ATMU Atmus Filtration Technologies (ATMU) Insider Trading, Ownership & Congress Trades
Autos · Motor vehicle parts & accessories · CIK 0001921963
Form 144 · 1
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
181
13F, latest reported quarter
What the filings say about ATMU
Insiders, 180 days
-$1.6M net sold
2 buyers · 4 sellers · 0% of sales under a 10b5-1 plan
Planned sales (Form 144), 90 days
$197.0K
1 notice
Atmus Filtration Technologies insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, Atmus Filtration Technologies Inc. insiders sold a net $1.6M of stock across 18 Form 4 purchases and sales, with 2 insiders buying. Source: SEC Form 4 filings, as of 2026-10-28.
Insider
Filed
Shares
Value
Since filing
Context
- 1 earlier Form 4 trade (code P or S) here by this insider (1 sale), the last on Jun 1, 2026.
- The trade is 8.3% of the 46,875 shares held after it.
- No other insider sold within 30 days.
- 181 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief People Officer Swan Renee sold about $197.0K of ATMU on Aug 17, 2026; 181 funds added in the latest 13F quarter.Context
- 3 earlier Form 4 trades (code P or S) here by this insider (3 buys), the last on Aug 7, 2024.
- +14.7% median (+15.1% mean) 90-day return after 3 previous buys.
- The trade is 4.9% of the 40,588 shares held after it.
- No other insider bought within 30 days.
- 181 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Macadam Stephen E. bought about $99.6K of ATMU on Aug 12, 2026; 181 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 5.1% of the 50,745 shares held after it.
- 3 other insiders sold within 30 days.
- 181 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief People Officer Swan Renee sold about $116.1K of ATMU on Jun 1, 2026, the largest insider sale at the company on our record; 3 other insiders sold within 30 days and 181 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 6.6% of the 43,579 shares held after it.
- 3 other insiders sold within 30 days.
- 181 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Senior Vice President Masters Charles sold about $130.8K of ATMU on Jun 1, 2026, the largest insider sale at the company on our record; 3 other insiders sold within 30 days and 181 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 6.8% of the 75,804 shares held after it.
- 3 other insiders sold within 30 days.
- 181 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Financial Officer Kienzler Jack sold about $232.2K of ATMU on Jun 1, 2026, the largest insider sale at the company on our record; 3 other insiders sold within 30 days and 181 funds added in the latest 13F quarter.18 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$1.6M over 180 days
-$97.4K over 90 days
below 68% of Autos
Congress
no House purchase disclosed in the last 12 months
Funds
181 funds bought in last quarter
more than 68% of Autos
Revenue
+5.7% year over year
more than 56% of Autos
Margin
11.8% net margin
more than 92% of Autos
Buybacks
$20.3M repurchased, FY to 2026-06-30
below 56% of Autos
Short interest
4.2% of the float short (float per yahoo 2026-10-26) · 3.8 days to cover · settled 2026-09-30
more than 55% of Autos
What changed in the last 30 days
Nothing new filed in the last 30 days
Watch ATMU
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-1.2%12M
Insider buyInsider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns ATMU: institutional holders (13F)
13F holdings, latest reported quarter
12,387,072 sh
$631.6M
5,316,383 sh
$271.1M
4,604,869 sh
$234.8M
4,457,550 sh
$227.3M
3,609,746 sh
$184.1M
Congress trades in ATMU
No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
ATMU planned insider sales (Form 144)
Notice of intent to sell, filed before any sale
Swan Renee
Filed 2026-08-17
$197.0K
ATMU mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
LVIP Channing Small Cap Value Fund
$2.9M position · as of 2026-06-30
2.5%
CHANNING INTRINSIC VALUE SMALL-CAP FUND
$259.3K position · as of 2026-07-31
2.5%
WESTWOOD QUALITY SMALLCAP FUND
$18.0M position · as of 2026-07-31
2.1%
Columbia Variable Portfolio - Select Small Cap Value Fund
$2.7M position · as of 2026-06-30
2.0%
abrdn Focused U.S. Small Cap Active ETF
$201.0K position · as of 2026-07-31
2.0%
Cambiar Small Cap Fund
$1.4M position · as of 2026-07-31
2.0%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2024
$6.1M
$13.3M
$1.4M
+82%
+45%
2023
$8.8M
$10.7M
$1.9M
+8%
+25%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $1.6M sold by insiders over 180 days, 181 funds added last quarter, $197.0K in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
ATMU financials
Revenue growth
+5.7%
XBRL, annual
Net margin
11.8%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$1.9B
four quarters, 2025-07-01 to 2026-06-30
Revenue, TTM ATMU
| FY Dec 2025 | $1.8B |
| FY Dec 2024 | $1.7B |
| FY Dec 2023 | $1.6B |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | $527.9M |
| Mar 2026 | $477.5M |
| Dec 2025 | $446.6M |
| Sep 2025 | $447.7M |
| Jun 2025 | $453.5M |
| Mar 2025 | $416.5M |
| Dec 2024 | $406.7M |
| Sep 2024 | $403.7M |
At each fiscal year end
Single quarter
Net margin, TTM
+11.3%
net income over revenue, 2025-07-01 to 2026-06-30
Net margin, TTM ATMU
| FY Dec 2025 | +11.8% |
| FY Dec 2024 | +11.1% |
| FY Dec 2023 | +10.5% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | +12.1% |
| Mar 2026 | +10.1% |
| Dec 2025 | +10.7% |
| Sep 2025 | +12.2% |
| Jun 2025 | +13.2% |
| Mar 2025 | +10.7% |
| Dec 2024 | +9.9% |
| Sep 2024 | +10.8% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$190.4M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Free cash flow, TTM ATMU
| FY Dec 2025 | $148.8M |
| FY Dec 2024 | $56.8M |
| FY Dec 2023 | $143.2M |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | $64.8M |
| Mar 2026 | $25.5M |
| Dec 2025 | $31.2M |
| Sep 2025 | $68.9M |
| Jun 2025 | $32.4M |
| Mar 2025 | $16.3M |
| Dec 2024 | $10.0M |
| Sep 2024 | $54.3M |
At each fiscal year end
Single quarter
Debt to equity
2.20x
long-term 2026-06-30 plus current 2026-06-30; equity 2026-06-30
Debt to equity ATMU
| FY Dec 2025 | 1.51x |
| FY Dec 2024 | 2.61x |
| FY Dec 2023 | 7.43x |
| FY Dec 2022 | 0.00x |
| FY Dec 2021 | n/a |
| Jun 2026 | 2.20x |
| Mar 2026 | 2.47x |
| Dec 2025 | 1.51x |
| Sep 2025 | 1.72x |
| Jun 2025 | 1.85x |
| Mar 2025 | 2.22x |
| Dec 2024 | 2.61x |
| Sep 2024 | 2.70x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
0.25x
TTM operating cash flow over long-term 2026-06-30 plus current 2026-06-30
Cash flow to debt ATMU
| FY Dec 2025 | 0.36x |
| FY Dec 2024 | 0.18x |
| FY Dec 2023 | 0.32x |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | 0.25x |
| Mar 2026 | 0.21x |
| Dec 2025 | 0.36x |
| Sep 2025 | 0.30x |
| Jun 2025 | 0.28x |
| Mar 2025 | 0.24x |
| Dec 2024 | 0.18x |
| Sep 2024 | 0.21x |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+55.8%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on equity ATMU
| FY Dec 2025 | +68.5% |
| FY Dec 2024 | +120.5% |
| FY Dec 2023 | +63.9% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | +55.8% |
| Mar 2026 | +63.1% |
| Dec 2025 | +68.5% |
| Sep 2025 | +71.5% |
| Jun 2025 | +76.3% |
| Mar 2025 | +95.5% |
| Dec 2024 | +120.5% |
| Sep 2024 | +141.1% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+13.4%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets ATMU
| FY Dec 2025 | +16.3% |
| FY Dec 2024 | +16.3% |
| FY Dec 2023 | +17.5% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | +13.4% |
| Mar 2026 | +13.8% |
| Dec 2025 | +16.3% |
| Sep 2025 | +15.6% |
| Jun 2025 | +15.1% |
| Mar 2025 | +15.8% |
| Dec 2024 | +16.3% |
| Sep 2024 | +16.1% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
+21.9%
operating income after a 22.3% effective tax rate, over long-term 2026-06-30 plus current 2026-06-30 plus average of 2025-06-30 and 2026-06-30 minus cash
Return on invested capital ATMU
| FY Dec 2025 | +35.2% |
| FY Dec 2024 | +36.9% |
| FY Dec 2023 | +24.0% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | +21.9% |
| Mar 2026 | +21.3% |
| Dec 2025 | +35.2% |
| Sep 2025 | +34.0% |
| Jun 2025 | +31.9% |
| Mar 2025 | +33.7% |
| Dec 2024 | +36.9% |
| Sep 2024 | +37.6% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+26.7%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
Return on capital employed ATMU
| FY Dec 2025 | +32.7% |
| FY Dec 2024 | +34.2% |
| FY Dec 2023 | +39.7% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | +26.7% |
| Mar 2026 | +26.3% |
| Dec 2025 | +32.7% |
| Sep 2025 | +31.9% |
| Jun 2025 | +30.6% |
| Mar 2025 | +32.2% |
| Dec 2024 | +34.2% |
| Sep 2024 | +35.2% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
17.18x
close 2026-10-27 over four quarters of diluted EPS, 2025-07-01 to 2026-06-30
P/E, trailing ATMU
| FY Dec 2025 | 20.68x |
| FY Dec 2024 | 17.73x |
| FY Dec 2023 | 11.51x |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | 19.46x |
| Mar 2026 | 22.18x |
| Dec 2025 | 20.68x |
| Sep 2025 | 18.79x |
| Jun 2025 | 16.12x |
| Mar 2025 | 16.62x |
| Dec 2024 | 17.73x |
| Sep 2024 | 17.54x |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$4.4B
market value at close 2026-10-27 on 2026-07-31 shares, plus long-term 2026-06-30 plus current 2026-06-30, minus cash 2026-06-30
Enterprise value ATMU
| FY Dec 2025 | $4.6B |
| FY Dec 2024 | $3.7B |
| FY Dec 2023 | $2.4B |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | $4.9B |
| Mar 2026 | $5.4B |
| Dec 2025 | $4.6B |
| Sep 2025 | $4.1B |
| Jun 2025 | $3.4B |
| Mar 2025 | $3.4B |
| Dec 2024 | $3.7B |
| Sep 2024 | $3.5B |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+5.2%
TTM free cash flow over market value at close 2026-10-27
FCF yield ATMU
| FY Dec 2025 | +3.5% |
| FY Dec 2024 | +1.7% |
| FY Dec 2023 | +7.3% |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | +4.6% |
| Mar 2026 | +3.4% |
| Dec 2025 | +3.5% |
| Sep 2025 | +3.4% |
| Jun 2025 | +3.8% |
| Mar 2025 | +3.0% |
| Dec 2024 | +1.7% |
| Sep 2024 | +2.3% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
1.08x
P/E over trailing EPS growth of 16%: four quarters to 2026-06-30 against the four to 2025-06-30
PEG, trailing ATMU
| FY Dec 2025 | 1.52x |
| FY Dec 2024 | 2.13x |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Jun 2026 | 1.22x |
| Mar 2026 | 1.40x |
| Dec 2025 | 1.52x |
| Sep 2025 | 1.55x |
| Jun 2025 | 1.76x |
| Mar 2025 | 1.25x |
| Dec 2024 | 2.13x |
| Sep 2024 | 5.19x |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-27. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Revenue | $1.8B | $1.7B | $1.6B | $1.6B |
| Gross profit | $498.3M | $462.1M | $432.7M | $359.2M |
| Operating income | $299.0M | $266.2M | $248.4M | $203.9M |
| Net income | $207.4M | $185.6M | $171.3M | $170.4M |
| EPS (diluted) | 2.50 | 2.22 | 2.05 | 2.05 |
| Operating cash flow | $202.7M | $105.4M | $189.0M | $165.7M |
| Cash | $236.4M | $184.3M | $168.0M | $0 |
| Long-term debt | $540.0M | $570.0M | $592.5M | $0 |
| Buybacks | $60.7M | $20.0M | $0 | $0 |
SEC XBRL, fiscal years, as known on 2026-10-28
ATMU Stock Sonar score 6/7 axes
Find similar shapesCompareATMU ranks highest on profitability (89th percentile) and risk and compliance (74th), and lowest on financial health (34th), among Autos peers.
6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
ATMU filings, in plain words
Are Atmus Filtration Technologies insiders buying or selling ATMU?
In the 180 days to 2026-10-28, Atmus Filtration Technologies insiders were net sellers, a net $1.6M: $209.5K of purchases and $1.8M of sales reported on Form 4, by 2 buyers and 4 sellers.
Are there planned insider sales of ATMU?
Yes. 1 Form 144 notice of planned insider sales was filed in the 90 days to 2026-10-28, covering $197.0K of stock; the latest, by Swan Renee, was filed 2026-08-17.
Read the full summary
In the 180 days to 2026-10-28, Atmus Filtration Technologies insiders were net sellers of ATMU, a net $1.6M across purchases and sales reported on Form 4 by 2 buyers and 4 sellers. None of the 5 insider sales was flagged as made under a Rule 10b5-1 plan. Insiders filed 1 Form 144 notice of intent to sell in the 90 days to 2026-10-28, covering $197.0K of stock. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.
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