Kathleen P. Gallagher

Companies

• Atrium Therapeutics, Inc.Board member Feb 26, 2026 to now¹
• Atrium Therapeutics, Inc.Officer Feb 26, 2026 to now¹
• Avidity Biosciences, Inc.Chief Program Officer Jan 8, 2025 to now²

Holdings

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

Shares held

• ATAtrium Therapeutics, Inc. RNA119,729 shares³$924.3K at $7.72Sep 18, 2026
• ABAvidity Biosciences, Inc.0 shares⁴Feb 27, 2026

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

Recent filings

• Sep 18, 2026Shares withheld for tax 11,632 shares at $8.95 of Atrium Therapeutics, Inc.³
• Apr 20, 2026Granted 102,500 shares of Atrium Therapeutics, Inc.⁵
• Feb 27, 2026Returned to company 80,303 shares of Avidity Biosciences, Inc.⁴
• Dec 17, 2025Shares withheld for tax 8,030 shares at $71.87 of Avidity Biosciences, Inc.⁶
• Dec 17, 2025Shares withheld for tax 33,336 shares at $71.87 of Avidity Biosciences, Inc.⁶
• Dec 17, 2025Granted 72,000 shares of Avidity Biosciences, Inc.⁶
• Sep 2, 2025Sold 188 shares at $47.42 of Avidity Biosciences, Inc.⁷
• Jun 17, 2025Sold 911 shares at $30.24 of Avidity Biosciences, Inc.⁸
• Jun 2, 2025Sold 5,875 shares at $32.48 of Avidity Biosciences, Inc.⁹
• Jun 2, 2025Exercised options 5,875 shares at $16.65 of Avidity Biosciences, Inc.⁹
• May 1, 2025Sold 5,875 shares at $32.40 of Avidity Biosciences, Inc.¹⁰
• May 1, 2025Exercised options 5,875 shares at $16.65 of Avidity Biosciences, Inc.¹⁰
• Apr 1, 2025Sold 329 shares at $27.83 of Avidity Biosciences, Inc.¹¹
• Apr 1, 2025Exercised options 329 shares at $16.65 of Avidity Biosciences, Inc.¹¹
• Apr 1, 2025Sold 5,546 shares at $27.83 of Avidity Biosciences, Inc.¹¹
• Apr 1, 2025Exercised options 5,546 shares at $14.70 of Avidity Biosciences, Inc.¹¹
• Mar 3, 2025Sold 5,875 shares at $29.41 of Avidity Biosciences, Inc.¹²
• Mar 3, 2025Exercised options 5,875 shares at $14.70 of Avidity Biosciences, Inc.¹²
• Feb 3, 2025Sold 5,875 shares at $32.16 of Avidity Biosciences, Inc.¹³
• Feb 3, 2025Exercised options 5,875 shares at $16.65 of Avidity Biosciences, Inc.¹³
• Jan 22, 2025Sold 5,629 shares at $30.16 of Avidity Biosciences, Inc.¹⁴
• Jan 21, 2025Sold 1,817 shares at $28.59 of Avidity Biosciences, Inc.¹⁴
• Jan 21, 2025Sold 670 shares at $28.60 of Avidity Biosciences, Inc.¹⁴
• Jan 21, 2025Sold 1,295 shares at $28.59 of Avidity Biosciences, Inc.¹⁴
• Jan 6, 2025Granted 25,000 shares of Avidity Biosciences, Inc.¹⁵