Holger Weis

Companies

• ZIOPHARM OncologyChief executive officer Jul 7, 2025 to now¹
• JUPITER NEUROSCIENCES, INC.Board member Nov 8, 2024 to now²
• ZIOPHARM OncologyBoard member Mar 22, 2021 to now³

Holdings

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

Shares held

• JNJUPITER NEUROSCIENCES, INC. JUNS96,581 shares⁴$303.3K at $3.14Jun 2, 2025
• ZOZIOPHARM Oncology TCRT25,683 shares⁵$56.0K at $2.18Aug 6, 2026

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

Recent filings

• Aug 6, 2026Granted 4,363 shares at $2.01 of ZIOPHARM Oncology⁵
• Jul 23, 2026Granted 4,568 shares at $1.92 of ZIOPHARM Oncology⁶
• Jun 30, 2026Granted 3,880 shares at $2.26 of ZIOPHARM Oncology⁷
• Jun 12, 2026Granted 7,761 shares at $2.26 of ZIOPHARM Oncology⁸
• May 22, 2026Granted 3,700 shares at $2.37 of ZIOPHARM Oncology⁹
• Jun 2, 2025Exercised options 85,800 shares of JUPITER NEUROSCIENCES, INC.⁴
• Jan 22, 2025Exercised options 10,781 shares of JUPITER NEUROSCIENCES, INC.¹⁰
• Jun 22, 2022Granted 40,000 shares of ZIOPHARM Oncology¹¹