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DAVID T RIDDIFORD

CIK 1111768 · last filed 2016-11-29

DAVID T RIDDIFORD is a corporate insider who has filed 21 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing shows the insider sold $148.3K of VICR on Nov 29, 2016. Across all open-market trades the lifetime net is −$396.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $19.3M 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

$19.29M

Companies

2

Total Filings

21

Lifetime Open-Market Net

-$396.8K

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
VICR Director 89,027 $216.68 $19.29M -$396.8K 17 2016-11-29
DATAWATCH CORP (DWCH) Delisted Director 19,242 — — $0 4 2009-03-24

Recent Filings

21 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
2016-11-29 VICR Sell (S) −10,000 -$148.3K EDGAR
2016-06-20 VICR Grant (A) — $0 EDGAR
2015-06-22 VICR Grant (A) — $0 EDGAR
2013-06-24 VICR Grant (A) — $0 EDGAR
2013-06-19 VICR Mixed — $0 EDGAR
2012-06-22 VICR Grant (A) — $0 EDGAR
2011-06-24 VICR Grant (A) — $0 EDGAR
2011-03-09 VICR Mixed — -$30.8K EDGAR
2010-11-03 VICR Mixed — -$38.0K EDGAR
2010-06-25 VICR Grant (A) — $0 EDGAR
Showing 1–10 of 21
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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.