David A. Dunbar

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

"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 · Page 6 of 8

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
2019-07-30 WTS Grant (A) +1,381 $0 EDGAR
2018-11-27 SXI Grant (A) +6,229 $0 EDGAR
2018-09-10 SXI Mixed +8,418 $52.3K EDGAR
2018-09-04 SXI Tax (F) −2,742 -$295.1K EDGAR
2018-08-28 SXI Mixed +2,639 -$95.2K EDGAR
2018-07-31 WTS Grant (A) +1,356 $0 EDGAR
2018-03-26 SXI Sell (S) −4,000 -$405.7K EDGAR
2017-09-12 SXI Mixed +629 -$420.6K EDGAR
2017-09-12 SXI Mixed +2,531 $66.0K EDGAR
2017-09-08 SXI Grant (A) +7,003 $0 EDGAR
Showing 5160 of 78
Page 6 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.