Summary
Updated Aug 30, 2026
L. Jack Lord files SEC Form 4 reports at PROSPERITY BANCSHARES INC (PB). 2 SEC Form 4 filings on record going back to 2025, most recently on 22 April 2026.
Recent Transactions
2Every recent SEC Form 4 transaction L. Jack Lord has reported, most recent first.
Trading Pattern
InsiderAlpha's records for L. Jack Lord go back to 2025: 2 primary Form 4 filings, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies L. Jack Lord files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Ned S. Holmes - $3.91M of PB open-market activity in the last 12 months
- Perry Mueller Jr. - $1.61M of PB open-market activity in the last 12 months
- Robert H. Steelhammer - $104K of PB open-market activity in the last 12 months
- Leah Henderson - $77K of PB open-market activity in the last 12 months
- Harrison Stafford II - $57K of PB open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is L. Jack Lord?
L. Jack Lord is a corporate insider of PROSPERITY BANCSHARES INC (PB). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did L. Jack Lord last file a Form 4?
The most recent primary Form 4 on record is dated 22 April 2026, one of 2 filings going back to 2025.
Where can I see all of L. Jack Lord's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow L. Jack Lord and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial