AMT

NYSE

AMERICAN TOWER CORP /MA/

Latest disclosureOctober 5, 2026

Insider score Why 25?: 25/ 100
Qualifying buys · 30d: $0

1 purchases · 5 sales

Price by TradingView

Insider transactions 9

Limited filing history

Filters

Last 30 daysNo qualifying insider buying. No qualifying insider sales.

Sale disclosed

Robert Joseph Meyer

SVP & Advisor to the CFO

Common Stock

Reported value: $894.45K
Reported price: $178.89 / share

Sale disclosed

Ruth T. Dowling

EVP, Chief Admin Ofr, GC & Sec

Common Stock

Reported value: $116.13K
Reported price: $169.54 / share

Sale disclosed

Ruth T. Dowling

EVP, Chief Admin Ofr, GC & Sec

Common Stock

Reported value: $193.51K
Reported price: $174.96 / share

Sale disclosed

Ruth T. Dowling

EVP, Chief Admin Ofr, GC & Sec

Common Stock

Reported value: $99.23K
Reported price: $178.48 / share

Sale disclosed

Ruth T. Dowling

EVP, Chief Admin Ofr, GC & Sec

Common Stock

Reported value: $73.86K
Reported price: $177.54 / share

Reporting insider	Security / transaction	Amount / price	Value	Traded / disclosed	Source
SVP & Advisor to the CFO	Common StockSale	5,000$178.89 / share	$894.45K	Jul 29Filed Jul 31 · 2d later	SEC filing
EVP, Chief Admin Ofr, GC & Sec	Common StockSale10b5-1	685$169.54 / share	$116.13K	Jul 28Filed Jul 30 · 2d later	SEC filing
EVP, Chief Admin Ofr, GC & Sec	Common StockSale10b5-1	1,106$174.96 / share	$193.51K	Jul 29Filed Jul 30 · 1d later	SEC filing
EVP, Chief Admin Ofr, GC & Sec	Common StockSale10b5-1	556$178.48 / share	$99.23K	Apr 28Filed Apr 30 · 2d later	SEC filing
EVP, Chief Admin Ofr, GC & Sec	Common StockSale10b5-1	416$177.54 / share	$73.86K	Apr 29Filed Apr 30 · 1d later	SEC filing

Congress transactions 3

All Congress filings

Full sale disclosed

American Tower Corporation (REIT) Common Stock · Stock

The filing reports a full sale for the member.

AAAlan ArmstrongReporting Senate member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: March 27, 2026

Sale disclosedAmended report

American Tower Corporation (AMT) · Stock

The filing reports a sale for the member.

Dwight EvansReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: May 11, 2026

Sale disclosed

American Tower Corporation (AMT) · Stock

The filing reports a sale for the member.

Richard Dean Dr McCormick official portrait

Richard Dean Dr McCormickReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: April 17, 2026

Why this buying score?

Qualifying common-equity purchase value

$375,550 of common-equity purchase value after transaction-age decay across 180 days.

+12 pts

Distinct buying groups

1 distinct reporting-owner group(s). Joint rows count once; identity is not proof of discretion.

+5 pts

Material reported holdings increase

At least one row increased reported same-security holdings by 10% or established a new reported position; indirect interests may overlap.

+8 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0001053507
Latest public acceptance: Oct 5, 2026, 08:07 PM UTC
Score calculated: Oct 7, 2026, 12:06 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.

Reporting insider

Security / transaction

Amount / price

Value

Traded / disclosed

Source

SVP & Advisor to the CFO

Common StockSale

5,000$178.89 / share

$894.45K

Jul 29Filed Jul 31 · 2d later

SEC filing

EVP, Chief Admin Ofr, GC & Sec

Common StockSale10b5-1

685$169.54 / share

$116.13K

Jul 28Filed Jul 30 · 2d later

SEC filing

EVP, Chief Admin Ofr, GC & Sec

Common StockSale10b5-1

1,106$174.96 / share

$193.51K

Jul 29Filed Jul 30 · 1d later

SEC filing

EVP, Chief Admin Ofr, GC & Sec

Common StockSale10b5-1

556$178.48 / share

$99.23K

Apr 28Filed Apr 30 · 2d later

SEC filing

EVP, Chief Admin Ofr, GC & Sec

Common StockSale10b5-1

416$177.54 / share

$73.86K

Apr 29Filed Apr 30 · 1d later

SEC filing

Why this buying score?

Qualifying common-equity purchase value

$375,550 of common-equity purchase value after transaction-age decay across 180 days.

+12 pts

Distinct buying groups

1 distinct reporting-owner group(s). Joint rows count once; identity is not proof of discretion.

+5 pts

Material reported holdings increase

At least one row increased reported same-security holdings by 10% or established a new reported position; indirect interests may overlap.

+8 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0001053507
Latest public acceptance: Oct 5, 2026, 08:07 PM UTC
Score calculated: Oct 7, 2026, 12:06 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.