Insider transactions

Stephen Tadlock

CIK 1710396 · EVP/CEO Cactus Intl · last filed 2026-08-05

Stephen Tadlock is an EVP/CEO Cactus Intl who has filed 27 SEC Form 4 insider transactions across 1 company since 2018. The most recent filing, for WHD, was dated Aug 5, 2026. Across all open-market trades the lifetime net is −$8.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.3M 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
$5.34M
Companies
1
Total Filings
27
Lifetime Open-Market Net
-$8.66M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

Filer Profile

Reported Address
COBALT CENTER 920 MEMORIAL CITY WAY
SUITE 300
HOUSTON, TX 77024
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
WHD EVP/CEO Cactus Intl 81,633 $65.38 $5.34M -$8.66M 23 2026-08-05

Recent Filings

27 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
2026-08-05 WHD Mixed −38,890 -$2.45M EDGAR
2026-08-03 WHD Notice (144) −38,455 -$2.46M EDGAR
2026-03-12 WHD Mixed +10,294 -$324.7K EDGAR
2026-03-02 WHD Mixed +16,676 -$557.9K EDGAR
2026-01-05 WHD Grant (A) — $0 EDGAR
2025-03-21 WHD Mixed +9,403 -$274.5K EDGAR
2025-03-12 WHD Mixed +9,418 -$280.3K EDGAR
2024-11-06 WHD Gift (G) −80 $0 EDGAR
2024-11-04 WHD Notice (144) −33,500 -$2.05M EDGAR
2024-11-04 WHD Sell (S) −33,500 -$2.06M EDGAR
Showing 1–10 of 27
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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.