What it is
A 19b-4 filing is a formal proposal submitted by a national securities exchange, such as Nasdaq or NYSE Arca, to the Securities and Exchange Commission (SEC). This filing details a proposed rule change, which can include the listing and trading of new financial products like spot Bitcoin or Ethereum ETFs. The SEC reviews this filing to ensure the proposed product adheres to investor protection rules and market integrity standards before approving or disapproving it.
For crypto ETFs, the 19b-4 filing is a critical step in the approval process, demonstrating the exchange's readiness to list the product. While an approval of this filing indicates the SEC's agreement to allow an exchange to list the product, it does not mean the ETF can immediately begin trading. A separate S-1 registration statement also needs to be declared effective by the SEC before trading can commence, making it a two-part regulatory hurdle.
Why it matters
An approved 19b-4 filing is a major regulatory milestone for new crypto ETFs, signaling potential market entry and increased accessibility.
Reviewed under editorial standardsUpdated September 26, 2026Not investment advice