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
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
2010-02-02 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 35,494 $75.63 $2,684,574 No
2010-02-01 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 12,000 $76.02 $912,290 No
2010-01-29 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 44,000 $76.04 $3,345,572 No
2010-01-28 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 69,000 $72.87 $5,027,802 No
2010-01-27 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 46,000 $71.42 $3,285,122 No
2010-01-26 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 62,400 $68.70 $4,286,866 No
2010-01-25 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 20,000 $69.71 $1,394,200 No
2010-01-22 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 20,000 $71.10 $1,422,088 No
2010-01-21 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 45,600 $72.15 $3,290,049 No
2010-01-20 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 2,200 $3431.91 $7,550,201 No
2010-01-19 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 690 $3311.19 $2,284,721 No
2010-01-19 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 710 $3298.03 $2,341,601 No
2010-01-15 BILL & MELINDA GATES FOUNDATION TRUST 10%-Owner Sell 200 $3277.50 $655,500 No

Insider Smart

Axsome Therapeutics, Inc (AXSM) - AXSM shows the power of an #allgreen stock, no insider selling, great management great company, if you follow the insiders last year and pick up around $25, the 52 week high is $100+.