William Young

Insider

First SEC filing: July 23, 2020 · Latest: July 23, 2020

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

BIIB selling Jan. 8, 2014

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 40 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

40 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Jan. 8, 2014	BIIB	S 10b5-1	15,000	$285.11	$4,276,650	18,509 Direct	-44.76%	Disposed	-22.8% (price as of 2026-08-20)
June 12, 2013	BIIB	A	2,610	—	—	33,509 Direct	+8.45%	Acquired	(price as of 2026-08-20)
June 8, 2012	BIIB	A	4,040	—	—	30,899 Direct	+15.04%	Acquired	(price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	5,975	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	5,700	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	5,950	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	3,125	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	12,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2011	BIIB	S 10b5-1	33,250	$96.14	$3,196,655	26,859 Direct	-55.32%	Disposed	128.8% (price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	5,975	$53.43	$319,244	60,109 Direct	+11.04%	Acquired	311.7% (price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	5,700	$59.17	$337,269	54,134 Direct	+11.77%	Acquired	271.8% (price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	5,950	$52.22	$310,709	48,434 Direct	+14.01%	Acquired	321.3% (price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	3,125	$46.99	$146,844	42,484 Direct	+7.94%	Acquired	368.2% (price as of 2026-08-20)
Sept. 27, 2011	BIIB	M 10b5-1	12,500	$47.55	$594,375	39,359 Direct	+46.54%	Acquired	362.6% (price as of 2026-08-20)
Sept. 1, 2011	BIIB	M 10b5-1	10,000	$34.34	$343,400	36,859 Direct	+37.23%	Acquired	540.6% (price as of 2026-08-20)
Sept. 1, 2011	BIIB	M 10b5-1	12,500	$36.94	$461,750	49,359 Direct	+33.91%	Acquired	495.5% (price as of 2026-08-20)
Sept. 1, 2011	BIIB	M 10b5-1	12,500	$66.29	$828,625	61,859 Direct	+25.32%	Acquired	231.9% (price as of 2026-08-20)
Sept. 1, 2011	BIIB	S 10b5-1	35,000	$95.00	$3,325,000	26,859 Direct	-56.58%	Disposed	131.6% (price as of 2026-08-20)
Sept. 1, 2011	BIIB	M 10b5-1	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 1, 2011	BIIB	M 10b5-1	12,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 1, 2011	BIIB	M 10b5-1	12,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 29, 2011	BIIB	M 10b5-1	10,000	$68.15	$681,500	36,859 Direct	+37.23%	Acquired	222.8% (price as of 2026-08-20)
Aug. 29, 2011	BIIB	S 10b5-1	10,000	$92.58	$925,800	26,859 Direct	-27.13%	Disposed	137.6% (price as of 2026-08-20)
Aug. 29, 2011	BIIB	M 10b5-1	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 1, 2011	BIIB	A	5,800	—	—	26,859 Direct	+27.54%	Acquired	(price as of 2026-08-20)
Dec. 31, 2010	BIIB	M	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 31, 2010	BIIB	F	13,256	$67.05	$888,815	21,059 Direct	-38.63%	Disposed	228.1% (price as of 2026-08-20)
Dec. 31, 2010	BIIB	M	15,000	$59.25	$888,750	34,315 Direct	+77.66%	Acquired	271.3% (price as of 2026-08-20)
June 9, 2010	BIIB	A	11,470	—	—	19,315 Direct	+146.21%	Acquired	(price as of 2026-08-20)
June 10, 2009	BIIB	A	5,975	—	—	5,975 Direct	—	Acquired	(price as of 2026-08-20)
June 10, 2009	BIIB	A	2,245	—	—	7,845 Direct	+40.09%	Acquired	(price as of 2026-08-20)
June 19, 2008	BIIB	A	5,700	—	—	5,700 Direct	—	Acquired	(price as of 2026-08-20)
June 19, 2008	BIIB	A	2,050	—	—	5,600 Direct	+57.75%	Acquired	(price as of 2026-08-20)
May 31, 2007	BIIB	A	5,950	—	—	5,950 Direct	—	Acquired	(price as of 2026-08-20)
May 31, 2007	BIIB	A	2,300	—	—	3,550 Direct	+184.00%	Acquired	(price as of 2026-08-20)
May 25, 2007	BIIB	M	1,250	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 25, 2007	BIIB	M	1,250	—	—	1,250 Direct	—	Acquired	(price as of 2026-08-20)
May 25, 2006	BIIB	A	1,250	—	—	1,250 Direct	—	Acquired	(price as of 2026-08-20)
May 25, 2006	BIIB	A	3,125	—	—	3,125 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 9, 2006	BIIB	A	12,500	—	—	12,500 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2005	BIIB	A	12,500	—	—	12,500 Direct	—	Acquired	(price as of 2026-08-20)
May 25, 2004	BIIB	M	52,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 25, 2004	BIIB	S	52,500	$62.52	$3,282,300	0 Direct	-100.00%	Disposed	251.9% (price as of 2026-08-20)
May 25, 2004	BIIB	M	52,500	$16.26	$853,650	52,500 Direct	—	Acquired	1253.0% (price as of 2026-08-20)
Jan. 2, 2004	BIIB	A	12,500	—	—	12,500 Direct	—	Acquired	(price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Sept. 27, 2011	BIIB	Stock Option (Right to Buy) [F2]	Common Stock (5,975)	$53.43	June 2, 2019	5,975	Disposed
Sept. 27, 2011	BIIB	Stock Option (Right to Buy)	Common Stock (5,700)	$59.17	June 18, 2018	5,700	Disposed
Sept. 27, 2011	BIIB	Stock Option (Right to Buy)	Common Stock (5,950)	$52.22	May 30, 2017	5,950	Disposed
Sept. 27, 2011	BIIB	Employee Stock Option (Right to Buy) [F2]	Common Stock (3,125)	$46.99	May 24, 2016	3,125	Disposed
Sept. 27, 2011	BIIB	Stock Option (Right to Buy) [F2]	Common Stock (12,500)	$47.55	Jan. 9, 2016	12,500	Disposed
Sept. 1, 2011	BIIB	Stock Option (Right to Buy)	Common Stock (10,000)	$34.34	Jan. 1, 2013	10,000	Disposed
Sept. 1, 2011	BIIB	Non-qualified Stock Option (Right to Buy) [F2]	Common Stock (12,500)	$36.94	Jan. 1, 2014	12,500	Disposed
Sept. 1, 2011	BIIB	Stock Option (Right to Buy) [F4]	Common Stock (12,500)	$66.29	Jan. 3, 2015	12,500	Disposed
Aug. 29, 2011	BIIB	Stock Option (Right to Buy)	Common Stock (10,000)	$68.15	Jan. 1, 2012	10,000	Disposed
Dec. 31, 2010	BIIB	Stock Option (Right to Buy)	Common Stock (15,000)	$59.25	Jan. 1, 2011	15,000	Disposed
June 10, 2009	BIIB	Stock Option (Right to Buy)	Common Stock (5,975)	—	June 2, 2019	5,975	Acquired
June 19, 2008	BIIB	Stock Option (rignt to buy)	Common Stock (5,700)	$59.17	June 18, 2018	5,700	Acquired
May 31, 2007	BIIB	Stock Option (right to buy)	Common Stock (5,950)	$52.22	May 30, 2017	5,950	Acquired
May 25, 2007	BIIB	Restricted Stock Unit	Common Stock (1,250)	—	May 25, 2007	1,250	Disposed
May 25, 2006	BIIB	Restricted Stock Units	Common Stock (1,250)	—	—	1,250	Acquired
May 25, 2006	BIIB	Employee Stock Option (right-to-buy) [F1]	Common Stock (3,125)	$46.99	May 24, 2016	3,125	Acquired
Jan. 9, 2006	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (12,500)	$47.55	Jan. 9, 2016	12,500	Acquired
Jan. 3, 2005	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (12,500)	$66.29	Jan. 3, 2015	12,500	Acquired
May 25, 2004	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (52,500)	$16.26	Sept. 23, 2009	52,500	Disposed
Jan. 2, 2004	BIIB	Non-Qualified Stock Option (right to buy) [F1]	Common Stock (12,500)	$36.94	Jan. 1, 2014	12,500	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 4 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
July 23, 2020	ANNX	Stock Option (Right to Buy)→ Common Stock	—	Direct
July 23, 2020	ANNX	Stock Option (Right to Buy)→ Common Stock	—	Direct
July 23, 2020	ANNX	Stock Option (Right to Buy)→ Common Stock	—	Direct
July 23, 2020	ANNX	Stock Option (Right to Buy)→ Common Stock	—	Direct