Michael S. Harper is See remarks at zSpace, Inc. (ZSPC). They have made 8 open-market trades across 3 companies since 2011, most recently 2026-10-01.
CIK 0001140247
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.
4 open-market purchases totalling $108K since 2011, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ZSPC | 4,135 | $974 |
| MDNB | 28,577 | — |
| MDNBD | 23,735 | — |
| Total | $974 |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close. 2 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ZSPC | SELL | 2026-04-07 | 2026-04-08 | $0.07 | $561 | +1722.5% | +178.7% | +178.7% |
| ZSPC | SELL | 2026-01-06 | 2026-01-07 | $0.52 | $2K | -5.5% | -29.6% | -79.7% |
| ZSPC | SELL | 2025-10-06 | 2025-10-08 | $0.99 | $4K | +0.0% | -34.1% | -57.8% |
| ZSPC | SELL | 2025-07-11 | 2025-07-15 | $2.77 | $12K | +8.3% | -8.6% | -52.5% |
| MDNB | BUY | 2011-12-09 | 2011-12-13 | $13.65 | $2K | N/A | N/A | N/A |
| MDNB | BUY | 2011-11-09 | 2011-11-10 | $13.50 | $5K | N/A | N/A | N/A |
| MDNB | BUY | 2011-08-16 | 2011-08-17 | $12.45 | $1K | N/A | N/A | N/A |
| MDNBD | BUY | 2011-01-04 | 2011-01-06 | $10.00 | $100K | 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.