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., 375 BEALE STREET, SUITE 300	3. Date of Earliest Transaction (MM/DD/YYYY)

7/16/2018		
(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				

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					
Class B Common Stock   (1)	  (1)	7/16/2018  	 	F  	  	  	5888   (2)  	  (1)	  (1)	Class A Common Stock  	5888  	$61.14  	77237   (3)	D  	 	
Class B Common Stock   (1)	  (1)	7/16/2018  	 	G   (4)	  V	  	5987   	  (1)	  (1)	Class A Common Stock  	5987  	$0  	71250   (3)	D  	 	
Class B Common Stock   (1)	  (1)	7/16/2018  	 	G   (5)	  V	5987   	  	  (1)	  (1)	Class A Common Stock  	5987  	$0  	6125967  	I  	By Lawson Revocable Trust   (6)	
Class B Common Stock   (1)	  (1)	 	 	   	  	  	  	  (1)	  (1)	Class A Common Stock  	740364  	 	740364  	I  	By Lawson 2014 GRAT   (7)	
Class B Common Stock   (1)	  (1)	 	 	   	  	  	  	  (1)	  (1)	Class A Common Stock  	323170  	 	323170  	I  	By Lawson 2014 Irrevocable Trust   (8)	

Explanation of Responses:	
(1) 	Each share of Class B common stock is convertible into one share of Class A common stock at the option of the holder and has no expiration date.	
(2) 	Represents shares of Class B common stock that were withheld by the Issuer to satisfy tax withholding obligations of the Reporting Person in connection with the vesting of RSUs.	
(3) 	A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock.	
(4) 	Represents shares that were contributed by the Reporting Person to the Reporting Person's trust.	
(5) 	Represents the shares received by the Reporting Person's trust.	
(6) 	Erica Freeman Lawson and Jeffrey Gordon Lawson Trustees of the Lawson Revocable Trust dated 10/2/11.	
(7) 	Jeffrey Gordon Lawson Trustee of the Lawson 2014 GRAT dated 12/29/14.	
(8) 	JP Morgan Trust Company of Delaware Trustee U/A 12/29/14 Lawson 2014 Irrevocable Trust.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Lawson Jeff
C/O TWILIO INC.
375 BEALE STREET, SUITE 300
SAN FRANCISCO, CA 94105	X	X	Chief Executive Officer		

Signatures		
/s/ Alexis Rhorer as attorney in fact for Reporting Person		7/18/2018	
** 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 4(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).	
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
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