They probably don't have the required information to make that big announcement yet however Monday - Tuesday could be totally different. Bluebird could make a updated announcement, test results roll in or perhaps even a acceptable offer - deal on Canon, we simply don't know.
In the meantime I personal think that the directors are being very reasonable in buying a hand full more after all posters here suggest that they could and they haven't been that aggressive.
SAU Price at posting:
28.5¢ Sentiment: Buy Disclosure: Held