SGX also publishes a list of insider trades weekly. This is free on their website. My view is that buy trades are more significant as nobody buys except in hope of a future gain on their investment
But sale trades can be for reasons that have nothing to do with the company's current or future financial situation. For example the seller may have to comply with investment restrictions being breached such as the holding exceeding a set limit due to price appreciation of the share. Or...

No forex risk mah!

I keep the bulk of my investments in home currency ( for me, SGD ) blue chip dividend aristocrats. The remainder 15% is used for trading in the US mkts where price swings are sharp and swift esp in growth and concept stocks. I try to scalp those experiencing rapid price action. Unfortunately because I value my sleep, I am occasionally not nimble enough and end up nursing mistimed investments. Sometimes for longer than expected. And tying up my trading funds. But that i...