Insider transactions

Thomas J. Janssens

CIK 1834230 · SVP, Ops - PEM & Corp Logistic · last filed 2025-02-24

Thomas J. Janssens is a SVP, Ops - PEM & Corp Logistic who has filed 17 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing, for WLK, was dated Feb 24, 2025. Current disclosed insider exposure totals $1.1M 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
$1.12M
Companies
1
Total Filings
17
Lifetime Open-Market Net
$0

Charts

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

WLK price and trades

Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.

Shares held

Shares owned after each reported transaction on this company (direct holdings as reported).

Exposure by company

latest
OfficerDirector10% owner* stale (no filing in 3 yrs)

Most recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.

Filer Profile

Reported Address
2801 POST OAK BLVD.
SUITE 600
HOUSTON, TX 77056
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
WLK SVP, Ops - PEM & Corp Logistic 17,733 $63.33 $1.12M $0 15 2025-02-24

Recent Filings

17 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
2025-02-24 WLK Mixed +1,838 -$67.0K EDGAR
2025-02-20 WLK Mixed +977 -$37.5K EDGAR
2025-02-19 WLK Mixed +2,249 -$91.1K EDGAR
2024-08-26 WLK Mixed — -$1.10M EDGAR
2024-08-23 WLK Notice (144) −14,864 -$2.22M EDGAR
2024-02-21 WLK Mixed +2,532 -$128.6K EDGAR
2024-02-20 WLK — — $0 EDGAR
2024-02-20 WLK Grant (A) — $0 EDGAR
2024-02-20 WLK Grant (A) — $0 EDGAR
2023-08-30 WLK Mixed — -$100.2K EDGAR
Showing 1–10 of 17
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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.