STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
FORM 4
1. Name and Address of Reporting Person:
Ernest Clarke
C/O Ultradata Systems, Inc.
9375 Dielman Industrial Dr.
St. Louis, MO 63132
2. Issuer Name and Ticker Trading Symbol:
Ultradata Systems, Inc. - ULTR
3. IRS or Social Security Number of Reporting Person:
###-##-####
4. Statement for Month/Year:
April, 1998
5. If Amendment, Date of Original (Month/Year):
N/A
6. Relationship of Reporting Person to Issuer:
(Check all applicable)
X Director 10% Owner
X Officer: (Vice President) Other
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially
Owned
Title Trans- Trans- Securities Amount of Ownership Nature of
of action action Acquired (A) Securities Form: Indirect
Security Date Code Disposed of(D) Beneficially Direct(D) Benefic-
Owned at Indirect(I) ial
Amount Code Price End of Month Owners-
ship
N/A
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
( e.g. puts, calls, warrants, options, convertible securities)
(1) (2) (3) (4) (5) (6)
Title of Conversion Trans- Trans- Number of Date Exer-
Derivative or action action Derivative cisable and
Security Price of Date Code Securities Expiration
Derivative Acquired (A) Date
Security Disposed (D)
Incentive Immediate
Stock Option $5.75 04/01/98 M 5,000 (D) 12/24/02
Incentive Immediate
Stock Option $5.50 04/01/98 M 16,500 (D) 08/01/02
Incentive Immediate
Stock Option $5.00 04/01/98 M 3,000 (D) 01/02/00
Incentive Immediate
Stock Option $4.00 04/01/98 A 21,500 (A) 03/31/03
Table II Cont'd:
(7) (8) (9) (10) (11)
Title and Amount Price of Number of Ownership Nature of
of Underlying Derivative Derivative Form of Indirect
Security Security Securities Derivative Beneficial
Beneficially Security Ownership
Owned at End Direct (D)
of Month or Indirect (I)
Common Stock N/A 24,500 (D) N/A
Signed: Ernest Clarke
Vice President - Government Contracts
April 1, 1998
