I remember researching information from market regulation services and OSC court rulings about 7 or 8 years ago when another security I owned was being manipulated. If I recall correctly the rules of thumb for determining a trade which could be deemed manipulative (ie. not for investment purposes) were;

1) low volume - check (100 shares)

2) end of day trade - check (3:53pm)

3) security moves in either direction by more than 3% on the trade - check (8 cents/3.5%)

4) trade price is outside of the trading range for the current day - check (previous low for the day was 2.48 if I recall correctly).

If the same rules apply today (?) then whoever made this trade should be getting a call from the regulators - assuming they watching.