Packaging Corp president sells 21,328 shares

Packaging Corp of America president Thomas A. Hassfurther reported open-market sales of company common stock.

Rhea-AI Filing Summary

Packaging Corp of America president Thomas A. Hassfurther reported open-market sales of company common stock. He sold 8,797 shares on August 5, 2026 at $257 per share and 12,531 shares on August 3, 2026 at $250 per share, totaling 21,328 shares. The trades were not reported as made under a Rule 10b5-1 trading plan. Reported indirect positions include 12,176 shares in a 401(k) plan, 53,862 shares held by his spouse, for which he disclaims beneficial ownership, and 34,293 shares held through an investment entity, for which he reports beneficial ownership only to the extent of his pecuniary interest.

Insider Trade Summary

Net Seller: 21,328 shares

Net Sell 5 txns

Insider Hassfurther Thomas A

Role President

Sold 21,328 shs ($5.39M)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,797	$257.00	$2.26M
Sale	Common Stock	12,531	$250.00	$3.13M
holding	Common Stock	--	--	--
holding	Common Stock F1	--	--	--
holding	Common Stock F2	--	--	--

Holdings After Transaction: Common Stock — 209,954 shares (Direct); Common Stock — 12,176 shares (Indirect, by 401(k) plan); Common Stock — 53,862 shares (Indirect, By Spouse); Common Stock — 34,293 shares (Indirect, Through investment entity)

Footnotes (2)

1. F1. Reporting person disclaims beneficial ownership of shares held by spouse.
2. F2. Reporting person disclaims beneficial ownership of shares held by investment entity except to the extent of his pecuniary interest therein.

Key Figures

Shares sold on 2026-08-05: 8,797 shares Shares sold on 2026-08-03: 12,531 shares Total shares sold: 21,328 shares +3 more

6 metrics

Shares sold on 2026-08-05 8,797 shares Common stock sold at $257 per share on August 5, 2026

Shares sold on 2026-08-03 12,531 shares Common stock sold at $250 per share on August 3, 2026

Total shares sold 21,328 shares Aggregate common shares sold per transaction summary

Indirect 401(k) holdings 12,176 shares Common stock held indirectly by 401(k) plan after transactions

Spouse-held shares 53,862 shares Indirect common stock held by spouse; beneficial ownership disclaimed

Investment entity shares 34,293 shares Indirect common stock through investment entity; ownership only to extent of pecuniary interest

Key Terms

beneficial ownership, pecuniary interest, 401(k) plan, indirect ownership

4 terms

beneficial ownership financial

"Reporting person disclaims beneficial ownership of shares held by spouse."

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"Disclaims ownership of investment entity shares except to the extent of his pecuniary interest therein."

401(k) plan financial

"Indirect ownership nature is listed as by 401(k) plan."

A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.

indirect ownership financial

"Ownership type is marked as indirect for spouse and investment entity holdings."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did PKG's Thomas A. Hassfurther report?

Thomas A. Hassfurther, president of Packaging Corp of America, reported selling 21,328 shares of common stock on August 3 and 5, 2026, in open-market transactions at prices between $250 and $257 per share.

How many PKG shares did Hassfurther sell on each transaction date?

Hassfurther sold 12,531 shares of Packaging Corp of America common stock on August 3, 2026 at $250 per share and 8,797 shares on August 5, 2026 at $257 per share, according to the Form 4 filing.

Were Hassfurther’s PKG stock sales made under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox is not marked, indicating Hassfurther’s reported stock sales were not identified as being made pursuant to a Rule 10b5-1 trading plan or similar prearranged program.

What indirect PKG share holdings are reported for Hassfurther?

Indirect positions include 12,176 shares held by a 401(k) plan, 53,862 shares held by his spouse, and 34,293 shares through an investment entity, with the filing stating he disclaims beneficial ownership of spouse shares and owns the entity shares only to his pecuniary interest.

Does Hassfurther claim beneficial ownership of all indirectly held PKG shares?

No. He disclaims beneficial ownership of shares held by his spouse and reports ownership of shares held through an investment entity only to the extent of his pecuniary interest, as described in the footnotes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/05/2026 - 02:42 PM Accepted by SEC EDGAR 08/05/2026 - 02:41 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Hassfurther Thomas A

(Last) (First) (Middle)

1 N. FIELD COURT

(Street)

LAKE FOREST ILLINOIS 60045

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PACKAGING CORP OF AMERICA [ PKG ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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

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	08/03/2026		S		12,531	D	$250	218,751	D
Common Stock	08/05/2026		S		8,797	D	$257	209,954	D
Common Stock								12,176	I	by 401(k) plan
Common Stock								53,862	I	By Spouse(1)
Common Stock								34,293	I	Through investment entity(2)

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

Explanation of Responses:

1. Reporting person disclaims beneficial ownership of shares held by spouse.

2. Reporting person disclaims beneficial ownership of shares held by investment entity except to the extent of his pecuniary interest therein.

	Kent A. Pflederer, attorney in fact	08/05/2026
	** 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 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.
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 4: SEC 1474 (03-26)