SEC Form 4
Packaging Corp of America (PKG) insider trading
In the 12 months to Oct 26, 2026, 3 PKG insiders reported open-market sales of $15.0M across 5 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $15.0M
- 5 filings · 3 insiders
- Open-market purchases
- $0
- 0 filings
Who traded PKG, and when
- Sale
PKG daily close from Oct 27, 2025 to Oct 26, 2026, between $191.68 and $257.43, last $253.74. 5 sale and 0 purchase filings by 3 insiders, marked at their filing dates. Thomas A. Hassfurther, President: sold $10.0M across 3 filings, first filed Feb 9, 2026, last Aug 11, 2026. Donald R. Shirley, Exec. VP: sold $3.0M across 1 filing, first filed Aug 24, 2026, last Aug 24, 2026. Mark W. Kowlzan, Chairman & CEO: sold $2.0M across 1 filing, first filed May 28, 2026, last May 28, 2026.
Largest mark · tap a row for others
Thomas A. Hassfurther · President
Filing 1 of 2 within a week · $7,187,581 total
Sale $5,393,579
21,328 shares at $252.89 avg
Filed Aug 5, 2026 · traded Aug 3
Close on filing date $256.01
Thomas A. Hassfurther · President
President
$10.0M soldDonald R. Shirley · Exec. VP
Exec. VP
$3.0M soldMark W. Kowlzan · Chairman & CEO
Chairman & CEO
$2.0M soldOpen-market trades
5 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Thomas A. Hassfurther | President | $10.0M | — | 3 | — | |
| Donald R. Shirley | Exec. VP | $3.0M | — | 1 | — | |
| Mark W. Kowlzan | Chairman & CEO | $2.0M | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Donald R. Shirley Exec. VP | Sale | 12,000 | $250.71 | $3.0M | 19,110 | |
traded | Thomas A. Hassfurther President | Sale | 7,063 | $254.00 | $1.8M | 202,891 | |
traded | Thomas A. Hassfurther President | Sale | 21,328 | $252.89 | $5.4M | 209,954 | |
traded | Mark W. Kowlzan Chairman & CEO | Sale | 9,266 | $217.08 | $2.0M | 473,610 | |
traded | Thomas A. Hassfurther President | Sale | 12,129 | $230.50 | $2.8M | 197,062 |
GET /stocks/filings/vX/form-4?tickers=PKG&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"PKG"
],
"issuer_cik": "0000075677",
"owner_cik": "0001776032",
"accession_number": "0001193125-26-363053",
"form_type": "4",
"filing_date": "2026-08-24",
"period_of_report": "2026-08-20",
"issuer_name": "PACKAGING CORP OF AMERICA",
"issuer_trading_symbol": "PKG",
"owner_name": "Shirley Donald R.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Exec. VP",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-20",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 12000,
"transaction_price_per_share": 250.708,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 19110,
"transaction_value": 3008496,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "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."
}
]
},
{
"tickers": [
"PKG"
],
"issuer_cik": "0000075677",
"owner_cik": "0001318252",
"accession_number": "0001193125-26-343705",
"form_type": "4",
"filing_date": "2026-08-11",
"period_of_report": "2026-08-07",
"issuer_name": "PACKAGING CORP OF AMERICA",
"issuer_trading_symbol": "PKG",
"owner_name": "Hassfurther Thomas A",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "President",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-07",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 7063,
"transaction_price_per_share": 254,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 202891,
"transaction_value": 1794002,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 60 records
- Tax withholding20 records
- Grants and awards40 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Packaging Corp of America's CEO sold stock?
Yes. Mark W. Kowlzan (CEO) sold 9,266 shares ($2.0M) in May 2026.
How current is PKG’s insider data?
These are PKG Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track PKG insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for PKG every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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