North Bridge Growth Management, L.P.

Related Filers (7)

Ownership (5)

4
Monday, 2/25/2013
Proto Labs Inc: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/21/2012
Proto Labs Inc: Statement of changes in beneficial ownership of securities
4
Friday, 8/24/2012
Proto Labs Inc: Statement of changes in beneficial ownership of securities
4
Thursday, 3/1/2012
Proto Labs Inc: Statement of changes in beneficial ownership of securities
3
Thursday, 2/23/2012
Proto Labs Inc: Initial statement of beneficial ownership of securities
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