FORM 4

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

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Check this box if no longer
subject to Section 16. Form 4 or
Form 5 obligations may continue.
See Instruction 1(b).

(Print or Type Responses)

1. Name and Address of Reporting Person*          

Cash, R. D. 

 Questar Corporation - STR

6. Relationship of Reporting Person(s) to Issuer
                  (Check all applicable)

 X

Director

10% Owner

 X

Officer (give
title below)

Other (specify
below)

 Chairman of the Board

 180 East 100 South, P.O. Box 45433

January 7, 2003 

7. Individual or Joint/Group Filing (Check Applicable Line)

Form filed by One Reporting Person

 Salt Lake City, Utah 84145-0433

Form filed by More than One Reporting Person

(City)                      (State)                  (Zip)

Table I   Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1. Title of Security
   (Instr. 3)

2. Trans-
    action
    Date

  (Month/
   Day/
   Year)

2A.
Deemed
Execution
Date, if
any
  (Month/
   Day/
   Year)

3. Trans-
    action
    Code
    (Instr.8)

4. Securities Acquired (A)
    or Disposed of (D)
    (Instr. 3, 4 and 5)

5. Amount of
    Securities
    Beneficially
    Owned
    Following
    Reported
    Transaction(s)

    (Instr. 3 and 4)

6. Owner-
    ship
    Form:
    Direct
    (D) or
    Indirect
    (I)

 (Instr. 4)

7. Nature of
    Indirect
    Beneficial
    Owner-
    ship



   (Instr. 4)

Code

V

Amount

(A)
or
(D)

Price

Common Stock (and attached Common Stock Purchase Rights) 

12-24-2002

G

V

4,033

D

$28.20

Common Stock (and attached Common Stock Purchase Rights) 

01-06-2003

G

V

781

D

$28.10

Common Stock (and attached Common Stock Purchase Rights) 

01-07-2003

M

7,430

A

$19.125

Common Stock (and attached Common Stock Purchase Rights) 

01-07-2003

F

4,942 + 1,024

D

$28.75

229,776

D

Common Stock (and attached Common Stock Purchase Rights) 

82,515.3958 ¹

I

Through Trust Benefit Plan

Common Stock (and attached Common Stock Purchase Rights) 

12-24-2002

G

V

4,033

A

$28.20

30,433

D

Private Foundation

Common Stock (and attached Common Stock Purchase Rights) 

01-06-2003

G

V

781

A

$28.10

6,933

D

Family

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

*

If the form is filed by more than one reporting person, see Instruction 4(b)(v).

Persons who respond to the collection of information contained
in this form are not required to respond unless the form displays
a currently valid OMB control number.

SEC 1474 (9-02)

FORM 4 (continued)

Table II   Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative
    Security
    (Instr. 3)

2. Conver-
    sion or
    Exercise
    Price of
    Deri-
    vative
   Security

(Month/
Day/
Year)

  (Month/
   Day/
   Year)

4. Trans-
    action
    Code
    (Instr.8)

5. Number of Deriv-
    ative Securities Ac-
    quired (A) or Dis-
    posed of (D)
    (Instr. 3, 4 and 5)

6. Date Exer-
    cisable and
    Expiration
    Date
    (Month/Day/
    Year)

7. Title and Amount of
    Underlying Securities
    (Instr. 3 and 4)

8. Price
    of
    Deriv-
    ative
    Secur-
    ity
    (Instr.
    5)

9. Number
   of deriv-
   ative
   Secur-
   ities
   Bene-
   ficially
   Owned
   Follow-
   ing
   Reported
   Trans-
   action(s)
   (Instr. 4)

10. Owner-
     ship
     Form of
     Deri-
     vative
     Security:
     Direct
     (D) or
     Indirect
     (I)
     (Instr. 4)

11. Nature
     of
     Indirect
     Benefi-
     cial
     Owner-
     ship
     (Instr. 4)

Code

V

(A)

(D)

Date
Exer-
cisable

Expira-
tion
Date

Title

Amount or
Number of
Shares

Stock Option

$19.125

01-07-2003

M

7,430

8-11-1997
8-11-1998
8-11-1999
8-11-2000

4-30-2005

Common Stock (and attached Common Stock Purchase Rights)

7,430

885,626 ²

 D

Phantom Stock Units

1-1

59,176.5386 ^{3, 4}

 D

Explanation of Responses:

1

These equivalent shares are allocated to my account in Questar's Employee Investment Plan as of December 31, 2002.

2

Detailed information concerning my options has been previously disclosed.

3

I have account balances in several different deferred compensation plans. Although I don't earn fees as a director or compensation as an employee, my account balances in such plans are credited with dividends on a quarterly basis.

4

Prior to my retirement, I received phantom stock units as a result of my participation in an excess benefit plan sponsored by Questar. Although I no longer earn compensation, my account balance is credited with dividends. This total includes the 47,579.0417 phantom stock units in such plan in addition to the phantom stock units held through account balances in deferred compensation plans.

/s/ Connie C. Holbrook

January 9, 2003

**

Intentional misstatements or omissions of facts constitute Federal Criminal Violations.

Connie C. Holbrook as Attorney in Fact
for R. D. Cash

Date

See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

**Signature of Reporting Person

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient,
          see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not
required to respond unless the form displays a currently valid OMB Number.