I don't think it's safe to infer other holders will sell because one happened to.
However, that Ironbridge has more knowledge of the business than any other shareholder is safe to infer, and if they're buying (at a premium), it may suggest positive news is ahead.
All we as minority holders can do is trust that BVA's directors are alive to their duty to all shareholders, not only majority ones.
There could be a good trade in there for someone stepping up and amassing a blocking stake.
I only have a small parcel but certainly won't be selling in any great hurry.
BVA Price at posting:
24.0¢ Sentiment: Buy Disclosure: Held