The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Mikolajczyk Michael E since 2005.
This trader's CIK number is 1224360.
At the time of last reporting, Mikolajczyk Michael E was the Officer of Rubicon Technology, Inc.. (stock ticker symbol RBCN).
Also see all insider trading activities at Rubicon Technology, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2010 | DTPI | 0 | $0 | 20,000 | $204,060 | 0 | $0 |
| 2008 | DTPI | 46,762 | $223,588 | 82 | $922 | 0 | $0 |
| 2007 | DTPI | 0 | $0 | 52,248 | $740,311 | 0 | $0 |
| 2006 | DTPI | 0 | $0 | 30,000 | $344,915 | 15,417 | $156,575 |
| 2005 | DTPI | 0 | $0 | 10,000 | $150,050 | 0 | $0 |
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2022 | RBCN | 0 | $0 | 31,851 | $637,020 | 0 | $0 |
| 2015 | RBCN | 80,000 | $95,613 | 0 | $0 | 0 | $0 |
| 2010 | RBCN | 0 | $0 | 20,000 | $568,200 | 23,653 | $199,867 |
| 2008 | RBCN | 0 | $0 | 0 | $0 | 10,961 | $54,147 |
1. Diamondcluster International Inc (DTPI)
2. Rubicon Technology, Inc. (RBCN)
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2010-06-02 | DTPI | Sale | 20,000 | 10.20 | 204,060 |
| 2008-11-13 | DTPI | Buy | 15,000 | 3.94 | 59,130 |
| 2008-09-30 | DTPI | Buy | 10,000 | 4.62 | 46,160 |
| 2008-09-23 | DTPI | Buy | 20,000 | 5.13 | 102,540 |
| 2007-12-06 | DTPI | Buy | 575 | 7.45 | 4,284 |
| 2006-12-08 | DTPI | Buy | 306 | 11.75 | 3,595 |
| 2006-09-15 | DTPI | Sale | 16 | 9.70 | 155 |
| 2007-04-24 | DTPI | Sale | 25 | 12.27 | 306 |
| 2007-12-06 | DTPI | Buy | 575 | 7.45 | 4,284 |
| 2006-12-08 | DTPI | Buy | 306 | 11.75 | 3,595 |
| 2006-09-15 | DTPI | Sale | 16 | 9.70 | 155 |
| 2007-04-24 | DTPI | Sale | 25 | 12.27 | 306 |
| 2007-05-11 | DTPI | Sale | 15,000 | 13.00 | 195,030 |
| 2007-02-20 | DTPI | Sale | 22,248 | 15.03 | 334,276 |
| 2007-02-06 | DTPI | Sale | 15,000 | 14.07 | 211,005 |
| 2006-12-12 | DTPI | Sale | 7,500 | 12.01 | 90,075 |
| 2006-11-16 | DTPI | Sale | 7,500 | 12.00 | 90,000 |
| 2006-11-15 | DTPI | Option Ex | 15,417 | 10.16 | 156,575 |
| 2006-11-15 | DTPI | Sale | 5,000 | 12.00 | 60,000 |
| 2006-11-07 | DTPI | Sale | 5,000 | 10.97 | 54,840 |
| 2006-09-21 | DTPI | Sale | 5,000 | 10.00 | 50,000 |
| 2005-06-16 | DTPI | Sale | 10,000 | 15.01 | 150,050 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2022-08-19 | RBCN | Sale | 31,851 | 20.00 | 637,020 |
| 2015-12-30 | RBCN | Buy | 41,300 | 1.20 | 49,560 |
| 2015-12-31 | RBCN | Buy | 38,700 | 1.19 | 46,053 |
| 2010-06-21 | RBCN | Sale | 20,000 | 28.41 | 568,200 |
| 2010-06-15 | RBCN | Option Ex | 23,653 | 8.45 | 199,867 |
| 2008-04-16 | RBCN | Option Ex | 10,961 | 4.94 | 54,147 |
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 Mikolajczyk Michael E (Officer of Rubicon Technology, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.