Form 4 for PRLB Proto Labs Inc
Accepted 2026-05-08 16:33:27 ET · period of report 2026-05-07 · accession 0001628280-26-032958 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-05-08 16:33 | 2026-05-07 | PRLB | Kenison Michael R. | Chief Ops Off | M - OptEx | $33.68 | +200 | 27.4K | +0.7% | +$6,736 |
| DT | 2026-05-08 16:33 | 2026-05-07 | PRLB | Kenison Michael R. | Chief Ops Off | S - Sale+OE | $70.00 | -200 | 27.2K | -0.7% | -$14.0K |
| DMT | 2026-05-08 16:33 | 2026-05-07 | PRLB | Kenison Michael R. | Chief Ops Off | M - OptEx | $0.00 | -200 | 7,455 | -3% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-07 | M | A | 100 | $33.84 | 27,286 | D | — | — | (F1) These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025. |
| 2 | Common | Common Stock | 2026-05-07 | M | A | 100 | $33.52 | 27,386 | D | — | — | (F1) These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025. |
| 3 | Common | Common Stock | 2026-05-07 | S | D | 200 | $70.00 | 27,186 | D | — | — | (F1) These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025. |
| 4 | Derivative | Employee Stock Option (right to buy) | 2026-05-07 | M | D | 100 | $0.00 | 7,612 | D | $33.84 · — to 2033-02-14 | 100 Common Stock | (F1) These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025. (F2) 25% of shares subject to the award will vest on February 13, 2024, and on each February 13th thereafter until all shares subject to the award are fully vested. |
| 5 | Derivative | Employee Stock Option (right to buy) | 2026-05-07 | M | D | 100 | $0.00 | 7,455 | D | $33.52 · — to 2034-02-13 | 100 Common Stock | (F1) These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025. (F3) 25% of shares subject to the award will vest on February 13, 2025, and on each February 13th thereafter until all shares subject to the award are fully vested. |