Biogen Inc.

Ownership Transactions Reported by 28 Insiders

	Insiders	Shares	%	Avg Price	Total $
Buys	1	+455	18.1%	$222.54	+$101K
Sells	1	-2.06K	81.9%	$230.07	-$473K
Net	0	-1.6K	-63.8%		-$372K

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Report Date
Alexander J. Denner	Director	$163M			Jun 15, 2022
Michel Vounatsos	Chief Executive Officer, Director	$23.9M			Feb 18, 2022
Susan Alexander	EVP Chief Legal Officer	$11.3M			Feb 16, 2024
Stelios Papadopoulos	Director	$9.5M			Jun 15, 2022
Christopher Viehbacher	President and CEO, Director	$6.65M			Feb 7, 2024
Caroline Dorsa	Director	$5.75M			Jun 21, 2024
Eric K. Rowinsky	Director	$4.75M	+$101K	+2.18%	Jun 21, 2024
Stephen Sherwin	Director	$4.34M			Jun 21, 2024
Michael R. Mcdonnell	EVP, Chief Financial Officer	$4.25M			Feb 16, 2024
Chirfi Guindo	Head of Glob Prod Strat & Com	$4.14M			Feb 18, 2022
Richard Mulligan	Director	$3.74M			Jun 15, 2022
Nancy Leaming	Director	$3.41M			Jul 1, 2021
Ginger Gregory	EVP, Human Resources	$2.98M			Feb 16, 2024
Alfred Sandrock	Head of Research & Development	$2.52M			Jun 7, 2021
Rachid Izzar	Head of Global Product Strat.	$2.13M			Feb 16, 2024
Nicole Murphy	Head of Pharm Ops and Tech	$2.07M			Apr 1, 2024
Brian Posner	Director	$1.99M			Dec 31, 2022
Jesus B. Mantas	Director	$1.6M			Jun 21, 2024
Alphonse Galdes	EVP Pharmaceutical Oper & Tech	$1.5M			Jan 19, 2022
William A. Hawkins	Director	$1.4M			Jun 21, 2024
Robin Kramer	Chief Accounting Officer	$1.36M			Feb 16, 2024
Priya Singhal	Head of Development	$1.09M	-$473K	-30.4%	Aug 30, 2024
Jane Grogan	Head of Research	$998K			Feb 7, 2024
Maria C. Freire	Director	$961K			Jun 21, 2024
Susan Langer	Director	$596K			Jun 21, 2024
Adam Keeney	Head of Corporate Development	$543K			May 1, 2024
William D. /. Jones	Director	$532K			Jun 15, 2022
Monish D. Patolawala	Director	$290K			Jun 21, 2024

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.