<PAGE>
+--------+
| FORM 3 | U.S. 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,
Section 17(a) of the Public Utility Holding Company Act of 1935 or
Section 30(f) of the Investment Company Act of 1940
(Print or Type Responses)
- --------------------------------------------------------------------------------
1. Name and Address of Reporting Person*
Reifenheiser Thomas V.
----------------------------------------------------------------------------
(Last) (First) (Middle)
c/o Chase Securities Inc., 270 Park Avenue
----------------------------------------------------------------------------
(Street)
New York New York 10017
----------------------------------------------------------------------------
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year) 2/9/00
--------------
3. IRS Identification Number of Reporting Person if an Entity
(Voluntary)
--------------
4. Issuer Name and Ticker or Trading Symbol Mediacom Communications
Corporation
MCCC
-----------------------------------
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)
_X_ Director ___ Officer ___ 10% Owner ___ Other
(give title below) (specify below)
----------------------------------------------------------------------------
6. If Amendment, Date of Original (Month/Day/Year)
----------------------------
7. 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
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
1. Title 2. Amount of 3. Ownership Form: 4. Nature of
of Securities Bene- Direct (D) or Indirect Bene-
Security ficially Owned Indirect (I) ficial Ownership
(Instr. 4) (Instr. 4) (Instr. 5) (Instr. 5)
- --------------------------------------------------------------------------------
<S> <C> <C> <C>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
</TABLE>
TABLE II--DERIVATIVE SECURITIES BENEFICIALLY OWNED
(e.g., puts, calls, warrants, options, convertible securities)
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
1. Title of Derivative 2. Date Exer- 3. Title and Amount of Securities 4. Conversion 5. Ownership 6. Nature of In-
Security (Instr. 4) cisable and Underlying Derivative Security or Form of direct Bene-
Expiration (Instr. 4) Exercise Derivative ficial
Date Price Security: Ownership
(Month/Day/ of Direct (D) (Instr. 5)
Year) Derivative or In-
---------------------------------------------------- Security direct (I)
Date Expira- Amount or (Instr. 5)
Exer- tion Title Number of
cisable Date Shares
- ------------------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C> <C>
Stock Options (1) 2/3/10 Class A 20,000 $19.00 D
- ------------------------------------------------------------------------------------------------------------------------------------
Common Stock
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
Reminder: Report on a separate line for each class of securities beneficially
owned directly or indirectly.
Explanation of Responses:
(1) The Reporting Person has been granted an option to purchase 20,000 shares
of Class A Common Stock. The option becomes exercisable in three equal
annual installments beginning February 3, 2001.
/s/ Thomas V. Reifenheiser 2/22/00
------------------------------- -----------------
**Signature of Reporting Person Date
* If the form is filed by more than one reported 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).
Note: File three copies of this Form, one of which must be manually signed.
If space is insufficient, See Instruction 6 for procedure.
