Barris Peter J (CIK 0001005561)

Latest company ownership

Shares held
30,936,643
Last filed at
Dec 8, 2017
Confidence Score
50.0
2025Q4
Confidence Score History
2016Q1 2025Q4
Shares held
12,000,000
Last filed at
Sep 10, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2017Q1 2025Q4
Shares held
11,890,138
Last filed at
Mar 6, 2019
Confidence Score
50.0
2025Q4
Confidence Score History
2017Q3 2025Q4
ARDX - ARDELYX, INC.
Role: 10% Owner
Shares held
5,629,734
Last filed at
Dec 16, 2014
Confidence Score
50.0
2025Q4
Confidence Score History
2014Q4 2025Q4
Shares held
4,659,333
Last filed at
Aug 29, 2014
Confidence Score
50.0
2025Q4
Confidence Score History
2010Q2 2025Q4
SYBX - SYNLOGIC, INC.
Role: 10% Owner
Shares held
4,228,940
Last filed at
Jan 26, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2015Q4 2025Q4
Shares held
4,093,377
Last filed at
May 11, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2014Q1 2025Q4
Shares held
3,736,243
Last filed at
Jul 24, 2019
Confidence Score
50.0
2025Q4
Confidence Score History
2019Q3 2025Q4
Shares held
2,927,708
Last filed at
Oct 10, 2017
Confidence Score
50.0
2025Q4
Confidence Score History
2017Q4 2025Q4
APPN - APPIAN CORP
Role: 10% Owner
Shares held
2,724,202
Last filed at
Feb 15, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2017Q4 2025Q4
Shares held
1,938,562
Last filed at
May 13, 2019
Confidence Score
50.0
2025Q4
Confidence Score History
2019Q2 2025Q4
BE - Bloom Energy Corp
Role: 10% Owner
Shares held
996,870
Last filed at
Jul 31, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2018Q3 2025Q4
Shares held
267,935
Last filed at
Nov 12, 2019
Confidence Score
50.0
2025Q4
Confidence Score History
2019Q4 2025Q4
Shares held
212,650
Last filed at
Nov 12, 2015
Confidence Score
50.0
2025Q4
Confidence Score History
2015Q2 2025Q4
GRPN - Groupon, Inc.
Role: Director
Shares held
71,581
Last filed at
Jun 10, 2016
Confidence Score
50.0
2025Q4
Confidence Score History
2016Q2 2025Q4
Shares held
0
Last filed at
Feb 27, 2018
Confidence Score
50.0
2025Q4
Confidence Score History
2018Q1 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Dec 26, 2019 Dec 26, 2019 Groupon, Inc. Director Sell 17.5 -210,124 -19.83% ✓ $491K
Nov 12, 2019 Nov 12, 2019 Galera Therapeutics, Inc. 10% Owner Buy 100.0 +416,666 10.57% ✗ $5M
Jul 22, 2019 Jul 24, 2019 Mirum Pharmaceuticals, Inc. 10% Owner Buy 100.0 +450,000 12.04% ✗ $6.8M
May 9, 2019 May 13, 2019 Trevi Therapeutics, Inc. 10% Owner Buy 100.0 +2,500,000 128.96% ✗ $25M
Mar 5, 2019 Mar 6, 2019 Mersana Therapeutics, Inc. 10% Owner Buy 100.0 +3,750,000 46.07% ✗ $15M
Sep 7, 2018 Sep 10, 2018 Adaptimmune Therapeutics PLC 10% Owner Buy 100.0 +15,000,000 18.76% ✗ $25M
Jul 27, 2018 Jul 31, 2018 Bloom Energy Corp 10% Owner Buy 100.0 +1,333,333 100.00% ✗ $20M
May 10, 2018 May 11, 2018 CRESCENT BIOPHARMA, INC. 10% Owner Sell 47.5 -9,539 -0.07% ✗ $169.9K
Mar 26, 2018 Mar 28, 2018 Adaptimmune Therapeutics PLC 10% Owner Buy 97.5 +6,571,164 8.95% ✗ $12.6M
Mar 21, 2018 Mar 23, 2018 Adaptimmune Therapeutics PLC 10% Owner Buy 87.5 +1,268,508 1.76% ✗ $2.4M
Feb 26, 2018 Feb 27, 2018 Oruka Therapeutics, Inc. 10% Owner Sell 20.0 -1,460,209 -100.00% ✗ $731.3K
Dec 6, 2017 Dec 8, 2017 Senseonics Holdings, Inc. 10% Owner Sell 37.5 -139,645 -0.45% ✗ $366.8K
Nov 27, 2017 Nov 27, 2017 APPIAN CORP 10% Owner Sell 15.0 -569,620 -100.00% ✗ $11.1M
Nov 20, 2017 Nov 21, 2017 APPIAN CORP 10% Owner Sell 15.0 -2,820,516 -100.00% ✗ $55M
Oct 10, 2017 Oct 10, 2017 RHYTHM PHARMACEUTICALS, INC. 10% Owner Buy 100.0 +550,000 12.61% ✗ $9.4M
Aug 8, 2017 Aug 10, 2017 Groupon, Inc. Director Sell 17.5 -9,824,097 -91.03% ✗ $2.2M
Jul 3, 2017 Jul 6, 2017 Mersana Therapeutics, Inc. 10% Owner Buy 100.0 +1,000,000 14.01% ✗ $15M
Jun 9, 2017 Jun 13, 2017 Groupon, Inc. Director Sell 20.0 -4,912,051 -31.38% ✗ $854.1K
Jun 1, 2017 Jun 5, 2017 Senseonics Holdings, Inc. 10% Owner Buy 100.0 +7,092,198 26.93% ✗ $10M
Mar 27, 2017 Mar 28, 2017 Adaptimmune Therapeutics PLC 10% Owner Buy 100.0 +12,870,000 21.71% ✗ $9M
Mar 1, 2017 Mar 2, 2017 Groupon, Inc. Director Sell 20.0 -187,386 -1.18% ✗ $787.4K
Feb 27, 2017 Mar 1, 2017 Groupon, Inc. Director Sell 20.0 -4,724,666 -22.98% ✗ $399.9K
Aug 12, 2016 Aug 15, 2016 Groupon, Inc. Director Sell 17.5 -730,349 -3.43% ✗ $4.2M
Jul 18, 2016 Jul 20, 2016 ARDELYX, INC. 10% Owner Buy 100.0 +2,290,951 19.43% ✗ $20M
Jun 8, 2016 Jun 10, 2016 Groupon, Inc. Director Sell 17.5 -10,781,944 -24.45% ✗ $2.1M
Mar 23, 2016 Mar 23, 2016 Senseonics Holdings, Inc. 10% Owner Buy 100.0 +2,631,578 11.10% ✗ $7.5M
Jan 13, 2016 Jan 14, 2016 ARDELYX, INC. 10% Owner Buy 100.0 +1,500,000 14.57% ✗ $15M
Nov 16, 2015 Nov 18, 2015 CRESCENT BIOPHARMA, INC. 10% Owner Sell 52.5 -452 -0.01% ✗ $3.1K
Oct 5, 2015 Oct 6, 2015 SYNLOGIC, INC. 10% Owner Buy 100.0 +1,146,308 21.08% ✗ $6M
Jun 17, 2015 Jun 19, 2015 SUPERNUS PHARMACEUTICALS, INC. 10% Owner Buy 45.0 - 0.00% ✗ $270K
Jun 15, 2015 Jun 17, 2015 SUPERNUS PHARMACEUTICALS, INC. 10% Owner Sell 20.0 -2,813,314 -26.44% ✗ $928.7K
Jun 5, 2015 Jun 9, 2015 ARDELYX, INC. 10% Owner Buy 100.0 +4,672,897 83.14% ✗ $50M
Dec 23, 2014 Dec 29, 2014 ARDELYX, INC. 10% Owner Sell 51.3 -9,420 -0.17% ✗ $42K
Aug 27, 2014 Aug 29, 2014 Viracta Therapeutics, Inc. 10% Owner Sell 17.5 -266,700 -5.41% ✗ $2.1M
Aug 8, 2014 Aug 12, 2014 Viracta Therapeutics, Inc. 10% Owner Sell 17.5 -710,540 -12.61% ✗ $4.7M
Jan 15, 2014 Jan 15, 2014 CRESCENT BIOPHARMA, INC. 10% Owner Buy 100.0 +1,000,000 13.20% ✗ $8M
Dec 5, 2013 Dec 5, 2013 GYRE THERAPEUTICS, INC. 10% Owner Sell 52.5 -1,000 -0.02% ✗ $5.1K
Nov 21, 2013 Nov 22, 2013 GYRE THERAPEUTICS, INC. 10% Owner Sell 51.3 -5,333 -0.12% ✗ $27.5K
Jun 30, 2010 Jul 2, 2010 Viracta Therapeutics, Inc. 10% Owner Buy 100.0 +23,824,451 100.00% ✗ $6.6M