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Walter Siegel

CIK 1342060 · SVP, Gen Counsel & Corp Sec · last filed 2026-07-21

Walter Siegel is a SVP, Gen Counsel & Corp Sec who has filed 73 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for MSM, was dated Jul 21, 2026. Across all open-market trades the lifetime net is −$3.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.9M across reported positions. 38 SEC filings were submitted jointly with HENRY SCHEIN INC.

"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

$3.88M

Companies

3

Total Filings

73

Lifetime Open-Market Net

-$3.35M

Filer Profile

Reported Address
C/O HENRY SCHEIN, INC
135 DURYEA RD
MELVILLE, NY 11747
Related Filers
HENRY SCHEIN INC — 38 joint filings, latest 2025-11-17
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
MSM SVP, Gen Counsel & Corp Sec — $121.41 — $0 1 2026-07-21
HSIC Sr. VP & Chief Legal Officer 43,191 $89.81 $3.88M -$2.88M 33 2025-03-17
STANDARD MICROSYSTEMS CORP (SMSC) Delisted Sr. VP & General Counsel 19,267 — — -$473.0K 35 2012-07-17

Recent Filings

73 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
2026-07-21 MSM Grant (A) — $0 EDGAR
2025-11-17 HSIC Notice (144) −4,176 -$297.7K EDGAR
2025-03-17 HSIC Disp (D) −3,998 $0 EDGAR
2025-03-11 HSIC Grant (A) +9,609 $0 EDGAR
2025-03-04 HSIC Tax (F) −1,946 -$137.8K EDGAR
2024-06-07 HSIC Sell (S) −4,134 -$287.2K EDGAR
2024-06-06 HSIC Notice (144) −4,134 -$287.2K EDGAR
2024-03-05 HSIC Mixed +7,923 -$116.7K EDGAR
2023-06-07 HSIC Sell (S) −5,497 -$407.2K EDGAR
2023-06-05 HSIC Notice (144) −5,497 -$407.2K EDGAR
Showing 1–10 of 73
Page 1 of 8
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.