SEC Form 144: The Insider Selling Signal Most Investors Miss

What Is a Form 144 Filing?

Form 144 is a notice filed with the SEC when a corporate insider intends to sell restricted or control securities. It must be filed on or before the date the sell order is placed. Unlike Form 4, which reports completed transactions, Form 144 is a forward-looking disclosure that signals planned selling before it happens.

What Form 144 Reveals

• The insider's name and relationship to the company
• The number of shares planned for sale
• The approximate date of the planned sale
• The broker or market where shares will be sold
• The insider's total holdings

Why Form 144 Matters for Investors

Form 4 tells you what happened. Form 144 tells you what is about to happen. When a CEO or CFO files a Form 144 for a large block of shares, it can signal reduced conviction in the company's near-term prospects — before the sale is reflected in ownership data.

Form 144 vs Form 4

Form 144	Form 4
Filed before the sale	Filed within 2 days of sale
Planned transaction	Completed transaction
Forward-looking signal	Historical record

How NexusAlert Helps With Form 144

NexusAlert now tracks every Form 144 filing in real time. When an insider files a planned sale notice, NexusAlert flags it as a risk signal, adds it to your watchlist alerts, and surfaces it alongside Form 4 activity so you see the complete insider transaction picture from intent to execution.

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