The name is misleading: most of the industry would call Form 4 data "insider transactions" since insider trading is a crime. The first time I saw this link co

The name is misleading: most of the industry would call Form 4 data "insider transactions" since insider trading is a crime. The first time I saw this link come up on HN I was at work and afraid to even click on it lest it contain actual inside trade info. Also, most (if not all) public company insiders* have something called a 10b5-1 Plan to prevent insider trading - and making a lot of this data pretty irrelevant. Although the transactions might be recent they're probably automated/scheduled transactions more closely related to personal wealth management than anything to do with the company. If you look closely many of the filings will have a footnote saying transactions were pursuant to a 10b5-1 Plan. Others you'll be able to see a common pattern of days for employees to transact that are scheduled in advance. If you calculate the "cluster ranking" for 2017 and 2018 you'll be able to predict when those same companies will "cluster rank" again because the permitted transaction cycles are set by company policy. *edit: dropped an important word