Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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
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(Print or Type Responses)
1. Name and Address of Reporting Person *
ARMSTRONG RONALD E
  2. Issuer Name and Ticker or Trading Symbol
PACCAR INC [PCAR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President
(Last)
(First)
(Middle)
777 106TH AVENUE NE
3. Date of Earliest Transaction (Month/Day/Year)
07/26/2013
(Street)

BELLEVUE, WA 98004
4. If Amendment, Date 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
(City)
(State)
(Zip)
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)
Code V Amount (A) or (D) Price
COMMON STOCK 07/26/2013   M   12,790 A $ 25.31 55,428 D  
COMMON STOCK 07/26/2013   S   12,790 D $ 55.7754 42,638 D  
COMMON STOCK (SIP) (1)               17,201.868 D  

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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 Underlying Securities
(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 of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
STOCK OPTION (2) $ 25.31 07/26/2013   M     12,790 01/01/2007 01/15/2014 COMMON STOCK 12,790 (2) 0 D  
STOCK OPTION (2) $ 32.11             01/01/2008 01/20/2015 COMMON STOCK 12,046   12,046 D  
STOCK OPTION (2) $ 32.23             01/01/2009 01/26/2016 COMMON STOCK 13,675   13,675 D  
STOCK OPTION (2) $ 44.56             01/01/2010 01/31/2017 COMMON STOCK 13,704   13,704 D  
STOCK OPTION (2) $ 45.74             01/01/2011 01/30/2018 COMMON STOCK 15,188   15,188 D  
STOCK OPTION (2) $ 30.81             01/01/2012 01/30/2019 COMMON STOCK 28,024   28,024 D  
STOCK OPTION (2) $ 36.12             01/01/2013 02/02/2020 COMMON STOCK 21,758   21,758 D  
STOCK OPTION (2) $ 50.5             01/01/2014 02/03/2021 COMMON STOCK 31,380   31,380 D  
STOCK OPTION (2) $ 43.24             01/01/2015 02/02/2022 COMMON STOCK 49,102   49,102 D  
STOCK OPTION (2) $ 47.81             01/01/2016 02/06/2023 COMMON STOCK 43,672   43,672 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ARMSTRONG RONALD E
777 106TH AVENUE NE
BELLEVUE, WA 98004
      President  

Signatures

 Ronald E. Armstrong   07/29/2013
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Shares held in PACCAR Savings Investment Plan (SIP).
(2) Option to buy awarded under PACCAR Long Term Incentive Plan.

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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