FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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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 * Hu George 2. Issuer Name and Ticker or Trading Symbol TWILIO INC [ TWLO ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Operating Officer
(Last)         (First)         (Middle)
C/O TWILIO INC., 101 SPEAR STREET, FIRST FLOOR		 3. Date of Earliest Transaction (MM/DD/YYYY)
2/16/2021
(Street)
SAN FRANCISCO, CA 94105
(City)       (State)       (Zip)
 4. 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock  2/16/2021    S    1000 (1) D $429.28 (2) 109101 (3) D   
Class A Common Stock  2/16/2021    S    200 (1) D $429.89  108901 (3) D   
Class A Common Stock  2/16/2021    S    3018 (1) D $432.8054 (4) 105883 (3) D   
Class A Common Stock  2/16/2021    S    2800 (1) D $433.77 (5) 103083 (3) D   
Class A Common Stock  2/16/2021    S    500 (1) D $434.702 (6) 102583 (3) D   
Class A Common Stock  2/16/2021    S    100 (1) D $435.59  102483 (3) D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Explanation of Responses:
(1)  Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.
(2)  The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $428.78 to $429.63 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(3)  A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.
(4)  The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $432.36 to $433.35 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(5)  The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $433.40 to $434.28 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(6)  The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $434.50 to $435.00 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Hu George
C/O TWILIO INC.
101 SPEAR STREET, FIRST FLOOR
SAN FRANCISCO, CA 94105

Chief Operating Officer

Signatures
/s/ Karyn Smith as attorney in fact for Reporting Person 2/18/2021
**Signature of Reporting Person Date