Why insider trading matters?

Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.

- Peter Lynch
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
2021-01-20 Rousseau Raphael nan Sell 30,000 $20.04 $601,269 Yes
2021-01-19 Yelensky Roman nan Sell 10,000 $22.10 $221,029 No
2020-12-30 Woiwode Thomas Director Buy 1,347,709 $3.71 $5,000,000 No
2019-08-21 Rousseau Raphael See Remarks Sell 10,000 $10.76 $107,631 Yes
2018-09-28 Simon Nicholas 10%-Owner, Director Buy 333,333 $15.00 $4,999,995 Yes
2018-09-28 Clarus Lifesciences III, L.P. 10%-Owner Buy 333,333 $15.00 $4,999,995 Yes

Insider Smart

SYSCO CORP (SYY) - PELTZ NELSON and Frank Joshua D are insiders of SYSCO CORP, check their transactions to see how they sell high and buy low. Would that be more persuasive than just buy or sell?

Insider Smart

Enphase Energy, Inc (ENPH) - ENPH was $10+ in 15Q1 then dropped to $2 and eventually went under $1. From 15Q4 to 17Q4 it built a 2-year-long base then BOOM! Stock went as high as $70 and likely will make a new high. Catch one or two moves like this you can retire early. One hint before the big move was that CEO and CFO were constantly accumulating, this kind of information is priceless.