- Corporate Officers - W
- Walt David R
Insider Trading History of Walt David R
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Walt David R since 2015.
This trader's CIK number is 1205236.
At the time of last reporting, Walt David R was the Officer of Quanterix Corp. (stock ticker symbol QTRX).
Also see all insider trading activities at Quanterix Corp.
Note that in the past
WALT DAVID R also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Dare Bioscience, Inc. (CERU) by Walt David R
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2016 | CERU | 122,295 | $297,333 | 0 | $0 | 0 | $0 |
| 2015 | CERU | 27,491 | $95,145 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Illumina, Inc. (ILMN) by Walt David R
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2016 | ILMN | 0 | $0 | 8,000 | $1,278,080 | 8,000 | $106,400 |
| 2015 | ILMN | 0 | $0 | 263,000 | $53,751,141 | 16,000 | $99,600 |
Yearly summary of insider trading at Exicure, Inc. (XCUR) by Walt David R
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2020 | XCUR | 291,066 | $352,771 | 0 | $0 | 0 | $0 |
| 2019 | XCUR | 1,000,000 | $2,000,000 | 0 | $0 | 0 | $0 |
| 2017 | XCUR | 268,333 | $804,999 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Quanterix Corp (QTRX) by Walt David R
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | QTRX | 370,000 | $2,118,759 | 0 | $0 | 0 | $0 |
| 2024 | QTRX | 47,000 | $624,630 | 0 | $0 | 0 | $0 |
| 2022 | QTRX | 150,000 | $1,293,450 | 0 | $0 | 0 | $0 |
| 2020 | QTRX | 54,064 | $900,922 | 0 | $0 | 0 | $0 |
| 2017 | QTRX | 200,000 | $3,000,000 | 0 | $0 | 0 | $0 |
Insider trading activities at 4 companies by Walt David R:
1. Dare Bioscience, Inc. (CERU)
2. Illumina, Inc. (ILMN)
3. Exicure, Inc. (XCUR)
4. Quanterix Corp (QTRX)
Table 1. Insider trading of Dare Bioscience, Inc. (CERU) by Walt David R
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2016-02-19 | CERU | Buy | 1,700 | 2.08 | 3,529 |
| 2016-02-22 | CERU | Buy | 591 | 2.09 | 1,234 |
| 2016-02-18 | CERU | Buy | 4,500 | 2.09 | 9,400 |
| 2016-02-17 | CERU | Buy | 4,460 | 2.12 | 9,441 |
| 2016-02-12 | CERU | Buy | 4,311 | 2.00 | 8,630 |
| 2016-02-16 | CERU | Buy | 4,500 | 2.00 | 9,013 |
| 2016-02-08 | CERU | Buy | 4,500 | 2.21 | 9,967 |
| 2016-02-09 | CERU | Buy | 4,500 | 2.08 | 9,346 |
| 2016-02-04 | CERU | Buy | 4,063 | 2.31 | 9,381 |
| 2016-02-05 | CERU | Buy | 4,500 | 2.29 | 10,327 |
| 2016-02-03 | CERU | Buy | 4,018 | 2.27 | 9,132 |
| 2016-02-02 | CERU | Buy | 4,395 | 2.37 | 10,407 |
| 2016-02-01 | CERU | Buy | 4,500 | 2.37 | 10,665 |
| 2016-01-29 | CERU | Buy | 1,200 | 2.40 | 2,885 |
| 2016-01-27 | CERU | Buy | 4,500 | 2.47 | 11,115 |
| 2016-01-28 | CERU | Buy | 4,500 | 2.45 | 11,016 |
| 2016-01-26 | CERU | Buy | 4,300 | 2.44 | 10,509 |
| 2016-01-25 | CERU | Buy | 4,500 | 2.35 | 10,566 |
| 2016-01-22 | CERU | Buy | 4,500 | 2.24 | 10,093 |
| 2016-01-21 | CERU | Buy | 4,500 | 2.32 | 10,426 |
| 2016-01-19 | CERU | Buy | 4,400 | 2.52 | 11,074 |
| 2016-01-20 | CERU | Buy | 4,500 | 2.35 | 10,584 |
| 2016-01-15 | CERU | Buy | 4,172 | 2.42 | 10,083 |
| 2016-01-14 | CERU | Buy | 4,400 | 2.64 | 11,629 |
| 2016-01-12 | CERU | Buy | 4,300 | 2.89 | 12,414 |
| 2016-01-13 | CERU | Buy | 4,384 | 2.69 | 11,792 |
| 2016-01-06 | CERU | Buy | 4,500 | 3.03 | 13,639 |
| 2016-01-07 | CERU | Buy | 4,300 | 2.87 | 12,345 |
| 2016-01-04 | CERU | Buy | 4,500 | 3.00 | 13,522 |
| 2016-01-05 | CERU | Buy | 4,301 | 3.06 | 13,169 |
| 2015-12-03 | CERU | Buy | 10,000 | 3.75 | 37,490 |
| 2015-11-30 | CERU | Buy | 5,374 | 3.25 | 17,460 |
| 2015-11-27 | CERU | Buy | 6,700 | 3.28 | 21,962 |
| 2015-11-25 | CERU | Buy | 5,417 | 3.37 | 18,233 |
Table 2. Insider trading of Illumina, Inc. (ILMN) by Walt David R
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2016-04-07 | ILMN | Option Ex | 4,000 | 13.30 | 53,200 |
| 2016-04-07 | ILMN | Sale | 4,000 | 169.70 | 678,812 |
| 2016-03-15 | ILMN | Sale | 4,000 | 149.82 | 599,268 |
| 2016-03-15 | ILMN | Option Ex | 4,000 | 13.30 | 53,200 |
| 2015-11-10 | ILMN | Sale | 2,000 | 154.27 | 308,538 |
| 2015-09-29 | ILMN | Sale | 2,000 | 171.20 | 342,406 |
| 2015-09-15 | ILMN | Sale | 2,000 | 206.41 | 412,820 |
| 2015-09-01 | ILMN | Sale | 2,000 | 194.41 | 388,826 |
| 2015-08-18 | ILMN | Sale | 2,000 | 207.00 | 414,002 |
| 2015-08-11 | ILMN | Sale | 5,497 | 209.56 | 1,151,978 |
| 2015-08-04 | ILMN | Sale | 12,000 | 215.07 | 2,580,804 |
| 2015-07-28 | ILMN | Sale | 10,000 | 217.10 | 2,171,050 |
| 2015-07-21 | ILMN | Sale | 12,000 | 235.53 | 2,826,348 |
| 2015-07-14 | ILMN | Sale | 10,000 | 226.69 | 2,266,890 |
| 2015-07-07 | ILMN | Sale | 12,000 | 220.14 | 2,641,632 |
| 2015-06-30 | ILMN | Sale | 10,000 | 217.86 | 2,178,610 |
| 2015-06-23 | ILMN | Sale | 12,000 | 220.21 | 2,642,508 |
| 2015-06-16 | ILMN | Sale | 10,000 | 214.98 | 2,149,780 |
| 2015-06-09 | ILMN | Sale | 12,000 | 212.46 | 2,549,520 |
| 2015-06-02 | ILMN | Sale | 10,000 | 204.61 | 2,046,120 |
| 2015-05-26 | ILMN | Sale | 12,000 | 204.72 | 2,456,664 |
| 2015-05-19 | ILMN | Sale | 10,000 | 201.58 | 2,015,820 |
| 2015-05-12 | ILMN | Sale | 7,000 | 196.36 | 1,374,520 |
| 2015-05-05 | ILMN | Sale | 5,000 | 186.75 | 933,725 |
| 2015-04-28 | ILMN | Sale | 7,000 | 183.15 | 1,282,071 |
| 2015-04-21 | ILMN | Sale | 10,000 | 196.82 | 1,968,240 |
| 2015-04-14 | ILMN | Sale | 7,000 | 188.38 | 1,318,695 |
| 2015-04-07 | ILMN | Sale | 5,000 | 184.75 | 923,735 |
| 2015-03-31 | ILMN | Sale | 7,000 | 186.18 | 1,303,253 |
| 2015-03-24 | ILMN | Sale | 5,000 | 192.65 | 963,225 |
| 2015-03-17 | ILMN | Sale | 7,000 | 193.24 | 1,352,652 |
| 2015-03-03 | ILMN | Sale | 7,000 | 193.72 | 1,356,075 |
| 2015-02-24 | ILMN | Sale | 9,503 | 199.42 | 1,895,116 |
| 2015-02-17 | ILMN | Sale | 7,000 | 197.68 | 1,383,774 |
| 2015-02-10 | ILMN | Sale | 5,000 | 193.44 | 967,180 |
| 2015-02-03 | ILMN | Sale | 7,000 | 190.51 | 1,333,570 |
| 2015-01-27 | ILMN | Option Ex | 4,000 | 6.22 | 24,900 |
| 2015-01-27 | ILMN | Sale | 4,000 | 201.64 | 806,576 |
| 2015-01-20 | ILMN | Sale | 6,000 | 193.43 | 1,160,604 |
| 2015-01-20 | ILMN | Option Ex | 4,000 | 6.22 | 24,900 |
| 2015-01-13 | ILMN | Option Ex | 4,000 | 6.22 | 24,900 |
| 2015-01-13 | ILMN | Sale | 4,000 | 187.19 | 748,752 |
| 2015-01-06 | ILMN | Sale | 6,000 | 189.18 | 1,135,062 |
| 2015-01-06 | ILMN | Option Ex | 4,000 | 6.22 | 24,900 |
Table 3. Insider trading of Exicure, Inc. (XCUR) by Walt David R
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2020-03-13 | XCUR | Buy | 291,066 | 1.21 | 352,771 |
| 2019-08-02 | XCUR | Buy | 1,000,000 | 2.00 | 2,000,000 |
| 2017-09-26 | XCUR | Buy | 268,333 | 3.00 | 804,999 |
Table 4. Insider trading of Quanterix Corp (QTRX) by Walt David R
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-06-12 | QTRX | Buy | 36,010 | 6.22 | 224,162 |
| 2025-06-13 | QTRX | Buy | 123,990 | 6.14 | 760,802 |
| 2025-06-06 | QTRX | Buy | 131,869 | 5.43 | 716,576 |
| 2025-06-09 | QTRX | Buy | 78,131 | 5.34 | 417,219 |
| 2024-08-20 | QTRX | Buy | 47,000 | 13.29 | 624,630 |
| 2022-08-10 | QTRX | Buy | 150,000 | 8.62 | 1,293,450 |
| 2020-03-13 | QTRX | Buy | 54,064 | 16.66 | 900,922 |
| 2017-12-11 | QTRX | Buy | 200,000 | 15.00 | 3,000,000 |
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 Walt David R
(Officer of Quanterix Corp at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.