DAVID T RIDDIFORD
CIK 1111768 · last filed 2016-11-29
"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
$19.61M
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 | $220.25 | $19.61M | -$396.8K | 17 | 2016-11-29 |
| DATAWATCH CORP (DWCH) Delisted | Director | 19,242 | — | — | $0 | 4 | 2009-03-24 |
Recent Filings · Page 2 of 3
21 filingsInsider 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 |
|---|---|---|---|---|---|
| 2009-06-26 | VICR | Grant (A) | — | $0 | EDGAR |
| 2009-04-23 | VICR | Gift (G) | −1,500 | -$8.4K | EDGAR |
| 2009-03-24 | DATAWATCH CORP (DWCH) Delisted | Grant (A) | +2,500 | $0 | EDGAR |
| 2008-12-12 | VICR | Gift (G) | −4,000 | -$17.8K | EDGAR |
| 2008-06-27 | VICR | Grant (A) | — | $0 | EDGAR |
| 2008-06-10 | VICR | Mixed | −1,000 | -$24.1K | EDGAR |
| 2008-03-14 | DATAWATCH CORP (DWCH) Delisted | Grant (A) | +2,500 | $0 | EDGAR |
| 2008-01-29 | DATAWATCH CORP (DWCH) Delisted | Exer (M) | +7,112 | $38.8K | EDGAR |
| 2007-06-21 | VICR | Grant (A) | — | $0 | EDGAR |
| 2007-06-01 | VICR | Mixed | — | -$16.9K | EDGAR |
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.
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.