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Jon-Al Duplantier

CIK 1472434 · See Remarks · last filed 2026-07-01

Jon-Al Duplantier is a corporate insider who has filed 55 SEC Form 4 insider transactions across 6 companies since 2010. The most recent filing, for STEL, was dated Jul 1, 2026. Across all open-market trades the lifetime net is −$183.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.4M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$1.39M

Companies

6

Total Filings

55

Lifetime Open-Market Net

-$183.4K

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
Stellar Bancorp, Inc. (STEL) Delisted Director 0 $39.32 $0 $0 6 2026-07-01
KGS Director 22,541 $61.50 $1.39M $16.0K 4 2026-05-11
Sitio Royalties Corp. (STR) Delisted Director 0 $18.12 $0 $0 4 2025-08-19
Allegiance Bancshares, Inc. (ABTX) Delisted Director 0 $41.63 $0 $0 4 2022-10-03
Brigham Minerals, Inc. (MNRL) Delisted Director 15,300 $32.50 $497.2K $0 2 2022-05-26
PARKER DRILLING CO /DE/ (PKD) Delisted See Remarks 3,799 — — -$199.4K 32 2019-03-28

Recent Filings

55 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-07-01 Stellar Bancorp, Inc. (STEL) Delisted Disp (D) −10,508 $0 EDGAR
2026-05-11 KGS Grant (A) +2,135 $150.0K EDGAR
2025-08-19 Sitio Royalties Corp. (STR) Delisted Disp (D) −57,940 $0 EDGAR
2025-06-10 Stellar Bancorp, Inc. (STEL) Delisted Grant (A) +2,230 $0 EDGAR
2025-05-15 Sitio Royalties Corp. (STR) Delisted Grant (A) +16,216 $0 EDGAR
2025-04-24 KGS Grant (A) +4,512 $0 EDGAR
2024-06-12 Stellar Bancorp, Inc. (STEL) Delisted Grant (A) +2,660 $0 EDGAR
2024-05-14 Sitio Royalties Corp. (STR) Delisted Grant (A) +12,680 $0 EDGAR
2024-05-01 KGS Grant (A) +5,519 $0 EDGAR
2023-07-05 KGS Mixed +10,375 $16.0K EDGAR
Showing 1–10 of 55
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.