Why insider trading matters?

If management teams do not own any relevant stakes in the companies they guide, they may not be focused on creating wealth for shareholders to the same degree, compared to those that see their personal wealth increase when share prices rise.

- Klaus Gugler, Economist
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
2021-12-01 Jones Erin Chief Operating Officer Sell 1,000 $13.01 $13,010 Yes
2021-11-01 Jones Erin Chief Operating Officer Sell 1,000 $11.14 $11,140 Yes
2021-10-04 Jones Erin nan Sell 2,000 $10.70 $21,390 Yes
2021-09-08 Jones Erin nan Sell 2,000 $11.37 $22,748 Yes
2021-11-01 Jones Erin nan Sell 1,000 $11.14 $11,140 Yes
2021-10-04 Jones Erin nan Sell 2,000 $10.70 $21,390 Yes
2021-05-27 Rousseau Raphael nan Sell 2,900 $9.00 $26,112 Yes
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

SERVICE CORP INTERNATIONAL (SCI) - WALTRIP W BLAIR, Director of $SCI made a buy at 34.65, was he convinced the bottom of the box is a strong support? Well, seems he is not wrong.