Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Proto Labs IncPRLB · Entity 4553 | Director | May 19, 2026 | May 21, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Proto Labs Inc
Report date May 19, 2026 · Filed May 21, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 26,863 |
Reported balance
After 2026-05-19 transaction · row 1
1 source rowRow 1 · 2026-05-19 · Grant · Acquired 2,210 · Balance 26,863 F1: Restricted stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders. |
Filing footnotes · ownership attribution and instrument terms
F1: Restricted stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 19, 2026 Filed May 21, 2026 20:04 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 2,210 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-26-037232 · wk-form4_1779393889.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 26,863 F1 · shares: Restricted stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders. Read SEC document |
| May 23, 2025 Filed May 28, 2025 21:49 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 3,939 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-028217 · wk-form4_1748468973.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 24,653 F1 · shares: Restricted stock units that vest in full on the first anniversary of the grant date. Read SEC document |
| May 23, 2024 Filed May 24, 2024 20:22 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 4,701 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-24-018335 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,714 F1 · shares: Restricted stock units ("RSUs") that vest in full on the date of the 2025 Annual Meeting of Shareholders, provided that the date of the 2025 Annual Meeting of Shareholders is at least 50 weeks after the date of the grant. Read SEC document |
| May 17, 2023 Filed May 19, 2023 20:10 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 4,513 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-23-015287 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,013 F1 · shares: Restricted stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the Company's 2024 annual meeting of shareholders. Read SEC document |
| August 30, 2022 Filed Sep 1, 2022 23:04 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 3,236 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-22-021717 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 11,500 F1 · shares: The restricted stock units vest in full on the earlier of the first anniversary of the grant date or the date of the Company's 2023 annual meeting of shareholders. Read SEC document |
| May 18, 2022 Filed May 20, 2022 20:27 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 3,236 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-22-013221 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 11,500 F1 · shares: The restricted stock units vest in full on the earlier of the first anniversary of the grant date or the date of the Company's 2023 annual meeting of shareholders. Read SEC document |
| May 18, 2021 Filed May 20, 2021 20:54 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,520 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-21-012942 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,264 F1 · shares: The restricted stock units vest in full on the earlier of the first anniversary of the grant date or the date of the Company's 2022 annual meeting of shareholders. Read SEC document |
| May 19, 2020 Filed May 21, 2020 20:52 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,197 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-20-011578 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,744 F1 · shares: The restricted stock units vest in full on the earlier of May 19, 2021 or the date of the Company's 2021 annual meeting of shareholders. Read SEC document |
| May 15, 2019 Filed May 17, 2019 20:31 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,311 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-19-010404 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,547 F1 · shares: The restricted stock units vest in full on the earlier of May 15, 2020 or the date of the Company's 2020 annual meeting of shareholders. Read SEC document |
| May 16, 2018 Filed May 18, 2018 20:45 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,064 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-18-010367 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,236 F1 · shares: The restricted stock units vest in full on the earlier of May 16, 2019 or the date of the Company's 2019 annual meeting of shareholders. Read SEC document |
| May 18, 2017 Filed May 22, 2017 22:29 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,586 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-17-009853 · rdgdoc.xml · nonDerivative · entry 2 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,304 Read SEC document |
| May 18, 2017 Filed May 22, 2017 22:29 UTC | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,586 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-17-009853 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,718 F1 · shares: The restricted stock units vest in full on the earlier of 5/18/18 or the date of the Company's 2018 annual meeting of shareholders. Read SEC document |
| May 18, 2017 Filed May 25, 2017 18:06 UTC Amendment | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,586 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-17-010069 · rdgdoc.xml · nonDerivative · entry 2 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,172 F2 · balance_after: The reporting person's Form 4 filed on May 22, 2017, inadvertently overstated the reporting person's direct holdings by 7,132 shares. Read SEC document |
| May 18, 2017 Filed May 25, 2017 18:06 UTC Amendment | Proto Labs Inc PRLB · Entity 4553 | GrantCommon Stock | 1,586 | $0.00 | $0.00 |
DisclosureSEC source: 0001437749-17-010069 · rdgdoc.xml · nonDerivative · entry 1 KRANTZ DONALD G · CIK 0001183159 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,586 F1 · shares: The restricted stock units vest in full on the earlier of 5/18/18 or the date of the Company's 2018 annual meeting of shareholders. F2 · balance_after: The reporting person's Form 4 filed on May 22, 2017, inadvertently overstated the reporting person's direct holdings by 7,132 shares. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.