ATMUAtmus Filtration Technologies Inc.Consumer Cyclical · Auto - Partsas of 2026-09-16
Horizon

Issued 2026-09-16 at $44.27 · now $44.27 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, ATMU has typically landed between $38.97 and $51.63 — a range of −12.0% to +16.6% from the issuance price $44.27.

Range of outcomes in historically similar periods — not a price prediction. Ranges are scored publicly on /methodology.
  • Actual close
  • Typical path (median)
  • Middle 50% of outcomes
  • 90% range

808 overlapping 1 month windows · 2023-05-26 – 2026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.7–56.1%, ≈1,408 obs).

The cone is anchored at the 2026-09-16 issuance close ($44.27) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.

Where ATMU has typically landed a month from the 2026-09-16 close of $44.27 — the range is history, not a prediction.

$38.97worst · -12.0%$51.63best · +16.6%
  • now $44.27 (+0.0%)
  • typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $45.55 (+2.9%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $42.4–$48.71
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $38.97–$51.63
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 808 windows spanning 2023-05-26 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
StartReturnMax dropMax rise
3 worst
2026-04-30−27.8%−27.8%+0.0%
2026-04-20−23.3%−23.3%+0.6%
2026-04-29−22.7%−22.7%+4.7%
3 best
2024-03-04+43.3%−0.3%+43.3%
2024-03-06+43.1%+0.0%+43.8%
2024-03-05+40.1%−0.1%+43.6%

808 overlapping windows · 2023-05-26 – 2026-09-16 · not cherry-picked

Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.

iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~4 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.
Jan
67%
+4.5%
n=3
Feb
67%
+4.5%
n=3
Mar
33%
+5.2%
n=3
Apr
33%
−0.0%
n=3
May
67%
−6.8%
n=3
Jun
75%
+2.4%
n=4
Jul
100%
+6.0%
n=4
Aug
50%
+4.8%
n=4
Sep
50%
−2.5%
n=4
Oct
67%
−1.8%
n=3
Nov
100%
+13.1%
n=3
Dec
67%
+0.1%
n=3

Up-frequency and average month-over-month return · historical frequency, not a prediction

Reported insider & political trades

Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.

Share price & reported tradesMonthly open-market valueReporting lag — trade date to filing date2026-092026-082026-072026-062026-052026-042026-032026-022026-012025-122025-112025-102025-092025-08$66$422026-08-17: 1 insider sale, $197K — Swan Renee2026-08-12: 1 insider purchase, $100K — Macadam Stephen E.2026-06-01: 4 insider sales, $1.6M — Disher Stephanie, Kienzler Jack, Masters Charles, Swan Renee2026-05-12: 3 insider purchases, $110K — HAGGERTY GRETCHEN R …2025-11-13: 1 insider sale, $977 — Donoso Diego2025-09-05: 1 insider purchase, $687 — Donoso Diego2025-08-13: 1 insider purchase, $1K — Donoso Diego2025-08: 1 open-market purchase, $1K2025-09: 1 open-market purchase, $6872025-11: 1 open-market sale, $9772026-05: 3 open-market purchases, $110K2026-06: 4 open-market sales, $1.6M2026-08: 1 open-market purchase, $100K2026-08: 1 open-market sale, $197K↑ buys↓ salesofficer Swan Renee — Sale on 2026-08-17, filed 1 day after the tradedirector Macadam Stephen E. — Purchase on 2026-08-12, filed 1 day after the tradedirector Disher Stephanie — Sale on 2026-06-01, filed 1 day after the tradeofficer Kienzler Jack — Sale on 2026-06-01, filed 1 day after the tradeofficer Masters Charles — Sale on 2026-06-01, filed 1 day after the tradeofficer Swan Renee — Sale on 2026-06-01, filed 1 day after the tradedirector HAGGERTY GRETCHEN R — Purchase on 2026-05-12, filed 1 day after the tradedirector HAGGERTY GRETCHEN R — Purchase on 2026-05-12, filed 1 day after the tradedirector HAGGERTY GRETCHEN R — Purchase on 2026-05-12, filed 1 day after the tradedirector Donoso Diego — Sale on 2025-11-13, filed 6 days after the tradedirector Donoso Diego — Purchase on 2025-09-05, filed 75 days after the tradedirector Donoso Diego — Purchase on 2025-08-13, filed 98 days after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-08-17Swan ReneeofficerSale3,870 @ $50.89$197K−7.6% of holding−11.0%not yet — horizon still open46,875Form 4 · filed 1 day after the trade
2026-08-12Macadam Stephen E.directorPurchase2,000 @ $49.78$100K+5.2% of holding−7.8%not yet — horizon still open40,588Form 4 · filed 1 day after the trade
2026-06-01Disher StephaniedirectorSale25,652 @ $45.25$1.2M−6.6% of holding+10.1%not yet — horizon still open363,024Form 4 · filed 1 day after the trade
2026-06-01Kienzler JackofficerSale5,132 @ $45.25$232K−6.3% of holding+10.1%not yet — horizon still open75,804Form 4 · filed 1 day after the trade
2026-06-01Masters CharlesofficerSale2,890 @ $45.25$131K−6.2% of holding+10.1%not yet — horizon still open43,579Form 4 · filed 1 day after the trade
2026-06-01Swan ReneeofficerSale2,566 @ $45.25$116K−4.8% of holding+10.1%not yet — horizon still open50,745Form 4 · filed 1 day after the trade
2026-05-12HAGGERTY GRETCHEN RdirectorPurchase1,872 @ $55.74$104K+7.8% of holding−13.0%not yet — horizon still open25,741Form 4 · filed 1 day after the trade
2026-05-12HAGGERTY GRETCHEN RdirectorPurchase100 @ $55.71$6K+0.4% of holding−13.0%not yet — horizon still open23,868Form 4 · filed 1 day after the trade
2026-05-12HAGGERTY GRETCHEN RdirectorPurchase1 @ $55.74$56+0.0% of holding−13.0%not yet — horizon still open23,869Form 4 · filed 1 day after the trade
2025-11-13Donoso DiegodirectorSale20 @ $48.84$977−0.2% of holding+8.1%−7.0%9,058Form 4 · filed 6 days after the trade
2025-09-05Donoso DiegodirectorPurchase15 @ $45.81$687+0.2% of holding−8.3%+21.2%9,078Form 4 · filed 75 days after the trade
2025-08-13Donoso DiegodirectorPurchase25 @ $45.00$1K+0.3% of holding−0.1%+30.3%9,063Form 4 · filed 98 days after the trade
2025-04-02Donoso DiegodirectorSale40 @ $37.79$2K−0.4% of holding−5.1%−2.1%9,038Form 4 · filed 231 days after the trade

The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.

50 award / exercise / gift records — not counted as purchases

Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.

DatePersonRoleActionSharesOwned afterFiling
2026-05-12Sharp HeathdirectorAward / grant2,6195,733Form 4
2026-05-12Bennett Roy EdwindirectorAward / grant2,61919,320Form 4
2026-05-12Donoso DiegodirectorAward / grant2,61911,697Form 4
2026-05-12TAYLOR STUART A IIdirectorAward / grant2,61911,697Form 4
2026-05-12Carpenter Kevin NofficerAward / grant28,50928,509Form 4
2026-05-12Leipold Jane AdirectorAward / grant2,61920,538Form 4
2026-05-12Macadam Stephen E.directorAward / grant2,61938,588Form 4
2026-05-12HAGGERTY GRETCHEN RdirectorAward / grant2,61928,360Form 4
2026-04-01Kienzler JackofficerAward / grant5,16380,936Form 4
2026-04-01Heltebran LauraofficerAward / grant3,71724,161Form 4
2026-04-01Disher StephaniedirectorAward / grant31,492388,676Form 4
2026-04-01Masters CharlesofficerAward / grant4,13046,469Form 4
2026-04-01Swan ReneeofficerAward / grant1,96253,311Form 4
2026-02-27Disher StephaniedirectorWithheld for tax66,639373,038Form 4
2026-02-27Kienzler JackofficerWithheld for tax16,26679,624Form 4
2026-02-27Disher StephaniedirectorWithheld for tax15,854357,184Form 4
2026-02-27Swan ReneeofficerWithheld for tax9,57053,603Form 4
2026-02-27Masters CharlesofficerWithheld for tax9,04644,470Form 4
2026-02-27Kienzler JackofficerWithheld for tax3,85175,773Form 4
2026-02-27Swan ReneeofficerWithheld for tax2,25451,349Form 4
2026-02-27Masters CharlesofficerWithheld for tax2,13142,339Form 4
2026-02-13Swan ReneeofficerAward / grant18,53663,173Form 4
2026-02-13Disher StephaniedirectorAward / grant169,209439,677Form 4
2026-02-13Masters CharlesofficerAward / grant21,15253,516Form 4
2026-02-13Kienzler JackofficerAward / grant41,09495,890Form 4
2026-02-05Sharp HeathdirectorAward / grant6143,114Form 4
2025-11-18Donoso DiegodirectorOther acquisition209,078Form 4
2025-10-03Masters CharlesofficerWithheld for tax2832,364Form 4
2025-10-03Kienzler JackofficerWithheld for tax2554,796Form 4
2025-08-14Swan ReneeofficerWithheld for tax5,00744,637Form 4
2025-05-20TAYLOR STUART A IIdirectorAward / grant3,8869,078Form 4
2025-05-20Leipold Jane AdirectorAward / grant3,88617,919Form 4
2025-05-20HAGGERTY GRETCHEN RdirectorAward / grant3,88623,768Form 4
2025-05-20Donoso DiegodirectorAward / grant3,8869,078Form 4
2025-05-20Bennett Roy EdwindirectorAward / grant3,88616,701Form 4
2025-05-20Macadam Stephen E.directorAward / grant3,88635,969Form 4
2025-05-13Heltebran LauraofficerAward / grant20,44420,444Form 4
2025-04-01Kienzler JackofficerAward / grant6,80454,821Form 4
2025-04-01Masters CharlesofficerAward / grant4,40232,392Form 4
2025-04-01Disher StephaniedirectorAward / grant40,021270,468Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.

Congressional disclosures

No congressional trades disclosed for this company.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.