Why insider trading matters?

Numerous studies have examined whether there is evidence that U.S. insiders systematically trade on private information despite the legal deterrence. The consensus appears to be that insider purchases (but not sales) tend to be followed by positive abnormal stock price performance, particularly for small growth stocks.

- Prof. B. Espen Eckbo, Dartmouth College
Gritstone Oncology, Inc. (GRTS)
Sector: Healthcare; Industry: Biotechnology

Gritstone Oncology, Inc., an immuno-oncology company, engages in developing tumor-specific cancer immunotherapies to fight various cancer types.


Trade Date Insider Title Buy/Sell #Shares Price Value Option
2021-01-19 Yelensky Roman nan Sell 10,000 $22.10 $221,029 No

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