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SEC order mandating activist investors to disclose their clients may jolt hedge funds
- IBJ Bureau
- Jul 11, 2026
Activist investors in the US must disclose the identities of their clients in regulatory filings, the Securities and Exchange Commission (SEC) has said.
The capital market regulator’s decision may rattle hedge funds by requesting information that they have long fought to keep secret.
The updated interpretations on 13D filings and proxy statements, issued by the main US securities regulator, had not been expected and have not been widely reported, according to lawyers who work on investor activism.
The SEC’s new guidance on its corporate finance interpretations clarifies how the agency views its rules on critical filings after a busy six months of activist campaigns.
The regulator has not responded to a request for comment on the changes or said what has prompted it to issue the interpretation now.
The changes signal increased interest in transparency about what investors pushing for boardroom changes or other matters must say about their clients, the legal advisers have said.
The changes come as special purpose vehicles called ‘sidecars’ are increasingly used to finance activist campaigns.
“The identities of the investors in an entity formed for the purpose of acquiring securities of a specific issuer and engaging in an activism campaign at that issuer must be disclosed,” the SEC has written in answer to Question 110.09.
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