  Form  ID,  including  amendments  thereto,  and  any  other
          documents necessary or appropriate to obtain EDGAR codes and passwords
          enabling the  undersigned to make  electronic  filings with the SEC of
          reports  required by Section 16(a) of the  Securities  Exchange Act of
          1934 or any rule or regulation of the SEC;

     2.   complete and execute Forms 3, 4 and 5 and other forms and all
          amendments thereto as such attorney-in-fact shall in his discretion
          determine to be required or advisable pursuant to Section 16 of the
          Securities Exchange Act of 1934 (as amended) and the rules and
          regulations promulgated thereunder, or any successor laws and
          regulations, as a consequence of the undersigned's ownership,
          acquisition or disposition of securities of the Company; and

     3.   do all acts necessary in order to file such forms with the SEC, any
          securities exchange or national association, the Company and such
          other person or agency as the attorney-in-fact shall deem appropriate.

     The undersigned hereby ratifies and confirms all that said attorney-in-fact
and agent shall do or cause to be done by virtue hereof. The undersigned
acknowledges that the foregoing attorney-in-fact, in serving in such capacity at
the request of the undersigned, is not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934 (as amended).

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
Company and the foregoing attorney-in-fact.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 30th day of October, 2013.

                                         Signature: /s/ Richard Costolo

                                         Print Name: Richard Costolo