Packaging Corp EVP sells 12,000 company shares

PACKAGING CORP OF AMERICA (PKG) executive Donald R. Shirley, Executive Vice President, reported selling 12,000 shares of common stock on 2026-08-20 in an open-market or private transaction at a weighted average price of $250.708 per share.

Rhea-AI Filing Summary

PACKAGING CORP OF AMERICA (PKG) executive Donald R. Shirley, Executive Vice President, reported selling 12,000 shares of common stock on 2026-08-20 in an open-market or private transaction at a weighted average price of $250.708 per share. After this sale, he holds 19,110 shares directly and 6,501 shares indirectly through a 401(k) plan. The sale price reflects multiple trades with prices ranging from $249.60 to $252.475 per share.

Insider Trade Summary

Net Seller: 12,000 shares

Net Sell 2 txns

Insider Shirley Donald R.

Role Exec. VP

Sold 12,000 shs ($3.01M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	12,000	$250.708	$3.01M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 19,110 shares (Direct); Common Stock — 6,501 shares (Indirect, by 401(k) plan)

Footnotes (1)

1. F1. The price listed is the weighted average sale price. The actual sales prices for these shares ranged between $249.60 and $252.475. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request.

Key Figures

Shares sold: 12,000 shares of Common Stock Weighted average sale price: $250.708 per share Sale price range: $249.60 to $252.475 per share +3 more

6 metrics

Shares sold 12,000 shares of Common Stock Sale on 2026-08-20 by Executive Vice President Donald R. Shirley

Weighted average sale price $250.708 per share Average price for the 12,000 shares sold on 2026-08-20

Sale price range $249.60 to $252.475 per share Range of prices for individual trades within the 12,000-share sale

Direct holdings after transaction 19,110 shares Direct PKG common stock held by Donald R. Shirley after the sale

Indirect holdings after transaction 6,501 shares Indirect PKG common stock held by 401(k) plan after the sale

Net shares sold 12,000 shares Net buy/sell direction for this Form 4 is net-sell of 12,000 shares

Key Terms

weighted average sale price, open market or private transaction, 401(k) plan

3 terms

weighted average sale price financial

"The price listed is the weighted average sale price."

open market or private transaction financial

"Sale in open market or private transaction"

401(k) plan financial

"nature_of_ownership: 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.

FAQ

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

What insider transaction did PKG executive Donald R. Shirley report?

Donald R. Shirley, Executive Vice President of PACKAGING CORP OF AMERICA, reported a sale of 12,000 shares of common stock on 2026-08-20 in an open-market or private transaction at a weighted average price of $250.708 per share.

At what prices did Donald R. Shirley sell PKG shares?

The reported sale by Donald R. Shirley used a weighted average price of $250.708 per share. The filing states that the individual trades occurred at prices ranging from $249.60 to $252.475 per share.

How many PKG shares does Donald R. Shirley own after the reported sale?

After the reported sale, Donald R. Shirley holds 19,110 PKG shares directly. He also has an indirect holding of 6,501 PKG shares through a 401(k) plan, as disclosed in the filing.

Was the PKG insider trade under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as affirmative (it is reported as false), and there is no footnote indicating that the 12,000-share sale by Donald R. Shirley was executed under a Rule 10b5-1 trading plan.

Does the PKG Form 4 show any derivative transactions for Donald R. Shirley?

No. The Form 4 shows no derivative transactions for Donald R. Shirley in this report. The transaction summary lists a sell of 12,000 common shares and one holding entry, with derivativeTransactionCount reported as 0.

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

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Available on EDGAR 08/24/2026 - 02:32 PM EDT Accepted by SEC EDGAR 08/24/2026 - 02:32 PM EDT 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^*

Shirley Donald R.

(Last) (First) (Middle)

1 N. FIELD CT

(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)
	Exec. VP

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026

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	08/20/2026		S		12,000	D	$250.708(1)	19,110	D
Common Stock								6,501	I	by 401(k) plan

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. The price listed is the weighted average sale price. The actual sales prices for these shares ranged between $249.60 and $252.475. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request.

	Kent A. Pflederer, attorney in fact	08/24/2026
	** 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)