Paul Kellenberger is CEO at zSpace, Inc. (ZSPC). They have made 8 open-market trades across 1 company since 2025, most recently 2026-10-01.
CIK 0002032765
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.
0 open-market purchases, against 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ZSPC | 7,019 | $2K |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close.
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 | $2K | +1722.5% | +178.7% | +178.7% |
| ZSPC | SELL | 2026-01-06 | 2026-01-07 | $0.52 | $6K | -5.5% | -29.6% | -79.7% |
| ZSPC | SELL | 2025-10-06 | 2025-10-08 | $0.99 | $11K | +0.0% | -34.1% | -57.8% |
| ZSPC | SELL | 2025-07-16 | 2025-07-17 | $2.63 | $4K | +1.1% | -21.2% | -57.6% |
| ZSPC | SELL | 2025-07-14 | 2025-07-16 | $2.78 | $8K | +11.5% | -14.5% | -56.9% |
| ZSPC | SELL | 2025-07-10 | 2025-07-14 | $2.79 | $8K | +20.6% | -9.3% | -54.6% |
| ZSPC | SELL | 2025-07-08 | 2025-07-10 | $2.99 | $8K | +1.0% | -19.9% | -62.6% |
| ZSPC | SELL | 2025-07-03 | 2025-07-08 | $2.98 | $8K | -12.6% | -37.1% | -69.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.