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 *

Bessemer Venture Partners VIII L.P.	2. Issuer Name and Ticker or Trading Symbol

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

__ X __ Director                      _____ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)	
(Last)          (First)          (Middle)

C/O BESSEMER VENTURE PARTNERS,, 1865 PALMER AVE., SUITE 104	3. Date of Earliest Transaction (MM/DD/YYYY)

3/5/2019		
(Street)

LARCHMONT, NY 10538
(City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)

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

___ Form filed by One Reporting Person
_ X _ 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  	3/5/2019  	 	J (1) (2)	  	769853   (1) (2)	D	$0.00   (1) (2)	1539707   (3)	I  	See footnotes   (3) (4) (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 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) 	On March 5, 2019, Bessemer Venture Partners VIII Institutional L.P. ("BVP VIII Inst") and Bessemer Venture Partners VIII L.P. ("BVP VIII", and together with BVP VIII Inst, the "BVP VIII Funds") distributed, for no consideration, 420,340, and 349,513 shares (collectively, the "Shares"), respectively, of Class A Common Stock to their limited partners and to Deer VIII & Co. L.P. ("Deer VIII L.P."), representing each such partner's pro rata interest in such Shares. On the same date, one or more of such limited partner(s) distributed, for no consideration, the Shares to certain of its or their members in an amount equal to each such member's or members' respective pro rata interests in the Shares. Finally, on the same date, Deer VIII L.P. distributed, for no consideration, the Shares it received from the distributions to its partners in an amount equal to each such partner's pro rata interest in the Shares.	
(2) 	(Continued from Footnote 1) All of the aforementioned distributions were made in accordance with the exemption afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.	
(3) 	After the distribution, 699,028 shares of Class A Common Stock are held by BVP VIII, and 840,679 shares of Class A Common Stock are held by BVP VIII Inst.	
(4) 	Deer VIII & Co. Ltd. ("Deer VIII Ltd.") is the general partner of Deer VIII L.P. and (Deer VIII L.P., Deer VIII Ltd. and the BVP VIII Funds are collectively referred to as the "BVP VIII Entities"), which is the general partner of the BVP VIII Funds. Deer VIII Ltd. and Deer VIII L.P. disclaim beneficial ownership of the securities held by the BVP VIII Funds, and this report shall not be deemed an admission that Deer VIII Ltd. and Deer VIII L.P. are the beneficial owners of such securities, except to the extent of their pecuniary interest therein, if any, by virtue of their direct and indirect general partner interests in the BVP VIII Funds.	
(5) 	Byron Deeter is a director of Twilio and is a director of Deer VIII Ltd. Mr. Deeter also is a director of Deer VII & Co. Ltd. ("Deer VII Ltd."), which is the general partner of Deer VII & Co. L.P. ("Deer VII L.P."), which is the general partner of Bessemer Venture Partners VII Institutional L.P. ("BVP VII Inst"), BVP VII Special Opportunity Fund L.P. ("BVP VII SOF") and Bessemer Venture Partners VII L.P. ("BVP VII"). Each of BVP VII Inst, BVP VII SOF, BVP VII and 15 Angels LLC, a wholly-owned subsidiary of BVP VII Inst (collectively, the "BVP VII Funds" and, together with Deer VII Ltd. and Deer VII L.P., the "BVP VII Entities"), beneficially owns shares of Twilio's Class B Common Stock. Mr. Deeter serves as a representative of the BVP VII Entities and the BVP VIII Entities on the Board of Directors of Twilio.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Bessemer Venture Partners VIII L.P.
C/O BESSEMER VENTURE PARTNERS,
1865 PALMER AVE., SUITE 104
LARCHMONT, NY 10538	X				
Bessemer Venture Partners VIII Institutional L.P.
C/O BESSEMER VENTURE PARTNERS
1865 PALMER AVENUE, SUITE 104
LARCHMONT, NY 10538	X				
Deer VIII & Co. L.P.
C/O BESSEMER VENTURE PARTNERS
1865 PALMER AVENUE, SUITE 104
LARCHMONT, NY 10538	X				
Deer VIII & Co. Ltd.
C/O BESSEMER VENTURE PARTNERS
1865 PALMER AVENUE, SUITE 104
LARCHMONT, NY 10538	X				

Signatures		
/s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd., the General Partner of Deer VIII & Co. L.P., the General Partner of Bessemer Venture Partners VIII L.P.		3/7/2019	
** Signature of Reporting Person		Date
	
/s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd		3/7/2019	
** Signature of Reporting Person		Date
	
/s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd., the General Partner of Deer VIII & Co. L.P		3/7/2019	
** Signature of Reporting Person		Date
	
/s/ Scott Ring, General Counsel, Deer VIII & Co. Ltd., the General Partner of Deer VIII & Co. L.P., the General Partner of Bessemer Venture Partners VIII Institutional L.P.		3/7/2019	
** 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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