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^*

RATTIE KEITH O

(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)
	Pres.& Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/22/2007

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	03/22/2007		M		25,000	A	$27.42	126,307	D
Common Stock	03/22/2007		S		25,000	D	$90.0282	101,307⁽¹⁾	D
Common Stock								1,220.8538⁽²⁾	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	$27.42	03/22/2007		M			25,000	08/01/2001	02/01/2011	Common Stock	25,000	$27.42	50,000	D
Phantom Stock Units	$0.00							⁽³⁾	⁽³⁾	Phantom Stock Units	16,225.9668		16,225.9668⁽⁴⁾	D
Stock Option	$28.01							08/13/2001	02/13/2011	Common Stock	100,000		100,000	D
Stock Option	$22.95							08/11/2002	02/11/2012	Common Stock	140,000		140,000	D
Stock Option	$27.11							08/11/2003	02/11/2013	Common Stock	150,000		150,000	D
Stock Option	$77.14							02/01/2010	10/24/2012	Common Stock	0		0	D
Stock Option	$82.15							02/13/2009	02/13/2015	Common Stock	0		0	D

Explanation of Responses:

1. These shares were sold pursuant to a Rule 10b5-1 plan entered into on 11/9/2006, that was disclosed by my Form 144 filed on 3/22/2007.

2. As of March 21, 2007, I have 1,220.8538 equivalent shares of stock in Questar's Employee Investment Plan. The number of equivalent shares will fluctuate as Questar's stock price changes; this fluctuation does not reflect any transactions that should be reported.

3. Phantom stock units will be converted to cash per my elections on or within 5 years of my termination of employment (subject to 6-month delay if necessary to comply with IRC 409A), or upon my death or Disability.

4. I also receive phantom stock units as a result of my participation in an excess benefit plan. This total includes 16,136.0559 units in such plan, in addition to units held through my account balance in a deferred compensation plan. I also receive dividends.

Remarks:

	Abigail L. Jones Attorney in Fact for K. O. Rattie	03/26/2007
	** 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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