ATMU - Atmus Filtration Technologies Inc.

Insider activity in ATMU over the last quarter tilts toward selling: insiders offloaded a net 1,870 shares worth roughly $97K.

Classified under Automobile Components (Consumer Discretionary sector), ATMU's insider flows are most useful compared with peers in the same group.

Insider Ownership

Role	Insider	Shares	Value	30d
CEO	Disher Stephanie	363.0K	$16.43M	-
CFO	Kienzler Jack	75.8K	$3.43M	-
Other	Swan Renee	46.9K	$2.39M	-
VP	Masters Charles	43.6K	$1.97M	-
Dir	MacAdam Stephen E.	40.6K	$2.02M	-

Buys and sells only

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Aug 17, 2026	Swan Renee	Chief People Officer	Sell	3,870	$50.89	$196,955.91	-7.6%	-	-
Aug 12, 2026	MacAdam Stephen E.76	Director	Buy	2,000	$49.78	$99,551.20	+5.2%	-	-
Jun 1, 2026	Swan Renee	Chief People Officer	Sell	2,566	$45.25	$116,103.80	-4.8%	+3.3%	-
Jun 1, 2026	Masters Charles	Senior Vice President	Sell	2,890	$45.25	$130,763.83	-6.2%	+3.3%	-
Jun 1, 2026	Kienzler Jack	Chief Financial Officer	Sell	5,132	$45.25	$232,207.60	-6.3%	+3.3%	-
Jun 1, 2026	Disher Stephanie	Chief Executive Officer	Sell	25,652	$45.25	$1,160,676.04	-6.6%	+3.3%	-
May 12, 2026	Haggerty Gretchen R	Director	Buy	1,973	$55.74	$109,999.06	+8.3%	-10.6%	-
Nov 13, 2025	Donoso Diego	Director	Sell	60	$41.47	$2,488.40	-0.7%	+29.4%	-
Sep 5, 2025	Donoso Diego	Director	Buy	40	$45.30	$1,812.15	+0.4%	+14.8%	+4.9%
Aug 23, 2024	Haggerty Gretchen R	Director	Buy	5,849	$34.20	$199,999.82	+41.7%	+27.4%	+27.9%