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David A. Dunbar

CIK 1595316 · President/CEO/Chairman · last filed 2026-03-18

David A. Dunbar is a President/CEO/Chairman who has filed 78 SEC Form 4 insider transactions across 2 companies since 2014. The most recent filing, for WTS, was dated Mar 18, 2026. Across all open-market trades the lifetime net is −$22.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $34.3M 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

$34.30M

Companies

2

Total Filings

78

Lifetime Open-Market Net

-$22.64M

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
WTS Director 9,800 $358.09 $3.51M $0 12 2026-03-18
SXI President/CEO/Chairman 95,402 $322.72 $30.79M -$22.64M 58 2026-02-18

Recent Filings

78 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
2026-03-18 WTS Gift (G) +9,800 $0 EDGAR
2026-03-12 WTS Gift (G) −9,800 $0 EDGAR
2026-02-18 SXI Sell (S) −15,000 -$3.84M EDGAR
2026-02-17 SXI Notice (144) −15,000 -$3.91M EDGAR
2025-10-17 SXI Sell (S) −18,000 -$4.23M EDGAR
2025-10-15 SXI Notice (144) −18,000 -$4.23M EDGAR
2025-09-19 SXI Sell (S) −11,000 -$2.37M EDGAR
2025-09-18 SXI Notice (144) −11,000 -$2.37M EDGAR
2025-09-04 SXI Other (J) — $0 EDGAR
2025-08-26 SXI Mixed +13,428 $2.83M EDGAR
Showing 1–10 of 78
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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.