A NO vote is highly risky imo, but a spike could take place, irrational exuberance. I think conservative worst case nobody wants to take this technology forward, simply can't be ruled out, where is the future revenue projection, there really isn't one.
That leaves it is rationally a play on FDA approval. The technology could always be pretty terrible on commercial revenue or assessed that way, but FDA approval will spike for sure. Due to dilution target price of 20 to 30 cents down the line, but ever so iffy, just the joy of companies like this. Delcath is without question a poster child for showing all the upside and downside of big time speculation.
I am coming around to if you leave out the vote, future, etc.. the most attractive style would be to buy on a down day on the stock and sell after hours.