SEC Form 4
INTL BANCSHARES CORP (IBOC) insider trading
In the 12 months to Oct 26, 2026, one IBOC insider reported open-market sales of $720.0K across 1 filing; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $720.0K
- 1 filing · 1 insider
- Open-market purchases
- $0
- 0 filings
Who traded IBOC, and when
- Sale
IBOC daily close from Oct 27, 2025 to Oct 26, 2026, between $63.42 and $77.84, last $66.78. 1 sale and 0 purchase filings by 1 insider, marked at their filing dates. Larry A. Norton, Director: sold $720.0K across 1 filing, first filed May 22, 2026, last May 22, 2026.
Largest mark · tap a row for others
Larry A. Norton · Director
Sale $720,000
10,000 shares at $72.00 avg
Filed May 22, 2026 · traded May 21
Close on filing date $72.78
Larry A. Norton · Director
Director
$720.0K soldOpen-market trades
1 filing in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Larry A. Norton | Director | $720.0K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Larry A. Norton Director | Sale | 10,000 | $72.00 | $720.0K | 111,917 |
GET /stocks/filings/vX/form-4?tickers=IBOC&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"IBOC"
],
"issuer_cik": "0000315709",
"owner_cik": "0001498441",
"accession_number": "0001498441-26-000002",
"form_type": "4",
"filing_date": "2026-05-22",
"period_of_report": "2026-05-21",
"issuer_name": "INTERNATIONAL BANCSHARES CORP",
"issuer_trading_symbol": "IBOC",
"owner_name": "Norton Larry A",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-21",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 10000,
"transaction_price_per_share": 72,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 111917,
"transaction_value": 720000,
"direct_or_indirect": "I",
"nature_of_ownership": "Held in partnership"
}
]
}
// trimmed to 1 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) · 3 records
- Option exercises2 records
- Other1 record
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
How current is IBOC’s insider data?
These are IBOC 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.
Build with AI
Track IBOC 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 IBOC 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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