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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 $1.2M 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

$1.19M

Companies

6

Total Filings

55

Lifetime Open-Market Net

-$183.4K

Filer Profile

Reported Address
C/O KODIAK GAS SERVICES, INC.
9950 WOODLOCH FOREST DR. STE 1900
THE WOODLANDS, TX 77380
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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 $53.00 $1.19M $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.