SEC Form 144 explained — notice of proposed sale

A Form 144 is a notice of intent to sell. An affiliate (insider) files it before selling restricted or control securities under Rule 144. Crucially, it reports a proposed sale — the shares may or may not actually be sold.

When it is required

When an affiliate intends to sell, within a three-month period, more than 5,000 shares or shares worth more than $50,000. The notice must be filed at or before the sale is placed with a broker.

The Rule 144 conditions

Rule 144 is the safe harbor that lets insiders resell restricted or control stock without a separate registration, provided several conditions are met:

• Holding period — restricted shares must have been held for at least six months (reporting companies) or one year.
• Current public information — the company must be up to date on its SEC reporting.
• Volume limit — in any three months an affiliate may sell at most the greater of 1% of shares outstanding or the average weekly trading volume.
• Manner of sale — shares must be sold in ordinary brokers’ transactions.
• The notice — filing the Form 144 itself.

Affiliates vs non-affiliates

These conditions bind affiliates — insiders and control persons. A non-affiliate who has held restricted shares long enough can generally sell without filing a 144 at all, which is why most 144s you see come from officers, directors, and large holders.

A 144 is not the sale

A Form 144 is forward-looking intent; the executed sale, if it happens, shows up later as a Form 4 with code S. SEC Notifier keeps proposed sales separate from actual Form 4 sales so the two are never conflated, and surfaces whether the sale is under a Rule 10b5-1 plan.

Using it as a leading indicator

Because it precedes the trade, a cluster of Form 144s can foreshadow selling pressure — but treat it as a plan, not a fact, since filed sales do not always execute in full.