InsiderTrades

Form 4 for AMT American Tower

Accepted 2026-02-19 00:00:00 ET · period of report 2026-02-17 · accession 0001807541-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
DM 2026-02-19 2026-02-17 AMT Smith Rodney M EVP, CFO, Treas S - Sale+OE $192.09 -34.3K 74.3K -32% -$6.60M
D 2026-02-19 2026-02-17 AMT Smith Rodney M EVP, CFO, Treas M - OptEx $94.71 +34.3K 108.7K +46% +$3.25M
D 2026-02-19 2026-02-17 AMT Smith Rodney M EVP, CFO, Treas M - OptEx $0.00 -34.3K 0 -100% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-02-17 S D 2,086 $190.35 106,569 D — — (F3) Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $189.93 to $190.88 per share.
2 Common Common Stock 2026-02-17 M A 34,341 $94.71 108,655 D — — (F1) Includes 93 and 26 shares acquired under the issuer's employee stock purchase plan in May 2025 and in November 2025, respectively.
3 Common Common Stock 2026-02-17 S D 9,596 $191.52 96,973 D — — (F4) Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $191.06 to $192.00 per share.
4 Common Common Stock 2026-02-17 S D 22,658 $192.49 74,315 D — — (F5) Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $192.13 to $193.00 per share.
5 Common Common Stock 2026-02-17 S D 1 $193.13 74,314 D — —
6 Derivative Option to Purchase Common Stock 2026-02-17 M D 34,341 $0.00 0 D $94.71 · — to 2026-03-10 34,341 Common Stock (F6) This option was granted pursuant to the 2007 Equity Incentive Plan, as amended, and is exercisable in 25% cumulative annual increments beginning March 10, 2017.