Insider Stock Trading History of Sonsini Peter W.


The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Sonsini Peter W. since year 2005. The trader's CIK number is 1559807. At the time of this reporting, Sonsini Peter W. is the 10% Owner of Mersana Therapeutics, Inc. . (stock ticker symbol MRSN). See this page for all insider trading activities at Mersana Therapeutics, Inc. .

Note that in the past Sonsini Peter W. also reported insider trading activities as an insider of the following companies:
Stock purchases, sales, and option exercises reported by insider Sonsini Peter W. since 2005.
  Trade Date   Symbol Company Name (Issuer) Trade Type     Shares       Price ($)   Value ($)
2017-07-03 MRSN Mersana Therapeutics, Inc. Buy 1,000,000 15.00 15,000,000
2017-03-28 AVEO Aveo Pharmaceuticals Inc Buy 6,000,000 .50 3,000,000
2017-03-27 ADAP Adaptimmune Therapeutics Plc Buy 12,870,000 .70 9,009,000
2016-12-19 AKAO Achaogen Inc Buy 500,000 13.50 6,750,000
2016-12-19 AKAO Achaogen Inc Buy 500,000 13.50 6,750,000
2016-11-29 TCON Tracon Pharmaceuticals, Inc. Buy 869,565 5.75 4,999,998
2016-07-29 ILIU Interleukin Genetics Inc Buy 20,120,724 .10 1,991,951
2016-07-18 ARDX Ardelyx, Inc. Buy 1,527,301 8.73 13,333,337
2016-01-13 ARDX Ardelyx, Inc. Buy 1,000,000 10.00 10,000,000
2015-10-06 MIRN Mirna Therapeutics, Inc. Buy 857,142 7.00 5,999,994
2015-02-04 TCON Tracon Pharmaceuticals, Inc. Buy 500,000 10.00 5,000,000
2014-12-23 ILIU Interleukin Genetics Inc Buy 19,868,965 .10 1,986,896
2014-08-06 LOXO Loxo Oncology, Inc. Buy 230,769 13.00 2,999,997

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Sonsini Peter W. (10% Owner of Mersana Therapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.