Figures computed from official regulatory filings — .
Ownershipinsiders 75.92% · institutions 0%
In USD · as of Oct 5, 2026
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Sandston Corporation does not have significant operations. The company intends to acquire and/or invest in and operate strategically positioned companies in multiple industry groups. Previously, it was involved in the design, manufacture, and marketing of environmentally ruggedized computers and computer displays; design, development, and marketing of software for use in factory automation and control, and in test and measurement environments; and provision of application engineering support to customers of its own and third parties' products. The company was formerly known as Nematron Corporation and changed its name to Sandston Corporation in April 2004. The company was incorporated in 1983 and is based in Traverse City, Michigan. Sandston Corporation is a subsidiary of Dorman Industries, LLC.
Market information source · Oct 5, 2026
Periods recorded in the consulted sources. These do not certify the legal dates of name changes.
SEC company identity · Oct 5, 2026
Open-market timeline · full history
2 buys29 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| DEFIORE LAWRENCE J | Buy | $20K | conv 36First in 12mo |
| SEC |
| DORMAN DANIEL J | Buy | $30K | conv 27First in 12mo | SEC |
| BRAUN HUGO | BuyD (derivative) | $7.2B | First in 12mo | SEC |
| BRAUN HUGO | BuyD (derivative) | $36B | First in 12mo | SEC |
| SIERK DENNIS A | Sell | $44.7K | SEC |
| SIERK DENNIS A | Sell | $7.3K | SEC |
| SIERK DENNIS A | Sell | $15.5K | SEC |
| SIERK DENNIS A | Sell | $71.8K | Unusual size | SEC |
| SIERK DENNIS A | Sell | $4.4K | SEC |
| SIERK DENNIS A | Sell | $66.1K | Unusual size | SEC |
| SIERK DENNIS A | Sell | $2.4K | SEC |
| SIERK DENNIS A | Sell | $15.6K | SEC |
| SIERK DENNIS A | Sell | $2.4K | SEC |
| SIERK DENNIS A | Sell | $5K | SEC |
| SIERK DENNIS A | Sell | $34.5K | SEC |
| SIERK DENNIS A | Sell | $184 | SEC |
| SIERK DENNIS A | Sell | $15.4K | SEC |
| SIERK DENNIS A | Sell | $1.9K | SEC |
| SIERK DENNIS A | Sell | $100 | SEC |
| SIERK DENNIS A | Sell | $320 | SEC |
| SIERK DENNIS A | Sell | $1.8K | SEC |
| SIERK DENNIS A | Sell | $680 | SEC |
| SIERK DENNIS A | Sell | $180 | SEC |
| SIERK DENNIS A | Sell | $6K | SEC |
| SIERK DENNIS A | Sell | $496 | SEC |