Introduction

This page provides a comprehensive analysis of the known insider trading history of David C Gray. 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 C Gray has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:AZTA / Azenta, Inc. Chief Strategy & New Business 74,868
US:GTAT / GT Advanced Technologies Inc Chief Strategy/New Bus.Officer 0
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 C Gray. 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 C Gray 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
2023-11-20 2023-11-17 4 AZTA Azenta, Inc.
Common Stock
D - Sale to Issuer -5,179 74,868 -6.47 54.83 -283,965 4,105,012
2023-11-17 2023-11-16 4 AZTA Azenta, Inc.
Common Stock
A - Award 2,291 80,047 2.95 54.57 125,020 4,368,165
2023-11-17 2023-11-16 4 AZTA Azenta, Inc.
Common Stock
D - Sale to Issuer -2,161 77,756 -2.70 53.81 -116,283 4,184,050
2023-11-17 2023-11-15 4 AZTA Azenta, Inc.
Common Stock
A - Award 2,875 79,917 3.73 54.13 155,624 4,325,907
2023-08-15 2023-08-11 4/A AZTA Azenta, Inc.
Common Stock
S - Sale -10,877 70,610 -13.35 56.03 -609,438 3,956,278
2023-08-15 2023-08-10 4/A AZTA Azenta, Inc.
Common Stock
S - Sale -10,732 81,487 -11.64 57.24 -614,300 4,664,316
2023-08-14 2023-08-11 4 AZTA Azenta, Inc.
Common Stock
S - Sale -10,877 77,042 -12.37 56.03 -609,438 4,316,663
2023-08-14 2023-08-10 4 AZTA Azenta, Inc.
Common Stock
S - Sale -4,311 87,919 -4.67 57.24 -246,762 5,032,484
2022-11-21 2022-11-17 4 AZTA Azenta, Inc.
Common Stock
A - Award 3,148 92,219 3.53
2022-11-17 2022-11-15 4 AZTA Azenta, Inc.
Common Stock
F - Taxes -5,235 89,071 -5.55
2022-11-17 2022-11-15 4 AZTA Azenta, Inc.
Common Stock
A - Award 10,200 94,306 12.13
2021-11-19 2021-11-18 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale X -4,049 84,106 -4.59 118.48 -479,726 9,964,879
2021-11-19 2021-11-17 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -1,163 88,151 -1.30 119.27 -138,711 10,513,770
2021-11-19 2021-11-17 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -6,239 89,318 -6.53 119.27 -744,126 10,652,958
2021-11-17 2021-11-15 4 BRKS Brooks Automation, Inc.
Common Stock
A - Award 1,420 95,557 1.51
2021-11-17 2021-11-15 4 BRKS Brooks Automation, Inc.
Common Stock
A - Award 16,872 94,137 21.84
2020-11-20 2020-11-18 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale X -3,062 77,265 -3.81 68.19 -208,798 5,268,700
2020-11-20 2020-11-18 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -1,516 80,327 -1.85 69.62 -105,544 5,592,366
2020-11-20 2020-11-18 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -4,199 81,843 -4.88 69.62 -292,334 5,697,910
2020-11-17 2020-11-13 4 BRKS Brooks Automation, Inc.
Common Stock
A - Award 1,916 86,042 2.28
2020-11-17 2020-11-13 4 BRKS Brooks Automation, Inc.
Common Stock
A - Award 11,947 84,126 16.55
2020-07-08 2020-07-06 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale X -4,000 72,179 -5.25 45.00 -180,000 3,248,055
2020-06-10 2020-06-08 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -3,196 76,179 -4.03 43.65 -139,505 3,325,213
2020-04-30 2020-04-29 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale X -4,000 79,375 -4.80 42.50 -170,000 3,373,438
2020-02-13 2020-02-12 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -500 83,375 -0.60 43.00 -21,500 3,585,125
2019-11-22 2019-11-21 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -826 83,875 -0.98 43.22 -35,700 3,625,078
2019-11-22 2019-11-20 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -1,927 84,701 -2.22 45.25 -87,197 3,832,720
2019-11-22 2019-11-20 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -23,390 86,628 -21.26 45.25 -1,058,398 3,919,917
2019-11-22 2019-11-15 4 BRKS Brooks Automation, Inc.
Common Stock
A - Award 50,767 110,018 85.68
2019-11-13 2019-11-11 4 BRKS Brooks Automation, Inc.
Common Stock
A - Award 2,792 59,251 4.95
2019-11-12 2019-11-08 4 BRKS Brooks Automation, Inc.
Common Stock
S - Sale -7,500 56,459 -11.73 46.76 -350,700 2,640,023
2018-12-03 2018-11-29 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 5,113 63,959 8.69
2018-11-20 2018-11-19 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -690 58,846 -1.16 27.51 -18,982 1,618,853
2018-11-20 2018-11-16 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -1,946 59,536 -3.17 28.59 -55,636 1,702,134
2018-11-14 2018-11-13 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -10,227 61,482 -14.26 29.04 -296,992 1,785,437
2018-11-14 2018-11-12 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -23,926 71,709 -25.02 30.93 -740,031 2,217,959
2018-11-07 2018-11-06 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -779 95,635 -0.81 31.79 -24,764 3,040,237
2018-11-07 2018-11-06 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 24,265 114,917 26.77
2018-11-07 2018-11-05 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -1,154 90,652 -1.26 31.76 -36,651 2,879,108
2018-03-12 2018-03-09 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -7,000 91,806 -7.08 28.88 -202,160 2,651,357
2017-11-20 2017-11-16 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -1,317 98,806 -1.32 27.13 -35,730 2,680,607
2017-11-13 2017-11-09 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -5,159 100,123 -4.90 28.55 -147,289 2,858,512
2017-11-13 2017-11-08 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 583 105,282 0.56
2017-11-13 2017-11-08 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 3,982 104,699 3.95
2017-11-08 2017-11-06 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -2,394 100,717 -2.32 33.80 -80,917 3,404,235
2016-11-28 2016-11-23 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -10,000 103,111 -8.84 16.45 -164,500 1,696,176
2016-11-21 2016-11-16 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale -15,573 113,111 -12.10 15.35 -239,046 1,736,254
2016-11-14 2016-11-09 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 8,750 128,684 7.30
2016-09-20 2016-09-16 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -6,441 138,834 -4.43 12.74 -82,058 1,768,745
2016-03-18 2016-03-17 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -3,258 145,275 -2.19 9.86 -32,124 1,432,412
2016-03-18 2016-03-17 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -5,331 148,533 -3.46 9.75 -51,977 1,448,197
2016-03-18 2015-09-11 4 BRKS BROOKS AUTOMATION INC
Common Stock
S - Sale X -3,500 153,864 -2.22 10.36 -36,260 1,594,031
2015-11-10 2015-11-06 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 13,675 157,364 9.52
2015-11-10 2015-11-06 4 BRKS BROOKS AUTOMATION INC
Common Stock
F - Taxes -11,737 143,689 -7.55 11.34 -133,098 1,629,433
2015-11-06 2015-11-05 4 BRKS BROOKS AUTOMATION INC
Common Stock
F - Taxes -1,142 155,426 -0.73 11.49 -13,122 1,785,845
2015-11-06 2015-11-04 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 45,000 156,568 40.33
2014-11-10 2014-11-06 4 BRKS BROOKS AUTOMATION INC
Common Stock
F - Taxes -5,432 111,568 -4.64 11.93 -64,804 1,331,006
2014-11-06 2014-11-05 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 42,000 117,000 56.00
2014-07-31 2014-07-29 4 BRKS BROOKS AUTOMATION INC
Common Stock
A - Award 75,000 75,000
2014-07-03 3 BRKS BROOKS AUTOMATION INC
No securities are beneficially owned
0
2013-01-22 2013-01-19 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -27,500 0 -100.00
2013-01-22 2013-01-19 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -10,436 98,533 -9.58 3.15 -32,873 310,379
2013-01-22 2013-01-19 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
M - Exercise 27,500 108,969 33.76
2012-11-13 2012-11-10 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -21,139 42,277 -33.33
2012-11-13 2012-11-10 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -6,711 81,469 -7.61 4.01 -26,911 326,691
2012-11-13 2012-11-10 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $01
M - Exercise 21,139 88,180 31.53
2012-09-04 2012-09-01 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -10,837 10,836 -50.00
2012-09-04 2012-09-01 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -3,440 67,041 -4.88 5.80 -19,952 388,838
2012-09-04 2012-09-01 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $01
M - Exercise 10,837 70,481 18.17
2012-08-14 2012-08-11 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -10,681 21,360 -33.34
2012-08-14 2012-08-11 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -3,391 59,644 -5.38 5.32 -18,040 317,306
2012-08-14 2012-08-11 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
M - Exercise 10,681 63,035 20.40
2012-06-08 2012-06-06 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
A - Award 106,430 106,430
2012-06-05 2012-06-02 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -13,716 41,147 -25.00
2012-06-05 2012-06-02 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -15,510 31,021 -33.33
2012-06-05 2012-06-02 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -4,354 52,354 -7.68 4.05 -17,634 212,034
2012-06-05 2012-06-02 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
M - Exercise 13,716 56,708 31.90
2012-06-05 2012-06-02 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -4,924 42,992 -10.28 4.05 -19,942 174,118
2012-06-05 2012-06-02 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
M - Exercise 15,510 47,916 47.86
2012-01-23 2012-01-20 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
S - Sale X -32,000 32,406 -49.68 8.31 -266,029 269,404
2012-01-23 2012-01-19 4 GTAT GT Advanced Technologies Inc.
Restricted Stock Unit
M - Exercise -27,500 27,500 -50.00
2012-01-23 2012-01-19 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
F - Taxes -9,283 64,406 -12.60 8.37 -77,699 539,078
2012-01-23 2012-01-19 4 GTAT GT Advanced Technologies Inc.
Common Stock, par value $.01
M - Exercise 27,500 73,689 59.54
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)