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
908 Devices Inc. (MASS)

MASS Symbol Info by TradingView

Trade Date Insider Title Buy/Sell #Shares Price Value Option
2021-11-16 Kenneweg John Vice President, Government Sell 10,000 $30.32 $303,212 Yes
2021-10-18 Kenneweg John Vice President, Government Sell 10,000 $32.22 $322,200 Yes
2021-09-16 Kenneweg John Vice President, Government Sell 10,000 $36.61 $366,100 Yes

Insider Smart

MGM Resorts International (MGM) - If we were to pick one of the easy trade from the crash, it has to be MGM, checkout the impressive insider buying after crash. Do you really need more confidence to pull the trigger? That's the mental edge you need to work against fear.

Insider Smart

Mohawk Group Holdings, Inc. (MWK) - Multiple insiders bought MWK in June around $5, stock moved sideways for a month then made a 60% jump in 10 days. Patience is the key.