CABLEVISION SYSTEMS CORP /NY
SC 13G, 1999-11-15
CABLE & OTHER PAY TELEVISION SERVICES
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<PAGE>   1


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


                                  SCHEDULE 13G


                    UNDER THE SECURITIES EXCHANGE ACT OF 1934


                         Cablevision Systems Corporation
                     ---------------------------------------
                                (Name of Issuer)


                 Class A Common Stock, par value $.01 per share
               --------------------------------------------------
                         (Title of Class of Securities)


                                  12686C-10-9
                               ------------------
                                 (CUSIP Number)


                                November 3, 1999
             -------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[ ] Rule 13d-1(b)

[X] Rule 13d-1(c)

[ ] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosure provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of the section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


                                  Page 1 of 18

<PAGE>   2


1      NAME OF REPORTING PERSON                       Dolan Family LLC

       I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS    Pending
       (ENTITIES ONLY)

- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

                                                                        Delaware
- --------------------------------------------------------------------------------
                 5.     SOLE VOTING POWER

 NUMBER OF

  SHARES                                                                     0
                 ---------------------------------------------------------------
BENEFICIALLY     6.     SHARED VOTING POWER

 OWNED BY

   EACH                                                                      0
                 ---------------------------------------------------------------
 REPORTING       7.     SOLE DISPOSITIVE POWER

  PERSON

   WITH                                                                       0
                 ---------------------------------------------------------------
                 8.     SHARED DISPOSITIVE POWER
                                                                       5,000,000

- --------------------------------------------------------------------------------
9.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       5,000,000

- --------------------------------------------------------------------------------
10.    CHECK  IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES    [X]*

- --------------------------------------------------------------------------------
11.    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
                                                                            3.8%
- --------------------------------------------------------------------------------
12.    TYPE OF REPORTING PERSON
                                                                              OO
- --------------------------------------------------------------------------------

* Dolan Family LLC disclaims beneficial ownership of 5,262,348 shares owned by
other Reporting Persons as to which it has no voting or dispositive power.


                                  Page 2 of 18
<PAGE>   3


1      NAME OF REPORTING PERSON                     Edward C. Atwood, as Manager
                                              of Dolan Family LLC and as Trustee
                                                    for Dolan Descendants Trust,
                                                      Dolan Progeny Trust, Dolan
                                                   Grandchildren Trust and Dolan
                                                                    Spouse Trust

       I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS                Not Applicable
       (ENTITIES ONLY)
- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
                                                                          U.S.A.
- --------------------------------------------------------------------------------
                 5.     SOLE VOTING POWER
 NUMBER OF

  SHARES                                                                      0
                 ---------------------------------------------------------------
BENEFICIALLY     6.     SHARED VOTING POWER

 OWNED BY

   EACH                                                                5,071,280
                 ---------------------------------------------------------------
 REPORTING       7.     SOLE DISPOSITIVE POWER

  PERSON

   WITH                                                                       0
                 ---------------------------------------------------------------
                 8.     SHARED DISPOSITIVE POWER
                                                                       5,071,280

- --------------------------------------------------------------------------------
9.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       5,071,280

- --------------------------------------------------------------------------------
10.    CHECK  IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES    [X]*

- --------------------------------------------------------------------------------
11.    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
                                                                            3.8%
- --------------------------------------------------------------------------------
12.    TYPE OF REPORTING PERSON
                                                                             IN
- --------------------------------------------------------------------------------

* Edward C. Atwood, as Manager of Dolan Family LLC and as Trustee of the trusts
listed above, disclaims beneficial ownership of 5,191,068 shares owned by other
Reporting Persons as to which he has no voting or dispositive power.


                                  Page 3 of 18
<PAGE>   4


1      NAME OF REPORTING PERSON         Kathleen M. Dolan, individually and as
                                        Trustee for Dolan Descendants Trust,
                                        Dolan Progeny Trust, Dolan
                                        Grandchildren Trust, Dolan Spouse Trust,
                                        DC Kathleen Trust, and as Director of
                                        Dolan Children's Foundation

       I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
       (ENTITIES ONLY)                                            Not Applicable
- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
                                                                          U.S.A.
- --------------------------------------------------------------------------------
                 5.     SOLE VOTING POWER
 NUMBER OF

  SHARES                                                                   4,000
                 ---------------------------------------------------------------
BENEFICIALLY     6.     SHARED VOTING POWER

  OWNED BY

    EACH                                                               7,860,744
                 ---------------------------------------------------------------
 REPORTING       7.     SOLE DISPOSITIVE POWER

  PERSON

   WITH                                                                   4,000
                 ---------------------------------------------------------------
                 8.     SHARED DISPOSITIVE POWER
                                                                       7,860,744

- --------------------------------------------------------------------------------
9.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       7,864,744

- --------------------------------------------------------------------------------
10.    CHECK  IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES    [X]*

- --------------------------------------------------------------------------------
11.    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
                                                                            5.8%
- --------------------------------------------------------------------------------
12.    TYPE OF REPORTING PERSON
                                                                             IN
- --------------------------------------------------------------------------------

* Kathleen M. Dolan, individually and as Trustee and Director of the trusts and
foundation listed above, disclaims beneficial ownership of 2,397,604 shares
owned by other Reporting Persons as to which she has no voting or dispositive
power.

                                  Page 4 of 18

<PAGE>   5


1      NAME OF REPORTING PERSON                  Marianne Dolan Weber,
                                                 individually and as Trustee for
                                                 Dolan Descendants Trust, Dolan
                                                 Progeny Trust, Dolan
                                                 Grandchildren Trust, Dolan
                                                 Spouse Trust, DC Marianne Trust
                                                 and as Director of Dolan
                                                 Children's Foundation

       I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
       (ENTITIES ONLY)                                            Not Applicable
- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
                                                                          U.S.A.
- --------------------------------------------------------------------------------
                 5.     SOLE VOTING POWER
 NUMBER OF

  SHARES                                                                   4,000
                 ---------------------------------------------------------------
BENEFICIALLY     6.     SHARED VOTING POWER

  OWNED BY

   EACH                                                                7,825,420
                 ---------------------------------------------------------------
 REPORTING       7.     SOLE DISPOSITIVE POWER

  PERSON

   WITH                                                                    4,000
                 ---------------------------------------------------------------
                 8.     SHARED DISPOSITIVE POWER
                                                                       7,825,420

- --------------------------------------------------------------------------------
9.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       7,829,420

- --------------------------------------------------------------------------------
10.    CHECK  IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES    [X]*

- --------------------------------------------------------------------------------
11.    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
                                                                            5.8%
- --------------------------------------------------------------------------------
12.    TYPE OF REPORTING PERSON
                                                                             IN
- --------------------------------------------------------------------------------

* Marianne Dolan Weber, individually and as Trustee and Director of the trusts
and foundation listed above, disclaims beneficial ownership of 2,432,928 shares
owned by other Reporting Persons as to which she has no voting or dispositive
power.


                                  Page 5 of 18

<PAGE>   6


1      NAME OF REPORTING PERSON                  Deborah Dolan-Sweeney,
                                                 individually and as Trustee for
                                                 Dolan Descendants Trust, Dolan
                                                 Progeny Trust, Dolan
                                                 Grandchildren Trust, Dolan
                                                 Spouse Trust, DC Deborah Trust
                                                 and as Director of Dolan
                                                 Children's Foundation

       I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
       (ENTITIES ONLY)                                            Not Applicable
- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
                                                                          U.S.A.
- --------------------------------------------------------------------------------
                 5.     SOLE VOTING POWER
 NUMBER OF

  SHARES                                                                  4,000
                 ---------------------------------------------------------------
BENEFICIALLY     6.     SHARED VOTING POWER

  OWNED BY

    EACH                                                               7,860,744
                 ---------------------------------------------------------------
  REPORTING      7.     SOLE DISPOSITIVE POWER

   PERSON

    WITH                                                                  4,000
                 ---------------------------------------------------------------
                 8.     SHARED DISPOSITIVE POWER
                                                                       7,860,744

- --------------------------------------------------------------------------------
9.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                       7,864,744

- --------------------------------------------------------------------------------
10.    CHECK  IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES    [X]*

- --------------------------------------------------------------------------------
11.    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
                                                                            5.8%
- --------------------------------------------------------------------------------
12.    TYPE OF REPORTING PERSON
                                                                             IN
- --------------------------------------------------------------------------------

* Deborah Dolan-Sweeney, individually and as Trustee and Director of the trusts
and foundation listed above, disclaims beneficial ownership of 2,397,604 shares
owned by other Reporting Persons as to which she has no voting or dispositive
power.


                                  Page 6 of 18
<PAGE>   7

                       CONTINUATION PAGES TO SCHEDULE 13G


ITEM 1(a)     NAME OF ISSUER:

              Cablevision Systems Corporation

ITEM 1(b)     ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

              111 Stewart Avenue
              Bethpage, New York 11714

ITEM 2(a)     NAME OF PERSON FILING:

              This Statement is being filed by the persons (the "Reporting
              Persons") identified in the cover pages hereto.

ITEM 2(b)     ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

              The address of the principle place of business for each Reporting
              Person is:
              c/o William A. Frewin
              340 Crossways Park Drive
              Woodbury, New York  11797

ITEM 2(c)     CITIZENSHIP:

              Dolan Family LLC is a limited liability company formed in
              Delaware.
              Each other Reporting Person is a citizen of the U.S.A.

ITEM 2(d)     TITLE OF CLASS OF SECURITIES:

              Class A Common Stock.

ITEM 2(e)     CUSIP NUMBER:

              12686C-10-9

ITEM 3.       IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b), OR 13d-2(b)
              OR (c), CHECK WHETHER THE PERSON FILING IS:

              Not Applicable.


                                  Page 7 of 18

<PAGE>   8


ITEM 4.       OWNERSHIP

              (a)    AMOUNT BENEFICIALLY OWNED

                     The amount of shares beneficially owned by each Reporting
                     Person is set forth in Item 9 of the cover pages hereto,
                     which are incorporated herein by reference.

              (b)    PERCENT OF CLASS:

                     The percent of the class beneficially owned by each
                     Reporting Person is set forth in Item 11 of the cover pages
                     hereto, which are incorporated herein by reference.

              (c)    NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:

                     (i)   SOLE POWER TO VOTE OR TO DIRECT THE VOTE:

                     (ii)  SHARED POWER TO VOTE OR TO DIRECT THE VOTE:

                     (iii) SOLE POWER TO DISPOSE OR TO DIRECT THE DISPOSITION
                           OF:

                     (iv)  SHARED POWER TO DISPOSE OR TO DIRECT THE DISPOSITION
                           OF:

                     The number of shares as to which each Reporting Person has
                     sole or shared voting power and sole or shared dispositive
                     power is set forth in Items 5 through 8 of the cover pages
                     hereto, which are incorporated herein by reference.

ITEM 5.       OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

              Not Applicable.

ITEM 6.       OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

              See Exhibit A hereto.

ITEM 7.       IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
              THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.

              Not applicable.


                                  Page 8 of 18
<PAGE>   9


ITEM 8.       IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

              See Exhibit B hereto.

ITEM 9.       NOTICE OF DISSOLUTION OF GROUP.

              Not applicable.

ITEM 10.      CERTIFICATION.

       By signing below I certify that, to the best of my knowledge and belief,
       the securities referred to above were not acquired and are not held for
       the purpose of or with the effect of changing or influencing the control
       of the issuer of the securities and were not acquired and are not held in
       connection with or as a participant in any transaction having that
       purpose or effect.


                                  Page 9 of 18
<PAGE>   10


SIGNATURE.

              After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this Statement is true,
complete and correct.

Date:  November  15, 1999

                                       Dolan Family LLC

                                       By:  Edward C. Atwood,
                                            as Manager

                                       By:                 *
                                            ---------------------------------


                                       Edward C. Atwood,
                                       as Trustee for Dolan Descendants Trust,
                                       Dolan Progeny Trust, Dolan
                                       Grandchildren Trust and Dolan Spouse
                                       Trust

                                       By:                 *
                                            ---------------------------------


                                       Kathleen M. Dolan,
                                       individually and as Trustee for Dolan
                                       Descendants Trust, Dolan Progeny Trust,
                                       Dolan Grandchildren Trust, Dolan Spouse
                                       Trust, DC Kathleen Trust, and as
                                       Director of  Dolan Children's Foundation

                                       By:                 *
                                            ---------------------------------


                                  Page 10 of 18
<PAGE>   11


                                       Marianne Dolan Weber
                                       individually and as Trustee
                                       for Dolan Descendants
                                       Trust, Dolan Progeny Trust,
                                       Dolan Grandchildren Trust,
                                       Dolan Spouse Trust, DC
                                       Marianne Trust, and as
                                       Director of  Dolan
                                       Children's Foundation


                                       By:                 *
                                            ---------------------------------


                                       Deborah Dolan Sweeney
                                       individually and as Trustee
                                       for Dolan Descendants
                                       Trust, Dolan Progeny Trust,
                                       Dolan Grandchildren Trust,
                                       Dolan Spouse Trust, DC
                                       Deborah Trust, and as
                                       Director of  Dolan
                                       Children's Foundation


                                       By:                  *
                                            ---------------------------------


* By:  /s/ William A. Frewin, Jr.
       --------------------------
              William A. Frewin, Jr.
              Attorney-in-Fact


                                  Page 11 of 18
<PAGE>   12


                                                                       Exhibit A

       Each of Edward C. Atwood, Kathleen Margaret Dolan, Marianne Dolan Weber
and Deborah Dolan-Sweeney is currently a trustee (a "Trustee" and together, the
"Trustees") for each of the trusts listed in the table below (the "Trusts"),
which own in the aggregate, either directly or through their membership
interests in Dolan Family LLC, 5,071,280 shares of Class B Common Stock, par
value $.01 per share, of the Issuer (the "Class B Common Stock"). Class B Common
Stock is convertible at the option of the holder thereof, share for share into
Class A Common Stock, par value $.01 per share, of the Issuer (the "Class A
Common Stock"). As a Trustee of the Trusts, each of the Trustees has the shared
power to vote and dispose of all shares held by the Trusts and Dolan Family LLC.
Under certain rules of the Securities and Exchange Commission, so long as the
Trustees retain such powers, they are deemed to have beneficial ownership
thereof for purposes of Schedule 13G reporting.

       The following table lists each Trust's name and the name of its
beneficiary or description of its beneficiary class.

<TABLE>
<CAPTION>
Name of Trust                               Beneficiary
- -------------                               -----------

<S>                                        <C>
Dolan Descendants Trust                     All descendants of Charles F. Dolan living at
                                            any time and from time to time.

Dolan Progeny Trust                         All children of Charles F. Dolan living at any
                                            time and from time to time.

Dolan Grandchildren Trust                   All children and grandchildren of Charles F.
                                            Dolan living at any time and from time to
                                            time.

Dolan Spouse Trust                          All descendants of Charles F. Dolan living at
                                            any time and from time to time and their
                                            spouses.
</TABLE>

       Pursuant to the provisions of the agreements governing the Trusts, the
economic interest in the shares of the Issuer owned by each Trust is held by
such Trust's beneficiary class. For each Trust, distributions of income and
principal can be made in the discretion of the non-beneficiary Trustee, (in each
case, Edward C. Atwood), to any one or more of the members of such Trust's
beneficiary class.


                                  Page 12 of 18
<PAGE>   13

       Each of Kathleen Margaret Dolan, Marianne Dolan Weber and Deborah
Dolan-Sweeney (each a "Current Beneficiary") is a beneficiary of, respectively,
the DC Kathleen Trust, the DC Marianne Trust and the DC Deborah Trust (together,
the "DC Trusts"), which own in the aggregate 3,602,068 shares of Class B Common
Stock. For each of the DC Trusts, distributions of income and principal can be
made in the discretion of the non-beneficiary trustee, to the Current
Beneficiary. The Current Beneficiary has the power during her life to appoint
all or part of her DC Trust to or for the benefit of one or more of her
descendants.

       The following table lists each DC Trust's name and the name of its
beneficiary.

<TABLE>
<CAPTION>
Name of Trust                      Beneficiary
- -------------                      -----------

<S>                                <C>
DC Kathleen Trust                  Kathleen Margaret Dolan

DC Marianne Trust                  Marianne Dolan Weber

DC Deborah Trust                   Deborah Dolan-Sweeney
</TABLE>

       Beneficiaries of any DC Trust can be said to have only a contingent
economic interest in the securities of the Issuer held by such DC Trust because
the non-beneficiary trustee thereof has the sole discretion to distribute or
accumulate the income from each DC Trust and the sole discretion to distribute
the principal of each DC Trust to the beneficiary of such DC Trust.

       Dolan Family LLC has entered into a financing arrangement with an
unaffiliated third party whereby such third party has the right to receive
distributions as a secured party on certain shares of Class B Common Stock held
by Dolan Family LLC. Such shares do not represent, in the aggregate, more than
5% of the Class A Common Stock.


                                  Page 13 of 18
<PAGE>   14


                                                                       Exhibit B

                     Identification of Members of the Group

DOLAN FAMILY LLC

EDWARD C. ATWOOD, as Manager of Dolan Family LLC and Trustee for Dolan
Descendants Trust, Dolan Progeny Trust, Dolan Grandchildren Trust and Dolan
Spouse Trust

KATHLEEN M. DOLAN, individually and as Trustee for Dolan Descendants Trust,
Dolan Progeny Trust, Dolan Grandchildren Trust, Dolan Spouse Trust and DC
Kathleen Trust, and as Director of Dolan Children's Foundation

MARIANNE DOLAN WEBER, individually and as Trustee for Dolan Descendants Trust,
Dolan Progeny Trust, Dolan Grandchildren Trust, Dolan Spouse Trust and DC
Marianne Trust, and as Director of Dolan Children's Foundation

DEBORAH DOLAN-SWEENEY, individually and as Trusteee for Dolan Descendants
Trust, Dolan Progeny Trust, Dolan Grandchildren Trust, Dolan Spouse Trust and
DC Marianne Trust, and as Director of Dolan Children's Foundation


                                  Page 14 of 18
<PAGE>   15


                                                                       Exhibit C

                                Power of Attorney

              The undersigned hereby constitutes and appoints William A Frewin,
Jr. with full power of substitution and resubstitution, as his true and lawful
attorney-in-fact to:

       (1)    execute and deliver for and on behalf of the undersigned (i) any
              and all Forms 3, 4 and 5 relating to Cablevision Systems
              Corporation (the "Company") and required to be filed in accordance
              with Section 16(a) of the Securities Exchange Act of 1934, as
              amended (the "Exchange Act") and the rule thereunder and (ii) any
              and all schedules relating to the Company required to be filed in
              accordance with Section 13(d) of the Exchange Act and the rules
              thereunder (together, the "Forms and Schedules"), in the
              undersigned's capacity as a trustee of the Dolan Descendants
              Trust, the Dolan Progeny Trust, the Dolan Grandchildren Trust and
              the Dolan Spouse Trust and as Manager of Dolan Family LLC, a
              Delaware limited liability company, and in and all other
              capacities pursuant to which such Forms and Schedules may be
              required to be filed by the undersigned;

       (2)    do and perform any and all acts and on behalf of the undersigned
              which may be necessary or desirable to complete and execute any
              such Forms and timely file such Forms and Schedules with the
              United States Securities and Exchange Commission and any stock
              exchange or similar authority; and

       (3)    take any other action of any type whatsoever in connection with
              the foregoing which, in the opinion of such attorney-in-fact, may
              be of benefit to, in the best interest of, or legally required by,
              the undersigned, it being understood that the documents executed
              by such attorney-in-fact on behalf of the undersigned pursuant to
              this Power of Attorney shall be in such form and shall contain
              such terms and conditions as such attorney-in-fact may approve in
              such attorney-in-fact's discretion.

              The undersigned hereby grants to such attorney-in-fact and agents
full power and authority to do and perform any and every act and thing
whatsoever requisite, necessary or proper to be done in the exercise of any of
the rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power of
substitution of revocation, hereby ratifying and confirming all that such
attorney-in-fact and agent, or his substitute or substitutes, shall lawfully do
or cause to be done by virtue of this Power of Attorney and the rights and
powers herein grants. The undersigned acknowledges that the foregoing
attorney-in-fact and agent, in servicing in such capacity at the request of the
undersigned, is not assuming any of the undersigned's responsibilities to comply
with Section 16 or Section 13(d) of the Exchange Act. This Power of


                                  Page 15 of 18
<PAGE>   16

Attorney shall remain in full force and effect until the undersigned is no
longer required to file the Forms and Schedules with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact and agents.

              IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of the 10th day of November, 1999.


                                       /s/ Edward C. Atwood
                                       ----------------------------
                                       Edward C. Atwood


                              CONFIRMING STATEMENT

              This Statement confirms that Edward Atwood has authorized and
designated William A. Frewin, Jr. to execute and file on his behalf all the
Forms and Schedules (including any amendments thereto) that he may be required
to file with the United States Securities and Exchange Commission as a result of
the undersigned's direct or indirect ownership of or transactions in securities
of Cablevision Systems Corporation. The authority of William A. Frewin, Jr.
under this Statement shall continue until the undersigned is no longer required
to file the Forms and Schedules with respect to the undersigned's holdings of
and transactions in securities issued by Cablevision Systems Corporation, unless
earlier revoked by the undersigned in a signed writing. The undersigned
acknowledges that William A. Frewin, Jr. is not assuming any of the
undersigned's responsibilities to comply with Section 16 or Section 13(d) of the
Securities Exchange Act of 1934, as amended.


                                    /s/ Edward C. Atwood
                                    --------------------
                                    Edward C. Atwood


                                  Page 16 of 18
<PAGE>   17


                                                                       Exhibit D

                             JOINT FILING AGREEMENT

       Pursuant to Rule 13d-1(k)(1) promulgated under the Securities Exchange
Act of 1934, as amended, the undersigned agree that the Statement on Schedule
13G to which this exhibit is attached is filed on behalf of each of them in the
capacities set forth below.

Dated:  November 15, 1999

                                       Dolan Family LLC

                                       By:   Edward C. Atwood,
                                             Manager

                                       By:                 *
                                             --------------------------------


                                       Edward C. Atwood,
                                       as Trustee for Dolan Descendants Trust,
                                       Dolan Progeny Trust, Dolan
                                       Grandchildren Trust and Dolan Spouse
                                       Trust

                                       By:                 *
                                             --------------------------------


                                       Kathleen M. Dolan,
                                       individually and as Trustee for Dolan
                                       Descendants Trust, Dolan Progeny Trust,
                                       Dolan Grandchildren Trust, Dolan Spouse
                                       Trust, DC Kathleen Trust, and as
                                       Director of  Dolan Children's Foundation

                                       By:                 *
                                             --------------------------------


                                  Page 17 of 18
<PAGE>   18


                                       Marianne Dolan Weber
                                       individually and as Trustee for Dolan
                                       Descendants Trust, Dolan Progeny Trust,
                                       Dolan Grandchildren Trust, Dolan Spouse
                                       Trust, DC Marianne Trust, and as
                                       Director of  Dolan Children's Foundation

                                       By:                 *
                                             --------------------------------


                                       Deborah Dolan Sweeney
                                       individually and as Trustee for Dolan
                                       Descendants Trust, Dolan Progeny Trust,
                                       Dolan Grandchildren Trust, Dolan Spouse
                                       Trust, DC Deborah Trust, and as Director
                                       of  Dolan Children's Foundation

                                       By:                 *
                                             --------------------------------


* By:  /s/ William A. Frewin, Jr.
       --------------------------
              William A. Frewin, Jr.
              Attorney-in-Fact


                                  Page 18 of 18



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