Clarke Teresa Hillary purchased $64K of AMT

Clarke Teresa Hillary purchased 338 shares of AMERICAN TOWER CORP /MA/ (AMT) at an average of $188.38 ($167.52–$227.42) across 15 trades over 2023-04-28 to 2026-10-20.

Original reporting
SEC EDGAR · Clarke Teresa Hillary
Published Oct 22, 2026, 9:42 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 22, 2026, 9:44 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
$AMT
Bullish
medium confidence
Mentioned
$AMT
Relevance
4/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$AMTBullishLow
01

Why it matters

A small insider buy by a director may be viewed as a modest vote of confidence but is unlikely to affect price materially.

02

Market read

The filing provides a new data point on insider activity but has limited trading relevance.

03

What to watch

The director's overall holdings remain modest; the buy does not signal a strategic shift.

Relevance 4/10Novelty 4/10Timing: today

Background

SEC Form 4 filing discloses insider transactions. This is the first public report of the purchase.

Company-level read

Ticker impact

$AMTBullishMedium confidence
Context

Director Clarke Teresa Hillary bought 338 shares of American Tower Corp for $63.7K, increasing her stake to 5,645 shares.

Expected impact

minor upward pressure as the market prices in the insider buy

Evidence & confidence

The purchase size ($64K) is small relative to market cap; director buys are generally viewed positively but the impact is limited.

Market effects

None; the transaction is company‑specific and does not affect the broader telecom tower sector.

None; the filing is a routine U.S. insider disclosure.

Low; no global market implications.

Counterpoint

The purchase could be a routine portfolio rebalancing rather than a strong endorsement, so investors should not overinterpret.

Key entities

  • American Tower Corp

    U.S. telecom tower REIT (ticker AMT).

  • Clarke Teresa Hillary

    Director of American Tower Corp.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

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