Insider trading map

Open-market purchases and sales by officers, directors and 10% owners, from their SEC Form 4 filings: one tile per company, sized by the dollars traded (shares times the price on the form). Grants, awards and option exercises are not open-market trades and are left out. Purchases and sales are two maps, each on its own scale: sales run far larger, and on one scale every purchase would be a speck.

Window: Form 4s filed in the 180 days before each company’s filing list was read, its newest 24 at most. 141 lists, read from SEC EDGAR between Oct 21, 7:00 PM ET and Oct 21, 8:45 PM ET. Each tile prints its own filing dates.

A sale can be planned months ahead under a Rule 10b5-1 trading plan; each sales tile’s title gives the share of its dollars filed with that box checked. These are filings, not advice: a trade says what an insider did, not what anyone else should do. Every trade, row by row → · the sector map → · the map by size → · how every figure is made →