LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM

Reporting ownerCIK 0001841990

W. Michael Flanagan

14 transactions in 2 companies, from December 17, 2025 to September 18, 2026.

By company

Where this insider traded.

Company	Ticker	Trades	Bought	Sold
Atrium Therapeutics, Inc.	RNA	7	—	$645K
Avidity Biosciences, Inc.	RNAM	7	—	—

14 in total, newest filings first.

Company	Ticker	Insider	Date	Code	Shares	Price	Value
Atrium Therapeutics, Inc.	RNA	W. Michael FlanaganDir	Sep 18	F	22,812	$8.95	$204K
Atrium Therapeutics, Inc.	RNA	W. Michael FlanaganDirDERIV	Feb 27	A	20,000	$0.00	—?
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChiefDERIV	Feb 27	D	50,000	—	—
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChiefDERIV	Feb 27	D	88,000	—	—
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChiefDERIV	Feb 27	D	72,000	—	—
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChiefDERIV	Feb 27	D	96,000	—	—
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChiefDERIV	Feb 27	D	66,500	—	—
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChiefDERIV	Feb 27	D	25,000	—	—
Avidity Biosciences, Inc.	RNAM	W. Michael FlanaganChief	Feb 27	D	150,365	—	—
Avidity Biosciences, Inc.	RNA	W. Michael FlanaganChief	Jan 21	SPLAN	2,558	$72.45	$185K
Avidity Biosciences, Inc.	RNA	W. Michael FlanaganChief	Jan 21	SPLAN	3,976	$72.45	$288K
Avidity Biosciences, Inc.	RNA	W. Michael FlanaganChief	Jan 7	SPLAN	2,373	$72.23	$171K
Avidity Biosciences, Inc.	RNA	W. Michael FlanaganChief	Dec 17	F	13,695	$71.87	$984K
Avidity Biosciences, Inc.	RNA	W. Michael FlanaganChief	Dec 17	A	27,500	$0.00	—