---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-21-028308"
form_type: "8-K"
ticker: "PRLB"
cik: "0001443669"
company_name: "Proto Labs Inc"
filed_at: "2021-12-10T23:59:59+00:00"
generated_at: "2026-06-28T02:02:04.424591+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Proto Labs increases stock repurchase authorization by $50M to $150M total

## Summary
- Board approved $50M increase on Dec 8, 2021; total authorization now $150M through Dec 31, 2023.
- As of Dec 7, 2021, company had repurchased $87M, leaving $63M available under expanded program.
- Capital allocation strategy unchanged: prioritize organic investment, R&D, M&A, then opportunistic buybacks.

## SEC filing metadata
- accession: 0001437749-21-028308
- form_type: 8-K
- ticker: PRLB
- cik: 0001443669
- company_name: Proto Labs Inc
- filed_at: 2021-12-10T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1443669/000143774921028308/0001437749-21-028308-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1443669/000143774921028308/prlb20211208_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-21-028308
- JSON: https://secwatch.observer/filing/0001437749-21-028308.json
- Plain text: https://secwatch.observer/filing/0001437749-21-028308.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.