Mabru Thierry sold ~$2.3M in GTX stock
GTX (GTX) · SVP, Integrated Supply Chain · Data via SEC EDGAR Form 4
Price Performance · 10 days before → 90 days after trade
▲ = insider buy date
Trade Details · Public SEC Filing
Insider
Mabru Thierry
Role
SVP, Integrated Supply Chain
Transaction
Open-Market Sale
Approx. Value
~$2.3M
Trade Date
May 29, 2026
Company
GTX
Ticker
GTXSource
SEC EDGAR Form 4
Why This Trade Stands Out
Very Strong conviction signal
Scored in the top tier across multiple factors. Fewer than 5% of insider trades receive this rating.
~$2.3M sale
Trades over $1M are rare. When insiders put this much of their own money on the line, they tend to have high conviction in their company's direction.
SVP, Integrated Supply Chain
Senior executives have visibility into their division's pipeline and company health. Their trades carry weight because they understand the business from the inside.
How good is Mabru Thierry at picking stocks?
Full track record: win rate, average return, and performance vs S&P 500
On May 29, 2026, Mabru Thierry — SVP, Integrated Supply Chain of GTX — filed a Form 4 with the SEC disclosing an open-market sale of approximately ~$2.3M in GTX (GTX) stock.
Under Section 16(a) of the Securities Exchange Act of 1934, corporate insiders must report all open-market stock transactions to the SEC within two business days. These filings — known as Form 4s — are publicly available on the SEC's EDGAR database. VeritySignals filters and scores the full Form 4 stream to surface high-conviction signals like this one.
VeritySignals Conviction Analysis
Full Conviction Analysis
Sign up free to see signal strength details, or upgrade for the full 15-factor breakdown.
Get notified the next time Mabru Thierry trades
Free alerts · No credit card · Instant notification
All data sourced from publicly available SEC Form 4 filings via EDGAR · Not financial advice · Past performance does not guarantee future results.
At a Glance
More GTX Insider Activity
Deason Sean
Jun 5, 2026
~$3.5M
VS
Rabiller Olivier
Feb 27, 2026
~$19M
STRONG
Rabiller Olivier
Feb 24, 2026
~$9.7M
STRONG
Rabiller Olivier
May 5, 2021
~$1.1M
VS
How to Read Insider Trades
What is this?
When company executives buy or sell their own stock, they must report it to the SEC within 2 days. These public filings reveal what the people who know the company best are doing with their own money.
Why does it matter?
Insiders can sell for many reasons (taxes, diversification, expenses), but they generally only buy for one: they think the stock is going up. That's why insider purchases are more predictive than sales.
What makes a trade "strong"?
We score trades on 15+ factors: the insider's role (CEO > director), trade size relative to their salary, whether other insiders also bought (clusters), and historical accuracy of the insider.
Never miss a signal
Get notified when high-conviction insiders buy. Free account, no credit card.
Sign up free