ATMU
insider transactionsAtmus Filtration Technologies Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-34.3K
2.0K buy · 36.2K sell
Net value · 90d
-$1.5M
$110.0K in · $1.6M out
Sentiment · 90d
Net selling
6% buying · 94% selling
Open-market trades · 90d
7
2.0K buy · 36.2K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Sell·S
Chief People Officer
$116.1K
2.6K sh · $45.25
Own -5%
-
Sell·S
Jack Kienzler KEY
Chief Financial Officer
$232.2K
5.1K sh · $45.25
Own -6%
-
Sell·S
Charles Masters KEY
Senior Vice President
$130.8K
2.9K sh · $45.25
Own -6%
-
Sell·S
Stephanie Disher KEY
Chief Executive Officer
$1.2M
25.7K sh · $45.25
Own -7%
-
Grant·A
Director
$0
2.6K sh
Own +84%
-
Grant·A
Director
$0
2.6K sh
Own +16%
-
Grant·A
SVP-Chief Supply Chain Officer
$0
28.5K sh
Own New
-
Grant·A
Director
$0
2.6K sh
Own +29%
-
Grant·A
Director
$0
2.6K sh
Own +7%
-
Grant·A
Director
$0
2.6K sh
Own +15%
-
Grant·A
Director
$0
2.6K sh
Own +10%
-
Buy·P
Director
$104.4K
1.9K sh · $55.74
Own +8%
-
Buy·P
Director
$56
1 sh · $55.74
Own +0%
-
Buy·P
Director
$5.6K
100 sh · $55.71
Own +0%
-
Grant·A
Director
$0
2.6K sh
Own +29%
-
Grant·A
Chief People Officer
$0
2.0K sh
Own +4%
-
Grant·A
Jack Kienzler KEY
Chief Financial Officer
$0
5.2K sh
Own +7%
-
Grant·A
Charles Masters KEY
Senior Vice President
$0
4.1K sh
Own +10%
-
Grant·A
Stephanie Disher KEY
Chief Executive Officer
$0
31.5K sh
Own +9%
-
Grant·A
CLO & Corp Sec
$0
3.7K sh
Own +18%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 1, 2026 | Renee Swan | Sell S | 2.6K | $116.1K |
| Jun 1, 2026 | Jack Kienzler KEY | Sell S | 5.1K | $232.2K |
| Jun 1, 2026 | Charles Masters KEY | Sell S | 2.9K | $130.8K |
| Jun 1, 2026 | Stephanie Disher KEY | Sell S | 25.7K | $1.2M |
| May 12, 2026 | Heath Sharp | Grant A | 2.6K | $0 |
| May 12, 2026 | Roy Edwin Bennett | Grant A | 2.6K | $0 |
| May 12, 2026 | Kevin N Carpenter | Grant A | 28.5K | $0 |
| May 12, 2026 | Diego Donoso | Grant A | 2.6K | $0 |
| May 12, 2026 | Stephen E. Macadam | Grant A | 2.6K | $0 |
| May 12, 2026 | Jane A Leipold | Grant A | 2.6K | $0 |
| May 12, 2026 | Gretchen R Haggerty | Grant A | 2.6K | $0 |
| May 12, 2026 | Gretchen R Haggerty | Buy P | 1.9K | $104.4K |
| May 12, 2026 | Gretchen R Haggerty | Buy P | 1 | $56 |
| May 12, 2026 | Gretchen R Haggerty | Buy P | 100 | $5.6K |
| May 12, 2026 | Stuart A Taylor II | Grant A | 2.6K | $0 |
| Apr 1, 2026 | Renee Swan | Grant A | 2.0K | $0 |
| Apr 1, 2026 | Jack Kienzler KEY | Grant A | 5.2K | $0 |
| Apr 1, 2026 | Charles Masters KEY | Grant A | 4.1K | $0 |
| Apr 1, 2026 | Stephanie Disher KEY | Grant A | 31.5K | $0 |
| Apr 1, 2026 | Laura Heltebran | Grant A | 3.7K | $0 |
About ATMU insider trading
This page tracks insider transactions for Atmus Filtration Technologies Inc. (ATMU) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.