Proto Labs INC Schedule 13G passive stakes

Disciplined Growth Investors Inc. has reported an increase in its beneficial ownership of Proto Labs Inc. common stock to 10.0%, holding 2,380,514 shares.

Vanguard Capital Management has reported a beneficial ownership of 5.1% in Proto Labs Inc. common stock as of March 31, 2026.

Vanguard Portfolio Management has reported a beneficial ownership of 6.51% in Proto Labs Inc. common stock as of March 31, 2026.

The Vanguard Group reported a 0% beneficial ownership in Proto Labs Inc. common stock following an internal realignment.

Disciplined Growth Investors, Inc. has disclosed a 10.9% beneficial ownership stake in Proto Labs Inc. common stock.

Disciplined Growth Investors, Inc. has reported a significant passive stake of 11.4% in Proto Labs Inc., holding over 2.7 million common shares.

BlackRock, Inc. has filed an amendment to its Schedule 13G, revealing a 15.0% beneficial ownership stake in PROTO LABS INC common stock.

Disciplined Growth Investors, Inc. has reported an 11.2% beneficial ownership stake in Proto Labs Inc., held for investment purposes as of March 31, 2025.

Disciplined Growth Investors, Inc. has filed an Amendment No. 4 to its Schedule 13G, disclosing a beneficial ownership of 8.9% of Proto Labs Inc.'s common stock as of December 31, 2024.

Dimensional Fund Advisors LP reports beneficial ownership of 5.3% of Proto Labs Inc's common stock as of December 31, 2024, primarily through investment advisory roles.