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JOHN J KORALESKI

CIK 1200010 · CHAIRMAN OF THE BOARD · last filed 2026-03-02

JOHN J KORALESKI is a CHAIRMAN OF THE BOARD who has filed 103 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing shows the insider was granted $46.7K of MLM on Mar 2, 2026. Across all open-market trades the lifetime net is −$3.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $134.9M 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

$134.93M

Companies

2

Total Filings

103

Lifetime Open-Market Net

-$3.16M

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
MLM Director 10,822 $504.92 $5.46M $1.38M 48 2026-03-02
UNP CHAIRMAN OF THE BOARD 445,486 $290.62 $129.47M -$4.54M 55 2015-03-11

Recent Filings

103 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
2026-03-02 MLM Grant (A) +69 $46.7K EDGAR
2025-12-01 MLM Grant (A) +75 $46.7K EDGAR
2025-09-02 MLM Grant (A) +76 $46.8K EDGAR
2025-06-03 MLM Grant (A) +85 $46.5K EDGAR
2025-05-16 MLM Grant (A) +308 $170.3K EDGAR
2025-03-03 MLM Grant (A) +96 $46.4K EDGAR
2024-12-03 MLM Grant (A) +78 $46.8K EDGAR
2024-09-03 MLM Grant (A) +87 $46.5K EDGAR
2024-06-04 MLM Grant (A) +81 $46.4K EDGAR
2024-05-17 MLM Grant (A) +293 $170.4K EDGAR
Showing 1–10 of 103
Page 1 of 11
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.