Fifth Circuit Slams SEC in DeFi Case: Open-Source Code Isn’t a Securities Offer

Fifth Circuit Hands SEC New Crypto Blow

The Fifth Circuit just handed the SEC another loss in crypto, ruling that the agency cannot use a vague enforcement theory to drag a DeFi protocol into court. The decision narrows the SEC’s ability to bring enforcement actions based on broad “ecosystem” arguments and forces the agency to prove actual offers and sales of securities.

The lawsuit began when the SEC sued a decentralized finance protocol for operating an unregistered exchange and selling unregistered securities. The SEC argued that the protocol’s smart contracts, liquidity pools, and marketing materials amounted to a collective offer of investment contracts. The protocol countered that its code was open-source, that no central party raised capital, and that users interacted directly with software, not with any issuer. The district court sided with the SEC, but the Fifth Circuit reversed.

Judges held that the SEC must show a specific offer or sale of a security by a defendant, not merely that a protocol’s code enabled trading. The court rejected the agency’s claim that governance tokens and liquidity incentives were investment contracts simply because they might appreciate. Without evidence that the protocol itself solicited funds in exchange for profit expectations, the SEC could not establish securities violations. The panel also tossed the unregistered-exchange claim, finding that the protocol did not operate a “marketplace” in the traditional sense because no entity took custody or matched orders.

The ruling narrows the SEC’s enforcement toolkit by requiring concrete proof of solicitation and investment of money, rather than inferring a securities offering from the existence of a protocol. It tightens the definition of an issuer and signals that open-source code alone does not create liability.

The decision weakens the SEC’s leverage over DeFi projects and may encourage protocols to structure operations to avoid any appearance of solicitation. Exchanges and traders gain breathing room, but stablecoin issuers and token projects still face classification risk if they actively market returns. The CFTC’s jurisdiction over non-security commodities remains untouched, leaving a split regulatory landscape intact.

Expect more protocols to test the limits of open-source defenses, but the SEC will likely shift focus to intermediaries with clearer marketing footprints.