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PRLB - As of 09/23/24, 01:42:12 PM: 49 Insider Transactions. Sector: Industrial Goods Industry: Machine Tools & Accessories Prev Close:$59.79 Avg Vol(3m): 361,300 P/E: 33.70 EPS: 1.77 Email this page to a friend. Insider Transactions for PRLB

Buy/Sell*	Filed Date	Subject	Symbol	Acquirer	Pct Owned	Details
B	2020-10-09 14:04:41.0	Proto Labs Inc	PRLB	ARK Investment Management LLC	11.59%	view
B	2020-02-14 09:47:54.0	Proto Labs Inc	PRLB	BROWN CAPITAL MANAGEMENT LLC	14.16%	view
B	2020-02-11 19:35:11.0	Proto Labs Inc	PRLB	VANGUARD GROUP INC	10.02%	view
S	2020-02-05 15:49:31.0	Proto Labs Inc	PRLB	RIVERBRIDGE PARTNERS LLC	5.64%	view
B	2020-02-04 12:30:25.0	Proto Labs Inc	PRLB	BlackRock Inc	15.6%	view
B	2019-03-11 07:51:35.0	Proto Labs Inc	PRLB	VANGUARD GROUP INC	10.02%	view
S	2019-02-14 09:49:31.0	Proto Labs Inc	PRLB	BROWN CAPITAL MANAGEMENT LLC	13.71%	view
B	2019-02-12 11:58:45.0	Proto Labs Inc	PRLB	VANGUARD GROUP INC	9.85%	view
B	2019-01-31 14:09:43.0	Proto Labs Inc	PRLB	BlackRock Inc	14.8%	view
S	2019-01-25 10:50:16.0	Proto Labs Inc	PRLB	RIVERBRIDGE PARTNERS LLC	5.75%	view
S	2019-01-15 15:09:26.0	Proto Labs Inc	PRLB	LUKIS LAWRENCE J	4.82%	view
S	2018-02-14 10:02:47.0	Proto Labs Inc	PRLB	LUKIS LAWRENCE J	6.7%	view
B	2018-02-14 09:44:45.0	Proto Labs Inc	PRLB	BROWN CAPITAL MANAGEMENT LLC	14.62%	view
S	2018-02-14 09:33:33.0	Proto Labs Inc	PRLB	TimesSquare Capital Management	n/a	view
B	2018-02-12 08:49:23.0	Proto Labs Inc	PRLB	VANGUARD GROUP INC	8.43%	view
B	2018-01-29 10:23:54.0	Proto Labs Inc	PRLB	RIVERBRIDGE PARTNERS LLC	11.37%	view
S	2019-02-08 16:22:14.0	PIPER JAFFRAY COMPANIES	PJC	VANGUARD GROUP INC	9.79%	view
B	2019-01-31 14:05:43.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	15.2%	view
B	2018-08-08 16:48:20.0	PIPER JAFFRAY COMPANIES	PJC	VANGUARD GROUP INC	10.73%	view
B	2018-02-09 16:56:47.0	PIPER JAFFRAY COMPANIES	PJC	VANGUARD GROUP INC	8.87%	view
S	2018-02-09 07:35:16.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS LP	4.93%	view
B	2018-01-19 13:58:47.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	12.6%	view
B	2017-02-10 19:00:19.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS LP	5.23%	view
B	2017-01-17 12:47:24.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	7.73%	view
S	2016-02-09 14:17:50.0	PIPER JAFFRAY COMPANIES	PJC	PRICE T ROWE ASSOCIATES INC	0.0%	view
B	2016-01-08 17:08:42.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	10.1%	view
B	2015-02-13 09:23:48.0	PIPER JAFFRAY COMPANIES	PJC	PRICE T ROWE ASSOCIATES INC	7.45%	view
S	2015-02-05 09:21:57.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS LP	9.5%	view
B	2014-02-11 15:18:03.0	PIPER JAFFRAY COMPANIES	PJC	VANGUARD GROUP INC	7.1%	view
B	2014-02-10 16:14:01.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS LP	10.2%	view
S	2013-02-13 09:26:21.0	PIPER JAFFRAY COMPANIES	PJC	VANGUARD GROUP INC	3.39%	view
B	2013-02-07 18:51:59.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	7.38%	view
B	2013-02-04 15:05:02.0	PIPER JAFFRAY COMPANIES	PJC	PRICE T ROWE ASSOCIATES INC	0.0%	view
B	2012-02-10 13:36:04.0	PIPER JAFFRAY COMPANIES	PJC	Bank of New York Mellon CORP	5.04%	view
S	2011-02-11 11:50:07.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	7.84%	view
S	2010-02-12 16:29:00.0	PIPER JAFFRAY COMPANIES	PJC	ADVISORY RESEARCH INC	0.0%	view
B	2010-02-08 10:21:36.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	8.41%	view
S	2009-02-11 11:33:54.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS INC	5.14%	view
S	2009-02-05 13:33:33.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	2.15%	view
B	2008-09-10 15:02:31.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	6.876%	view
B	2008-02-12 10:25:51.0	PIPER JAFFRAY COMPANIES	PJC	PRICE T ROWE ASSOCIATES INC	12.53%	view
B	2008-02-06 12:06:57.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS INC	5.74%	view
S	2007-02-13 14:59:49.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	10.34%	view
S	2007-02-08 19:43:34.0	PIPER JAFFRAY COMPANIES	PJC	DIMENSIONAL FUND ADVISORS INC	5.49%	view
B	2007-01-23 16:43:58.0	PIPER JAFFRAY COMPANIES	PJC	BlackRock Inc	12.13%	view
B	2006-10-10 12:38:48.0	PIPER JAFFRAY COMPANIES	PJC	PNC FINANCIAL SERVICES GROUP INC	10.22%	view
S	2006-02-14 00:00:00.0	PIPER JAFFRAY COMPANIES	PJC	TCW GROUP INC	0.8%	view
B	2006-02-10 00:00:00.0	PIPER JAFFRAY COMPANIES	PJC	BARCLAYS PLC	5.98%	view
B	2006-01-26 00:00:00.0	PIPER JAFFRAY COMPANIES	PJC	TCW GROUP INC	5.8%	view

* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.