SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) 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).

1. Name and Address of Reporting Person^*

ALLRED ALAN K

(Last)

(First)

(Middle)

180 EAST 100 SOUTH, P.O. BOX 45433

(Street)

SALT LAKE CITY

84145-0433

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
QUESTAR CORP [ STR ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
04/21/2006

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock and attached Common Stock Purchase Rights	04/21/2006		M		163	A	$19.125	29,589	D
Common Stock and attached Common Stock Purchase Rights	04/21/2006		M		1,489	A	$21.375	31,078	D
Common Stock and attached Common Stock Purchase Rights	04/21/2006		M		2,602	A	$17	33,680	D
Common Stock and attached Common Stock Purchase Rights	04/21/2006		M		5,950	A	$15	39,630	D
Common Stock and attached Common Stock Purchase Rights	04/21/2006		S		10,204⁽¹⁾	D	$77	29,426	D
Common Stock and attached Common Stock Purchase Rights								22,254.865	I	Employee Investment Plan

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. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option	$19.125	04/21/2006		M			163	08/11/1997	02/11/2007	Common Stock and attached Common Stock Purchase Rights	163	$19.125	6,837	D
Stock Option	$21.375	04/21/2006		M			1,489	08/10/1998	02/10/2008	Common Stock and attached Common Stock Purchase Rights	1,489	$21.375	6,511	D
Stock Option	$17	04/21/2006		M			2,602	08/09/1999	02/09/2009	Common Stock and attached Common Stock Purchase Rights	2,602	$17	5,398	D
Stock Option	$15	04/21/2006		M			5,950	08/08/2000	02/08/2010	Common Stock and attached Common Stock Purchase Rights	5,950	$15	9,050	D
Phantom Stock Units	$0.00							⁽²⁾	⁽²⁾	Phantom Stock Units	0		1,295.7388⁽³⁾	D
Stock Option	$28.01							08/13/2001	02/13/2011	Common Stock and attached Common Stock Purchase Rights	18,000		18,000	D
Stock Option	$22.95							08/11/2002	02/11/2012	Common Stock and attached Common Stock Purchase Rights	22,000		22,000	D
Stock Option	$27.11							08/11/2003	02/11/2013	Common Stock and attached Common Stock Purchase Rights	52,500		52,500	D

Explanation of Responses:

1. These shares were sold pursuant to a Rule 10b5-1 plan entered into on 3/3/2006 and that was disclosed by my Form 144 filed on 4/21/2006.

2. Phantom stock units will be converted to cash beginning at retirement; my retirement date is unknown.

3. I also receive phantom stock units as a result of my participation in an excess benefit plan. I have 1,248.2470 shares in it in addition to my shares in a deferred compensation plan. I also receive dividends.

Remarks:

	Abigail L. Jones Attorney in Fact for A.K. Allred	04/24/2006
	** Signature of Reporting Person	Date
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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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