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
Palantir Technologies Inc. (PLTR)

Trade Date Insider Title Buy/Sell #Shares Price Value Option
2021-02-22 Sankar Shyam nan Sell 300,000 $30.00 $9,000,000 Yes
2021-02-23 Sankar Shyam nan Sell 757,510 $28.34 $21,469,008 Yes
2020-11-27 Sankar Shyam nan Sell 80,305 $31.39 $2,520,774 No
2020-11-24 Sankar Shyam nan Sell 743,344 $20.06 $14,910,620 Yes
2020-11-17 Sankar Shyam nan Sell 1,000,000 $15.98 $15,983,704 No
2020-09-30 Sankar Shyam Chief Operating Officer & EVP Sell 1,405,715 $10.12 $14,219,087 Yes

Insider Smart

VBI Vaccines Inc (VBIV) - Since 10%-owner Perceptive Advisor LCC increased their holding in April, the stock have double the price. Impressive!