SEC Form 4
Quanex Building Products Corporation (NX) insider trading
In the 12 months to Nov 4, 2026, 2 NX insiders reported open-market sales of $3.4M across 2 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $3.4M
- 2 filings · 2 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 1 of 2
- $117.3K of $3.4M sold (4%)
Who traded NX, and when
- Sale
- Sale, pre-arranged (10b5-1)
NX daily close from Nov 4, 2025 to Nov 4, 2026, between $11.25 and $22.93, last $22.62. 2 sale and 0 purchase filings by 2 insiders, marked at their filing dates. Igor Tadeusz Kuzniar, 10% owner: sold $3.2M across 1 filing, first filed Dec 18, 2025, last Dec 18, 2025. Paul Cornett, SVP General Counsel, Secretary: sold $117.3K across 1 filing, first filed Nov 3, 2026, last Nov 3, 2026.
Largest mark · tap a row for others
Igor Tadeusz Kuzniar · 10% owner
Sale $3,233,424
200,000 shares at $16.17 avg
Filed Dec 18, 2025 · traded Dec 16
Close on filing date $16.26
Igor Tadeusz Kuzniar · 10% owner
10% owner
$3.2M soldPaul Cornett · SVP General Counsel, Secretary
SVP General Counsel, Secretary
$117.3K soldOpen-market trades
2 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Igor Tadeusz Kuzniar | 10% owner | $3.2M | — | 1 | — | |
| Paul Cornett | SVP General Counsel, Secretary | $117.3K | — | 1 | 100% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Paul Cornett SVP General Counsel, Secretary | SalePre-arranged (10b5-1) | 5,500 | $21.32 | $117.3K | 70,074 | |
traded | Igor Tadeusz Kuzniar 10% owner | Sale | 200,000 | $16.17 | $3.2M | 4,421,879 |
GET /stocks/filings/vX/form-4?tickers=NX&filing_date.gte=2025-11-04&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"NX",
"NXw"
],
"issuer_cik": "0001423221",
"owner_cik": "0001793319",
"accession_number": "0001423221-26-000061",
"form_type": "4",
"filing_date": "2026-11-03",
"period_of_report": "2026-11-02",
"issuer_name": "Quanex Building Products CORP",
"issuer_trading_symbol": "NX",
"owner_name": "Cornett Paul",
"is_officer": true,
"officer_title": "SVP General Counsel, Secretary",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-11-02",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 5500,
"transaction_price_per_share": 21.3247,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 70073.5244,
"transaction_value": 117285.85,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The stock options were exercised pursuant to a Rule 10b5-1 preset diversification program previously adopted by the reporting person on July 1, 2021."
},
{
"id": "F3",
"description": "The price reported is a weighted-average price. The shares were sold in multiple transactions at prices ranging from $21.08 to $21.76, inclusive. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."
},
{
"id": "F2",
"description": "Includes 77.915 shares credited to the reporter's account as the result of dividend reinvestments under the Company's Employee Stock Purchase Plan."
}
]
},
{
"tickers": [
"NX",
"NXw"
],
"issuer_cik": "0001423221",
"owner_cik": "0001690451",
"accession_number": "0000919574-25-007430",
"form_type": "4",
"filing_date": "2025-12-18",
"period_of_report": "2025-12-16",
"issuer_name": "Quanex Building Products CORP",
"issuer_trading_symbol": "NX",
"owner_name": "Teleios Capital Partners GmbH",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": true,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, par value $0.01 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2025-12-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 119485,
"transaction_price_per_share": 15.9387,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 4421879,
"transaction_value": 1904435.5695,
"not_subject_to_section_16": true,
"direct_or_indirect": "I",
"nature_of_ownership": "See footnote",
"footnotes": [
{
"id": "F2",
"description": "This reported price is a weighted average price. These shares were bought in multiple transactions within the range of $15.65 and $16.43 The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares bought at each separate price within the range set forth in this footnote."
},
{
"id": "F3",
"description": "The securities reported herein are held by Teleios Global Opportunities Master Fund, Ltd., a Cayman Islands exempted company (the \"Master Fund\"). The reported securities may be deemed beneficially owned by Teleios Capital Partners GmbH, the investment manager of the Master Fund, and Teleios Capital Partners GmbH's managing member and controlling shareholder: Igor Kuzniar. Each of Mr. Kuzniar, the Master Fund, and Teleios Capital Partners GmbH, a Reporting Person. Teleios Capital Partners GmbH and Igor Kuzniar each disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that each Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."
}
]
}
]
}
// 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) · 11 records
- Option exercises1 record
- Tax withholding4 records
- Grants and awards6 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.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.
Frequently asked questions
Has the Quanex Building Products Corporation's CEO sold stock?
No. George Laverne Wilson (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is NX’s insider data?
These are NX 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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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 NX 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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