Stephen K. Brannan

Companies

• Serina Therapeutics, Inc.Board member Jun 17, 2025 to now¹
• Karuna TherapeuticsChief Medical Officer Jun 27, 2019 to Mar 18, 2024²

Holdings

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

Shares held

• STSerina Therapeutics, Inc. SER1,000 shares³$1.7K at $1.69Jul 7, 2026
• KTKaruna Therapeutics KRTX0 shares⁴Mar 18, 2024

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

Recent filings

• Jul 7, 2026Bought 1,000 shares at $2.03 of Serina Therapeutics, Inc.³
• Mar 18, 2024Returned to company 6,487 shares at $330.00 of Karuna Therapeutics⁴
• Mar 18, 2024Returned to company 36,117 shares at $330.00 of Karuna Therapeutics⁴
• Mar 8, 2024Sold 100 shares at $318.96 of Karuna Therapeutics⁵
• Mar 8, 2024Sold 4,900 shares at $318.33 of Karuna Therapeutics⁵
• Mar 8, 2024Exercised options 1,791 shares at $111.97 of Karuna Therapeutics⁵
• Mar 8, 2024Exercised options 3,209 shares at $131.64 of Karuna Therapeutics⁵
• Mar 8, 2024Exercised options 2,500 shares at $5.45 of Karuna Therapeutics⁵
• Feb 9, 2024Shares withheld for tax 1,046 shares at $317.14 of Karuna Therapeutics⁶
• Feb 8, 2024Sold 818 shares at $316.56 of Karuna Therapeutics⁶
• Feb 8, 2024Sold 4,182 shares at $316.05 of Karuna Therapeutics⁶
• Feb 8, 2024Exercised options 5,000 shares at $111.97 of Karuna Therapeutics⁶
• Feb 8, 2024Exercised options 2,500 shares at $5.45 of Karuna Therapeutics⁶
• Jan 8, 2024Sold 15,000 shares at $316.81 of Karuna Therapeutics⁷
• Jan 8, 2024Exercised options 9,696 shares at $111.97 of Karuna Therapeutics⁷
• Jan 8, 2024Exercised options 5,304 shares at $131.64 of Karuna Therapeutics⁷
• Jan 8, 2024Exercised options 2,500 shares at $5.45 of Karuna Therapeutics⁷
• Dec 8, 2023Sold 99 shares at $204.18 of Karuna Therapeutics⁸
• Dec 8, 2023Sold 2,251 shares at $203.80 of Karuna Therapeutics⁸
• Dec 8, 2023Sold 3,969 shares at $202.74 of Karuna Therapeutics⁸
• Dec 8, 2023Sold 2,116 shares at $201.73 of Karuna Therapeutics⁸
• Dec 8, 2023Sold 1,565 shares at $200.11 of Karuna Therapeutics⁸
• Dec 8, 2023Exercised options 10,000 shares at $131.64 of Karuna Therapeutics⁸
• Dec 8, 2023Exercised options 2,500 shares at $5.45 of Karuna Therapeutics⁸
• Nov 8, 2023Sold 2,245 shares at $180.08 of Karuna Therapeutics⁹