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Walter L. Nelson

CIK 2039716 · Sr. VP, Glob Helium & Rare Gas · last filed 2025-03-06

Walter L. Nelson is a Sr. VP, Glob Helium & Rare Gas who has filed 3 SEC Form 4 insider transactions across 1 company since 2024. The most recent filing shows the insider sold $181.7K of APD on Mar 6, 2025. Across all open-market trades the lifetime net is −$181.7K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $274.5K 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

$274.5K

Companies

1

Total Filings

3

Lifetime Open-Market Net

-$181.7K

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
APD Sr. VP, Glob Helium & Rare Gas 899 $305.32 $274.5K -$181.7K 2 2025-03-06

Recent Filings

3 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
2025-03-06 APD Sell (S) −589 -$181.7K EDGAR
2025-03-05 APD Notice (144) −589 -$181.7K EDGAR
2024-12-04 APD Mixed +332 -$40.4K EDGAR
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.