<PAGE>
===============================================================================
/------------------------------/
/ OMB APPROVAL /
/------------------------------/
/ OMB Number 3235-0104 /
/ Expires: February 1, 1994 /
/ Estimated average burden /
/ hours per response...... 0.5 /
/------------------------------/
+--------+
| 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
- --------------------------------------------------------------------------------
1. Name and Address of Reporting Person
Patrick Robert B
----------------------------------------------------------------------------
(Last) (First) (Middle)
7726 Old Ox Rd
----------------------------------------------------------------------------
(Street)
Fairfax Station VA 22039
----------------------------------------------------------------------------
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year) 07/29/99
--------------
3. IRS or Social Security Number of Reporting Person
(Voluntary)
--------------
4. Issuer Name and Ticker or Trading Symbol Digex Incorporated (DIGX)
-----------------------------------
5. Relationship of Reporting Person to Issuer (Check all applicable)
[ ] Director [XX] Officer [ ] 10% Owner [ ] Other
(give title below) (specify below)
VP Marketing
----------------------------------------------------------------------------
6. If Amendment, Date of Original (Month/Day/Year)
----------------------------
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>
Common Shares, $.01
par value ("Common
Stock")
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
</TABLE>
Reminder: Report on a separate line for each class of securities beneficially
owned directly or indirectly. (Over)
(Print or Type Responses) SEC 1473 (3/91)
<PAGE>
FORM 3 (continued)
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 Option (right to buy) * 7/29/09 Common Stock 50,000 $5.000 D
- ------------------------------------------------------------------------------------------------------------------------------------
Stock Option (right to buy) * 7/29/09 Common Stock 50,000 $17.000 D
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
Explanation of Responses:
* This option, granted on July 29, pursuant to the Issuer's Long Term Incentive
Plan will become exercisable, 25% after one year and then equal quarterly
installments over the next three years.
**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.
Page 2
SEC 1473 (3/91)
/s/ Robert B. Patrick 7/29/99
------------------------------- -----------------
**Signature of Reporting Person Date
Potential persons who are to respond to the collection of information contained
in this form are not requuired to respond unless the form displays a currently
valid OMB Number.
