Elena Ridloff

Companies

• IMMUNIC, INC.Board member Aug 10, 2026 to now¹
• Sionna Therapeutics, Inc.Chief financial officer Feb 6, 2025 to now²
• Kymera TherapeuticsBoard member Mar 16, 2021 to now³
• Kronos Bio, Inc.Board member Oct 8, 2020 to now⁴
• Acadia PharmaceuticalsChief financial officer Apr 2, 2019 to Apr 30, 2021⁵

Holdings

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

Shares held

• STSionna Therapeutics, Inc. SION133,069 shares⁶$546.2K at $4.11Sep 17, 2026
• KBKronos Bio, Inc.0 shares⁷Jun 20, 2025
• KTKymera Therapeutics KYMR0 shares⁸May 11, 2026

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

Recent filings

• Sep 17, 2026Granted 47,268 shares of Sionna Therapeutics, Inc.⁶
• Sep 17, 2026Granted 47,269 shares of Sionna Therapeutics, Inc.⁶
• May 11, 2026Sold 3,000 shares at $87.00 of Kymera Therapeutics⁸
• May 11, 2026Exercised options 3,000 shares at $31.20 of Kymera Therapeutics⁸
• Apr 1, 2026Sold 1,200 shares at $86.05 of Kymera Therapeutics⁹
• Apr 1, 2026Sold 3,400 shares at $85.19 of Kymera Therapeutics⁹
• Apr 1, 2026Exercised options 4,600 shares at $14.18 of Kymera Therapeutics⁹
• Mar 31, 2026Sold 7,400 shares at $85.37 of Kymera Therapeutics⁹
• Mar 31, 2026Exercised options 7,400 shares at $14.18 of Kymera Therapeutics⁹
• Sep 2, 2025Sold 8,836 shares at $25.08 of Sionna Therapeutics, Inc.¹⁰
• Aug 29, 2025Sold 748 shares at $25.18 of Sionna Therapeutics, Inc.¹⁰
• Aug 28, 2025Sold 16,098 shares at $25.97 of Sionna Therapeutics, Inc.¹¹
• Aug 27, 2025Sold 3,618 shares at $25.10 of Sionna Therapeutics, Inc.¹¹
• Aug 26, 2025Sold 3,700 shares at $25.13 of Sionna Therapeutics, Inc.¹¹
• Aug 20, 2025Sold 17,500 shares at $22.69 of Sionna Therapeutics, Inc.¹²
• Aug 19, 2025Sold 34,500 shares at $21.08 of Sionna Therapeutics, Inc.¹²
• Jun 20, 2025U 25,296 shares at $0.57 of Kronos Bio, Inc.⁷
• Jun 11, 2025Sold 4,500 shares at $50.00 of Kymera Therapeutics¹³
• Jun 11, 2025Exercised options 4,500 shares at $20.29 of Kymera Therapeutics¹³
• Jun 3, 2025Sold 4,800 shares at $47.00 of Kymera Therapeutics¹⁴
• Jun 3, 2025Sold 7,200 shares at $45.50 of Kymera Therapeutics¹⁴
• Jun 3, 2025Exercised options 12,000 shares at $27.67 of Kymera Therapeutics¹⁴
• Jun 25, 2024Granted 11,333 shares of Kronos Bio, Inc.¹⁵
• Jun 22, 2023Granted 11,333 shares of Kronos Bio, Inc.¹⁶