David Cecil Vanston

CIK 1703012 · Chief Financial Officer · last filed 2025-10-08

David Cecil Vanston is a Chief Financial Officer who has filed 8 SEC Form 4 insider transactions across 2 companies since 2017. The most recent filing, for TOMZ, was dated Oct 8, 2025. Across all open-market trades the lifetime net is +$7.8K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $75.6K 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

$75.6K

Companies

2

Total Filings

8

Lifetime Open-Market Net

$7.8K

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
TOMZ Chief Financial Officer 100,000 $0.72 $71.8K $0 1 2025-10-08
VNRX Chief Financial Officer 2,750 $1.38 $3.8K $7.8K 7 2020-12-23

Recent Filings

8 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2025-10-08 TOMZ Grant (A) +100,000 $0 EDGAR
2020-12-23 VNRX Gift (G) $0 EDGAR
2020-04-15 VNRX Grant (A) $0 EDGAR
2019-12-18 VNRX Mixed $0 EDGAR
2019-02-13 VNRX Grant (A) $0 EDGAR
2018-01-25 VNRX Grant (A) $0 EDGAR
2017-09-19 VNRX Buy (P) +2,750 $7.8K EDGAR
2017-04-11 VNRX Grant (A) $0 EDGAR
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.