Steven George Hughes

Companies

• Atrium Therapeutics, Inc.Chief Medical Officer Feb 26, 2026 to now¹
• Avidity Biosciences, Inc.Chief Medical Officer Jan 8, 2025 to now²
• Arcturus TherapeuticsChief Development Officer Feb 20, 2020 to Dec 22, 2020³
• VivoSim Labs, INC.Chief Medical Officer Aug 9, 2018 to Aug 19, 2019⁴

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. RNA51,638 shares⁵$398.6K at $7.72Sep 18, 2026
• ABAvidity Biosciences, Inc.0 shares⁶Feb 27, 2026

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

Recent filings

• Sep 18, 2026Shares withheld for tax 21,459 shares at $8.95 of Atrium Therapeutics, Inc.⁵
• Apr 20, 2026Granted 30,000 shares of Atrium Therapeutics, Inc.⁷
• Feb 27, 2026Returned to company 115,857 shares of Avidity Biosciences, Inc.⁶
• Jan 21, 2026Sold 2,878 shares at $72.45 of Avidity Biosciences, Inc.⁸
• Jan 21, 2026Sold 2,017 shares at $72.45 of Avidity Biosciences, Inc.⁸
• Jan 7, 2026Sold 2,373 shares at $72.23 of Avidity Biosciences, Inc.⁹
• Oct 22, 2025Sold 2,209 shares at $47.54 of Avidity Biosciences, Inc.¹⁰
• Oct 22, 2025Exercised options 2,209 shares at $10.16 of Avidity Biosciences, Inc.¹⁰
• Sep 22, 2025Sold 2,208 shares at $40.58 of Avidity Biosciences, Inc.¹¹
• Sep 22, 2025Exercised options 2,208 shares at $10.16 of Avidity Biosciences, Inc.¹¹
• Sep 15, 2025Sold 1,542 shares at $45.41 of Avidity Biosciences, Inc.¹²
• Sep 15, 2025Exercised options 1,542 shares at $6.57 of Avidity Biosciences, Inc.¹²
• Aug 22, 2025Sold 2,208 shares at $46.40 of Avidity Biosciences, Inc.¹³
• Aug 22, 2025Exercised options 2,208 shares at $10.16 of Avidity Biosciences, Inc.¹³
• Aug 13, 2025Sold 1,542 shares at $46.66 of Avidity Biosciences, Inc.¹⁴
• Aug 13, 2025Exercised options 1,542 shares at $6.57 of Avidity Biosciences, Inc.¹⁴
• Aug 6, 2025Sold 33,983 shares at $42.74 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Sold 17,667 shares at $42.74 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Exercised options 17,667 shares at $10.16 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Sold 6,167 shares at $42.74 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Exercised options 6,167 shares at $22.47 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Sold 12,334 shares at $42.74 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Exercised options 12,334 shares at $6.57 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Sold 11,283 shares at $42.74 of Avidity Biosciences, Inc.¹⁵
• Aug 6, 2025Exercised options 11,283 shares at $15.96 of Avidity Biosciences, Inc.¹⁵