Macadam Stephen E. purchased $100K of ATMU

Macadam Stephen E. purchased 2,000 shares of Atmus Filtration Technologies Inc. (ATMU) at $49.78 on 2026-08-12.

Original reporting
SEC EDGAR · Macadam Stephen E.
Published Aug 13, 2026, 6:48 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 13, 2026, 6:56 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
$ATMU
Bullish
medium confidence
Mentioned
$ATMU
Relevance
4/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$ATMUBullishLow
01

Why it matters

The newest fact is the director’s open-market purchase size, price, and filing timestamp; it may slightly influence sentiment but does not change fundamentals in the text.

02

Market read

Traders may note insider buying, but the disclosure lacks accompanying operational or financial catalysts.

03

What to watch

The director’s post-trade holdings (40,588 shares) and whether there were prior buys/sales are not provided, limiting inference.

Relevance 4/10Novelty 6/10Timing: today’s SEC Form 4 filing disclosure (filed 2026-08-13)

Background

The article is an SEC Form 4 insider transaction report for Atmus Filtration Technologies Inc.

Company-level read

Ticker impact

$ATMUBullishMedium confidence
Context

Atmus Filtration Technologies director Macadam Stephen E. bought 2,000 shares at $49.7756 on 2026-08-12, totaling $99,551.20.

Expected impact

Likely limited near-term impact; any effect is more sentiment than valuation.

Evidence & confidence

The filing is a primary Form 4 disclosure, but it does not include new company financials, guidance, or operational developments.

Market effects

No clear sector read-through; this is a single-insider transaction without broader industry information.

None indicated.

None indicated.

Counterpoint

Insider buys can be routine or driven by personal liquidity planning, and this one is not tied to a 10b5-1 plan.

Key entities

  • ATMU

    Atmus Filtration Technologies Inc., subject of the Form 4 insider transaction.

  • Macadam Stephen E.

    Director who purchased 2,000 shares open-market at $49.7756 on 2026-08-12.

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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