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SEC Form 4 research

AMERICAN TOWER CORP /MA/ insider transactions

Inspect AMERICAN TOWER CORP /MA/'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001053507
Reporting owners
42
Officers and directors
27
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-10-052026-10-01Blanchett PaulA16,299$0Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-01 and its public availability date is 2026-10-05. Subtracting those calendar dates gives 4 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001053507-26-000149 ↗SEC accession 0001053507-26-000139 ↗SEC accession 0001053507-26-000137 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 5 rows, 7 columns

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2026-10-052026-10-01Blanchett PaulA16,299$0Not reported
2026-08-262026-08-21Kalathur RajeshP2,829$177Not reported
2026-08-012026-07-29Meyer Robert JosephS5,000$178.89Not reported
2026-07-312026-07-29Dowling Ruth TS1,106$174.96Not reported
2026-07-312026-07-28Dowling Ruth TS685$169.54Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 30 displayed rows: Officers and directors in the directory

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TAICLET JAMES D JR0001218672318
Meyer Robert Joseph000136388941
Bartlett Thomas A000131504721
Vondran Steven O000174930425
Goel Sanjay00018520586
DiSanto Edmund000139345847
DOLAN RAYMOND P000121876915
REEVE PAMELA D A000103294613
Kalathur Rajesh000155558637
Lara Gustavo000130936121
HORMATS ROBERT D000102961324
Tanner Bruce L000141107511
REED JOANN A000125201322
SHARBUTT DAVID E000117972520
BUA JEAN A000118333331
KATZ CAROLYN000121277613
Dowling Ruth T00019607856
DYKES RONALD M00010269405
Font Juan000173355322
HESS WILLIAM H0001220905226
MACNAB CRAIG000102028028
Marshall Steven C.000141785615
MOSKOWITZ STEVEN J0001218671129
Noel Eugene M00020000705
Puech Olivier000175483365
REILLY EUGENE F000126607615
Sharma Amit000141131319
SINGER BRADLEY E0001159423176
Smith Rodney M000180754129
THOMPSON SAMME L000119759824
TAICLET JAMES D JR ↗Meyer Robert Joseph ↗Bartlett Thomas A ↗Vondran Steven O ↗Goel Sanjay ↗DiSanto Edmund ↗DOLAN RAYMOND P ↗REEVE PAMELA D A ↗Kalathur Rajesh ↗Lara Gustavo ↗HORMATS ROBERT D ↗Tanner Bruce L ↗REED JOANN A ↗SHARBUTT DAVID E ↗BUA JEAN A ↗KATZ CAROLYN ↗Dowling Ruth T ↗DYKES RONALD M ↗Font Juan ↗HESS WILLIAM H ↗MACNAB CRAIG ↗Marshall Steven C. ↗MOSKOWITZ STEVEN J ↗Noel Eugene M ↗Puech Olivier ↗REILLY EUGENE F ↗Sharma Amit ↗SINGER BRADLEY E ↗Smith Rodney M ↗THOMPSON SAMME L ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.