Twilio (TWLO) CFO reports 8,109-share sell-to-cover RSU tax transaction

Rhea-AI Filing Summary

Twilio Inc.'s Chief Financial Officer reported an automatic sale of Class A common stock tied to tax obligations. On 12/31/2025, the officer sold 8,109 shares in a mandated "sell-to-cover" transaction to satisfy minimum statutory tax withholding related to vesting of restricted stock units. The weighted average sale price was $143.3802 per share, with individual trades ranging from $142.82 to $143.73 per share. After this transaction, the officer beneficially owned 119,449 shares, a portion of which are restricted stock units that each represent a contingent right to receive one share of Class A common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Viggiano Aidan

(Last) (First) (Middle)

101 SPEAR STREET, FIFTH FLOOR

(Street)

SAN FRANCISCO CA 94105

(City) (State) (Zip)

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 Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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	12/31/2025		S		8,109(1)	D	$143.3802(2)	119,449(3)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: 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 $142.82 to $143.73 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.

Remarks:

	/s/ Juliana Chen as attorney-in-fact for Reporting Person	01/05/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Twilio (TWLO) disclose in this filing?

The filing reports that Twilio's Chief Financial Officer sold 8,109 shares of Class A common stock on 12/31/2025 in connection with tax withholding for vesting restricted stock units.

Was the Twilio (TWLO) CFO’s stock sale discretionary?

No. The sale was described as a mandated "sell-to-cover" transaction under Twilio's equity incentive plans to satisfy minimum statutory tax withholding obligations, not a discretionary sale by the officer.

What price did the Twilio (TWLO) CFO receive for the shares sold?

The reported weighted average sale price was $143.3802 per share, with individual sales occurring at prices between $142.82 and $143.73 per share.

How many Twilio (TWLO) shares does the reporting person own after this transaction?

Following the reported transaction, the officer beneficially owned 119,449 shares of Twilio Class A common stock, including a portion held as restricted stock units.

What do the Twilio (TWLO) restricted stock units (RSUs) represent?

Each restricted stock unit represents a contingent right to receive one share of Twilio's Class A common stock, typically upon satisfying vesting conditions.

What is the role of the reporting person in Twilio (TWLO)?

The reporting person is an officer of Twilio, serving as the Chief Financial Officer, as indicated in the filing.