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 *

Lawson Jeff
2. Issuer Name and Ticker or Trading Symbol

TWILIO INC [ TWLO ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    __X__ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Executive Officer
(Last)          (First)          (Middle)

C/O TWILIO INC., 101 SPEAR STREET, FIRST FLOOR
3. Date of Earliest Transaction (MM/DD/YYYY)

5/17/2021
(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 5/17/2021  F(1)  3155 D$299.40 127136 (2)D  
Class A Common Stock 5/17/2021  G(3)  3207 D$0 123929 (2)D  
Class A Common Stock 5/17/2021  G(4)  3207 A$0 45079 I By Lawson Revocable Trust (5)

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 Security3. Trans. Date3A. Deemed Execution Date, if any4. 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 Date7. 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares

Explanation of Responses:
(1) Represents shares of Class A common stock that were withheld by the Issuer to satisfy tax withholding obligations of the Reporting Person in connection with the vesting of Restricted Stock Units ("RSUs").
(2) A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.
(3) Represents shares that were contributed by the Reporting Person to the Reporting Person's trust.
(4) Represents the shares received by the Reporting Person's trust.
(5) Erica Freeman Lawson and Jeffrey Gordon Lawson Trustees of the Lawson Revocable Trust dated 10/2/11.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Lawson Jeff
C/O TWILIO INC.
101 SPEAR STREET, FIRST FLOOR
SAN FRANCISCO, CA 94105
XXChief Executive Officer

Signatures
/s/ Karyn Smith as attorney in fact for Reporting Person5/19/2021
**Signature of Reporting PersonDate

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