InsiderPulse
Dashboard

AMT

American Tower Corporation

Real EstateS&P 500

American Tower Corporation insider trading

American Tower Corporation files with the SEC as a Real Estate Investment Trusts company headquartered in Boston, MA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent AMT insider transactions

5 insiders traded AMT on the open market between Feb 27, 2026 and Aug 21, 2026 — 2 purchases worth $995.7K, 15 sales worth $16.6M, of which 13 were pre-scheduled under a 10b5-1 plan.

Bought
$995.7K
Sold
$16.6M

13 of 15 on a 10b5-1 plan

Net
−$15.6M
Insiders
5

Open-market purchases (code P) and sales (code S) from American Tower Corporation's own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 22, 2026. The live dashboard shows new filings the moment they clear.

Every AMT Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

AMT insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 12 insiders traded AMT on the open market: 2 purchases worth $1.5M and 40 sales worth $56M, 31 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 2 purchases ($1.5M) and 17 sales ($22.2M), by 8 insiders.

QuarterBoughtSold
Q2 2026—−$173.1K2 sales · all on a plan
Q1 2026+$494.9K1 buy−$21.9M14 sales · 13 on a plan
Q4 2025+$994.1K1 buy—
Q3 2025—−$150K1 sale
Q2 2025——
Q1 2025—−$9.2M8 sales · 4 on a plan
Q4 2024——
Q3 2024—−$24.7M15 sales · 12 on a plan
Largest purchase
+$994.1K of AMT by Reilly Eugene F (Director) on Oct 31, 2025.
Largest sale
−$8M of AMT by Noel Eugene M (EVP & President, U.S. Tower) on Sep 10, 2024, under a 10b5-1 plan.

Open-market transactions through Jun 30, 2026most recent first

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$4.4M

    Feb 17, 2026

    22,658 sh · $192.49

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$1.8M

    Feb 17, 2026

    9,596 sh · $191.52

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$397.1K

    Feb 17, 2026

    2,086 sh · $190.35

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$193

    Feb 17, 2026

    1.00 sh · $193.13

  • Reilly Eugene F

    Director

    +$994.1K

    Oct 31, 2025

    5,554 sh · $178.99

  • Font Juan

    SVP, Pres. & CEO, CoreSite

    −$150K

    Jul 31, 2025

    720 sh · $208.33

  • Goel Sanjay

    EVP & President, Asia-Pacific

    −$863.7K

    Mar 17, 2025

    4,000 sh · $215.92

  • Meyer Robert Joseph JR

    SVP & Chief Accounting Officer

    −$594.2K

    Feb 27, 2025

    2,939 sh · $202.18

  • Reeve Pamela D A

    Director

    −$1M

    Feb 26, 2025

    4,971 sh · $202.97

  • Meyer Robert Joseph JR

    SVP & Chief Accounting Officer

    −$547.9K

    Feb 26, 2025

    2,724 sh · $201.12

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$2.9M

    Feb 13, 2025

    15,051 sh · $189.64

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$288.7K

    Feb 13, 2025

    1,517 sh · $190.34

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$2.6M

    Jan 16, 2025

    14,291 sh · $181.03

  • Smith Rodney M10b5-1

    EVP, CFO & Treasurer

    −$413.3K

    Jan 16, 2025

    2,276 sh · $181.57

  • Goel Sanjay

    EVP & President, Asia-Pacific

    −$1.2M

    Sep 13, 2024

    5,000 sh · $238.00

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

American Tower Corporation company record

SEC industry classification
Real Estate Investment Trusts
Headquarters
Boston, MA
Incorporated in
DE
Listed on
NYSE
SEC Central Index Key
0001053507
Previously filed as
AMERICAN TOWER SYSTEMS CORP

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Real Estate sector shown above.

After insiders bought AMT

What the stock actually did in the 90 days following each open-market purchase

Don't check AMT — let it ping you

Get told the moment an insider moves on AMT

Pro watches American Tower Corporation for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add AMT to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track AMT on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read AMT insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

Other Real Estate tickers

EQIXCCIPSASPGOWELLDLRVICIAVBVMRKINVHMAA
This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are AMT insiders buying or selling?
Between Feb 27, 2026 and Aug 21, 2026, 5 American Tower Corporation insiders made 2 open-market purchases worth $995.7K and 15 sales worth $16.6M, a net sale of $15.6M. 13 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much AMT stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 12 American Tower Corporation insiders made 2 open-market purchases worth $1.5M and 40 sales worth $56M. 31 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: 2 purchases ($1.5M) and 17 sales ($22.2M). The largest purchase was Reilly Eugene F buying $994.1K on Oct 31, 2025. The largest sale was Noel Eugene M selling $8M on Sep 10, 2024.
What was the largest recent AMT insider trade?
Noel Eugene M (EVP & Chief Operating Officer) sold $4.1M of AMT stock on Mar 02, 2026 at about $191.40 a share, under a pre-scheduled 10b5-1 plan.
When did an insider last buy AMT shares?
The most recent open-market purchase on file is Kalathur Rajesh (Director) buying $500.7K on Aug 21, 2026.
Where does AMT insider trading data come from?
From the Form 4 filings American Tower Corporation's officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

Get the free Insider Brief

Each weekday evening: the day's biggest open-market insider buys, cluster formations and 10b5-1 plan breaks — in plain English, with grants and routine vesting stripped out. Honest about what the data can and cannot say.

No account needed. One-click unsubscribe.