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^*

PLIMPTON THOMAS E

(Last)

(First)

(Middle)

777 106TH AVENUE NE

(Street)

BELLEVUE

98004

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
PACCAR INC [ PCAR ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
09/07/2010

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								49,691	D
COMMON STOCK (SIP)⁽¹⁾								45,544.281	D

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⁽²⁾	$13.96							01/01/2006	01/15/2013	COMMON STOCK	14,128		14,128	D
STOCK OPTION⁽²⁾	$25.31							01/01/2007	01/15/2014	COMMON STOCK	55,255		55,255	D
STOCK OPTION⁽²⁾	$32.11							01/01/2008	01/20/2015	COMMON STOCK	63,990		63,990	D
STOCK OPTION⁽²⁾	$32.23							01/01/2009	01/26/2016	COMMON STOCK	60,354		60,354	D
STOCK OPTION⁽²⁾	$44.56							01/01/2010	01/31/2017	COMMON STOCK	46,635		46,635	D
STOCK OPTION⁽²⁾	$45.74							01/01/2011	01/30/2018	COMMON STOCK	41,636		41,636	D
STOCK OPTION⁽²⁾	$30.81							01/01/2012	01/31/2019	COMMON STOCK	83,030		83,030	D
STOCK OPTION⁽²⁾	$36.12							01/01/2013	02/02/2020	COMMON STOCK	79,700		79,700	D
COMMON STOCK (LTIP)⁽³⁾	⁽³⁾	09/07/2010		J⁽⁴⁾		15.58		⁽³⁾	⁽³⁾	COMMON STOCK	15.58	$44.23	7,673.89	D
COMMON STOCK (DICP)⁽⁵⁾	⁽⁵⁾	09/07/2010		J⁽⁶⁾		8.75		⁽⁵⁾	⁽⁵⁾	COMMON STOCK	8.75	$44.23	4,307.94	D

Explanation of Responses:

1. Shares held in PACCAR Savings Investment Plan (SIP).

2. Option to buy awarded under PACCAR Long Term Incentive Plan (LTIP).

3. Share units held in deferred phantom stock account under LTIP convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions.

4. Dividend on share units held in deferred phantom stock account under LTIP reinvested pursuant to LTIP.

5. Share units held in deferred phantom stock account under PACCAR Deferred Incentive Compensation Plan (DICP) convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions.

6. Dividend on share units held in deferred phantom stock account under DICP reinvested pursuant to DICP.

Remarks:

	Thomas E. Plimpton	09/09/2010
	** 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).
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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