Insider trading

Period: 120 months Stock: AMT Share of holding: 50% or more × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

14 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

14 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

14 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

14 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
14 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
14 decisions over 120 months Remove this filter
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

14 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
21 Aug 2026
Kalathur Rajesh Director
Bought
$500.73K 2,829 at 177.00
57.3%
Largest buy in 3 yrs
10 Mar 2026
Kalathur Rajesh Director
Bought
$494.94K 2,671 at 185.30
118%
First buy on file
2 Mar 2026
Noel Eugene M EVP & Chief Operating Officer
Sold on a plan 4×
$7.87M 41,209 at 191.05
58.2%
Sold half or more
31 Oct 2025
REILLY EUGENE F Director
Bought
$994.11K 5,554 at 178.99
×41
First buy on file
10 Sep 2024
Noel Eugene M EVP & President, U.S. Tower
Sold on a plan
$7.95M 33,135 at 240.00
55.3%
Sold half or more
23 Aug 2021
SHARBUTT DAVID E Director
Sold, plan not stated
$696.00K 2,400 at 290.00
59.3%
Sold half or more
14 Sep 2020
SHARBUTT DAVID E Director
Sold, plan not stated
$248.38K 973 at 255.27
56.0%
Sold half or more
27 Feb 2020
SHARBUTT DAVID E Director
Sold, plan not stated
$535.92K 2,200 at 243.60
53.7%
Sold half or more
8 Aug 2019
SHARBUTT DAVID E Director
Sold, plan not stated
$443.67K 2,039 at 217.59
51.8%
Sold half or more
8 May 2019
SHARBUTT DAVID E Director
Sold, plan not stated
$391.03K 2,035 at 192.15
51.8%
Sold half or more
17 Apr 2019
TAICLET JAMES D JR Chairman, President and CEO · indirect
Sold, plan not stated 4×
$1.64M 8,580 at 190.73
100%
Sold half or more
16 Apr 2019
TAICLET JAMES D JR Chairman, President and CEO · indirect
Sold, plan not stated 2×
$2.31M 11,863 at 195.11
58.0%
Sold half or more
30 Oct 2018
Marshall Steven C. Former Officer
Sold, plan not stated 3×
$25.59M 163,166 at 156.86
60.9%
Sold half or more
15 Mar 2017
Lara Gustavo Director
Sold, plan not stated
$2.38M 20,507 at 116.00
58.6%
Sold half or more
Showing 1–14 of 14.