It could be to test the share at different levels by just buying...

It could be to test the share at different levels by just buying or selling 10 shares at a time with fairly wild price point swings given we have just had a CR. Is someone trying to probe for any "hidden limit orders" so that they can buy/sell close to the hidden order price? Or are they trying to trigger some automated trading engine into action?

With trades actually going through multiple times for small amounts it could also be a VWAP strategy where the trader is feeding small volumes into the market as part of a larger trade trying to minimize average cost. It could be probing but without seeing the orders and any cancels would be lightning fast and difficult to tell.

It's a big complex topic but suffice to say it's happening with regularity, so happening for a reason not just random, all will be revealed I guess, just not in the time frame we would like.