These are public filings.
Bottom of this page shows all the recent insider sales: https://finviz.com/quote.ashx?t=MS&p=d
If you want to see the actual SEC filing: https://www.sec.gov/Archives/edgar/data/895421/000120919123043056/xslF345X05/doc4.xml
Discussion
Thanks! Good info. It does look like the perfect time to sell if you'd expect the similar behavior of the past few price pumps.