Home > Insider Trading > Filing (0001338678-11-000041)

Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1053507	American Tower Corp	AMT	Communications Services, Nec (4899)	650723837

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1220905	H William Hess	116 Huntington Avenue Boston MA 02116	Evp, Int'l. Operations	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Class A Common Stock	Disposition	2011-11-09	8,500	$0.00	5,814	No	5	G	Direct
Class A Common Stock	Acquisiton	2011-12-01	28,723	$37.52	34,537	No	4	M	Direct
Class A Common Stock	Acquisiton	2011-12-01	10,938	$37.70	45,475	No	4	M	Direct
Class A Common Stock	Disposition	2011-12-01	39,661	$58.75	5,814	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	5	G	Direct
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Class A Common Stock	Option to Purchase Class A Common Stock	Disposition	2011-12-01	28,723	$0.00	28,723	$37.52
Class A Common Stock	Option to Purchase Class A Common Stock	Disposition	2011-12-01	10,938	$0.00	10,938	$37.70

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
2,645		2017-03-15	No	4	M	Direct
21,875		2018-03-17	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Class A Common Stock	5,095	Indirect	By GRATs

Footnotes

Gift of Class A Common Stock to various charitable organizations through a donor advised fund.
Includes 489 shares acquired under the Company's employee stock purchase plan in May 2011. 2,678 shares were previously reported as directly owned, but were contributed to a grantor retained annuity trust ("GRAT") on October 29, 2010. 1,245 shares were returned to the reporting person's direct beneficial ownership on November 9, 2011 in the form of a scheduled annuity payment under the terms of the GRAT.
The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $58.39 to $59.39 per share.
This option was granted pursuant to the 2007 Equity Incentive Plan, and is exercisable in 25% cumulative annual increments beginning March 15, 2008.
This option was granted pursuant to the 2007 Equity Incentive Plan, and is exercisable in 25% cumulative annual increments beginning March 17, 2009.