ATMU

Atmus Filtration Technologies Inc.

Insider trading activity for Atmus Filtration Technologies Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$97.4K

net selling

Bought(1 · 1 insiders): $99.6K
Sold(1 · 1 insiders): $197K

Past 6 months

-$1.6M

net selling

Bought(4 · 2 insiders): $209.6K
Sold(5 · 4 insiders): $1.8M

Past 12 months

-$1.6M

net selling

Bought(4 · 2 insiders): $209.6K
Sold(6 · 5 insiders): $1.8M

Transaction history

The 50 most recent Form 4 transactions.

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Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Aug 17	Swan Renee	Chief People Officer	SSELL	3,870	$50.89	$197K	-7.6%	Open the original filing on SEC.gov
Aug 12	Macadam Stephen E.	Director	PBUY★	2,000	$49.78	$99.6K	+5.2%	Open the original filing on SEC.gov
Jun 1	Swan Renee	Chief People Officer	SSELL	2,566	$45.25	$116.1K	-4.8%	Open the original filing on SEC.gov
Jun 1	Kienzler Jack	Chief Financial Officer	SSELL	5,132	$45.25	$232.2K	-6.3%	Open the original filing on SEC.gov
Jun 1	Masters Charles	Senior Vice President	SSELL	2,890	$45.25	$130.8K	-6.2%	Open the original filing on SEC.gov
Jun 1	Disher Stephanie	Chief Executive Officer	SSELL	25,652	$45.25	$1.2M	-6.6%	Open the original filing on SEC.gov
May 12	Sharp Heath	Director	AGRANT	2,619	—	—	+84.1%	Open the original filing on SEC.gov
May 12	Bennett Roy Edwin	Director	AGRANT	2,619	—	—	+15.7%	Open the original filing on SEC.gov
May 12	Carpenter Kevin N	SVP-Chief Supply Chain…	AGRANT	28,509	—	—	—	Open the original filing on SEC.gov
May 12	Donoso Diego	Director	AGRANT	2,619	—	—	+28.8%	Open the original filing on SEC.gov
May 12	Macadam Stephen E.	Director	AGRANT	2,619	—	—	+7.3%	Open the original filing on SEC.gov
May 12	Leipold Jane A	Director	AGRANT	2,619	—	—	+14.6%	Open the original filing on SEC.gov
May 12	Haggerty Gretchen R	Director	AGRANT	2,619	—	—	+10.2%	Open the original filing on SEC.gov
May 12	Haggerty Gretchen R	Director	PBUY▲	1,872	$55.74	$104.4K	+7.8%	Open the original filing on SEC.gov
May 12	Haggerty Gretchen R	Director	PBUY	1	$55.74	$56	0.0%	Open the original filing on SEC.gov
May 12	Haggerty Gretchen R	Director	PBUY★	100.35	$55.71	$5.6K	+0.4%	Open the original filing on SEC.gov
May 12	Taylor Stuart A II	Director	AGRANT	2,619	—	—	+28.8%	Open the original filing on SEC.gov
Apr 1	Swan Renee	Chief People Officer	AGRANT	1,962	—	—	+3.8%	Open the original filing on SEC.gov
Apr 1	Kienzler Jack	Chief Financial Officer	AGRANT	5,163	—	—	+6.8%	Open the original filing on SEC.gov
Apr 1	Masters Charles	Senior Vice President	AGRANT	4,130	—	—	+9.8%	Open the original filing on SEC.gov
Apr 1	Disher Stephanie	Chief Executive Officer	AGRANT	31,492	—	—	+8.8%	Open the original filing on SEC.gov
Apr 1	Heltebran Laura	CLO & Corp Sec	AGRANT	3,717	—	—	+18.2%	Open the original filing on SEC.gov
Feb 27	Swan Renee	Chief People Officer	FTAX	2,254	$64.53	$145.5K	-4.2%	Open the original filing on SEC.gov
Feb 27	Swan Renee	Chief People Officer	FTAX	9,570	$64.53	$617.6K	-15.2%	Open the original filing on SEC.gov
Feb 27	Kienzler Jack	Chief Financial Officer	FTAX	3,851	$64.53	$248.5K	-4.8%	Open the original filing on SEC.gov
Feb 27	Kienzler Jack	Chief Financial Officer	FTAX	16,266	$64.53	$1M	-17.0%	Open the original filing on SEC.gov
Feb 27	Masters Charles	Senior Vice President	FTAX	2,131	$64.53	$137.5K	-4.8%	Open the original filing on SEC.gov
Feb 27	Masters Charles	Senior Vice President	FTAX	9,046	$64.53	$583.7K	-16.9%	Open the original filing on SEC.gov
Feb 27	Disher Stephanie	Chief Executive Officer	FTAX	15,854	$64.53	$1M	-4.3%	Open the original filing on SEC.gov
Feb 27	Disher Stephanie	Chief Executive Officer	FTAX	66,639	$64.53	$4.3M	-15.2%	Open the original filing on SEC.gov
Feb 13	Swan Renee	Chief People Officer	AGRANT	18,536	—	—	+41.5%	Open the original filing on SEC.gov
Feb 13	Kienzler Jack	Chief Financial Officer	AGRANT	41,094	—	—	+75.0%	Open the original filing on SEC.gov
Feb 13	Masters Charles	Senior Vice President	AGRANT	21,152	—	—	+65.4%	Open the original filing on SEC.gov
Feb 13	Disher Stephanie	Chief Executive Officer	AGRANT	169,209	—	—	+62.6%	Open the original filing on SEC.gov
Feb 5	Sharp Heath	Director	AGRANT	614	—	—	+24.6%	Open the original filing on SEC.gov
Nov 18, 2025	Donoso Diego	Director	JOTHER	20	—	—	+0.2%	Open the original filing on SEC.gov
Nov 13, 2025	Donoso Diego	Director	SSELL	20	$48.84	$977	-0.2%	Open the original filing on SEC.gov
Oct 3, 2025	Kienzler Jack	Chief Financial Officer	FTAX	25	$44.50	$1.1K	<0.1%	Open the original filing on SEC.gov
Oct 3, 2025	Masters Charles	Senior Vice President	FTAX	28	$44.50	$1.2K	<0.1%	Open the original filing on SEC.gov
Sep 5, 2025	Donoso Diego	Director	PBUY	15	$45.81	$687	+0.2%	Open the original filing on SEC.gov
Aug 14, 2025	Swan Renee	Chief People Officer	FTAX	5,007	$45.18	$226.2K	-10.1%	Open the original filing on SEC.gov
Aug 13, 2025	Donoso Diego	Director	PBUY	25	$45.00	$1.1K	+0.3%	Open the original filing on SEC.gov
May 20, 2025	Bennett Roy Edwin	Director	AGRANT	3,886	—	—	+30.3%	Open the original filing on SEC.gov
May 20, 2025	Donoso Diego	Director	AGRANT	3,886	—	—	+74.9%	Open the original filing on SEC.gov
May 20, 2025	Haggerty Gretchen R	Director	AGRANT	3,886	—	—	+19.6%	Open the original filing on SEC.gov
May 20, 2025	Leipold Jane A	Director	AGRANT	3,886	—	—	+27.7%	Open the original filing on SEC.gov
May 20, 2025	Macadam Stephen E.	Director	AGRANT	3,886	—	—	+12.1%	Open the original filing on SEC.gov
May 20, 2025	Taylor Stuart A II	Director	AGRANT	3,886	—	—	+74.9%	Open the original filing on SEC.gov
May 13, 2025	Heltebran Laura	CLO & Corp Sec	AGRANT	20,444	—	—	—	Open the original filing on SEC.gov
Apr 2, 2025	Donoso Diego	Director	SSELL	40	$37.79	$1.5K	-0.4%	Open the original filing on SEC.gov

SSELL$197K

Swan Renee · Chief People…Aug 17

3,870 sh @ $50.89 · -7.6% own

PBUY★$99.6K

Macadam Stephen E. · DirectorAug 12

2,000 sh @ $49.78 · +5.2% own

SSELL$116.1K

Swan Renee · Chief People…Jun 1

2,566 sh @ $45.25 · -4.8% own

SSELL$232.2K

Kienzler Jack · Chief Financial…Jun 1

5,132 sh @ $45.25 · -6.3% own

SSELL$130.8K

Masters Charles · Senior Vice…Jun 1

2,890 sh @ $45.25 · -6.2% own

SSELL$1.2M

Disher Stephanie · Chief Executive…Jun 1

25,652 sh @ $45.25 · -6.6% own

AGRANT—

Sharp Heath · DirectorMay 12

2,619 sh · +84.1% own

AGRANT—

Bennett Roy Edwin · DirectorMay 12

2,619 sh · +15.7% own

AGRANT—

Carpenter Kevin N · SVP-Chief Supply…May 12

28,509 sh

AGRANT—

Donoso Diego · DirectorMay 12

2,619 sh · +28.8% own

AGRANT—

Macadam Stephen E. · DirectorMay 12

2,619 sh · +7.3% own

AGRANT—

Leipold Jane A · DirectorMay 12

2,619 sh · +14.6% own

AGRANT—

Haggerty Gretchen R · DirectorMay 12

2,619 sh · +10.2% own

PBUY▲$104.4K

Haggerty Gretchen R · DirectorMay 12

1,872 sh @ $55.74 · +7.8% own

PBUY$56

Haggerty Gretchen R · DirectorMay 12

1 sh @ $55.74 · 0.0% own

PBUY★$5.6K

Haggerty Gretchen R · DirectorMay 12

100.35 sh @ $55.71 · +0.4% own

AGRANT—

Taylor Stuart A II · DirectorMay 12

2,619 sh · +28.8% own

AGRANT—

Swan Renee · Chief People…Apr 1

1,962 sh · +3.8% own

AGRANT—

Kienzler Jack · Chief Financial…Apr 1

5,163 sh · +6.8% own

AGRANT—

Masters Charles · Senior Vice…Apr 1

4,130 sh · +9.8% own

AGRANT—

Disher Stephanie · Chief Executive…Apr 1

31,492 sh · +8.8% own

AGRANT—

Heltebran Laura · CLO & Corp SecApr 1

3,717 sh · +18.2% own

FTAX$145.5K

Swan Renee · Chief People…Feb 27

2,254 sh @ $64.53 · -4.2% own

FTAX$617.6K

Swan Renee · Chief People…Feb 27

9,570 sh @ $64.53 · -15.2% own

FTAX$248.5K

Kienzler Jack · Chief Financial…Feb 27

3,851 sh @ $64.53 · -4.8% own

FTAX$1M

Kienzler Jack · Chief Financial…Feb 27

16,266 sh @ $64.53 · -17.0% own

FTAX$137.5K

Masters Charles · Senior Vice…Feb 27

2,131 sh @ $64.53 · -4.8% own

FTAX$583.7K

Masters Charles · Senior Vice…Feb 27

9,046 sh @ $64.53 · -16.9% own

FTAX$1M

Disher Stephanie · Chief Executive…Feb 27

15,854 sh @ $64.53 · -4.3% own

FTAX$4.3M

Disher Stephanie · Chief Executive…Feb 27

66,639 sh @ $64.53 · -15.2% own

AGRANT—

Swan Renee · Chief People…Feb 13

18,536 sh · +41.5% own

AGRANT—

Kienzler Jack · Chief Financial…Feb 13

41,094 sh · +75.0% own

AGRANT—

Masters Charles · Senior Vice…Feb 13

21,152 sh · +65.4% own

AGRANT—

Disher Stephanie · Chief Executive…Feb 13

169,209 sh · +62.6% own

AGRANT—

Sharp Heath · DirectorFeb 5

614 sh · +24.6% own

JOTHER—

Donoso Diego · DirectorNov 18, 2025

20 sh · +0.2% own

SSELL$977

Donoso Diego · DirectorNov 13, 2025

20 sh @ $48.84 · -0.2% own

FTAX$1.1K

Kienzler Jack · Chief Financial…Oct 3, 2025

25 sh @ $44.50 · <0.1% own

FTAX$1.2K

Masters Charles · Senior Vice…Oct 3, 2025

28 sh @ $44.50 · <0.1% own

PBUY$687

Donoso Diego · DirectorSep 5, 2025

15 sh @ $45.81 · +0.2% own

FTAX$226.2K

Swan Renee · Chief People…Aug 14, 2025

5,007 sh @ $45.18 · -10.1% own

PBUY$1.1K

Donoso Diego · DirectorAug 13, 2025

25 sh @ $45.00 · +0.3% own

AGRANT—

Bennett Roy Edwin · DirectorMay 20, 2025

3,886 sh · +30.3% own

AGRANT—

Donoso Diego · DirectorMay 20, 2025

3,886 sh · +74.9% own

AGRANT—

Haggerty Gretchen R · DirectorMay 20, 2025

3,886 sh · +19.6% own

AGRANT—

Leipold Jane A · DirectorMay 20, 2025

3,886 sh · +27.7% own

AGRANT—

Macadam Stephen E. · DirectorMay 20, 2025

3,886 sh · +12.1% own

AGRANT—

Taylor Stuart A II · DirectorMay 20, 2025

3,886 sh · +74.9% own

AGRANT—

Heltebran Laura · CLO & Corp SecMay 13, 2025

20,444 sh

SSELL$1.5K

Donoso Diego · DirectorApr 2, 2025

40 sh @ $37.79 · -0.4% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

1 of 38 filings we hold was filed after the two-business-day deadline. The furthest past the deadline was 156 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Insider	Past deadline	Largest line	Source
Apr 2, 2025	Nov 18, 2025	Donoso DiegoDirector	156days · about 7 months	$1.5K	Filing ↗

Donoso DiegoDirector

156days · about 7 months

Traded Apr 2, 2025 · filed Nov 18, 2025Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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