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David Southwell

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Insider profile

Currently holds positions in BioSphere Medical Inc, TScan Therapeutics Inc, Rocket Pharmaceuticals Inc, PTC Therapeutics Inc and Rocket Pharmaceuticals Inc

Performance

Overall performance
2.9
Performance over holding periods
2.9
30 days 90 days 120 days
Average return -0% 8.2% 15.1%
Success rate 71% 68% 82%
Transactions
6 33% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance

Positions

Position Company Period
Chairman of the Board BioSphere Medical Inc March 1, 2005 -
Chief Executive Officer, Director TScan Therapeutics Inc None -
Director Rocket Pharmaceuticals Inc Jan. 1, 2018 -
Independent Director PTC Therapeutics Inc Dec. 1, 2005 -
President, Chief Executive Officer, Director Rocket Pharmaceuticals Inc Aug. 13, 2014 -
Independent Director Spero Therapeutics Inc Feb. 1, 2018 - April 25, 2019
President, Chief Executive Officer, Director Rocket Pharmaceuticals Inc Aug. 13, 2014 - Jan. 1, 2018
Independent Director THL Credit Inc Jan. 1, 2009 - June 6, 2016
Chief Financial Officer, Executive Vice President Human Genome Sciences Inc March 22, 2010 - July 30, 2012
David Southwell's trades of PTC Therapeutics Inc's stock


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2025-09-11 2025-09-09
S Sale
9,940 +34.3%
156.79
US$4,402,392 		9,940 +34.3% 156.79 US$4,402,392
2025-09-09 2025-09-09
PrS Proposed sale
37,511
189.24
US$4,550,257 		37,511 189.24 US$4,550,257
2024-04-16 2024-04-15
S Sale
60,157 +4.1%
386.11
US$2,629,695 		60,157 +4.1% 386.11 US$2,629,695
2024-04-15 2024-04-15
PrS Proposed sale
10,000
24.05
US$240,522 		10,000 24.05 US$240,522
2024-04-16 2024-04-12
S Sale
10,284 -9.8%
25.16
US$258,704 		10,284 -9.8% 25.16 US$258,704
2024-04-16 2024-04-12
S Sale
59,716 -36.2%
24.22
US$1,446,560 		59,716 -36.2% 24.22 US$1,446,560
2024-04-12 2024-04-12
PrS Proposed sale
70,000
24.36
US$1,705,261 		70,000 24.36 US$1,705,261
2023-05-15 2023-05-15
PrS Proposed sale
85,911
4.03
US$346,221 		85,911 4.03 US$346,221
2023-04-19 2023-04-17
PlS Planned sale
5,188 -33.1%
51.43
US$266,840 		5,188 -33.1% 51.43 US$266,840
2023-04-19 2023-04-17
PlS Planned sale
6,241 -28.5%
50.69
US$316,348 		6,241 -28.5% 50.69 US$316,348
2023-04-17 2023-04-17
PrS Proposed sale
11,429
51.03
US$583,188 		11,429 51.03 US$583,188
2023-04-04 2023-03-31
PlS Planned sale
2,571 -19.7%
50.05
US$128,672 		2,571 -19.7% 50.05 US$128,672
2023-03-29 2023-03-27
PlS Planned sale
100 -0.9%
46.03
US$4,603 		100 -0.9% 46.03 US$4,603
2023-03-29 2023-03-27
PlS Planned sale
5,301 -33.3%
45.41
US$240,735 		5,301 -33.3% 45.41 US$240,735
2023-03-29 2023-03-27
PlS Planned sale
4,599 -22.4%
44.71
US$205,618 		4,599 -22.4% 44.71 US$205,618
2023-03-27 2023-03-27
PrS Proposed sale
10,000
44.33
US$443,300 		10,000 44.33 US$443,300
2022-05-20 2022-05-18
B Purchase
10,000 +6.2%
3.55
US$35,482 		10,000 +6.2% 3.55 US$35,482
2022-05-20 2022-05-18
B Purchase
15,000 +10.2%
3.62
US$54,339 		15,000 +10.2% 3.62 US$54,339
2020-10-20 2020-10-16
PlS Planned sale
500 -23.3%
52.18
US$26,089 		500 -23.3% 52.18 US$26,089
2020-10-20 2020-10-16
PlS Planned sale
11,500 -84.2%
51.52
US$592,434 		11,500 -84.2% 51.52 US$592,434
2020-10-20 2020-10-16
PlS Planned sale
700 -29.8%
52.18
US$36,528 		700 -29.8% 52.18 US$36,528
2020-10-20 2020-10-16
PlS Planned sale
14,300 -85.9%
51.50
US$736,493 		14,300 -85.9% 51.50 US$736,493
2004-05-13 2004-05-12
S Sale
1,200 -0.2%
46.99
US$56,388 		1,200 -0.2% 46.99 US$56,388
2004-05-13 2004-05-12
S Sale
1,562 -0.3%
46.98
US$73,383 		1,562 -0.3% 46.98 US$73,383
2004-05-13 2004-05-12
S Sale
2,338 -0.4%
46.97
US$109,816 		2,338 -0.4% 46.97 US$109,816
2004-05-13 2004-05-12
S Sale
100 -0.0%
46.96
US$4,696 		100 -0.0% 46.96 US$4,696
2004-05-13 2004-05-12
S Sale
800 -0.1%
46.94
US$37,552 		800 -0.1% 46.94 US$37,552
2004-05-13 2004-05-12
S Sale
4,100 -0.7%
46.93
US$192,413 		4,100 -0.7% 46.93 US$192,413
2004-05-13 2004-05-12
S Sale
5,600 -0.9%
46.92
US$262,752 		5,600 -0.9% 46.92 US$262,752
2004-05-13 2004-05-12
S Sale
1,000 -0.2%
46.91
US$46,910 		1,000 -0.2% 46.91 US$46,910
2004-05-13 2004-05-12
S Sale
300 -0.1%
46.89
US$14,067 		300 -0.1% 46.89 US$14,067
2004-05-13 2004-05-12
S Sale
3,455 -0.6%
46.88
US$161,970 		3,455 -0.6% 46.88 US$161,970
2004-05-13 2004-05-12
S Sale
1,145 -0.2%
46.87
US$53,666 		1,145 -0.2% 46.87 US$53,666
2004-05-13 2004-05-12
S Sale
692 -0.1%
46.86
US$32,427 		692 -0.1% 46.86 US$32,427
2004-05-13 2004-05-12
S Sale
4,008 -0.7%
46.85
US$187,775 		4,008 -0.7% 46.85 US$187,775
2004-05-13 2004-05-12
S Sale
2,800 -0.5%
46.84
US$131,152 		2,800 -0.5% 46.84 US$131,152
2004-05-13 2004-05-12
S Sale
300 -0.0%
46.82
US$14,046 		300 -0.0% 46.82 US$14,046
2004-05-13 2004-05-12
S Sale
500 -0.1%
46.81
US$23,405 		500 -0.1% 46.81 US$23,405
2004-05-13 2004-05-12
S Sale
1,600 -0.3%
46.80
US$74,880 		1,600 -0.3% 46.80 US$74,880
2004-05-13 2004-05-12
S Sale
100 -0.0%
46.79
US$4,679 		100 -0.0% 46.79 US$4,679
2004-05-13 2004-05-12
S Sale
400 -0.1%
46.77
US$18,708 		400 -0.1% 46.77 US$18,708
2004-05-13 2004-05-12
S Sale
3,000 -0.5%
46.76
US$140,280 		3,000 -0.5% 46.76 US$140,280
2004-05-13 2004-05-12
S Sale
745 -0.1%
46.74
US$34,821 		745 -0.1% 46.74 US$34,821
2004-05-13 2004-05-12
S Sale
745 -0.1%
46.72
US$34,806 		745 -0.1% 46.72 US$34,806
2004-05-13 2004-05-12
S Sale
5,000 -0.8%
46.70
US$233,500 		5,000 -0.8% 46.70 US$233,500