CRBP — Insider Trading Activity
One insider at CRBP put personal money into the stock on the open market this window, led by a Chief Business Officer, against 3 insiders selling.
What this means for CRBP
CRBP 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 a Chief Business Officer (< $100K), growing their stake by 1%. Overall credibility score: 11/100 (Low).
By the numbers. One insider filed 1 open-market purchase at CRBP over the window, 2,600 shares in all at an average of $9.63 a share, most recently on August 11, 2026. On the other side, 3 insiders filed 3 sales covering 31,000 shares at an average of $9.94, the latest on September 14, 2026. That puts the average sale 3% 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.
CRBP insider filings, one by one
All 4 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 CRBP in this window.
- FOSL insider trading — 1 buyer, 1 seller, credibility 13/100
- CIA insider trading — 3 buyers, credibility 56/100
- DFDV insider trading — 2 buyers, credibility 37/100
- GDTC insider trading — 1 buyer, credibility 29/100
- ARBE insider trading — 1 buyer, 1 seller, credibility 9/100