Priya Singhal

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
10 Feb 25	BIIB Biogen	Common Stock	Payment of exercise	Dispose F	No	No	142.54	357	50.89 k	9,066.476
10 Feb 25	BIIB Biogen	Common Stock	Option exercise	Acquire M	No	No	0	1,212	0.00	9,423.476
10 Feb 25	BIIB Biogen	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,212	0.00	0
7 Feb 25	BIIB Biogen	Common Stock	Payment of exercise	Dispose F	No	No	141.35	681	96.26 k	8,211.476
7 Feb 25	BIIB Biogen	Common Stock	Option exercise	Acquire M	No	No	0	2,216	0.00	8,892.476
7 Feb 25	BIIB Biogen	RSU Common Stock	Option exercise	Dispose M	No	No	0	2,216	0.00	4,434
6 Feb 25	BIIB Biogen	RSU Common Stock	Grant	Acquire A	No	No	0	14,050	0.00	14,050
31 Jan 25	BIIB Biogen	Common Stock	Payment of exercise	Dispose F	No	No	143.93	578	83.19 k	6,676.476
31 Jan 25	BIIB Biogen	Common Stock	Option exercise	Acquire M	No	No	0	1,828	0.00	7,254.476
31 Jan 25	BIIB Biogen	RSU Common Stock	Option exercise	Dispose M	No	No	0	1,828	0.00	1,829

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