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 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Quast Kevin	2. Date of Event Requiring Statement (MM/DD/YYYY) 9/8/2017	3. Issuer Name and Ticker or Trading Symbol Knight-Swift Transportation Holdings Inc. [KNX]
(Last)        (First)        (Middle) 20002 NORTH 19TH AVENUE	4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                            _____ 10% Owner ___ X ___ Officer (give title below)          _____ Other (specify below) EVP & COO of Knight Trans. Inc /
(Street) PHOENIX, AZ 85027        (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)
Class A Common Stock	63445	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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Performance Units	(1)	1/31/2019	Class A Common Stock	4183   (1)	$0	D
Restricted Stock Performance Units	(1)	1/31/2020	Class A Common Stock	6190   (1)	$0	D
Restricted Stock Units	(2)	(2)	Class A Common Stock	18800	$0	D
Restricted Stock Units	(3)	(3)	Class A Common Stock	2000	$0	D
Restricted Stock Units	(4)	(4)	Class A Common Stock	4498	$0	D
Employee Stock Option (Right to Buy)	(5)	2/27/2018	Class A Common Stock	10000	$14.79	D
Employee Stock Option (Right to Buy)	(6)	5/21/2018	Class A Common Stock	7500	$17.29	D

Explanation of Responses:
(1)	The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017. The shares underlying this award vested as of September 8, 2017.
(2)	This restricted stock unit grant vests on a progressive vesting schedule beginning on January 31, 2011 and ending on January 31, 2023.
(3)	This restricted stock unit grant vests in five equal annual installments beginning on January 31, 2014.
(4)	This restricted stock unit grant vests in five equal annual installments beginning on May 31, 2018.
(5)	This option vested in five equal annual installments beginning on February 28, 2011.
(6)	This option vested in five equal annual installments beginning on May 22, 2011.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Quast Kevin 20002 NORTH 19TH AVENUE PHOENIX, AZ 85027			EVP & COO of Knight Trans. Inc

Signatures
/s/ Jessica Benford, Attorney-in-Fact		9/18/2017
** 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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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