Atmus Filtration Technologies Inc.
Ownership
Ownership Structure
Who owns Atmus Filtration Technologies Inc. (ATMU)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.2% of the shares are freely tradable; institutional investors hold 105.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.18 | 12,387,072 | +81.9 | 06/30/2026 |
| FMR Inc | 6.52 | 5,316,383 | +7.7 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.64 | 4,604,869 | +24.8 | 06/30/2026 |
| Amvescap Plc. | 5.46 | 4,457,550 | +33.3 | 06/30/2026 |
| T. Rowe Price Associates, Inc. | 5.38 | 4,388,256 | -2.2 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.42 | 3,609,746 | +1.2 | 06/30/2026 |
| State Street Corp | 3.99 | 3,256,278 | +71.8 | 06/30/2026 |
| The Goldman Sachs Group Inc | 3.56 | 2,903,771 | -11.8 | 06/30/2026 |
| Geode Capital Management, LLC | 3.52 | 2,868,271 | +8.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.96 | 4,859,043 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Swan Renee | Chief People Officer | 46,875 | 2,240,625 $ | Aug 17, 2026 | direct |
| Macadam Stephen E. | Director | 40,588 | 1,940,106 $ | Aug 12, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | Swan Renee | Chief People Officer | Sell | 3,870 | 50.89 | 196,956 |
| Aug 12, 2026 | Macadam Stephen E. | Director | Buy | 2,000 | 49.78 | 99,551 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 4, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.