ATO — Insider Trading Activity
One insider at ATO put personal money into the stock on the open market this window, led by a Director, with nobody selling.
What this means for ATO
ATO 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 Director (< $100K), growing their stake by 33%. Overall credibility score: 15/100 (Low).
By the numbers. One insider filed 1 open-market purchase at ATO over the window, 300 shares in all at an average of $167.59 a share, most recently on August 11, 2026. No insider sold ATO stock on the open market in that period.
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.
ATO insider filings, one by one
The single Form 4 filing from the last 90 days, 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 ATO in this window.
- CSWC insider trading — 1 buyer, credibility 13/100
- ADTN insider trading — 1 buyer, credibility 25/100
- HWBK insider trading — 1 buyer, credibility 16/100
- DBD insider trading — 1 buyer, credibility 23/100
- CLIK insider trading — 1 buyer, credibility 22/100