Why insider trading matters?

When insiders buy shares on the open market, this can thus be regarded as a strong endorsement by those that know the company the best -- they are literally betting their own money on the company's future. Insider selling, however, is not necessarily meaningful in any way, as there is a range of reasons for insiders to liquidate (some) of the shares they own.

- Seeking Alpha
DoorDash Inc (DASH)

Trade Date Insider Title Buy/Sell #Shares Price Value Option
2021-10-27 SVF Fast (Cayman) Ltd 10%-Owner Sell 10,000,000 $202.81 $2,028,150,000 No
2021-05-19 SVF Fast (Cayman) Ltd 10%-Owner Sell 8,000,000 $132.25 $1,058,000,000 No

Insider Smart

Edesa Biotech, Inc. (EDSA) - President and CEO bought shares of EDSA in late May around $3, two weeks after their purchase, the stock jump to $9, very well timed buy.

Insider Smart

Delta Airlines (DAL) - From an insider's perspective: airlines are the first ones to go under due to the pandemic. A lot of concerns were raised on possible bankruptcy especially amid by the dump from Buffett. However, insiders of Delta were bold enough to buy when Buffett was fear. And Delta is the only airline bought by insiders post-Buffett-dump.