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Stephanie Disher

CIK 1976792 · Chief Executive Officer · last filed 2026-06-02

Stephanie Disher is a Chief Executive Officer who has filed 16 SEC Form 4 insider transactions across 2 companies since 2023. The most recent filing shows the insider sold $1.2M of ATMU on Jun 2, 2026. Across all open-market trades the lifetime net is −$1.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $19.3M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$19.27M

Companies

2

Total Filings

16

Lifetime Open-Market Net

-$1.16M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
ATMU Chief Executive Officer 363,024 $51.88 $18.83M -$1.16M 12 2026-06-02
IEX Director 1,880 $230.22 $432.8K $0 3 2026-05-08

Recent Filings

16 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-02 ATMU Sell (S) −25,652 -$1.16M EDGAR
2026-06-01 ATMU Notice (144) −25,652 -$1.16M EDGAR
2026-05-08 IEX Grant (A) +805 $0 EDGAR
2026-04-02 ATMU Grant (A) +31,492 $0 EDGAR
2026-03-03 ATMU Tax (F) −82,493 -$5.32M EDGAR
2026-02-17 ATMU Grant (A) +169,209 $0 EDGAR
2025-05-12 IEX Grant (A) +895 $0 EDGAR
2025-04-03 ATMU Grant (A) +40,021 $0 EDGAR
2025-03-05 ATMU Tax (F) −5,178 -$206.1K EDGAR
2025-02-25 IEX Grant (A) +180 $0 EDGAR
Showing 1–10 of 16
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.