Knight Transportation Inc - Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Expires: February 28, 2011 Estimated average burden hours per response... 0.5
	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(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Ramsey William

2. Date of Event Requiring Statement (MM/DD/YYYY) 5/22/2008

3. Issuer Name and Ticker or Trading Symbol

KNIGHT TRANSPORTATION INC [KNX]

(Last) (First) (Middle)

5601 WEST BUCKEYE ROAD

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

_____ Director _____ 10% Owner
___ X ___ Officer (give title below) _____ Other (specify below)
Senior Vice President /

(Street)

PHOENIX, AZ 85043

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

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 Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	0	D

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	6/6/2008 ⁽¹⁾	10/12/2010	Common Stock	1688	$2.85 ⁽¹⁾	D
Common Stock, par value $0.01 per share	6/6/2008 ⁽²⁾	9/17/2011	Common Stock	2250	$4.89 ⁽²⁾	D
Common Stock, par value $0.01 per share	6/6/2008 ⁽³⁾	6/4/2012	Common Stock	1650	$8.44 ⁽³⁾	D
Common Stock, par value $0.01 per share	6/6/2008 ⁽⁴⁾	8/6/2013	Common Stock	2813	$11.44 ⁽⁴⁾	D
Common Stock, par value $0.01 per share	6/6/2008 ⁽⁵⁾	3/18/2014	Common Stock	3938	$10.54 ⁽⁵⁾	D
Common Stock, par value $0.01 per share	4/26/2008 ⁽⁶⁾	4/25/2015	Common Stock	4125	$14.48 ⁽⁶⁾	D
Common Stock, par value $0.01 per share	5/18/2009 ⁽⁷⁾	5/17/2016	Common Stock	4000	$18.75 ⁽⁷⁾	D
Common Stock, par value $0.01 per share	5/19/2009 ⁽⁸⁾	5/18/2016	Common Stock	1000	$18.77 ⁽⁸⁾	D
Common Stock, par value $0.01 per share	5/25/2010 ⁽⁹⁾	5/24/2017	Common Stock	5500	$18.20 ⁽⁹⁾	D
Common Stock, par value $0.01 per share	2/28/2011 ⁽¹⁰⁾	2/27/2018	Common Stock	10000	$14.79 ⁽¹⁰⁾	D
Common Stock, par value $0.01 per share	5/22/2011 ⁽¹¹⁾	5/21/2018	Common Stock	7500	$17.29 ⁽¹¹⁾	D

Explanation of Responses:
( 1)	Mr. Ramsey was granted an option to purchase 5,063 shares of stock at the grant price of $2.85 per share on October 13, 2000 of which 3,375 have been exercised and 1,688 are vested and exercisable.
( 2)	Mr. Ramsey was granted an option to purchase 3,375 shares of stock at the grant price of $4.8889 per share on September 18, 2001 of which 1,125 have been exercised and 2,250 are vested and exercisable.
( 3)	Mr. Ramsey was granted an option to purchase 2,475 shares of stock at the grant price of $8.4445 per share on June 5, 2002 of which 825 have been exercised and 1,650 are vested and exercisable.
( 4)	Mr. Ramsey was granted an option to purchase 2,813 shares of stock at the grant price of $11.4356 per share on August 7, 2003 of which 1,125 are currently vested and the remaining shares shall vest as follows: 562 shares on August 7, 2008 and 563 shares each on August 7, 2009 and 2010.
( 5)	Mr. Ramsey was granted an option to purchase 3,938 shares of stock at the grant price of $10.5378 per share on March 19, 2004 of which 1,575 are currently vested and the remaining shares shall vest as follows: 787 shares on March 19, 2009 and 788 shares each on March 19, 2010 and March 19, 2011.
( 6)	Mr. Ramsey was granted an option to purchase 4,125 shares of stock at the grant price of $14.48 per share on April 26, 2005 of which 825 are currently vested and the remaining shares shall vest as follows: 825 shares annually beginning on April 26, 2009, until fully vested.
( 7)	Mr. Ramsey was granted an option to purchase 4,000 shares of stock at the grant price of $18.75 per share on May 18, 2006, to vest as follows: 800 shares annually beginning on May 18, 2009, until fully vested.
( 8)	Mr. Ramsey was granted an option to purchase 1,000 shares of stock at the grant price of $18.77 per share on May 19, 2006, to vest as follows: 200 shares annually beginning on May 19, 2009, until fully vested.
( 9)	Mr. Ramsey was granted an option to purchase 5,500 shares of stock at the grant price of $18.20 per share on May 25, 2007, to vest as follows: 1,100 shares annually beginning on May 25, 2010, until fully vested.
( 10)	Mr. Ramsey was granted an option to purchase 10,000 shares of stock at the grant price of $14.79 per share on February 29, 2008, to vest as follows: 2,000 shares annually beginning on February 28, 2010, until fully vested.
( 11)	Mr. Ramsey was granted an option to purchase 7,500 shares at the grant price of $17.29 per share to vest as follows: 20% each year beginning on May 22, 2011, until fully vested.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Ramsey William 5601 WEST BUCKEYE ROAD PHOENIX, AZ 85043			Senior Vice President

Signatures
/S/ William Ramsey		6/6/2008
^** 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 5(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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