Introduction

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

Security Title Latest Reported Holdings
US:AMT / American Tower Corporation Director 2,858
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 E Sharbutt. 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 E Sharbutt 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
2023-03-14 2023-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 1,072 2,858 60.02
2022-03-14 2022-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 881 1,786 97.35
2021-09-08 2021-09-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -739 905 -44.95 300.71 -222,225 272,143
2021-08-25 2021-08-23 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -2,400 454 -84.09
2021-08-25 2021-08-23 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -2,400 1,644 -59.35 290.00 -696,000 476,760
2021-08-25 2021-08-23 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 2,400 4,044 145.99 81.18 194,832 328,292
2021-03-12 2021-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 881 1,644 115.47
2020-09-16 2020-09-14 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -973 763 -56.05 255.27 -248,378 194,771
2020-06-17 2020-06-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -900 1,736 -34.14 258.92 -233,028 449,485
2020-03-12 2020-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 739 2,636 38.96
2020-03-02 2020-02-27 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -2,200 2,854 -43.53
2020-03-02 2020-02-27 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -2,200 1,897 -53.70 243.60 -535,920 462,109
2020-03-02 2020-02-27 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 2,200 4,097 115.97 81.18 178,596 332,594
2019-08-12 2019-08-08 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -2,039 0 -100.00
2019-08-12 2019-08-08 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -2,039 1,897 -51.80 217.59 -443,666 412,768
2019-08-12 2019-08-08 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 2,039 3,936 107.49 76.90 156,799 302,678
2019-05-20 2019-05-16 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -1,200 2,039 -37.05
2019-05-20 2019-05-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -1,200 1,897 -38.75 202.46 -242,952 384,067
2019-05-20 2019-05-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 1,200 3,097 63.26 76.90 92,280 238,159
2019-05-10 2019-05-08 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -2,035 1,897 -51.75 192.15 -391,025 364,509
2019-03-12 2019-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 973 3,932 32.88
2019-03-05 2019-03-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -1,009 2,959 -25.43 174.49 -176,060 516,316
2018-11-16 2018-11-14 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -813 3,968 -17.00 160.88 -130,795 638,372
2018-11-09 2018-11-07 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -3,590 0 -100.00
2018-11-09 2018-11-07 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -3,590 4,781 -42.89 157.06 -563,845 750,904
2018-11-09 2018-11-07 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 3,590 8,371 75.09 62.00 222,580 519,002
2018-08-07 2018-08-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -1,321 4,781 -21.65 150.48 -198,784 719,445
2018-03-13 2018-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 1,241 6,102 25.53
2017-12-15 2017-12-13 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -1,584 4,861 -24.58 144.44 -228,793 702,123
2017-05-22 2017-05-18 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -3,653 0 -100.00
2017-05-22 2017-05-18 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -3,653 6,445 -36.18 128.61 -469,812 828,891
2017-05-22 2017-05-18 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 3,653 10,098 56.68 50.78 185,499 512,776
2017-05-09 2017-05-05 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -4,167 0 -100.00
2017-05-09 2017-05-05 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -4,167 6,445 -39.27 127.77 -532,418 823,478
2017-05-09 2017-05-05 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 4,167 10,612 64.65 43.11 179,639 457,483
2017-03-14 2017-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 1,321 6,445 25.78
2016-06-09 2016-06-07 4 AMT AMERICAN TOWER CORP /MA/
Option to purchase common stock
M - Exercise -5,000 0 -100.00
2016-06-09 2016-06-07 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -5,000 5,124 -49.39 108.14 -540,700 554,109
2016-06-09 2016-06-07 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,000 10,124 97.58 37.70 188,500 381,675
2016-05-24 2016-05-23 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 0 -100.00
2016-05-24 2016-05-23 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -10,000 5,124 -66.12 104.35 -1,043,500 534,689
2016-05-24 2016-05-23 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 15,124 195.16 37.52 375,200 567,452
2016-03-14 2016-03-11 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -12,500 0 -100.00
2016-03-14 2016-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -12,500 5,124 -70.93 95.78 -1,197,250 490,777
2016-03-14 2016-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 12,500 17,624 243.95 35.72 446,500 629,529
2016-03-14 2016-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 1,584 5,124 44.75
2015-03-12 2015-03-10 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 4,971 4,971
2015-03-12 2015-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 794 3,540 28.91
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 5,054 5,054
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 924 2,746 50.71
2013-03-13 2013-03-11 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 3,239 3,239
2013-03-13 2013-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 813 1,822 80.57
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 3,590 3,590
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -7,152 0 -100.00
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -12,500 12,500 -50.00
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 1,009 1,099 1,121.11
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -6,313 0 -100.00 62.12 -392,164
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -19,652 6,313 -75.69 62.05 -1,219,407 391,722
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 7,152 25,965 38.02 28.39 203,045 737,146
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 12,500 18,813 198.00 35.72 446,500 672,000
2010-03-12 2010-03-10 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Class A Common Stock
A - Award 4,167 4,167
2010-03-12 2010-03-10 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
A - Award 1,450 5,082 39.92
2006-09-05 2006-09-01 4 AMT AMERICAN TOWER CORP /MA/
Option to purchase Class A Common Stock
A - Award 25,000 25,000
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)