Massivemarkets

SEC Form 4

Prosperity Bancshares Inc (PB) insider trading

In the 12 months to Oct 26, 2026, 5 PB insiders reported open-market sales of $5.9M across 56 filings; no open-market purchases were filed.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$5.9M
56 filings · 5 insiders
Open-market purchases
$0
0 filings
Pre-arranged sales (10b5-1)
52 of 56
$4.0M of $5.9M sold (68%)

Who traded PB, and when

  • Sale
  • Sale, pre-arranged (10b5-1)

PB daily close from Oct 27, 2025 to Oct 26, 2026, between $63.27 and $76.03, last $70.00. 56 sale and 0 purchase filings by 5 insiders, marked at their filing dates. Ned S. Holmes, Director: sold $4.0M across 52 filings, first filed Oct 31, 2025, last Oct 22, 2026. Perry Mueller Jr., Director: sold $1.6M across 1 filing, first filed Feb 18, 2026, last Feb 18, 2026. Robert H. Steelhammer, Director: sold $104.3K across 1 filing, first filed May 27, 2026, last May 27, 2026. Leah Henderson, Director: sold $76.7K across 1 filing, first filed Dec 11, 2025, last Dec 11, 2025. Harrison Stafford II, Director: sold $56.6K across 1 filing, first filed Dec 4, 2025, last Dec 4, 2025.

Largest mark · tap a row for others

Perry Mueller Jr. · Director

Sale $1,606,414

22,000 shares at $73.02 avg

Filed Feb 18, 2026 · traded Feb 12

Close on filing date $73.24

PB daily closelast $70.00

Ned S. Holmes · Director

$4.0M sold

Perry Mueller Jr. · Director

$1.6M sold

Robert H. Steelhammer · Director

$104.3K sold

Leah Henderson · Director

$76.7K sold

Harrison Stafford II · Director

$56.6K sold
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

56 filings in the last 12 months
Other insider activity (not market trades) · 27 records
  • Grants and awards27 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.

Frequently asked questions

Has Prosperity Bancshares Inc's CEO sold stock?

No. David Zalman (CEO) made no open-market sales filed as CEO in the last 12 months.

How current is PB’s insider data?

These are PB 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 PB 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 PB 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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