[Form 4] PACCAR INC Insider Trading Activity

Rhea-AI Filing Summary

PACCAR INC’s chief executive officer and director reported a small automatic share increase through the company’s savings plan and updated his equity holdings. On January 7, 2026, 207.321 shares of PACCAR common stock were added at $115.30 per share, coded “J,” with a footnote stating this was a dividend on PACCAR Savings Investment Plan (SIP) shares reinvested under the SIP. After this, 17,481 common shares were held indirectly through the SIP and 244,433 shares were held directly.

The filing also lists existing derivative awards held directly: stock options on 51,165 shares at an exercise price of $62.8667, 141,038 shares at $71.95, 104,244 shares at $104.16, and 92,768 shares at $109.13, each with specified exercisable and expiration dates. In addition, 30,185 stock units under the Long Term Incentive Plan are described as restricted stock units in a deferred phantom stock account that are convertible into common stock on a one-for-one basis upon satisfaction of vesting conditions.

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

FEIGHT R PRESTON

(Last) (First) (Middle)

777 - 106TH AVE. N.E.

(Street)

BELLEVUE WA 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)
	CHIEF EXECUTIVE OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
01/07/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/07/2026		J(1)		207.321	A	$115.3	17,481(2)	I	By PACCAR Savings Investment Plan (SIP)
Common Stock								244,433	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option	$62.8667							01/01/2025	02/07/2032	Common Stock	51,165		51,165	D
Stock Option	$71.95							01/01/2026	02/08/2033	Common Stock	141,038		141,038	D
Stock Option	$104.16							01/01/2027	02/05/2034	Common Stock	104,244		104,244	D
Stock Option	$109.13							01/01/2028	02/03/2035	Common Stock	92,768		92,768	D
Stock Units (LTIP)	(3)							(3)	(3)	Common Stock	30,185		30,185	D

Explanation of Responses:

1. Dividend on PACCAR Savings Investment Plan (SIP) shares reinvested pursuant to SIP.

2. Balance includes shares awarded under PACCAR Savings Investment Plan (Company match) in exempt transaction(s) under Rule16b-3(c) and Rule 16b-3(d).

3. Restricted stock units held in deferred phantom stock account under Long Term Incentive Plan (LTIP) convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions.

	Michael R. Beers, by Power of Attorney	01/08/2026
	** Signature of Reporting Person	Date
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