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WESTFIELD CAPITAL MANAGEMENT CO LP
- As of  06/06/24, 06:49:27 AM:   182 Insider Transactions.

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Buy/Sell* 1 Yr Return** Filed Date Subject Symbol Pct Owned Details
S 2020-01-07 11:41:54.0 MEDICINES CO HURN 0.0% view
B 2017-02-10 10:52:48.0 MERRIMACK PHARMACEUTICALS INC MACK 7.0% view
S 2017-02-10 10:51:58.0 ARIAD PHARMACEUTICALS INC ARIA 2.55% view
S 2017-02-10 10:50:27.0 SUPERIOR ENERGY SERVICES INC SPN 0.0% view
S 2017-02-10 10:48:15.0 AMAG PHARMACEUTICALS INC CRME 17.01% view
B 2016-02-10 17:01:29.0 RUSH ENTERPRISES INC RUSHB 5.38% view
B 2016-02-10 16:59:58.0 PTC THERAPEUTICS MACK 6.28% view
S 2016-02-09 20:05:19.0 AMAG PHARMACEUTICALS INC AMAG 5.26% view
S 2016-02-09 20:03:32.0 Cardiome Pharma Corp CRME 0.0% view
S 2016-02-05 17:06:13.0 DYNAVAX TECHNOLOGIES CORP DVAX 0.0% view
B 2015-11-09 12:05:00.0 Cardiome Pharma Corp CRME 18.67% view
B 2015-08-07 16:12:26.0 Cardiome Pharma Corp CRME 14.96% view
B 2015-06-09 17:17:40.0 Cardiome Pharma Corp CRME 15.13% view
B 2015-04-08 16:19:04.0 Cardiome Pharma Corp CRME 10.33% view
S 2015-02-09 19:59:17.0 Nuance Communications NUAN 0.0% view
B 2015-02-09 19:54:32.0 DYNAVAX TECHNOLOGIES CORP DVAX 6.45% view
B 2015-02-09 19:48:10.0 Cardiome Pharma Corp CRME 9.21% view
S 2015-02-09 19:37:49.0 Aegerion Pharmaceuticals AEGR 8.58% view
B 2014-10-07 21:29:50.0 Aegerion Pharmaceuticals AEGR 10.88% view
S 2014-03-10 17:03:05.0 ARTHROCARE CORP OFIX 0.0% view
S 2014-02-07 09:22:18.0 TITAN INTERNATIONAL INC TWI 0.0% view
S 2014-02-07 09:18:10.0 PALOMAR MEDICAL TECHNOLOGIES LLC PMTI 0.0% view
S 2014-02-07 09:16:05.0 Huron Consulting Group Inc HURN 0.0% view
S 2014-02-07 09:10:56.0 FXCM Inc FXCM 0.0% view
S 2014-02-07 09:05:14.0 ATMI INC ATMI 0.0% view
B 42.85% 2013-11-07 16:10:20.0 ARTHROCARE CORP ARTC 11.16% view
B 50.47% 2013-02-08 10:40:26.0 SKILLED HEALTHCARE GROUP INC n/a 1.0% view
B -20.04% 2013-02-08 10:17:22.0 TILLY TLYS 5.6% view
S 2013-02-08 10:04:51.0 TESORO CORP TSO 4.35% view
S 2013-02-08 09:54:38.0 ATMI INC ATMI 2.37% view
S 2013-02-08 09:31:47.0 METABOLIX MBLX 1.0% view
S 2013-02-08 09:30:48.0 TITAN INTERNATIONAL INC TWI 5.14% view
B 51.88% 2012-03-27 11:03:02.0 STEWART ENTERPRISES INC STEI 7.63% view
S 2012-03-27 10:45:53.0 METABOLIX MBLX 7.91% view
B -2.53% 2012-03-27 10:31:12.0 FXCM Inc ATMI 5.71% view
S 2012-03-27 09:50:56.0 ARTHROCARE CORP SUNH 1.0% view
S 2012-02-13 10:59:28.0 STEWART ENTERPRISES INC SNTS 0.0% view
S 2012-02-13 10:52:01.0 METABOLIX OFIX 3.5% view
S 2012-02-13 10:44:17.0 HIBBETT SPORTS INC HIBB 0.0% view
S 2012-02-13 10:36:24.0 DIONEX CORP DNEX 0.0% view
B 6.92% 2012-02-13 10:27:20.0 ATMI INC TWI 5.16% view
B 27.48% 2012-02-13 10:16:42.0 FXCM Inc FXCM 5.38% view
S 2012-02-13 10:06:01.0 METABOLIX MBLX 8.7% view
S 2011-07-08 15:45:57.0 METABOLIX MBLX 9.34% view
S 2011-06-10 09:42:06.0 SKILLED HEALTHCARE GROUP INC n/a 4.5% view
S 2011-03-09 12:47:58.0 SANTARUS INC ACIW 0.0% view
S 2011-02-11 09:59:55.0 EXTERRAN HOLDINGS INC EXH 4.3% view
S 2011-02-11 09:55:13.0 MEDICINES CO MDCO 0.0% view
B 39.35% 2011-02-11 09:49:32.0 NAVIGANT CONSULTING INC OFIX 5.02% view
B -14.01% 2011-02-11 09:45:15.0 STEWART ENTERPRISES INC STEI 6.76% view
S 2011-02-11 09:40:45.0 SUN HEALTHCARE GROUP INC SUNH 10.58% view
B 2010-10-08 09:25:07.0 SKILLED HEALTHCARE GROUP INC n/a 16.63% view
B 2010-02-11 07:34:23.0 WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP WAB 0.0% view
S 2010-02-11 07:30:18.0 STEWART ENTERPRISES INC STEI 4.15% view
S 2010-02-11 07:27:15.0 RBC Bearings INC ROLL 0.47% view
S 2010-02-11 07:24:07.0 NAVIGANT CONSULTING INC MDCO 2.11% view
S 2010-02-11 07:20:08.0 HIBBETT SPORTS INC GTIV n/a view
S 2010-02-11 07:15:47.0 EXTERRAN HOLDINGS INC EXH 6.26% view
S 2010-02-11 07:11:46.0 CORINTHIAN COLLEGES INC COCO 0.0% view
S 2010-02-11 07:09:36.0 ATMI INC ATMI 3.55% view
S 2010-02-11 07:05:35.0 ACTUANT CORP ATU 0.0% view
S 2009-10-09 07:04:59.0 SKILLED HEALTHCARE GROUP INC n/a 12.6% view
S 2009-08-04 13:01:50.0 ADOLOR CORP adlr 11.61% view
B -40.95% 2009-04-09 07:56:38.0 SANTARUS INC mdco 5.32% view
S 2009-02-04 09:44:58.0 ATMI INC ATMI 4.49% view
S 2009-02-04 09:42:50.0 GEHL CO GEHL 0.0% view
S 2009-02-04 09:39:27.0 RBC Bearings INC ROLL 6.63% view
S 2009-02-04 09:37:57.0 ALEXION PHARMACEUTICALS INC LAXN 4.84% view
S 2009-02-04 09:34:56.0 POWER INTEGRATIONS INC POWI 0.0% view
S 2009-02-04 09:27:55.0 VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES INC VSEA 0.0% view
B 2009-02-04 09:21:25.0 ELAN CORP PLC n/a 4.1% view
S 2009-02-04 09:18:39.0 NAVIGANT CONSULTING INC PMTI 4.61% view
S 2009-02-04 09:14:54.0 ACTUANT CORP ATU 6.24% view
S 2009-02-04 09:12:23.0 CORINTHIAN COLLEGES INC COCO 0.0% view
S 2009-02-04 09:08:53.0 SCHAWK INC SGK 0.0% view
S 2009-01-09 09:04:11.0 SANTARUS INC adlr 13.53% view
B 258.91% 2008-08-04 09:14:06.0 Vanda Pharmaceuticals Inc VNDA 10.715% view
B -46.48% 2008-01-10 09:19:29.0 DIONEX CORP DNEX 3.48% view
S 2008-01-10 09:19:25.0 ACI WORLDWIDE asvi 0.0% view
B 2008-01-10 09:17:48.0 MGI PHARMA INC n/a 0.0% view
S 2008-01-10 09:16:27.0 GREENBRIER COMPANIES INC GBX 0.0% view
B -21.34% 2008-01-10 09:15:17.0 MEDCO HEALTH SOLUTIONS INC MHS 0.0% view
B -30.68% 2008-01-10 09:12:48.0 ELAN CORP PLC n/a 5.79% view
B -12.94% 2008-01-10 09:10:04.0 ACTUANT CORP ATU 8.22% view
B -20.02% 2008-01-10 09:08:08.0 Fidelity National Information Services FIS 0.0% view
S 2008-01-10 09:06:09.0 Vanda Pharmaceuticals Inc VNDA 8.56% view
B -66.80% 2008-01-10 09:04:02.0 HEXCEL CORP hxl 0.24% view
S 2008-01-10 09:02:47.0 GENTIVA HEALTH SERVICES INC GTIV 5.05% view
B -37.32% 2008-01-10 08:58:49.0 STEWART ENTERPRISES INC STEI 5.27% view
B -21.95% 2008-01-10 08:56:23.0 CHANGS P F CHINA BISTRO INC n/a 0.0% view
B -33.59% 2008-01-10 08:52:23.0 RBC Bearings INC ROLL 2.68% view
B -32.33% 2008-01-10 08:51:44.0 ATMI INC ATMI 16.44% view
S 2008-01-07 06:08:41.0 ADOLOR CORP VNDA 9.43% view
B -16.84% 2007-12-06 08:58:26.0 ADOLOR CORP adlr 13.65% view
B -92.92% 2007-09-10 08:45:54.0 Vanda Pharmaceuticals Inc VNDA 10.01% view
B -63.62% 2007-05-09 07:57:22.0 PALOMAR MEDICAL TECHNOLOGIES INC PMTI 10.08% view
B -42.96% 2007-04-12 11:36:28.0 ADOLOR CORP adlr 11.35% view
S 2006-06-02 00:00:00.0 BIOSOURCE INTERNATIONAL INC BIOI 0.0% view
S 2006-02-14 00:00:00.0 Nuance Communications SSFT 4.07% view
B -0.11% 2006-02-14 00:00:00.0 GEHL CO GEHL 7.21% view
B -84.21% 2006-02-13 00:00:00.0 James River Coal CO JRCC 5.66% view
B 24.41% 2006-02-13 00:00:00.0 GENTIVA HEALTH SERVICES INC GTIV 9.67% view
B 6.65% 2006-02-13 00:00:00.0 ASV INC asvi 9.77% view
B -19.85% 2006-02-13 00:00:00.0 P F CHANGS CHINA BISTRO INC PFCB 6.02% view
B 15.09% 2006-02-13 00:00:00.0 LAUREATE EDUCATION slvn 2.84% view
S 2006-02-13 00:00:00.0 ALEXION PHARMACEUTICALS INC alxn 0.0% view
S 2006-02-10 00:00:00.0 VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES INC FLE 0.0% view
S 2006-02-10 00:00:00.0 WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP WNC 0.0% view
S 2006-02-10 00:00:00.0 SRA INTERNATIONAL INC XPRT 1.39% view
B -10.33% 2006-02-10 00:00:00.0 SKILLSOFT PUBLIC LIMITED CO ATU 7.01% view
S 2006-02-10 00:00:00.0 POLYMEDICA CORP PLMD 5.84% view
S 2006-02-10 00:00:00.0 KEANE INC KEA 0.0% view
S 2006-02-10 00:00:00.0 ADVANCED MAGNETICS INC AVM 5.62% view
S 2006-02-10 00:00:00.0 CONCUR TECHNOLOGIES INC HCR 4.4% view
S 2006-02-10 00:00:00.0 RSA SECURITY INC RSAS 0.0% view
S 2006-02-10 00:00:00.0 COST PLUS INC CPWM 0.0% view
S 2006-02-10 00:00:00.0 ADVANCED DIGITAL INFORMATION CORP WMGI 0.0% view
S 2006-02-10 00:00:00.0 RADIO ONE INC ROIA 0.0% view
B -13.74% 2005-04-04 00:00:00.0 EXAR CORP EXAR 6.77% view
B 15.48% 2005-02-14 00:00:00.0 FLEETWOOD ENTERPRISES INC FLE 6.58% view
S 2005-02-14 00:00:00.0 ARMOR HOLDINGS INC EVC 0.0% view
B -8.53% 2005-02-14 00:00:00.0 W SNTS 14.36% view
B 2005-02-14 00:00:00.0 BIOSOURCE INTERNATIONAL INC BIOI 5.82% view
B 70.30% 2005-02-14 00:00:00.0 WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP WAB 5.77% view
B -25.32% 2005-02-14 00:00:00.0 WABASH NATIONAL CORP WNC 6.25% view
S 2005-02-14 00:00:00.0 NDCHEALTH CORP NDC 0.0% view
B -9.41% 2005-02-14 00:00:00.0 LECG CORP XPRT 8.1% view
S 2005-02-14 00:00:00.0 QUINTON CARDIOLOGY SYSTEMS INC QUIN 11.26% view
S 2005-02-14 00:00:00.0 NAVIGANT CONSULTING INC NCI 7.03% view
B -19.39% 2005-02-14 00:00:00.0 KEANE INC KEA 7.38% view
S 2005-02-14 00:00:00.0 PHILADELPHIA CONSOLIDATED HOLDING CORP PHLY 0.0% view
B 2005-02-14 00:00:00.0 ADVANCED MAGNETICS INC AVM 6.31% view
S 2005-02-14 00:00:00.0 SOUTHWEST BANCORP OF TEXAS INC CNQR 10.55% view
B 15.30% 2005-02-14 00:00:00.0 INFORMATION HOLDINGS INC HCR 5.55% view
S 2005-02-14 00:00:00.0 ADVANCED MEDICAL OPTICS INC RSAS 0.174% view
B -18.29% 2005-02-14 00:00:00.0 POWER INTEGRATIONS INC DLP 5.86% view
B 2005-02-14 00:00:00.0 COST PLUS INC ADIC 7.31% view
S 2005-02-14 00:00:00.0 APOLLO GROUP INC APOL 0.0% view
S 2005-02-14 00:00:00.0 LAUREATE EDUCATION slvn 0.09% view
B 30.65% 2005-02-14 00:00:00.0 LEAPFROG ENTERPRISES INC TSAI 5.91% view
S 2005-02-14 00:00:00.0 WASTE CONNECTIONS INC GTRC 0.0% view
B -29.05% 2005-02-14 00:00:00.0 RADIO ONE INC ROIA 5.0% view
B -9.04% 2005-01-10 00:00:00.0 POLYMEDICA CORP PLMD 10.0% view
B 65.28% 2004-08-12 00:00:00.0 VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES INC VSEA 7.76% view
S 2004-08-12 00:00:00.0 ARMOR HOLDINGS INC AH 9.35% view
B 75.24% 2004-08-12 00:00:00.0 ALLIANCE IMAGING INC AIQ 5.38% view
B 2004-08-12 00:00:00.0 NDCHEALTH CORP NDC 8.04% view
B 66.80% 2004-08-12 00:00:00.0 WILSON GREATBATCH TECHNOLOGIES INC GB 5.48% view
B 3.74% 2004-08-12 00:00:00.0 NAVIGANT CONSULTING INC NCI 8.21% view
B -26.29% 2004-08-12 00:00:00.0 LEAPFROG ENTERPRISES INC LF 5.6% view
B 27.15% 2004-08-12 00:00:00.0 WASTE CONNECTIONS INC WCN 6.77% view
S 2004-08-05 00:00:00.0 CROSS COUNTRY HEALTHCARE INC CCRN n/a view
S 2004-07-27 00:00:00.0 CROSS COUNTRY HEALTHCARE INC CCRN 0.0% view
B 19.89% 2004-07-27 00:00:00.0 ENTRAVISION COMMUNICATIONS CORP EVC 5.9% view
B 41.71% 2004-07-27 00:00:00.0 W WHQ 10.06% view
B 85.70% 2004-07-27 00:00:00.0 SUPERIOR ENERGY SERVICES INC SPN 6.24% view
B 50.91% 2004-07-27 00:00:00.0 SRA INTERNATIONAL INC SRX 5.3% view
B 54.27% 2004-07-27 00:00:00.0 SEACOR HOLDINGS INC CKH 6.68% view
B -40.73% 2004-07-27 00:00:00.0 PSS WORLD MEDICAL INC NMSS 0.0% view
B 2004-07-27 00:00:00.0 QUINTON CARDIOLOGY SYSTEMS INC QUIN 13.99% view
B -16.30% 2004-07-27 00:00:00.0 KEANE INC KEA 6.58% view
B 45.01% 2004-07-27 00:00:00.0 PHILADELPHIA CONSOLIDATED HOLDING CORP PHLY 6.83% view
B 2004-07-27 00:00:00.0 SOUTHWEST BANCORP OF TEXAS INC SWBT 7.5% view
B 12.49% 2004-07-27 00:00:00.0 P F CHANGS CHINA BISTRO INC PFCB 4.6% view
B 2004-07-27 00:00:00.0 INFORMATION HOLDINGS INC IHI 6.2% view
B 2004-07-27 00:00:00.0 SELECT MEDICAL CORP SEM 5.86% view
B 18.45% 2004-07-27 00:00:00.0 RSA SECURITY INC RSAS 9.31% view
B -11.76% 2004-07-27 00:00:00.0 WRIGHT MEDICAL GROUP INC WMGI 7.6% view
B 2004-07-27 00:00:00.0 LAUREATE EDUCATION slvn 6.89% view
B 8.80% 2004-07-27 00:00:00.0 EAST WEST BANCORP INC EWBC 7.23% view
B -51.96% 2004-07-27 00:00:00.0 UCBH HOLDINGS INC UCBH 4.8% view
B 56.97% 2004-07-27 00:00:00.0 GUITAR CENTER INC GTRC 8.38% view
B 21.75% 2004-07-27 00:00:00.0 CROSS COUNTRY HEALTHCARE INC CCRN 0.0% view
B 21.75% 2004-07-26 00:00:00.0 CROSS COUNTRY HEALTHCARE INC CCRN n/a view
B 2004-07-21 00:00:00.0 ATLANTIC COAST AIRLINES HOLDINGS INC acai 5.06% view
B 2004-07-21 00:00:00.0 ADVANCED NEUROMODULATION SYSTEMS INC ANSI 0.0% view
B 93.24% 2004-07-21 00:00:00.0 CV THERAPEUTICS INC CVTX 5.41% view
B 11.82% 2004-06-14 00:00:00.0 POLYMEDICA CORP PLMD 10.24% view
B -4.44% 2004-06-10 00:00:00.0 CONCUR TECHNOLOGIES INC CNQR 10.69% view
B -24.86% 2004-06-10 00:00:00.0 COST PLUS INC CPWM 11.67% view
B -24.86% 2004-06-10 00:00:00.0 COST PLUS INC CPWM 9.47% view
B 2002-12-05 00:00:00.0 QUINTON CARDIOLOGY SYSTEMS INC QUIN 12.3% 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.
** Since most institutions are long investors, only returns for long transactions are shown here.