SOUTHWELL DAVID P

Director at BIOSPHERE MEDICAL INC · on record since May 12, 2006
Director at HUMAN GENOME SCIENCES INC · on record since Jul 24, 2008
Director at First Eagle Alternative Capital BDC, Inc. · on record since May 17, 2010
Chief Financial Officer at HUMAN GENOME SCIENCES INC · on record since Aug 1, 2012
Director at PTC THERAPEUTICS, INC. · on record since Jun 19, 2013
Director at ROCKET PHARMACEUTICALS, INC. · on record since Jun 26, 2015
Chief Financial Officer at Sunovion Pharmaceuticals Inc. · on record since Nov 9, 2004
President and CEO at ROCKET PHARMACEUTICALS, INC. · on record since Jan 24, 2017
Director at Spero Therapeutics, Inc. · on record since Mar 30, 2018
Director at TScan Therapeutics, Inc. · on record since Jul 15, 2021
Chief Executive Officer at TScan Therapeutics, Inc. · on record since Jul 15, 2021

Insider trading activity of SOUTHWELL DAVID P

Transactions on record: 447; since Apr 16, 2004

Open-market buys: 26; $842.2K

Open-market sells: 287; $29.4M

Companies traded: 8; last filing Aug 5, 2026

Figures computed from official regulatory filings — .

Companies where SOUTHWELL DAVID P has traded

ROCKET PHARMACEUTICALS, INC.32 tx · $5.1M · Aug 5, 2026
PTC THERAPEUTICS, INC.52 tx · $7.7M · Jan 6, 2026
TScan Therapeutics, Inc.8 tx · $281.7K · Feb 6, 2023
Spero Therapeutics, Inc.2 tx · Jun 6, 2018
HUMAN GENOME SCIENCES INC14 tx · $3M · Aug 1, 2012
21 tx · $498.8K · Dec 7, 2010
16 tx · $89.6K · Sep 10, 2010
302 tx · $60.4M · Sep 12, 2007

Track record of SOUTHWELL DAVID P

Statistical track record

Free

Open-market buys: 26

Last buy: May 18, 2022

Win rates and median returns are available with a free account (5 insiders/month).

Transaction history of SOUTHWELL DAVID P

Co-insiders of SOUTHWELL DAVID P

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
ROCKET PHARMACEUTICALS, INC.Listing on record	Aug 5, 2026	Other	150,000	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jul 6, 2026	Award	22,862	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jul 6, 2026	AwardD (derivative)	64,860	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 6, 2026	Award	4,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 6, 2026	AwardD (derivative)	3,475	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Sep 11, 2025	ExerciseD (derivative)	-12,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Sep 11, 2025	Exercise	12,000	30.86 USD	$370.3K	SEC
PTC THERAPEUTICS, INC.Listing on record	Sep 11, 2025	Sell	-12,000	58.34 USD	$700.1K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jul 18, 2025	Award	30,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 7, 2025	AwardD (derivative)	8,800	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 7, 2025	Award	4,000	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jun 20, 2024	AwardD (derivative)	23,944	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	May 20, 2024	Gift	-113,124	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	May 20, 2024	Gift	-59,716	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	May 10, 2024	Gift	-1,650	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Sell	-59,716	24.22 USD	$1.4M	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Sell	-10,284	25.16 USD	$258.7K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Exercise	29,624	4.34 USD	$128.6K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	ExerciseD (derivative)	-29,624	4.34 USD	$128.6K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	ExerciseD (derivative)	-70,000	4.34 USD	$303.8K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Exercise	70,000	4.34 USD	$303.8K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Sell	-10,000	24.05 USD	$240.5K	SEC
PTC THERAPEUTICS, INC.Listing on record	Feb 16, 2024	AwardD (derivative)	10,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Feb 16, 2024	Award	4,000	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jun 26, 2023	AwardD (derivative)	25,850	0.00 USD	—	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
ROCKET PHARMACEUTICALS, INC.Listing on record	Aug 5, 2026	Other	150,000	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jul 6, 2026	Award	22,862	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jul 6, 2026	AwardD (derivative)	64,860	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 6, 2026	Award	4,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 6, 2026	AwardD (derivative)	3,475	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Sep 11, 2025	ExerciseD (derivative)	-12,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Sep 11, 2025	Exercise	12,000	30.86 USD	$370.3K	SEC
PTC THERAPEUTICS, INC.Listing on record	Sep 11, 2025	Sell	-12,000	58.34 USD	$700.1K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jul 18, 2025	Award	30,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 7, 2025	AwardD (derivative)	8,800	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Jan 7, 2025	Award	4,000	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jun 20, 2024	AwardD (derivative)	23,944	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	May 20, 2024	Gift	-113,124	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	May 20, 2024	Gift	-59,716	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	May 10, 2024	Gift	-1,650	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Sell	-59,716	24.22 USD	$1.4M	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Sell	-10,284	25.16 USD	$258.7K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Exercise	29,624	4.34 USD	$128.6K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	ExerciseD (derivative)	-29,624	4.34 USD	$128.6K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	ExerciseD (derivative)	-70,000	4.34 USD	$303.8K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Exercise	70,000	4.34 USD	$303.8K	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Apr 16, 2024	Sell	-10,000	24.05 USD	$240.5K	SEC
PTC THERAPEUTICS, INC.Listing on record	Feb 16, 2024	AwardD (derivative)	10,000	0.00 USD	—	SEC
PTC THERAPEUTICS, INC.Listing on record	Feb 16, 2024	Award	4,000	0.00 USD	—	SEC
ROCKET PHARMACEUTICALS, INC.Listing on record	Jun 26, 2023	AwardD (derivative)	25,850	0.00 USD	—	SEC