W. Michael Flanagan

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
21 Jan 25	RNA Avidity Biosciences	Common Stock	Sell	Dispose S	No	Yes	28.592	1,812	51.81 k	91,975
21 Jan 25	RNA Avidity Biosciences	Common Stock	Sell	Dispose S	No	Yes	28.5967	3,860	110.38 k	93,787
6 Jan 25	RNA Avidity Biosciences	Common Stock	Grant	Acquire A	No	No	0	25,000	0.00	97,647
6 Jan 25	RNA Avidity Biosciences	Stock Option Common Stock	Grant	Acquire A	No	No	31.42	50,000	1.57 mm	50,000
18 Dec 24	RNA Avidity Biosciences	Common Stock	Sell	Dispose S	No	Yes	32.66	12,742	416.15 k	72,647
11 Dec 24	RNA Avidity Biosciences	Common Stock	Sell	Dispose S	No	Yes	35.7667	24,000	858.40 k	85,389
11 Dec 24	RNA Avidity Biosciences	Common Stock	Option exercise	Acquire M	No	Yes	22.47	24,000	539.28 k	109,389
11 Dec 24	RNA Avidity Biosciences	Stock Option Common Stock	Option exercise	Dispose M	No	Yes	22.47	24,000	539.28 k	86,000
1 Oct 24	RNA Avidity Biosciences	Common Stock	Sell	Dispose S	No	Yes	47.6178	62,500	2.98 mm	85,389
1 Oct 24	RNA Avidity Biosciences	Common Stock	Option exercise	Acquire M	No	Yes	26.75	62,500	1.67 mm	147,889

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.