Form 144/A Filings

What Is SEC Form 144/A?

SEC Form 144/A is an amendment to Form 144 (Notice of Proposed Sale of Securities) used in connection with resales under Rule 144 of the Securities Act of 1933. It is filed to revise or correct information previously reported, such as changes to the amount to be sold, intended sale details, or other filer and transaction information reflected in the original notice.

This amendment is typically filed when an affiliate or other person subject to the Form 144 notice requirement needs to update an earlier Form 144 submission before completing the proposed sale. Because Form 144 is tied to a proposed transaction, Form 144/A is event-driven and filed as needed when information in the original notice requires correction or revision.

Form 144/A supports transparency by ensuring that the public record reflects updated details regarding a proposed Rule 144 sale. The underlying Form 144 provides the original notice, while Form 144/A identifies changes or corrections associated with that previously submitted filing.

Key elements typically found in SEC Form 144/A include:

• Name and address of the seller and relationship to the issuer
• Title and amount of securities to be sold, as amended
• Broker-dealer or market maker and transaction details, as amended
• Aggregate market value or sales price information, as amended
• Issuer and security identification details, including CUSIP where applicable
• Confirmation that the filing is an amendment to a prior Form 144

Companies and insiders may rely on specialized EDGAR service providers when preparing transaction-related notices and amendments. Researchers examining this filing ecosystem can review broader filing agent insights to understand the firms involved in preparing and submitting SEC filings.

SEC Form 144/A Filing Deadlines

SEC Form 144/A does not have a fixed periodic deadline. Instead, it is filed as needed to amend a previously filed Form 144 when information changes in connection with a proposed Rule 144 sale. Timing is important because the notice is tied to a proposed transaction and should accurately reflect the information associated with that sale.

Researchers evaluating Form 144/A activity should generally review the amendment together with the original Form 144 and the issuer’s surrounding SEC filings to understand what information changed and how the proposed transaction developed.

Key Things to Know About Form 144/A Filing Rules

• Amends a Prior Form 144: Form 144/A is used specifically to update or correct information previously reported on Form 144 rather than serving as an original notice.
• Event-Driven, Not Periodic: There is no quarterly or annual filing cycle. Form 144/A is submitted when information associated with a proposed Rule 144 sale requires amendment.
• Used for Rule 144 Sale Notices: The filing relates to proposed resales under Rule 144 and is commonly associated with affiliate transactions subject to the Form 144 notice requirement.
• Accuracy and Timing Matter: Because the notice relates to a proposed transaction, amendments help keep the filing record accurate when relevant information changes.
• Does Not Replace Rule 144 Conditions: Filing Form 144 or Form 144/A does not itself establish eligibility for the Rule 144 safe harbor; the transaction must still satisfy the applicable conditions.

To monitor insider resale notices and amendments, analysts track Form 144 and Form 144/A filings alongside related issuer and market activity. This provides visibility into affiliate sales and compliance with resale rules. Our platform highlights these filings as part of broader Insider Transactions and Trading activity, helping you stay informed about disclosure updates and resale compliance.