John K Clarke has an estimated net worth of $5.08 Million. This is based on reported shares across multiple companies, which include ALNYLAM PHARMACEUTICALS INC, VISICU INC, Sirtris Pharmaceuticals, Inc., Verastem, Inc., aTYR PHARMA INC, MOMENTA PHARMACEUTICALS INC, CUBIST PHARMACEUTICALS INC, and ATHENAHEALTH INC.

2005 was John K Clarke's most active year for acquiring shares with 8 total transactions. John K Clarke's most active month to acquire stocks was the month of May. 2014 was John K Clarke's most active year for disposing of shares, totalling 7 transactions. John K Clarke's most active month to dispose stocks was the month of April. 2018 saw John K Clarke paying a total of $409,200.00 for 44,000 shares, this is the most they've acquired in one year. In 2014 John K Clarke cashed out on 70,000 shares for a total of $1,882,978.90, their largest year based on trade value.