Discovery Group I, LLC

10% owner at TESSCO TECHNOLOGIES INC · on record since Mar 24, 2006
10% owner at ELECTRONIC CLEARING HOUSE INC · on record since Oct 31, 2006
10% owner at NATIONAL MEDICAL HEALTH CARD SYSTEMS INC · on record since Nov 29, 2006
10% owner at CSI MINNESOTA, INC. · on record since Oct 28, 2011
10% owner at OPENTV CORP · on record since Nov 23, 2007
10% owner at HAWK CORP · on record since Oct 9, 2007
10% owner at OFFICIAL PAYMENTS HOLDINGS, INC. · on record since Mar 11, 2009
10% owner at AtriCure, Inc. · on record since Dec 23, 2010
10% owner at ARTHROCARE CORP · on record since Jan 24, 2011

Insider trading activity of Discovery Group I, LLC

Transactions on record: 434; since Apr 12, 2005

Open-market buys: 331; $6.8M

Open-market sells: 103; $9.8M

Companies traded: 9; last filing Dec 19, 2012

Figures computed from official regulatory filings — .

Companies where Discovery Group I, LLC has traded

AtriCure, Inc.48 tx · $2.4M · Dec 19, 2012
OFFICIAL PAYMENTS HOLDINGS, INC.18 tx · $1.5M · Oct 3, 2012
CSI MINNESOTA, INC.18 tx · $888.2K · Jul 16, 2012
TESSCO TECHNOLOGIES INC188 tx · $5.1M · May 2, 2011
ARTHROCARE CORP2 tx · $35.7K · Jan 24, 2011
OPENTV CORP3 tx · $147.9K · Feb 12, 2009
17 tx · $921.6K · Jun 17, 2008
110 tx · $4.3M · Jan 9, 2008
30 tx · $1.3M · Dec 26, 2007

Track record of Discovery Group I, LLC

Statistical track record

Free account

Open-market buys: 331

Last buy: Jun 14, 2012

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of Discovery Group I, LLC

Co-insiders of Discovery Group I, LLC

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
AtriCure, Inc.Listing on record	Dec 19, 2012	Sell	-10,000	6.53 USD	$65.3K		SEC
AtriCure, Inc.Listing on record	Dec 10, 2012	Sell	17,300	6.13 USD	$106K		SEC
AtriCure, Inc.Listing on record	Dec 10, 2012	Sell	-6,035	6.10 USD	$36.8K		SEC
AtriCure, Inc.Listing on record	Dec 10, 2012	Sell	-8,558	6.21 USD	$53.1K		SEC
AtriCure, Inc.Listing on record	Dec 4, 2012	Sell	-1,000	6.81 USD	$6.8K		SEC
AtriCure, Inc.Listing on record	Dec 4, 2012	Sell	-29,700	6.50 USD	$193.1K		SEC
AtriCure, Inc.Listing on record	Dec 4, 2012	Sell	-1,500	6.71 USD	$10.1K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Oct 3, 2012	Sell	-299,800	3.90 USD	$1.2M	Unusual size	SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 29, 2012	Sell	-600	4.00 USD	$2.4K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 29, 2012	Sell	-100	4.10 USD	$410		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-500	4.07 USD	$2K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-5,777	4.01 USD	$23.2K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-1,200	4.00 USD	$4.8K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-838	4.01 USD	$3.4K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-9,030	10.25 USD	$92.6K	Unusual size	SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-6,440	10.34 USD	$66.6K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-175	10.29 USD	$1.8K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-7,787	10.45 USD	$81.4K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-660	10.34 USD	$6.8K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-970	10.25 USD	$9.9K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-826	10.26 USD	$8.5K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-846	10.45 USD	$8.8K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-408	10.30 USD	$4.2K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-3,298	10.30 USD	$34K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-1,632	10.29 USD	$16.8K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
AtriCure, Inc.Listing on record	Dec 19, 2012	Sell	-10,000	6.53 USD	$65.3K		SEC
AtriCure, Inc.Listing on record	Dec 10, 2012	Sell	17,300	6.13 USD	$106K		SEC
AtriCure, Inc.Listing on record	Dec 10, 2012	Sell	-6,035	6.10 USD	$36.8K		SEC
AtriCure, Inc.Listing on record	Dec 10, 2012	Sell	-8,558	6.21 USD	$53.1K		SEC
AtriCure, Inc.Listing on record	Dec 4, 2012	Sell	-1,000	6.81 USD	$6.8K		SEC
AtriCure, Inc.Listing on record	Dec 4, 2012	Sell	-29,700	6.50 USD	$193.1K		SEC
AtriCure, Inc.Listing on record	Dec 4, 2012	Sell	-1,500	6.71 USD	$10.1K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Oct 3, 2012	Sell	-299,800	3.90 USD	$1.2M	Unusual size	SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 29, 2012	Sell	-600	4.00 USD	$2.4K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 29, 2012	Sell	-100	4.10 USD	$410		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-500	4.07 USD	$2K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-5,777	4.01 USD	$23.2K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-1,200	4.00 USD	$4.8K		SEC
OFFICIAL PAYMENTS HOLDINGS, INC.Listing unverified	Aug 22, 2012	Sell	-838	4.01 USD	$3.4K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-9,030	10.25 USD	$92.6K	Unusual size	SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-6,440	10.34 USD	$66.6K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-175	10.29 USD	$1.8K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-7,787	10.45 USD	$81.4K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-660	10.34 USD	$6.8K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-970	10.25 USD	$9.9K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-826	10.26 USD	$8.5K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-846	10.45 USD	$8.8K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-408	10.30 USD	$4.2K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-3,298	10.30 USD	$34K		SEC
CSI MINNESOTA, INC.Listing unverified	Jul 16, 2012	Sell	-1,632	10.29 USD	$16.8K		SEC