Form 4 (Insider Transaction) Form 4
A US filing that company insiders must submit to report their own purchases or sales of the company's stock.
What it is
Form 4 is a report that company insiders, officers, directors, and 10%-or-greater owners, file with the SEC to disclose changes in their ownership of the company's securities. It records buys, sells, option exercises, and grants, including the date, number of shares, and price. It must be filed within two business days of the transaction, making it one of the more timely insider-ownership signals.
Why it matters
Form 4 buying, especially open-market purchases with an insider's own cash, is often watched as a confidence signal because insiders know the business best. The key pitfall is interpreting sales: insiders sell for many reasons unrelated to outlook (taxes, diversification, pre-set 10b5-1 plans), so a sale is far weaker evidence than a buy. Always check whether a trade was an open-market action or a routine grant or plan-based transaction.
How it's calculated
It is a regulatory disclosure form, not a computed metric; it itemizes each reportable insider transaction with its date, share count, and price.
How Quintarthai uses it
Form 4 and SEDI insider transactions populate Quinn's insider tracker, each linked to a provenance receipt back to the original filing; review them on a company's deep-analysis page.