GPI — Insider Trading Activity
Insider buying at GPI has stepped up sharply against its own history — 7.4× the dollar value of the trailing 11-month baseline.
What this means for GPI
Unusual activity. Recent buying at GPI is running noticeably above its trailing 11-month baseline. That doesn’t guarantee outperformance, but a step-change in insider behavior is worth investigating alongside the fundamentals. Who is buying. The most credible buyer in this window is a 10% Owner ($100M+), growing their stake by 37%. Overall credibility score: 34/100 (Low).
By the numbers. One insider filed 75 open-market purchases at GPI over the window, 446,318 shares in all at an average of $271.08 a share, most recently on September 25, 2026. No insider sold GPI stock on the open market in that period. Buying over the window ran 7.4× the dollar value of GPI’s trailing 11-month baseline.
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.
GPI insider filings, one by one
All 75 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 unusual buying flag as GPI in this window.
- GSAT insider trading — 1 buyer, 5 sellers, credibility 54/100
- ADRX insider trading — 2 buyers, credibility 62/100
- LEN insider trading — 1 buyer, credibility 32/100
- ETRA insider trading — 2 buyers, credibility 68/100
- GGR insider trading — 1 buyer, credibility 53/100