# Proto Labs Inc: Form S-1/A, filed Dec 29, 2011

- Company: [Proto Labs Inc](/companies/prlb.md) (CIK 1443669)
- Form: S-1/A
- Filed: 2011-12-29
- Accepted by EDGAR: Dec 29, 2011, 12:20 ET
- Period: not reported
- Accession: 0001193125-11-355148
- Inline XBRL: no
- Main document: https://www.sec.gov/Archives/edgar/data/1443669/000119312511355148/d199869ds1a.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/1443669/000119312511355148/

## Sections

Sections are extracted only from 10-K and 10-Q reports. Read this filing’s documents on sec.gov. https://www.sec.gov/Archives/edgar/data/1443669/000119312511355148/d199869ds1a.htm

Filed Dec 29, 2011.
Source: SEC EDGAR, the filing index for accession 0001193125-11-355148. Last ingested by Listed: Nov 4, 2026, 18:20 ET. No prices; not investment advice.