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
BERKSHIRE HATHAWAY INC (BRKB)


Trade Date Insider Title Buy/Sell #Shares Price Value Option
2021-05-04 Jain Ajit Vice Chairman Sell 7,852 $278.19 $2,184,348 No
2020-12-18 OLSON RONALD L Director Buy 4,000 $222.33 $889,335 No
2020-09-30 Jain Ajit Vice Chairman Sell 7,000 $213.00 $1,491,000 No
2020-07-01 Jain Ajit Vice Chairman Sell 5,600 $177.74 $995,316 Yes
2020-05-18 WITMER MERYL B Director Buy 1,008 $2243.37 $2,261,321 No
2018-11-07 Jain Ajit Vice Chairman Sell 5,700 $219.69 $1,252,233 No
2018-05-10 Jain Ajit Vice Chairman Buy 6,000 $199.82 $1,198,920 No
2016-01-05 WITMER MERYL B Director Buy 1,000 $129.85 $129,850 No
2014-12-19 OLSON RONALD L Director Sell 65 $152.07 $9,885 No
2012-12-18 OLSON RONALD L Director Buy 2,500 $90.00 $225,000 Yes
2011-08-08 KEOUGH DONALD R /NY Director Buy 8 $105416.00 $843,328 No
2011-06-22 KEOUGH DONALD R /NY Director Buy 22 $113334.00 $2,493,348 No
2010-05-04 BURKE STEPHEN B Director Buy 6 $115599.92 $693,600 No
2010-02-26 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 41,400 $79.62 $3,296,127 No
2010-02-25 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 36,384 $79.17 $2,880,598 No
2010-02-24 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 40,000 $79.64 $3,185,544 No
2010-02-23 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 35,000 $79.75 $2,791,310 No
2010-02-22 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 32,000 $79.73 $2,551,408 No
2010-02-19 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 66,000 $77.91 $5,142,208 No
2010-02-18 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 46,000 $76.32 $3,510,646 No
2010-02-17 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 27,500 $76.06 $2,091,730 No
2010-02-16 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 20,000 $75.95 $1,518,980 No
2010-02-12 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 93,000 $77.02 $7,162,556 No
2010-02-11 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 107,000 $75.44 $8,071,574 No
2010-02-10 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 21,802 $74.48 $1,623,710 No
2010-02-09 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 40,100 $74.41 $2,983,693 No
2010-02-08 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 50,000 $73.91 $3,695,591 No
2010-02-05 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 50,000 $72.46 $3,622,802 No
2010-02-04 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 32,820 $72.72 $2,386,734 No
2010-02-03 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 23,000 $74.51 $1,713,827 No

Insider Smart

Enphase Energy, Inc (ENPH) - Watch for CEO Kothandaraman Badrinarayanan and CFO Branderiz Eric, their trading have a good pattern you can't miss, very well timed buy low and sell high.

Insider Smart

Upwork Inc (UPWK) - GRETSCH GREGORY C. Director of Upwork, made a bulk buy of 500K shares right before the big gap up, which is also the largest buy of the past 12 months.