ATMUS FILTRATION TECHNOLOGIE

Ticker: ATMU CUSIP: 04956D107 Class: Common Stock

Port Capital LLC's Holding History (CIK: 0001729212)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 876,720 Value ($000) $45,511 Avg Close $48.33 Range $42.52 - $54.79

Q3 2025

Shares 430,460 Value ($000) $19,409 Avg Close $41.84 Range $35.97 - $47.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	876,720	$45,511	$48.33	$42.52 - $54.79
Q3 2025	430,460	$19,409	$41.84	$35.97 - $47.01