Duane K. Stierhoff is Sr VP & Sparton Medical Systems at SPARTON CORP (SPA). They have made 1 open-market trade across 1 company since 2008, most recently 2010-06-24.
CIK 0001384585
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $21K since 2008, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SPA | 27,721 | — |
Shares reported on the most recent Form 4, priced at the 2010-06-28 close. 1 holding could not be priced and is excluded from the total.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SPA | BUY | 2008-12-08 | 2008-12-11 | $2.05 | $21K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.