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MASON CAPITAL MANAGEMENT LLC
- As of  06/03/24, 10:37:54 PM:   91 Insider Transactions.

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Buy/Sell* 1 Yr Return** Filed Date Subject Symbol Pct Owned Details
S 2020-03-12 08:01:13.0 Clear Channel Outdoor Holdings CCOH 5.1% view
B 2017-06-23 16:35:15.0 CF Corp n/a 5.32% view
S 2015-02-17 16:16:26.0 Madison Square Garden Co MSG 6.933% view
S 2015-02-17 16:16:09.0 Clear Channel Outdoor Holdings CCOH 9.23% view
S 2015-02-17 16:15:46.0 Babcock & Wilcox Co BWC 12.0% view
S 2015-02-17 16:15:24.0 MENS WEARHOUSE INC MW 0.0% view
B 2014-10-02 14:25:26.0 Madison Square Garden Co MSG 8.143% view
B -6.69% 2014-02-28 11:47:17.0 MENS WEARHOUSE INC MW 6.4% view
B 2014-01-16 17:28:01.0 PMV Pharmaceuticals PMVP 6.1% view
B 2020-09-28 17:04:58.0 Athira Pharma ATHA 6.9% view
B 2020-08-31 16:51:49.0 Nuance Communications NUAN 5.1% view
B 2020-08-10 08:55:50.0 GoHealth n/a 5.4% view
B 2020-04-14 18:17:51.0 Change Healthcare Inc CHNG 6.3% view
S 2020-02-11 13:27:39.0 Moderna MRNA 1.0% view
S 2020-02-11 13:14:09.0 Chewy CHWY 5.4% view
S 2020-02-11 12:57:33.0 BERRY GLOBAL GROUP BERY n/a view
B 2020-02-11 12:41:42.0 Chewy CHWY 6.8% view
B 2019-07-15 09:22:44.0 Axovant Gene Therapies Ltd BBIO 22.1% view
S 2019-06-14 17:12:23.0 Axovant Sciences Ltd AXON 58.15% view
S 2019-02-19 14:03:36.0 BERRY GLOBAL GROUP INC DCPH 0.0% view
S 2019-01-10 20:09:41.0 UNITED STATES STEEL CORP n/a 0.0% view
S 2019-01-10 20:07:43.0 BERRY GLOBAL GROUP INC BERY 4.2% view
S 2019-01-10 17:18:39.0 Myovant Sciences Ltd MYOV 56.0% view
B 2019-01-10 17:17:40.0 Moderna n/a 5.2% view
S 2019-01-10 17:08:10.0 ENCANA CORP ECA 0.9% view
S 2019-01-10 17:01:57.0 Arbutus Biopharma Corp ABUS 28.9% view
B 2019-01-03 17:21:33.0 Urovant Sciences Ltd UROV 65.2% view
S 2018-12-21 16:26:54.0 Moderna AXON 65.2% view
B 2018-10-22 16:29:10.0 Urovant Sciences Ltd UROV 75.6% view
B 2018-07-02 16:37:45.0 Eidos Therapeutics MIDD 5.4% view
B 2018-06-07 08:19:35.0 Axovant Sciences Ltd X 5.5% view
B 2018-02-14 15:54:30.0 Parsley Energy PE 7.3% view
B 2018-02-14 15:50:15.0 Deciphera Pharmaceuticals ABEO 8.6% view
S 2018-02-14 15:41:49.0 aTYR PHARMA INC ATYR 0.0% view
S 2018-02-14 15:33:03.0 Calithera Biosciences CALA 4.6% view
S 2018-02-14 15:24:00.0 CABOT OIL & GAS CORP COG 0.0% view
B 2018-02-14 15:14:55.0 Arbutus Biopharma Corp ABUS 29.1% view
B 2017-11-30 15:42:56.0 Parsley Energy PE 7.2% view
B 2017-10-17 08:56:10.0 Deciphera Pharmaceuticals DCPH 8.1% view
B 2017-10-02 17:04:13.0 ABEONA THERAPEUTICS INC LIFE 9.5% view
S 2017-07-10 17:09:11.0 Rice Energy Inc ECA 7.5% view
B 2017-07-10 16:58:45.0 Calithera Biosciences AXON 69.8% view
B 2017-06-14 17:29:52.0 Arbutus Biopharma Corp GPOR 5.8% view
B 2017-02-21 16:51:43.0 Calithera Biosciences CPN 0.0% view
S 2017-02-14 15:37:57.0 Rice Energy Inc RICE 5.5% view
S 2017-02-14 15:18:42.0 Kite Pharma n/a 0.0% view
S 2017-02-14 14:52:08.0 PIONEER NATURAL RESOURCES CO LNG 0.0% view
B 2017-02-14 14:42:19.0 ENCANA CORP n/a 9.1% view
S 2017-02-14 14:32:51.0 RANGE RESOURCES CORP RRC 1.3% view
S 2017-02-14 14:16:42.0 CABOT OIL & GAS CORP COG 5.8% view
B 2017-02-10 17:27:34.0 Myovant Sciences Ltd n/a 61.8% view
B 2016-05-13 16:13:13.0 DYNEGY INC RICE 6.5% view
S 2016-02-16 16:54:44.0 PIONEER NATURAL RESOURCES CO ILMN#456 0.0% view
B 2016-02-16 15:52:50.0 MOHAWK INDUSTRIES INC n/a 6.5% view
B 2016-01-29 16:46:18.0 RANGE RESOURCES CORP RRC 6.8% view
B 2016-01-21 16:31:21.0 CABOT OIL & GAS CORP COG 7.5% view
B 2015-11-09 15:47:50.0 PIONEER NATURAL RESOURCES CO PXD 6.0% view
B 2015-10-13 16:01:24.0 Kite Pharma KITE 6.1% view
B 2015-08-31 15:27:37.0 Qunar Cayman Islands Ltd n/a 6.5% view
B 2015-07-17 16:43:22.0 CTRIP COM INTERNATIONAL LTD WLL 5.0% view
S 2015-06-29 14:53:57.0 AVIS BUDGET GROUP CAR 4.2% view
B 2015-04-20 11:57:24.0 Envision Healthcare Holdings SEE 5.7% view
S 2015-02-17 15:30:49.0 TRIUMPH GROUP INC HRB 0.0% view
S 2015-02-17 15:18:44.0 SALIX PHARMACEUTICALS LTD NFX 0.6% view
S 2015-02-17 15:06:29.0 ACADIA PHARMACEUTICALS INC CAR 4.7% view
B 2015-02-05 15:53:47.0 KANSAS CITY SOUTHERN KSU 6.5% view
B 2015-01-06 17:08:55.0 Wayfair Inc W 5.8% view
B 2015-01-06 16:49:18.0 MOHAWK INDUSTRIES INC CAR 5.0% view
B 2014-10-24 15:22:05.0 PIONEER NATURAL RESOURCES CO W 12.6% view
B 2014-08-14 14:15:42.0 SALIX PHARMACEUTICALS LTD SLXP 5.7% view
B 80.90% 2014-05-15 15:52:45.0 MOHAWK INDUSTRIES INC ACAD 5.0% view
S 2014-03-10 15:40:41.0 ILLUMINA INC ILMN#456 5.5% view
S 2014-02-14 11:14:24.0 INTUITIVE SURGICAL INC ISRG n/a view
S 2014-02-14 10:55:13.0 CARTERS INC KORS 4.1% view
S 2014-02-14 10:39:33.0 TRIUMPH GROUP INC HRB 6.4% view
B 2013-08-30 15:50:21.0 TRIUMPH GROUP INC n/a 5.3% view
B 2013-05-20 15:39:48.0 INTUITIVE SURGICAL INC n/a 5.3% view
S 2013-02-14 16:38:24.0 Oncothyreon Inc ONTY 5.9% view
S 2013-02-14 16:22:38.0 TripAdvisor TRIP n/a view
B 23.61% 2013-02-14 16:09:52.0 CARTERS INC HRB 8.5% view
B -42.57% 2013-02-14 15:55:01.0 MEDIVATION MDVN 5.3% view
S 2012-03-30 14:49:06.0 Invesco Ltd IVZ 5.8% view
S 2012-02-14 13:11:57.0 VanceInfo Technologies Inc n/a 0.0% view
B -76.08% 2012-02-14 12:55:13.0 Oncothyreon Inc ONTY 7.3% view
B 53.24% 2012-02-14 12:16:42.0 ESTEE LAUDER COMPANIES INC HRB 8.1% view
B 2012-02-14 11:50:10.0 HEALTH MANAGEMENT ASSOCIATES INC n/a 6.0% view
B -14.11% 2012-01-27 13:43:53.0 Oncothyreon Inc ONTY 7.1% view
B 2011-08-12 15:45:40.0 VanceInfo Technologies Inc n/a 5.9% view
B -6.41% 2011-05-13 13:05:55.0 Seagate Technology plc UHS 7.7% view
B -39.56% 2011-02-11 15:25:11.0 GUESS INC EL 5.2% view
S 2011-02-11 15:21:51.0 REGAL ENTERTAINMENT GROUP RGC 5.1% 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.