Insider at

04

Insider transactions

05
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
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Jan. 8, 2014 BIIB S 10b5-1 15,000 $285.11 $4,276,650 18,509 Direct -44.76% Disposed -22.3% (price as of 2026-10-05)
Sept. 27, 2011 BIIB S 10b5-1 33,250 $96.14 $3,196,655 26,859 Direct -55.32% Disposed 130.3% (price as of 2026-10-05)
Sept. 1, 2011 BIIB S 10b5-1 35,000 $95.00 $3,325,000 26,859 Direct -56.58% Disposed 133.1% (price as of 2026-10-05)
Aug. 29, 2011 BIIB S 10b5-1 10,000 $92.58 $925,800 26,859 Direct -27.13% Disposed 139.2% (price as of 2026-10-05)
May 25, 2004 BIIB S 52,500 $62.52 $3,282,300 0 Direct -100.00% Disposed 254.2% (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/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

07

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

DateTickerSecuritySharesOwnership
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