How Long Does The SEC Subpoena Process Take?

A supplemental request for production will typically have a similar time frame as the initial request – a few weeks to a month. A date for testimony will typically be scheduled within a similar timeframe, if the Commission chooses option 2. Option 3 can be a bit of a wild card, since you do not know what the Commission is considering and how they view you, but usually is a good sign.
Ultimately, if you are the target of an investigation, the whole investigatory process can take years, whether you choose to settle or fight. However, the period of time when you will be responding to the subpoena is typically a matter of a few months, whether you are a target or simply a witness.