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NEIL P SIMPKINS

CIK 1275519 · last filed 2026-03-06

NEIL P SIMPKINS is a corporate insider who has filed 15 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for GTES, was dated Mar 6, 2026. Across all open-market trades the lifetime net is −$2.63B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $26.7M 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

$26.74M

Companies

3

Total Filings

15

Lifetime Open-Market Net

-$2.63B

Filer Profile

Reported Address
C/O GATES INDUSTRIAL CORPORATION PLC
1144 FIFTEENTH STREET, SUITE 1400
DENVER, CO 80202
Phone
(303) 744-4876
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
GTES Director 1,044,020 $25.61 $26.74M $12.20M 6 2026-03-06
Summit Materials, Inc. (SUM) Delisted Director 4,168 $52.49 $218.8K $0 2 2018-03-01
ZF TRW AUTOMOTIVE HOLDINGS CORP (TRW) Delisted Director 0 — — -$2.65B 7 2015-05-15

Recent Filings

15 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
2026-03-06 GTES Grant (A) +11,623 $0 EDGAR
2026-03-03 GTES Tax (F) −5 -$138 EDGAR
2025-03-06 GTES Tax (F) −10 -$200 EDGAR
2025-03-04 GTES Grant (A) +12,708 $0 EDGAR
2024-03-06 GTES Grant (A) +18,493 $0 EDGAR
2024-02-20 GTES Buy (P) +1,000,000 $12.20M EDGAR
2018-03-01 Summit Materials, Inc. (SUM) Delisted Mixed +4,098 $0 EDGAR
2017-03-02 Summit Materials, Inc. (SUM) Delisted Grant (A) — $0 EDGAR
2015-05-15 ZF TRW AUTOMOTIVE HOLDINGS CORP (TRW) Delisted Disp (D) −1,638 -$173.0K EDGAR
2013-08-07 ZF TRW AUTOMOTIVE HOLDINGS CORP (TRW) Delisted Sell (S) −10,273,062 -$731.34M EDGAR
Showing 1–10 of 15
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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.