A. Dolan 2015 Grantor Retained Annuity Trust #1C Helen Form 3 CABLEVISION SYSTEMS / A. Dolan 2015 Grantor Retained Annuity Trust #1C Helen ownership change

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Helen A. Dolan 2015 Grantor Retained Annuity Trust #1C

(Last) (First) (Middle)

C/O DOLAN FAMILY OFFICE

340 CROSSWAYS PARK DRIVE

(Street)

WOODBURY NY 11797

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/11/2015

3. Issuer Name and Ticker or Trading Symbol
CABLEVISION SYSTEMS CORP /NY [ CVC ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
Member of 13D Group

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Cablevision NY Group Class B Common Stock	(1)	(1)	Cablevision NY Group Class A Common Stock	7,800,000	(1)	D

Explanation of Responses:

1. Cablevision NY Group Class B Common Stock (the "Class B Common Stock") of the Issuer is convertible at the option of the holder on a share for share basis into Cablevision NY Group Class A Common Stock (the "Class A Common Stock") of the Issuer.

Remarks:

Exhibit List: EX-24 - Power of Attorney

	HELEN A. DOLAN 2012 GRANTOR RETAINED ANNUITY TRUST #1C By: /s/ Renzo Mori, Attorney-in-Fact	09/17/2015
	** 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 5 (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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