The director buy is a modest positive signal following strong Q2 results and raised guidance, but the CPO sale and small absolute size limit conviction. Monitor for additional insider buying from C-suite executives in the next 30 days to confirm bullish conviction; the upcoming Q3 2026 earnings release will test the raised guidance trajectory.
Price Chart
Executive Summary
Atmus Filtration (ATMU) insider cluster shows a director buying $100K worth of stock while the Chief People Officer sold $197K in an open-market sale, for a net mixed direction of $297K total. The director purchase follows a strong Q2 earnings beat and raised guidance 11 days prior, suggesting confidence in the company's outlook, while the CPO sale is modest relative to market cap and likely liquidity-driven. The cluster is small relative to the $4.2B market cap (0.007%), making it a low-impact event despite the bullish earnings context.
Key Financial Metrics
Key Facts
- Director Stephen Macadam purchased 2,000 shares at $49.78 for $100K on 2026-08-12.
- Chief People Officer Renee Swan sold 3,870 shares at $50.89 for $197K on 2026-08-17.
- Total cluster value of $297K represents ~0.007% of ATMU's $4.2B market cap.
- The purchase follows ATMU's Q2 2026 earnings beat (EPS $0.78 vs consensus $0.79 GAAP, revenue $528M vs $507.7M consensus) and raised full-year guidance on 2026-08-07.
- The CPO sale is a single open-market transaction with no pattern suggesting 10b5-1 or routine vesting-driven selling.
Financial Impact
Cluster value of $297K is immaterial relative to $4.2B market cap; director buy of $100K is a modest signal of confidence post-strong earnings.
Risk Factors
- The CPO sale could indicate insider caution despite the director buy, though the sale is small and may be liquidity-driven.
- The cluster is too small to be statistically meaningful; a single director buy does not constitute a strong signal.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ATMU-1787073823384 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 1d ago | 8-K | $44.46 | awaiting T+20 | — | $45.00 (+1.21%) |
Sep 22, 2026 5w ago | Institutional Cluster | $45.40 $44.75 | ▼ −1.43% | ▼ −0.87% | $45.00 (−0.88%) |
Aug 18, 2026 10w ago | Insider Cluster | $49.89 $45.10 | ▼ −9.60% | ▼ −8.61% | $45.00 (−9.80%) |
Aug 7, 2026 11w ago | 8-K | $51.17 $48.34 | ▼ −5.53% | ▼ −5.13% | $45.00 (−12.06%) |
Jun 2, 2026 21w ago | Insider Cluster | $47.37 $49.71 | ▲ +4.94% | ▲ +5.94% | $45.00 (−5.00%) |
May 13, 2026 23w ago | 8-K | $54.15 $48.18 | ▼ −11.02% | ▼ −10.41% | $45.00 (−16.90%) |
May 11, 2026 24w ago | 3 | $56.60 $48.38 | ▼ −14.52% | ▼ −14.22% | $45.00 (−20.49%) |
May 11, 2026 24w ago | 8-K | $56.60 $48.38 | ▼ −14.52% | ▼ −14.22% | $45.00 (−20.49%) |
US Market Status
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers