ATMU

insider transactions

Atmus Filtration Technologies Inc. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 365d

-34.3K

2.0K buy · 36.2K sell

Net value · 365d

-$1.5M

$110.0K in · $1.6M out

Sentiment · 365d

Net selling

6% buying · 94% selling

Open-market trades · 365d

2.0K buy · 36.2K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Sell·S
Jun 1, 26

Renee Swan

Chief People Officer

$116.1K

2.6K sh · $45.25

Own -5%
Sell·S
Jun 1, 26

Jack Kienzler KEY

Chief Financial Officer

$232.2K

5.1K sh · $45.25

Own -6%
Sell·S
Jun 1, 26

Charles Masters KEY

Senior Vice President

$130.8K

2.9K sh · $45.25

Own -6%
Sell·S
Jun 1, 26

Stephanie Disher KEY

Chief Executive Officer

$1.2M

25.7K sh · $45.25

Own -7%
Grant·A
May 12, 26

Heath Sharp

Director

$0

2.6K sh

Own +84%
Grant·A
May 12, 26

Roy Edwin Bennett

Director

$0

2.6K sh

Own +16%
Grant·A
May 12, 26

Kevin N Carpenter

SVP-Chief Supply Chain Officer

$0

28.5K sh

Own New
Grant·A
May 12, 26

Diego Donoso

Director

$0

2.6K sh

Own +29%
Grant·A
May 12, 26

Stephen E. Macadam

Director

$0

2.6K sh

Own +7%
Grant·A
May 12, 26

Jane A Leipold

Director

$0

2.6K sh

Own +15%
Grant·A
May 12, 26

Gretchen R Haggerty

Director

$0

2.6K sh

Own +10%
Buy·P
May 12, 26

Gretchen R Haggerty

Director

$104.4K

1.9K sh · $55.74

Own +8%
Buy·P
May 12, 26

Gretchen R Haggerty

Director

$56

1 sh · $55.74

Own +0%
Buy·P
May 12, 26

Gretchen R Haggerty

Director

$5.6K

100 sh · $55.71

Own +0%
Grant·A
May 12, 26

Stuart A Taylor II

Director

$0

2.6K sh

Own +29%
Grant·A
Apr 1, 26

Renee Swan

Chief People Officer

$0

2.0K sh

Own +4%
Grant·A
Apr 1, 26

Jack Kienzler KEY

Chief Financial Officer

$0

5.2K sh

Own +7%
Grant·A
Apr 1, 26

Charles Masters KEY

Senior Vice President

$0

4.1K sh

Own +10%
Grant·A
Apr 1, 26

Stephanie Disher KEY

Chief Executive Officer

$0

31.5K sh

Own +9%
Grant·A
Apr 1, 26

Laura Heltebran

CLO & Corp Sec

$0

3.7K sh

Own +18%
Other·F
Feb 27, 26

Renee Swan

Chief People Officer

$145.5K

2.3K sh · $64.53

Own -4%
Other·F
Feb 27, 26

Renee Swan

Chief People Officer

$617.6K

9.6K sh · $64.53

Own -15%
Other·F
Feb 27, 26

Jack Kienzler KEY

Chief Financial Officer

$248.5K

3.9K sh · $64.53

Own -5%
Other·F
Feb 27, 26

Jack Kienzler KEY

Chief Financial Officer

$1.0M

16.3K sh · $64.53

Own -17%
Other·F
Feb 27, 26

Charles Masters KEY

Senior Vice President

$137.5K

2.1K sh · $64.53

Own -5%
Other·F
Feb 27, 26

Charles Masters KEY

Senior Vice President

$583.7K

9.0K sh · $64.53

Own -17%
Other·F
Feb 27, 26

Stephanie Disher KEY

Chief Executive Officer

$1.0M

15.9K sh · $64.53

Own -4%
Other·F
Feb 27, 26

Stephanie Disher KEY

Chief Executive Officer

$4.3M

66.6K sh · $64.53

Own -15%
Grant·A
Feb 13, 26

Renee Swan

Chief People Officer

$0

18.5K sh

Own +42%
Grant·A
Feb 13, 26

Jack Kienzler KEY

Chief Financial Officer

$0

41.1K sh

Own +75%
Grant·A
Feb 13, 26

Charles Masters KEY

Senior Vice President

$0

21.2K sh

Own +65%
Grant·A
Feb 13, 26

Stephanie Disher KEY

Chief Executive Officer

$0

169.2K sh

Own +63%
Grant·A
Feb 5, 26

Heath Sharp

Director

$0

614 sh

Own +25%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 1, 2026	Renee Swan	Chief People Officer	Sell S	2.6K	-5%	$45.25	$116.1K
Jun 1, 2026	Jack Kienzler KEY	Chief Financial Officer	Sell S	5.1K	-6%	$45.25	$232.2K
Jun 1, 2026	Charles Masters KEY	Senior Vice President	Sell S	2.9K	-6%	$45.25	$130.8K
Jun 1, 2026	Stephanie Disher KEY	Chief Executive Officer	Sell S	25.7K	-7%	$45.25	$1.2M
May 12, 2026	Heath Sharp	Director	Grant A	2.6K	+84%	—	$0
May 12, 2026	Roy Edwin Bennett	Director	Grant A	2.6K	+16%	—	$0
May 12, 2026	Kevin N Carpenter	SVP-Chief Supply Chain Officer	Grant A	28.5K	New	—	$0
May 12, 2026	Diego Donoso	Director	Grant A	2.6K	+29%	—	$0
May 12, 2026	Stephen E. Macadam	Director	Grant A	2.6K	+7%	—	$0
May 12, 2026	Jane A Leipold	Director	Grant A	2.6K	+15%	—	$0
May 12, 2026	Gretchen R Haggerty	Director	Grant A	2.6K	+10%	—	$0
May 12, 2026	Gretchen R Haggerty	Director	Buy P	1.9K	+8%	$55.74	$104.4K
May 12, 2026	Gretchen R Haggerty	Director	Buy P	1	+0%	$55.74	$56
May 12, 2026	Gretchen R Haggerty	Director	Buy P	100	+0%	$55.71	$5.6K
May 12, 2026	Stuart A Taylor II	Director	Grant A	2.6K	+29%	—	$0
Apr 1, 2026	Renee Swan	Chief People Officer	Grant A	2.0K	+4%	—	$0
Apr 1, 2026	Jack Kienzler KEY	Chief Financial Officer	Grant A	5.2K	+7%	—	$0
Apr 1, 2026	Charles Masters KEY	Senior Vice President	Grant A	4.1K	+10%	—	$0
Apr 1, 2026	Stephanie Disher KEY	Chief Executive Officer	Grant A	31.5K	+9%	—	$0
Apr 1, 2026	Laura Heltebran	CLO & Corp Sec	Grant A	3.7K	+18%	—	$0
Feb 27, 2026	Renee Swan	Chief People Officer	Other F	2.3K	-4%	$64.53	$145.5K
Feb 27, 2026	Renee Swan	Chief People Officer	Other F	9.6K	-15%	$64.53	$617.6K
Feb 27, 2026	Jack Kienzler KEY	Chief Financial Officer	Other F	3.9K	-5%	$64.53	$248.5K
Feb 27, 2026	Jack Kienzler KEY	Chief Financial Officer	Other F	16.3K	-17%	$64.53	$1.0M
Feb 27, 2026	Charles Masters KEY	Senior Vice President	Other F	2.1K	-5%	$64.53	$137.5K
Feb 27, 2026	Charles Masters KEY	Senior Vice President	Other F	9.0K	-17%	$64.53	$583.7K
Feb 27, 2026	Stephanie Disher KEY	Chief Executive Officer	Other F	15.9K	-4%	$64.53	$1.0M
Feb 27, 2026	Stephanie Disher KEY	Chief Executive Officer	Other F	66.6K	-15%	$64.53	$4.3M
Feb 13, 2026	Renee Swan	Chief People Officer	Grant A	18.5K	+42%	—	$0
Feb 13, 2026	Jack Kienzler KEY	Chief Financial Officer	Grant A	41.1K	+75%	—	$0
Feb 13, 2026	Charles Masters KEY	Senior Vice President	Grant A	21.2K	+65%	—	$0
Feb 13, 2026	Stephanie Disher KEY	Chief Executive Officer	Grant A	169.2K	+63%	—	$0
Feb 5, 2026	Heath Sharp	Director	Grant A	614	+25%	—	$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.