GTLB — Insider Trading Activity
One insider at GTLB put personal money into the stock on the open market this window, led by the CEO, against 3 insiders selling.
What this means for GTLB
GTLB is not showing a cluster buy or a step-change versus its own baseline, so what the window amounts to is a single insider acting alone. Who is buying. The most credible buyer in this window is the company’s CEO ($100K–$500K). That insider’s track record: past buys beat the S&P 500 1 of 2 times (avg +36% vs S&P over 6 mo). Overall credibility score: 33/100 (Low).
By the numbers. One insider filed 1 open-market purchase at GTLB over the window, 2,677 shares in all at an average of $46.62 a share, most recently on September 30, 2026. On the other side, 3 insiders filed 11 sales covering 2,176,840 shares at an average of $47.68, the latest on September 28, 2026. That puts the average sale 2% above the average purchase — worth checking against where the stock trades today.
How we read these filings — which transaction codes count, how the cluster and credibility thresholds are set, and what the signals have and haven’t predicted — is written up in the insider trading methodology.
GTLB insider filings, one by one
All 12 Form 4 filings from the last 90 days, by insider, with share count, dollar amount and date.
Other tickers with the same signal
Companies of a comparable size whose Form 4 filings tripped the same insider buying flag as GTLB in this window.
- ATTO insider trading — 6 buyers, 2 sellers, credibility 81/100
- DYN insider trading — 1 buyer, 6 sellers, credibility 11/100
- BRVE insider trading — 10 buyers, credibility 88/100
- BFLY insider trading — 1 buyer, 8 sellers, credibility 39/100
- FTK insider trading — 1 buyer, 1 seller, credibility 50/100