Introduction

This page provides a comprehensive analysis of the known insider trading history of William H Hess. 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 William H Hess has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:AMT / American Tower Corporation 60,793
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by William H Hess. 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 William H Hess 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
2019-07-02 2019-06-18 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
G - Gift -1,220 60,793 -1.97
2019-05-08 2019-05-06 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -3,200 59,463 -5.11 193.16 -618,112 11,485,873
2019-05-08 2019-05-06 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -9,568 62,663 -13.25 192.41 -1,840,979 12,056,988
2019-03-14 2019-03-13 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -20,000 72,231 -21.68 186.97 -3,739,400 13,505,030
2019-03-14 2019-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -1,289 92,231 -1.38 185.75 -239,432 17,131,908
2019-03-12 2019-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -23,554 93,520 -20.12 181.61 -4,277,642 16,984,167
2019-03-01 2019-02-27 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 46,500 117,074 65.89
2019-02-12 2017-08-29 5 AMT AMERICAN TOWER CORP /MA/
Common Stock
G - Gift -7,000 70,574 -9.02
2018-03-13 2018-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale -28,291 76,286 -27.05 145.28 -4,110,116 11,082,830
2018-03-13 2018-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 11,856 104,577 12.79
2018-03-13 2018-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -13,060 92,721 -12.35 143.58 -1,875,155 13,312,881
2018-03-01 2018-02-27 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 6,468 105,781 6.51
2018-02-12 2017-12-26 5 AMT AMERICAN TOWER CORP /MA/
Common Stock
G - Gift -9,950 99,313 -9.11
2017-04-05 2017-04-03 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -72,539 0 -100.00
2017-04-05 2017-04-03 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -17,950 0 -100.00
2017-04-05 2017-04-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -14,657 109,037 -11.85 121.59 -1,782,145 13,257,809
2017-04-05 2017-04-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -75,832 123,694 -38.01 120.84 -9,163,539 14,947,183
2017-04-05 2017-04-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 72,539 199,526 57.12 76.90 5,578,249 15,343,549
2017-04-05 2017-04-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 17,950 126,987 16.46 62.00 1,112,900 7,873,194
2017-03-14 2017-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,004 109,037 -1.80 113.58 -227,614 12,384,422
2017-03-14 2017-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -3,792 111,041 -3.30 113.58 -430,695 12,612,037
2017-03-14 2017-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 14,087 114,833 13.98
2017-03-01 2017-02-27 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 5,539 100,746 5.82
2017-02-13 2016-12-23 5 AMT AMERICAN TOWER CORP /MA/
Common Stock
G - Gift -6,570 95,207 -6.46
2016-03-14 2016-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,231 101,534 -2.15 98.46 -219,664 9,997,038
2016-03-14 2016-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,036 103,765 -1.92 98.46 -200,465 10,216,702
2016-03-14 2016-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,949 105,801 -2.71 94.71 -279,300 10,020,413
2016-03-14 2016-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 15,500 108,750 16.62
2016-03-01 2016-02-26 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 4,617 93,250 5.21
2015-11-18 2015-11-16 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,759 17,950 -37.48
2015-11-18 2015-11-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,218 88,489 -10.35 97.34 -994,620 8,613,519
2015-11-18 2015-11-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -541 98,707 -0.55 96.49 -52,201 9,524,238
2015-11-18 2015-11-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,759 99,248 12.16 62.00 667,058 6,153,376
2015-10-19 2015-10-15 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -2,811 0 -100.00
2015-10-19 2015-10-15 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -7,189 28,709 -20.03
2015-10-19 2015-10-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 88,489 -10.15 93.87 -938,700 8,306,462
2015-10-19 2015-10-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 2,811 98,489 2.94 50.78 142,743 5,001,271
2015-10-19 2015-10-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 7,189 95,678 8.12 62.00 445,718 5,932,036
2015-09-17 2015-09-16 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 2,811 -78.06
2015-09-17 2015-09-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 88,489 -10.15 90.00 -900,000 7,964,010
2015-09-17 2015-09-16 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 98,489 11.30 50.78 507,800 5,001,271
2015-08-18 2015-08-17 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -2,531 12,811 -16.50
2015-08-18 2015-08-17 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -7,469 35,898 -17.22
2015-08-18 2015-08-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -900 88,489 -1.01 101.45 -91,305 8,977,209
2015-08-18 2015-08-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -9,100 89,389 -9.24 101.00 -919,100 9,028,289
2015-08-18 2015-08-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 2,531 98,489 2.64 50.78 128,524 5,001,271
2015-08-18 2015-08-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 7,469 95,958 8.44 62.00 463,078 5,949,396
2015-07-17 2015-07-15 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 43,367 -18.74
2015-07-17 2015-07-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 88,489 -10.15 95.80 -958,000 8,477,246
2015-07-17 2015-07-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 98,489 11.30 62.00 620,000 6,106,318
2015-06-17 2015-06-15 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 53,367 -15.78
2015-06-17 2015-06-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 88,489 -10.15 92.32 -923,200 8,169,304
2015-06-17 2015-06-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 98,489 11.30 62.00 620,000 6,106,318
2015-06-01 2015-05-28 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -8,431 63,367 -11.74
2015-06-01 2015-05-28 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -21,569 15,342 -58.44
2015-06-01 2015-05-28 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -30,000 88,325 -25.35 94.30 -2,829,000 8,329,048
2015-06-01 2015-05-28 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 8,431 118,325 7.67 62.00 522,722 7,336,150
2015-06-01 2015-05-28 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 21,569 109,894 24.42 50.78 1,095,274 5,580,417
2015-03-13 2015-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,280 93,365 -2.38 96.27 -219,496 8,988,249
2015-03-12 2015-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,081 90,605 -2.25 94.63 -196,925 8,573,951
2015-03-12 2015-03-10 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 121,604 121,604
2015-03-12 2015-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -4,502 92,686 -4.63 94.57 -425,754 8,765,315
2015-03-12 2015-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
A - Award 9,702 97,188 11.09
2015-02-13 2014-12-16 5 AMT AMERICAN TOWER CORP /MA/
Common Stock
G - Gift -10,000 38,873 -20.46
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -30,000 0 -100.00
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -25,543 0 -100.00
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -24,457 36,911 -39.85
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -5,478 47,445 -10.35 91.04 -498,717 4,319,393
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -74,522 52,923 -58.47 90.41 -6,737,534 4,784,768
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 30,000 127,445 30.79 43.11 1,293,300 5,494,154
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 25,543 97,445 35.52 28.39 725,166 2,766,464
2014-07-11 2014-07-09 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 24,457 71,902 51.55 50.78 1,241,926 3,651,184
2014-03-13 2014-03-12 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,041 10,080 -33.34
2014-03-13 2014-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,311 47,253 -4.66 80.84 -186,821 3,819,933
2014-03-13 2014-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,041 49,564 11.32
2014-03-12 2014-03-11 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -4,552 13,654 -25.00
2014-03-12 2014-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,114 44,523 -4.53 81.70 -172,714 3,637,529
2014-03-12 2014-03-11 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 4,552 46,637 10.82
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
A - Award 19,710 19,710
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 107,817 107,817
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,169 5,169 -50.00
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,219 0 -100.00
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,438 42,085 -5.48 81.18 -197,917 3,416,460
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,169 44,523 13.13
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -1,838 39,354 -4.46 81.18 -149,209 3,194,758
2014-03-12 2014-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,219 41,192 14.51
2013-08-16 2013-08-15 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
P - Purchase 2,500 35,791 7.51 68.99 172,475 2,469,221
2013-03-14 2013-03-12 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,041 15,121 -25.00
2013-03-14 2013-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,348 33,105 -6.62 76.03 -178,518 2,516,973
2013-03-14 2013-03-12 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,041 35,453 16.58
2013-03-13 2013-03-11 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
A - Award 18,206 18,206
2013-03-13 2013-03-11 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 72,539 72,539
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,170 10,338 -33.34
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,219 5,219 -50.00
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -7,863 0 -100.00
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,441 30,412 -7.43 77.14 -188,299 2,345,982
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,170 32,853 18.68
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,464 27,683 -8.17 77.14 -190,073 2,135,467
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,219 30,147 20.94
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -3,712 24,928 -12.96 77.14 -286,344 1,922,946
2013-03-12 2013-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 7,863 28,640 37.84
2013-03-05 2013-03-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 30,000 -25.00
2013-03-05 2013-03-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 20,777 -32.49 77.83 -778,300 1,617,074
2013-03-05 2013-03-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 30,777 48.13 43.11 431,100 1,326,796
2013-02-05 2013-02-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 40,000 -20.00
2013-02-05 2013-02-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 20,777 -32.49 76.88 -768,800 1,597,336
2013-02-05 2013-02-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 30,777 48.13 43.11 431,100 1,326,796
2013-01-02 2013-01-02 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 50,000 -16.67
2013-01-02 2013-01-02 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 20,777 -32.49 78.53 -785,300 1,631,618
2013-01-02 2013-01-02 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 30,777 48.13 43.11 431,100 1,326,796
2012-12-05 2012-12-03 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase
M - Exercise -10,000 0 -100.00
2012-12-05 2012-12-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 20,777 -32.49 74.79 -747,900 1,553,912
2012-12-05 2012-12-03 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 30,777 48.13 37.70 377,000 1,160,293
2012-11-02 2012-11-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 10,000 -50.00
2012-11-02 2012-11-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -1,000 20,777 -4.59 75.41 -75,410 1,566,794
2012-11-02 2012-11-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -9,000 21,777 -29.24 75.01 -675,090 1,633,493
2012-11-02 2012-11-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 30,777 48.13 37.70 377,000 1,160,293
2012-10-03 2012-10-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -1,875 20,000 -8.57
2012-10-03 2012-10-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -8,125 25,543 -24.13
2012-10-03 2012-10-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -3,100 20,777 -12.98 72.02 -223,262 1,496,360
2012-10-03 2012-10-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -6,900 23,877 -22.42 71.19 -491,211 1,699,804
2012-10-03 2012-10-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 1,875 30,777 6.49 37.70 70,688 1,160,293
2012-10-03 2012-10-01 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 8,125 28,902 39.11 28.39 230,669 820,528
2012-09-18 2012-09-17 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -10,000 33,668 -22.90
2012-09-18 2012-09-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -10,000 20,777 -32.49 71.32 -713,200 1,481,816
2012-09-18 2012-09-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 10,000 30,777 48.13 28.39 283,900 873,759
2012-09-06 2012-09-05 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -7,418 43,668 -14.52
2012-09-06 2012-09-05 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
S - Sale X -13,212 20,777 -38.87 70.68 -933,824 1,468,518
2012-09-06 2012-09-05 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 7,418 33,989 27.92 28.39 210,597 964,948
2012-03-20 2012-03-17 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -6,250 0 -100.00
2012-03-20 2012-03-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,610 26,571 -8.94 63.34 -165,317 1,683,007
2012-03-20 2012-03-17 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 6,250 29,181 27.26
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
A - Award 20,162 20,162
2012-03-14 2012-03-12 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
A - Award 71,798 71,798
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,170 15,508 -25.00
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -5,219 10,438 -33.33
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Restricted Stock Units
M - Exercise -7,864 7,863 -50.00
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,159 22,931 -8.61 62.22 -134,333 1,426,767
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,170 25,090 25.95
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,179 19,920 -9.86 62.22 -135,577 1,239,422
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 5,219 22,099 30.92
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
F - Taxes -2,617 16,880 -13.42 62.22 -162,830 1,050,274
2012-03-13 2012-03-10 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 7,864 19,497 67.60
2012-02-28 2012-02-24 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -2,665 0 -100.00
2012-02-28 2012-02-24 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Common Stock
M - Exercise -3,174 0 -100.00
2012-02-28 2012-02-24 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 2,665 11,633 29.72 37.52 99,991 436,470
2012-02-28 2012-02-24 4 AMT AMERICAN TOWER CORP /MA/
Common Stock
M - Exercise 3,174 8,968 54.78 31.50 99,981 282,492
2009-05-04 2009-05-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Class A Common Stock
M - Exercise -5,509 121,486 -4.34
2009-05-04 2009-05-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
M - Exercise 5,509 27,302 25.28 18.15 99,988 495,531
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Class A Common Stock
M - Exercise -25,000 50,000 -33.33
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Class A Common Stock
M - Exercise -24,997 25,003 -49.99
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Option to Purchase Class A Common Stock
A - Award 175,000 175,000
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -500 32,674 -1.51 31.77 -15,885 1,038,053
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -400 33,174 -1.19 31.75 -12,700 1,053,274
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -500 33,574 -1.47 31.70 -15,850 1,064,296
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -1,100 34,074 -3.13 31.65 -34,815 1,078,442
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -300 35,174 -0.85 31.63 -9,489 1,112,554
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -7,000 35,474 -16.48 31.59 -221,130 1,120,624
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -19,100 42,474 -31.02 31.57 -602,987 1,340,904
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -5,700 61,574 -8.47 31.56 -179,892 1,943,275
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -5,900 67,274 -8.06 31.55 -186,145 2,122,495
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -9,400 73,174 -11.38 31.54 -296,476 2,307,908
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -14,683 82,574 -15.10 31.53 -462,955 2,603,558
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -10,800 97,257 -9.99 31.52 -340,416 3,065,541
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -9,600 108,057 -8.16 31.51 -302,496 3,404,876
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -3,200 117,657 -2.65 31.50 -100,800 3,706,196
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -1,100 120,857 -0.90 31.46 -34,606 3,802,161
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -9,700 121,957 -7.37 31.45 -305,065 3,835,548
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -700 131,657 -0.53 31.44 -22,008 4,139,296
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -3,700 132,357 -2.72 31.43 -116,291 4,159,981
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -5,400 136,057 -3.82 31.42 -169,668 4,274,911
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -3,000 141,457 -2.08 31.41 -94,230 4,443,164
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -15,600 144,457 -9.75 31.40 -489,840 4,535,950
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -400 160,057 -0.25 31.34 -12,536 5,016,186
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -9,900 160,457 -5.81 31.32 -310,068 5,025,513
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -2,500 170,357 -1.45 31.31 -78,275 5,333,878
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -13,200 172,857 -7.09 31.30 -413,160 5,410,424
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -500 186,057 -0.27 31.27 -15,635 5,818,002
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -900 186,557 -0.48 31.26 -28,134 5,831,772
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale X -22,600 187,457 -10.76 31.25 -706,250 5,858,031
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
M - Exercise 25,000 210,057 13.51 10.50 262,500 2,205,598
2006-03-02 2006-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
M - Exercise 24,997 185,057 15.62 1.55 38,745 286,838
2004-03-02 2004-03-01 4 AMT AMERICAN TOWER CORP /MA/
Option to purchase Class A Common Stock
M - Exercise -25,000 75,000 -25.00
2004-03-02 2004-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale -25,000 150 -99.40 11.10 -277,500 1,665
2004-03-02 2004-03-01 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
M - Exercise 25,000 25,150 16,666.67 1.55 38,750 38,982
2004-03-02 2004-02-27 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale -3,400 0 -100.00 11.20 -38,080
2004-03-02 2004-02-27 4 AMT AMERICAN TOWER CORP /MA/
Class A Common Stock
S - Sale -7,600 3,400 -69.09 11.10 -84,360 37,740
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)