I think once official approval is communicated to the company, there would have to be a quiet period until the PR is released. Then any conditional, pre-negotiated contracts, awaiting approval could get their final reviews and go about for final signatures. But my guess is, even though some contracts may be pre-negotiated, the terms such as pricing and duration are probably not locked down because they would be dependent on the final labeling assigned to DCVax.
So bada-bing-bada-boom, post-approval, may come in the form of a scheduled conference call with investors, to give updates and plans for commercialization, Franchise/partners, etc. But I would count on anyone dressing up like the Sopranos and using that catch-phrase LOL.