David P. Southwell

Companies

• Rocket Pharmaceuticals Inc.Board member Jun 26, 2015 to now¹
• PTC TherapeuticsBoard member Jun 19, 2013 to now²
• TScan Therapeutics, Inc.Board member Jul 15, 2021 to Feb 6, 2023³
• TScan Therapeutics, Inc.Chief executive officer Jul 15, 2021 to Feb 6, 2023³
• Spero Therapeutics, Inc.Board member Feb 6, 2018 to Jun 6, 2018⁴
• Rocket Pharmaceuticals Inc.Chief executive officer Jan 9, 2017 to Jan 24, 2017⁵
• Rocket Pharmaceuticals Inc.President Jan 9, 2017 to Jan 24, 2017⁵
• Rocket Pharmaceuticals Inc.Officer Feb 17, 2015 to Mar 24, 2016⁶
• First Eagle Alternative Capital BDC, Inc.Board member May 17, 2010 to Dec 7, 2010⁷

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• PTC Therapeutics PTCT22,500 shares⁸$1.4M at $61.38Jan 2, 2026
• RPRocket Pharmaceuticals Inc. RCKT317,646 shares⁹$716.3K at $2.25Aug 5, 2026
• TTTScan Therapeutics, Inc. TCRX171,569 shares¹⁰$36.9K at $0.22May 18, 2022

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 3, 2026Other 150,000 shares of Rocket Pharmaceuticals Inc.⁹
• Jun 18, 2026Granted 22,862 shares of Rocket Pharmaceuticals Inc.¹¹
• Jan 2, 2026Granted 4,000 shares of PTC Therapeutics⁸
• Sep 9, 2025Sold 12,000 shares at $58.34 of PTC Therapeutics¹²
• Sep 9, 2025Exercised options 12,000 shares at $30.86 of PTC Therapeutics¹²
• Jun 18, 2025Granted 30,000 shares of Rocket Pharmaceuticals Inc.¹³
• Jan 3, 2025Granted 4,000 shares of PTC Therapeutics¹⁴
• May 8, 2024Gift 1,650 shares of PTC Therapeutics¹⁵
• May 2, 2024Gift 59,716 shares of Rocket Pharmaceuticals Inc.¹⁶
• May 2, 2024Gift 113,124 shares of Rocket Pharmaceuticals Inc.¹⁶
• Apr 15, 2024Sold 10,000 shares at $24.05 of Rocket Pharmaceuticals Inc.¹⁷
• Apr 15, 2024Exercised options 29,624 shares at $4.34 of Rocket Pharmaceuticals Inc.¹⁷
• Apr 12, 2024Sold 10,284 shares at $25.16 of Rocket Pharmaceuticals Inc.¹⁷
• Apr 12, 2024Sold 59,716 shares at $24.22 of Rocket Pharmaceuticals Inc.¹⁷
• Apr 12, 2024Exercised options 70,000 shares at $4.34 of Rocket Pharmaceuticals Inc.¹⁷
• Feb 15, 2024Granted 4,000 shares of PTC Therapeutics¹⁸
• Apr 17, 2023Sold 5,188 shares at $51.43 of PTC Therapeutics¹⁹
• Apr 17, 2023Sold 6,241 shares at $50.69 of PTC Therapeutics¹⁹
• Apr 17, 2023Exercised options 11,429 shares at $18.01 of PTC Therapeutics¹⁹
• Mar 31, 2023Sold 2,571 shares at $50.05 of PTC Therapeutics²⁰
• Mar 31, 2023Exercised options 2,571 shares at $18.01 of PTC Therapeutics²⁰
• Mar 27, 2023Sold 100 shares at $46.03 of PTC Therapeutics²¹
• Mar 27, 2023Sold 5,301 shares at $45.41 of PTC Therapeutics²¹
• Mar 27, 2023Sold 4,599 shares at $44.71 of PTC Therapeutics²¹
• Mar 27, 2023Exercised options 10,000 shares at $27.05 of PTC Therapeutics²¹