SEC FORM 3

SEC FORM 3SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Walters William Lance

(Last)

(First)

(Middle)

777 - 106TH AVE. N.E.

(Street)

BELLEVUE

WASHINGTON

98004

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2026

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

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

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

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

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	26,140.429	I	By PACCAR Savings Investment Plan (SIP)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Option	01/01/2022	02/06/2029	Common Stock	3,000	$43.7067	D
Stock Option	01/01/2023	02/04/2030	Common Stock	4,575	$50.7867	D
Stock Option	01/01/2024	02/02/2031	Common Stock	4,137	$61.26	D
Stock Option	01/01/2025	02/07/2032	Common Stock	4,143	$62.8667	D
Stock Option	01/01/2026	02/08/2033	Common Stock	4,172	$71.95	D
Stock Option	01/01/2027	02/05/2034	Common Stock	4,468	$104.16	D
Stock Option	01/01/2028	02/03/2035	Common Stock	4,244	$109.13	D
Stock Option	01/01/2029	02/06/2036	Common Stock	4,728	$127.35	D
Stock Units (DCP)	⁽¹⁾	⁽¹⁾	Common Stock	2,663.766	⁽¹⁾	D

Explanation of Responses:

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

	Michael R. Beers, by Power of Attorney	04/08/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)