The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Nielsen Ulrik B. since 2012.
This trader's CIK number is 1531962.
At the time of last reporting, Nielsen Ulrik B. was the Director of Merrimack Pharmaceuticals Inc. (stock ticker symbol MACK).
Also see all insider trading activities at Merrimack Pharmaceuticals Inc.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2022 | MACK | 14,287 | $60,634 | 0 | $0 | 0 | $0 |
| 2017 | MACK | 0 | $0 | 29,452 | $422,764 | 29,452 | $388,766 |
| 2015 | MACK | 0 | $0 | 220,000 | $2,668,999 | 220,000 | $458,999 |
| 2014 | MACK | 0 | $0 | 105,000 | $841,050 | 155,000 | $217,900 |
| 2013 | MACK | 0 | $0 | 10,483 | $56,566 | 10,483 | $22,957 |
| 2012 | MACK | 0 | $0 | 75,000 | $552,750 | 4,368 | $9,565 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2022-01-24 | MACK | Buy | 14,287 | 4.24 | 60,634 |
| 2017-09-14 | MACK | Option Ex | 100 | 13.20 | 1,320 |
| 2017-09-15 | MACK | Option Ex | 7,796 | 13.20 | 102,907 |
| 2017-09-14 | MACK | Sale | 100 | 14.20 | 1,420 |
| 2017-09-15 | MACK | Sale | 7,796 | 14.23 | 110,937 |
| 2017-09-11 | MACK | Option Ex | 14,756 | 13.20 | 194,779 |
| 2017-09-13 | MACK | Sale | 6,800 | 14.27 | 97,036 |
| 2017-09-13 | MACK | Option Ex | 6,800 | 13.20 | 89,760 |
| 2017-09-11 | MACK | Sale | 14,756 | 14.46 | 213,371 |
| 2015-07-20 | MACK | Option Ex | 20,000 | 2.59 | 51,800 |
| 2015-07-20 | MACK | Sale | 20,000 | 10.71 | 214,200 |
| 2015-06-19 | MACK | Option Ex | 40,000 | 2.53 | 101,199 |
| 2015-06-19 | MACK | Sale | 40,000 | 12.02 | 480,800 |
| 2015-05-19 | MACK | Option Ex | 40,000 | 2.47 | 98,800 |
| 2015-05-19 | MACK | Sale | 40,000 | 13.04 | 521,599 |
| 2015-04-20 | MACK | Sale | 40,000 | 12.88 | 515,200 |
| 2015-04-20 | MACK | Option Ex | 40,000 | 1.76 | 70,400 |
| 2015-03-19 | MACK | Option Ex | 40,000 | 1.71 | 68,400 |
| 2015-03-19 | MACK | Sale | 40,000 | 11.97 | 478,800 |
| 2015-03-04 | MACK | Option Ex | 20,000 | 1.71 | 34,200 |
| 2015-03-04 | MACK | Sale | 20,000 | 12.01 | 240,200 |
| 2015-02-23 | MACK | Sale | 20,000 | 10.91 | 218,200 |
| 2015-02-23 | MACK | Option Ex | 20,000 | 1.71 | 34,200 |
| 2014-08-26 | MACK | Option Ex | 50,000 | 1.25 | 62,500 |
| 2014-05-27 | MACK | Sale | 105,000 | 8.01 | 841,050 |
| 2014-05-27 | MACK | Option Ex | 105,000 | 1.48 | 155,400 |
| 2013-04-24 | MACK | Option Ex | 10,483 | 2.19 | 22,957 |
| 2013-04-24 | MACK | Sale | 10,483 | 5.40 | 56,566 |
| 2012-12-03 | MACK | Sale | 75,000 | 7.37 | 552,750 |
| 2012-07-16 | MACK | Option Ex | 4,368 | 2.19 | 9,565 |
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 Nielsen Ulrik B. (Director of Merrimack Pharmaceuticals Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.