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
Sector: Healthcare; Industry: Drug Manufacturers—General

Amgen Inc. discovers, develops, manufactures, and delivers human therapeutics worldwide. It focuses on inflammation, oncology/hematology, bone health, cardiovascular disease, nephrology and neuroscience areas. It also markets other products in various markets, including Nplate, Vectibix, Repatha, Parsabiv, BLINCYTO, Aimovig, NEUPOGEN, Otezla, AMGEVITA, KANJINTI, EVENITY, IMLYGIC, MVASI, and Corlanor. The company has collaboration agreements with Novartis; UCB; Bayer HealthCare LLC; BeiGene, Ltd.; QIAGEN N.V.; and Adaptive Biotechnologies.

Trade Date Insider Title Buy/Sell #Shares Price Value Option
2014-05-21 Dittrich Thomas J.W. VP, Finance & CAO Sell 4,130 $112.83 $465,984 Yes
2013-05-22 Dittrich Thomas J.W. VP, Finance & CAO Sell 6,130 $104.78 $642,296 Yes
2012-07-31 Dittrich Thomas J.W. VP, Finance & CAO Sell 32,150 $82.69 $2,658,387 Yes
2012-01-30 Dittrich Thomas J.W. VP, Finance & CAO Sell 26,150 $68.26 $1,784,931 Yes
2010-12-02 Dittrich Thomas J.W. VP, Finance & CAO Sell 3,500 $53.60 $187,600 No

Insider Smart

Altimmune, Inc. (ALT) - Venrock Healthcare Capital Partners III, L.P., 10%-owner of ALT bought 1.3M shares in late May then added another 1.5M shares in June with an averaged ~$8 per share. 10 days after the accumulation, ALT price jumped to $10.

Insider Smart

Carvana Co (CVNA) - One of the best timed insider buying in the crash is from GARCIA ERNEST C. II 10%-owner of CVNA. Bought at 45 and now with a 100%+ profit.