Introduction

This page provides a comprehensive analysis of the known insider trading history of David A Twardock. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate David A Twardock has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:BXP / Boston Properties, Inc. Director 10,399
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by David A Twardock. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Trading History

This table shows the complete list of insider trades made by David A Twardock as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2022-05-31 2022-05-26 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
A - Award 1,504 10,399 16.91 0.01 15 104
2022-04-01 2022-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 252 30,380 0.84 128.80 32,500 3,912,886
2022-01-04 2021-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 282 29,869 0.95 115.18 32,500 3,440,296
2021-10-04 2021-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 300 29,334 1.03 108.35 32,500 3,178,310
2021-07-01 2021-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 284 28,793 0.99 114.59 32,487 3,299,435
2021-06-01 2021-05-27 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
A - Award 1,285 8,895 16.89
2021-04-02 2021-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 321 28,257 1.15 101.26 32,500 2,861,267
2021-01-05 2020-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 344 27,641 1.26 94.53 32,500 2,612,903
2020-10-02 2020-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 405 26,933 1.53 80.30 32,500 2,162,693
2020-07-01 2020-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 359 26,239 1.39 90.38 32,483 2,371,508
2020-06-01 2020-05-28 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
A - Award 1,709 7,610 28.96
2020-04-02 2020-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 352 25,622 1.39 92.23 32,500 2,363,073
2020-02-06 2020-02-06 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
S - Sale -2,063 5,901 -25.90 144.88 -298,887 854,937
2020-02-06 2020-02-06 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
S - Sale -3,010 7,964 -27.43 145.07 -436,661 1,155,337
2020-01-03 2019-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 236 25,098 0.95 137.86 32,500 3,459,990
2019-10-02 2019-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 251 24,691 1.03 129.66 32,501 3,201,452
2019-07-02 2019-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 251 24,267 1.04 129.00 32,366 3,130,452
2019-05-30 2019-05-29 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
A - Award 1,140 10,974 11.59
2019-04-02 2019-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 244 23,852 1.03 133.88 32,625 3,193,241
2019-01-02 2018-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 263 23,437 1.14 112.55 29,625 2,637,852
2018-10-01 2018-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 241 22,993 1.06 123.09 29,625 2,830,216
2018-07-02 2018-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 212 22,593 0.95 125.42 26,614 2,833,554
2018-06-04 2018-05-31 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
A - Award 1,047 9,834 11.92
2018-04-02 2018-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 277 22,236 1.26 123.22 34,125 2,739,873
2018-01-02 2017-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 251 21,814 1.16 130.03 32,625 2,836,504
2017-10-03 2017-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 241 21,431 1.14 122.88 29,625 2,633,403
2017-07-05 2017-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 229 21,059 1.10 123.02 28,115 2,590,674
2017-06-01 2017-05-31 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
A - Award 1,050 8,787 13.57
2017-04-04 2017-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 246 20,708 1.20 132.41 32,624 2,741,913
2017-02-07 2016-06-06 5 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
G - Gift -925 7,737 -10.68
2017-01-04 2016-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 259 20,344 1.29 125.78 32,625 2,558,897
2016-11-01 2016-10-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 108 20,085 0.54 120.48 12,985 2,419,823
2016-10-04 2016-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 206 19,977 1.04 136.29 28,125 2,722,675
2016-08-01 2016-07-29 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 90 19,771 0.46 142.13 12,793 2,810,011
2016-07-05 2016-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 191 19,681 0.98 131.90 25,156 2,595,884
2016-05-26 2016-05-24 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
A - Award 1,013 8,662 13.24
2016-05-02 2016-04-29 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 98 19,490 0.50 128.86 12,605 2,511,479
2016-04-04 2016-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 245 19,392 1.28 127.08 31,124 2,464,356
2016-02-01 2016-01-28 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 310 19,147 1.65 115.44 35,791 2,210,357
2016-01-04 2015-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 229 18,837 1.23 127.54 29,250 2,402,496
2015-11-02 2015-10-30 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 96 18,608 0.52 125.85 12,033 2,341,799
2015-10-01 2015-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 209 18,512 1.14 118.40 24,750 2,191,850
2015-08-03 2015-07-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 96 18,303 0.53 123.28 11,835 2,256,420
2015-07-01 2015-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 192 18,207 1.07 121.04 23,241 2,203,801
2015-05-28 2015-05-27 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
A - Award 910 7,649 13.50
2015-05-14 2015-05-14 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
S - Sale -1,800 6,739 -21.08 132.68 -238,824 894,131
2015-05-14 2015-05-14 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
S - Sale -280 8,539 -3.17 132.69 -37,153 1,133,040
2015-05-04 2015-04-30 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 88 18,015 0.49 132.31 11,653 2,383,591
2015-04-02 2015-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 219 17,927 1.24 140.48 30,750 2,518,403
2015-01-29 2015-01-28 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 616 17,708 3.60 142.98 88,027 2,531,924
2015-01-29 2014-12-12 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $0.01
G - Gift -1,125 8,819 -11.31
2015-01-05 2014-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 216 17,093 1.28 128.69 27,749 2,199,644
2014-11-03 2014-10-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 86 16,877 0.51 126.75 10,914 2,139,153
2014-10-01 2014-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 240 16,791 1.45 115.76 27,750 1,943,708
2014-08-04 2014-07-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 90 16,551 0.54 119.45 10,700 1,977,031
2014-07-01 2014-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 209 16,462 1.29 118.18 24,740 1,945,425
2014-05-29 2014-05-28 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
A - Award 1,005 9,944 11.24
2014-05-01 2014-04-30 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 90 16,252 0.55 117.14 10,505 1,903,783
2014-04-01 2014-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 242 16,163 1.52 114.53 27,749 1,851,093
2014-01-30 2014-01-29 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 425 15,920 2.74 105.80 44,936 1,684,360
2014-01-02 2013-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 321 15,496 2.12 100.37 32,250 1,555,283
2013-11-04 2013-10-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 95 15,174 0.63 103.50 9,801 1,570,529
2013-10-01 2013-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 246 15,079 1.66 106.90 26,250 1,611,997
2013-08-01 2013-07-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 90 14,834 0.61 106.95 9,584 1,586,489
2013-07-01 2013-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 263 14,744 1.82 105.47 27,739 1,555,083
2013-05-30 2013-05-29 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
A - Award 1,095 8,939 13.96
2013-05-01 2013-04-30 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 86 14,481 0.59 109.43 9,357 1,584,691
2013-04-02 2013-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 319 14,396 2.27 101.06 32,250 1,454,841
2013-01-30 2013-01-29 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 84 14,077 0.60 108.85 9,096 1,532,248
2013-01-02 2012-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 276 13,993 2.02 105.81 29,250 1,480,613
2012-11-02 2012-10-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 71 13,717 0.52 106.30 7,506 1,458,084
2012-10-02 2012-09-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 319 13,646 2.39 110.61 35,250 1,509,393
2012-08-02 2012-07-31 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 66 13,313 0.50 110.90 7,286 1,476,465
2012-07-02 2012-06-30 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 201 13,248 1.54 108.37 21,742 1,435,662
2012-05-24 2012-05-22 4 BXP BOSTON PROPERTIES INC
Common Stock, par value $.01
A - Award 823 7,844 11.72
2012-05-02 2012-04-30 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 66 13,062 0.51 108.25 7,148 1,413,910
2012-04-03 2012-03-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 364 12,995 2.88 104.99 38,250 1,364,396
2012-01-30 2012-01-27 4 BXP BOSTON PROPERTIES INC
Dividend Equivalent Rights
A - Award 66 12,631 0.53 104.24 6,911 1,316,673
2012-01-04 2011-12-31 4 BXP BOSTON PROPERTIES INC
Phantom Stock Units
A - Award 384 12,565 3.15 99.60 38,250 1,251,461
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)