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William H Weideman

CIK 1359647 · Exec VP & CFO · last filed 2026-05-05

William H Weideman is an Exec VP & CFO who has filed 39 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for OLN, was dated May 5, 2026. Current disclosed insider exposure totals $9.7M across reported positions. 27 SEC filings were submitted jointly with CHEMICAL CO /DE/ DOW.

"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

$9.71M

Companies

2

Total Filings

39

Lifetime Open-Market Net

$0

Filer Profile

Reported Address
C/O OLIN CORPORATION
190 CARONDELET PLZ, STE 1530
CLAYTON, MO 63105
Related Filers
CHEMICAL CO /DE/ DOW — 27 joint filings, latest 2014-03-11
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
OLN Director 13,140 $17.37 $228.2K $0 13 2026-05-05
DOW Exec VP & CFO 321,988 $29.44 $9.48M $0 26 2014-03-11

Recent Filings

39 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
2026-05-05 OLN Grant (A) — $0 EDGAR
2025-05-05 OLN Grant (A) — $0 EDGAR
2024-05-03 OLN Grant (A) +761 $40.0K EDGAR
2023-05-03 OLN Grant (A) +727 $40.0K EDGAR
2022-05-04 OLN Grant (A) +679 $40.0K EDGAR
2021-03-03 OLN Grant (A) +1,242 $40.0K EDGAR
2020-03-04 OLN Grant (A) +2,460 $40.0K EDGAR
2019-03-05 OLN Grant (A) +1,568 $40.0K EDGAR
2018-03-05 OLN Grant (A) +1,237 $40.0K EDGAR
2017-03-03 OLN Grant (A) +1,250 $40.0K EDGAR
Showing 1–10 of 39
Page 1 of 4
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.