Is it stock manipulation? 450 shares to drop the

Is it stock manipulation? 450 shares to drop the price. Has the co scorned someone so bad and can that person be found out? Is it the same whistle blower fraud the co encountered in the past? Do brokers have the responsibility to report unusal account activity? This has been going on for years and almost a daily event. Perhaps the SEC should look into this. IDK. I for one am sick of it. I have to much time and money invested to let some depraived puke attempt to ruin the co. Something needs done. IMO My monday rant.