Samme L. Thompson - Feb 26, 2024 Form 4 Insider Report for AMERICAN TOWER CORP /MA/ (AMT)

Role
Director
Signature
/s/ Marina A. Breed, as attorney-in-fact
Stock symbol
AMT
Transactions as of
Feb 26, 2024
Transactions value $
-$275,555
Form type
4
Date filed
2/28/2024, 04:13 PM
Previous filing
Mar 14, 2023
Next filing
Mar 5, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMT Common Stock Options Exercise $205K +2.53K +10.91% $81.18 25.7K Feb 26, 2024 Direct
transaction AMT Common Stock Sale -$228K -1.2K -4.67% $189.61 24.5K Feb 26, 2024 Direct F1, F2
transaction AMT Common Stock Sale -$253K -1.33K -5.42% $190.78 23.2K Feb 26, 2024 Direct F1, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMT Option to Purchase Common Stock Options Exercise $0 -2.53K -50% $0.00 2.53K Feb 26, 2024 Common Stock 2.53K $81.18 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 27, 2023.
F2 Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $189.31 to $190.18 per share.
F3 Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $190.50 to $191.14 per share.
F4 This option was granted pursuant to the 2007 Equity Incentive Plan, as amended.