Avidity Biosciences, Inc. (RNA) Insider Ownership

Historic Insider Ownership Trends

Through the 90-day period concluding January 10, 2026, Avidity Biosciences's top three insider stakeholders include TenPercentOwner Investments, Lp Rtw (4.79Mn shares), President And Ceo Sarah Boyce (283.39K shares), Chief Human Resources Officer Teresa Mccarthy (116.87K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Investments, Lp Rtw 4,795,000 06 Aug, 2021
Sarah Boyce President And Ceo 283,394 09 Jan, 2026
Teresa Mccarthy Chief Human Resources Officer 116,867 09 Jan, 2026
W. Michael Flanagan Chief Scientific Officer 91,627 09 Jan, 2026
Kathleen P. Gallagher Chief Program Officer 80,838 19 Dec, 2025
Eric Mosbrooker Chief Commercial Officer 79,010 19 Dec, 2025
John B Moriarty Chief Legal Officer 74,557 09 Jan, 2026
Troy Edward Wilson 72,201 09 Sep, 2025
Michael F Maclean Chief Financial Officer 63,832 09 Jan, 2026
Charles Iii Calderaro Chief Technical Officer 49,797 09 Jan, 2026
Arthur A Levin 40,820 22 Dec, 2025
Steven George Hughes Chief Medical Officer 36,494 09 Jan, 2026
Jean Jinsun Kim 6,692 12 Jun, 2025
Noreen Henig 6,692 12 Jun, 2025
Tamar Thompson 6,692 12 Jun, 2025
Simona Skerjanec 6,692 12 Jun, 2025
Edward M. Md Kaye 6,692 12 Jun, 2025
Carsten Boess 6,692 12 Jun, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
07 Jan, 2026 Michael F Maclean Common Stock D 1,974 $72.23 63,832 D S
07 Jan, 2026 John B Moriarty Common Stock D 2,374 $72.23 74,557 D S
07 Jan, 2026 Sarah Boyce Common Stock D 8,576 $72.23 283,394 D S
07 Jan, 2026 Steven George Hughes Common Stock D 2,373 $72.23 36,494 D S
07 Jan, 2026 W. Michael Flanagan Common Stock D 2,373 $72.23 91,627 D S
07 Jan, 2026 Teresa Mccarthy Common Stock D 1,965 $72.23 116,867 D S
07 Jan, 2026 Charles Iii Calderaro Common Stock D 3,727 $72.23 49,797 D S
19 Dec, 2025 Arthur A Levin Common Stock D 1,330 $0.00 18,320 D G
19 Dec, 2025 Arthur A Levin - - 18,320 D
18 Dec, 2025 Sarah Boyce Common Stock D 29,159 $0.00 291,970 D G
17 Dec, 2025 John B Moriarty Common Stock D 26,824 $71.87 76,931 D F
17 Dec, 2025 John B Moriarty Common Stock A 56,000 $0.00 103,755 D A
17 Dec, 2025 Sarah Boyce Common Stock A 31,000 $0.00 336,871 D A
17 Dec, 2025 Sarah Boyce Common Stock D 15,742 $71.87 321,129 D F
17 Dec, 2025 Eric Mosbrooker Common Stock A 72,000 $0.00 127,000 D A
17 Dec, 2025 Eric Mosbrooker Common Stock D 36,564 $71.87 90,436 D F
17 Dec, 2025 Eric Mosbrooker Common Stock D 11,426 $71.87 79,010 D F
17 Dec, 2025 Eric Mosbrooker - - 79,010 D
17 Dec, 2025 W. Michael Flanagan Common Stock A 27,500 $0.00 107,695 D A
17 Dec, 2025 W. Michael Flanagan Common Stock D 13,695 $71.87 94,000 D F