Biogen Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

SNSE:BIIBCL Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
02 Apr 24	SellCL$19,350,572	Priya Singhal	Individual	93	CL$208,070.67
22 Feb 24	SellCL$56,743,314	Priya Singhal	Individual	262	CL$216,577.53
15 Feb 24	BuyCL$97,805,918	Eric Rowinsky	Individual	455	CL$214,958.06

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of BIIBCL?
Owner Type	Number of Shares	Ownership Percentage
State or Government	140,368	0.0963%
Individual Insiders	349,221	0.24%
General Public	13,761,735	9.44%
Institutions	131,468,016	90.2%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 65.08% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
11.4%	The Vanguard Group, Inc.	16,678,507	CL$2.6t	0.47%	0.04%
11.2%	PRIMECAP Management Company	16,315,079	CL$2.6t	-0.14%	1.81%
10.5%	BlackRock, Inc.	15,347,041	CL$2.4t	5.56%	0.04%
5.04%	State Street Global Advisors, Inc.	7,344,960	CL$1.1t	3.51%	0.04%
4.23%	T. Rowe Price Group, Inc.	6,168,832	CL$964.2b	-19.8%	0.08%
3.52%	Wellington Management Group LLP	5,131,193	CL$802.0b	-0.68%	0.12%
2.48%	Geode Capital Management, LLC	3,613,020	CL$564.7b	1.32%	0.04%
2.42%	JP Morgan Asset Management	3,524,314	CL$550.9b	6.09%	0.06%
1.43%	Norges Bank Investment Management	2,078,745	CL$324.9b	0%	0.03%
1.2%	Beutel Goodman & Company Ltd.	1,744,154	CL$272.6b	-0.19%	1.2%
1.14%	UBS Asset Management AG	1,656,544	CL$258.9b	4.43%	0.03%
1.04%	Legal & General Investment Management Limited	1,511,506	CL$236.3b	-2.41%	0.04%
0.97%	Invesco Capital Management LLC	1,413,892	CL$221.0b	29.8%	0.08%
0.93%	Northern Trust Global Investments	1,353,135	CL$211.5b	-5.1%	0.03%
0.91%	Morgan Stanley, Investment Banking and Brokerage Investments	1,323,321	CL$206.8b	33.3%	0.02%
0.81%	RA Capital Management, L.P.	1,184,456	CL$185.1b	20.6%	2.24%
0.79%	Columbia Management Investment Advisers, LLC	1,150,486	CL$179.8b	-20.7%	0.04%
0.76%	Dimensional Fund Advisors LP	1,114,340	CL$174.2b	0.38%	0.03%
0.67%	BNY Asset Management	982,172	CL$153.5b	-19.5%	0.03%
0.65%	Renaissance Technologies LLC	952,706	CL$148.9b	54.1%	0.21%
0.63%	Charles Schwab Investment Management, Inc.	913,029	CL$142.7b	1.37%	0.02%
0.62%	JPMorgan Chase & Co, Private Banking and Investment Banking Investments	903,148	CL$141.2b	4.71%	0.03%
0.62%	Amundi Asset Management SAS	902,664	CL$141.1b	31.4%	0.03%
0.56%	OrbiMed Advisors LLC	813,000	CL$127.1b	-9.76%	1.75%
0.49%	Massachusetts Financial Services Company	711,184	CL$111.2b	29.6%	0.02%