SYMC Symantec Corporation

[X] 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 * SLP IV Mustang Holdings, L.P.	2. Issuer Name and Ticker or Trading Symbol SYMANTEC CORP [ SYMC ]	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 SILVER LAKE, 2775 SAND HILL ROAD, SUITE 100	3. Date of Earliest Transaction (MM/DD/YYYY) 10/17/2019
(Street) MENLO PARK, CA 94025 (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

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
2.500% Convertible Senior Notes due 2021 (1)(2)	$16.77 (4)	10/17/2019		J (1)(2)			$250000000.00	(5)	(6)	Common Stock	14908525 (7)	$0.00 (1)(2)	$0.00 (1)(2)	I	Held through SLP IV Mustang Holdings, L.P. (3)

Explanation of Responses:
(1)	The aggregate amount of 2.500% Convertible Senior Notes due 2021 ("Convertible Notes") held by Silver Lake Group, L.L.C. and/or its affiliates has not changed since the date of original acquisition, and is not changing now. This Form 4 is filed by SLP IV Mustang Holdings, L.P. ("Mustang") and its general partner, SLP IV Mustang GP, L.L.C. ("Mustang GP"), in connection with an internal reorganization of an entity holding the Convertible Notes on behalf of certain investment funds ("SLP Funds"). In connection with such internal reorganization, Mustang made an in-kind distribution of the Convertible Notes it directly held to a new affiliated holding vehicle, SLP IV Seal II Holdings, L.P. ("SLP IV Seal II"). SLP IV Seal II and its general partner, SLP IV Seal II GP, L.L.C. are separately filing a Form 3 reporting SLP IV Seal II's ownership of the Convertible Notes.
(2)	The transfer referred to above in footnote (1) did not represent any change in pecuniary interest of any of the SLP Funds or their affiliates. Not included on this form is $250 million principal amount of Convertible Notes acquired by SLP IV Seal Holdings, L.P.in the original acquisition, which SLP IV Seal Holdings, L.P. continues to hold.
(3)	Mustang GP is the general partner of Mustang. Silver Lake Technology Associates IV Cayman, L.P. ("SLTA") is the sole member of Mustang GP. Silver Lake (Offshore) AIV GP IV, Ltd. is the general partner of SLTA.
(4)	The current conversion rate of 59.6341 per $1,000 principal amount of Convertible Notes is equivalent to a conversion price of approximately $16.77 per share of Common Stock.
(5)	Pursuant to the terms of an investment agreement, dated as of February 3, 2016, the Convertible Notes became convertible by the holder on February 2, 2017, subject to certain exceptions.
(6)	The Convertible Notes mature on April 1, 2021, subject to earlier redemption, repurchase or conversion in accordance with their terms.
(7)	Upon conversion of the Convertible Notes, the Issuer will deliver, at its election, cash, shares of the Issuer's common stock ("Common Stock") or a combination of cash and shares of Common Stock. This number represents the number of shares of Common Stock issuable upon conversion of the $250 million principal amount of Convertible Notes if the Issuer elects to settle its conversion obligation solely through shares of Common Stock by delivering a number of shares of Common Stock at the conversion rate of 59.6341 shares of Common Stock, and cash in lieu of fractional shares of Common Stock, per $1,000 principal amount of Convertible Notes. The conversion rate is subject to adjustment from time to time upon the occurrence of certain customary events in accordance with the terms of an indenture, dated as of March 4, 2016, by and between the Issuer and Wells Fargo Bank, National Association, as trustee.

Remarks: The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). This filing shall not be deemed an admission that any Reporting Person engaged in a transaction subject to Section 16 of the Exchange Act or was a beneficial owner of all securities covered by this filing for purposes of Section 16 of the Exchange Act or otherwise, and each Reporting Person disclaims beneficial ownership of these securities, except to the extent of such Reporting Person's pecuniary interest therein, if any.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SLP IV Mustang Holdings, L.P. C/O SILVER LAKE 2775 SAND HILL ROAD, SUITE 100 MENLO PARK, CA 94025	X
SLP IV Mustang GP, L.L.C. C/O SILVER LAKE 2775 SAND HILL ROAD, SUITE 100 MENLO PARK, CA 94025	X

Signatures
/s/ Andrew J. Schader, Secretary of SLP IV Mustang GP, L.L.C., general partner of SLP IV Mustang Holdings, L.P.		10/18/2019
**Signature of Reporting Person		Date
/s/ Andrew J. Schader, Secretary of SLP IV Mustang GP, L.L.C.		10/18/2019
**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).
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