39% of turnover bought by azz

Since the buyback began on 16/12, by my calculations 39% of all shares sold have been bought back by AZZ. I suspect within 10 days all of the remaining shares which they intended to buy back will have been bought back. I have put together a spreadsheet of AZZ buybacks as a percentage of total turnover:

AZZ trades post buyback start

Most shareholders would be pained to see the share price going down but if AZZ were patient, they could buy shares at significantly lower prices if they pulled their bids. It seems AZZ is in a hurry to see the buyback as finished as soon as possible.