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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549



                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(d) of the
                        SECURITIES EXCHANGE ACT OF 1934



          Date of Report (Date of earliest event reported): May 26, 1999

                               COMCAST CORPORATION
             -------------------------------------------------------
             (Exact name of registrant as specified in its charter)

         PENNSYLVANIA                000-06983                 23-1709202
- ----------------------------        ------------            -------------------
(State or other jurisdiction        (Commission               (IRS employer
   of incorporation)                file number)            identification no.)

             1500 Market Street, Philadelphia, PA          19102-2148
           ----------------------------------------------------------
             (Address of principal executive offices)     (Zip Code)

       Registrant's telephone number, including area code: (215) 665-1700
                                                           --------------

ITEM 5. OTHER EVENTS On May 26, 1999, Comcast Corporation, a Pennsylvania corporation ("Comcast"), and Jones Intercable, Inc., a Colorado corporation and an indirect controlled subsidiary of Comcast ("Jones") announced agreements (the "Agreements") to swap certain cable systems with Adelphia Communications, a Delaware corporation. A press release announcing the Agreements was issued by Comcast and Jones on May 26, 1999. The information contained in the press release is incorporated herein by reference. The press release is attached hereto as Exhibit 99.1. ITEM 7(c). EXHIBITS 99.1 Press Release dated May 26, 1999.

SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. COMCAST CORPORATION Dated: May 27, 1999 By: /s/ Joseph J. Euteneuer --------------------------------------- Joseph J. Euteneuer Vice President and Corporate Controller 2

                                                             COMCAST CORPORATION

NEWS RELEASE

- -------------------------------------------------------------------------------
Contact:
John R. Alchin, Senior Vice President and Treasurer    (215) 981-7503
William E. Dordelman, Vice President, Finance          (215) 981-7550
Marlene S. Dooner, Senior Director, Investor Relations (215) 981-7392

FOR IMMEDIATE RELEASE


            COMCAST CORPORATION AND JONES INTERCABLE ANNOUNCE CABLE
                   SYSTEM SWAPS WITH ADELPHIA COMMUNICATIONS


Philadelphia, PA -- May 26, 1999: Comcast Corporation and Jones Intercable, Inc.
announced  today   agreements  to  swap  certain  cable  systems  with  Adelphia
Communications.  These cable system swaps will continue to strengthen  Comcast's
Mid-Atlantic  super-cluster,  encompassing cable systems in New Jersey,  eastern
Pennsylvania,  Maryland,  Delaware,  Washington  DC and  Virginia.  These system
swaps,  together  with other  pending  acquisitions  and  investments  will make
Comcast's Mid-Atlantic super-cluster one of the largest cable system clusters in
the nation with  interests  in more than four  million  owned and managed  cable
subscribers.  In addition, they will enhance Comcast's and Jones' cable clusters
in the  Midwest,  in Michigan  and  Indiana,  and also in West  Florida.  In the
aggregate,   these  swaps  will  add  approximately  464,000  cable  subscribers
currently held by Adelphia to Comcast and Jones markets.  In exchange,  Adelphia
will receive  current Comcast and Jones systems  serving  approximately  440,000
subscribers  in the greater Los Angeles area as well as in Palm Beach,  Florida.
All systems involved in the  transactions  will be valued based upon independent
appraisals  with any  difference  in  relative  value to be funded  with cash or
additional cable systems.  The system swaps are subject to customary closing and
regulatory approvals and are expected to close by mid-2000.

Comcast Corporation (www.comcast.com) is principally engaged in the development,
management  and  operation of broadband  cable  networks and in the provision of
content  through  principal  ownership  of QVC,  Comcast-Spectacor  and  Comcast
SportsNet,  a controlling  interest in E!  Entertainment  Television and through
other programming investments.

Comcast's  Class A Special  Common  Stock and Class A Common Stock are traded on
The Nasdaq Stock Market under the symbols CMCSK and CMCSA, respectively.

Jones Intercable, Inc. (www.jic.com) is principally involved in the development,
management  and  operation of  broadband  cable  networks  serving more than 1.0
million  customers.   On  April  7,  1999,  Comcast  Corporation  completed  the
acquisition  of a controlling  interest in Jones  Intercable,  Inc. As a result,
Jones  Intercable is now a  consolidated  public  company  subsidiary of Comcast
Cable  Communications,  Inc.,  an indirect  consolidated  subsidiary  of Comcast
Corporation.

Jones  Intercable's  Common  Stock  and Class A Common  Stock are  traded on The
Nasdaq Stock Market under the symbols JOIN and JOINA, respectively.

                                      ####