Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 38 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

38 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
June 8, 2010 BIIB S 10b5-1 1,000 $47.64 $47,640 9,900 Direct -9.17% Disposed 361.5% (price as of 2026-10-02)
June 8, 2010 BIIB S 10b5-1 1,000 $47.60 $47,600 10,900 Direct -8.40% Disposed 361.9% (price as of 2026-10-02)
June 24, 2009 BIIB S 10b5-1 850 $48.53 $41,250 11,900 Direct -6.67% Disposed 353.1% (price as of 2026-10-02)
June 24, 2009 BIIB S 10b5-1 850 $48.53 $41,250 12,750 Direct -6.25% Disposed 353.1% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 20 $62.12 $1,242 5,010 Direct -0.40% Disposed 254.0% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 20 $62.11 $1,242 5,030 Direct -0.40% Disposed 254.0% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 400 $62.03 $24,812 5,050 Direct -7.34% Disposed 254.5% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 200 $62.00 $12,400 5,450 Direct -3.54% Disposed 254.6% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 200 $61.67 $12,334 5,650 Direct -3.42% Disposed 256.5% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 100 $61.50 $6,150 5,850 Direct -1.68% Disposed 257.5% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 100 $61.49 $6,149 5,950 Direct -1.65% Disposed 257.6% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 100 $61.14 $6,114 6,050 Direct -1.63% Disposed 259.6% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 200 $61.09 $12,218 6,150 Direct -3.15% Disposed 259.9% (price as of 2026-10-02)
June 4, 2008 BIIB S 10b5-1 500 $61.07 $30,535 6,350 Direct -7.30% Disposed 260.0% (price as of 2026-10-02)
Aug. 24, 2007 BIIB S 10b5-1 6,250 $62.00 $387,500 6,850 Direct -47.71% Disposed 254.6% (price as of 2026-10-02)
Aug. 15, 2007 BIIB S 10b5-1 6,250 $60.00 $375,000 6,850 Direct -47.71% Disposed 266.5% (price as of 2026-10-02)
July 25, 2007 BIIB S 10b5-1 5,000 $58.00 $290,000 6,850 Direct -42.19% Disposed 279.1% (price as of 2026-10-02)
July 24, 2007 BIIB S 10b5-1 5,000 $56.00 $280,000 6,850 Direct -42.19% Disposed 292.6% (price as of 2026-10-02)
May 31, 2007 BIIB S 10b5-1 1,500 $51.91 $77,865 2,250 Direct -40.00% Disposed 323.6% (price as of 2026-10-02)
Nov. 22, 2006 BIIB S 10b5-1 7,500 $52.00 $390,000 0 Direct -100.00% Disposed 322.8% (price as of 2026-10-02)
Nov. 17, 2006 BIIB S 10b5-1 7,500 $50.00 $375,000 0 Direct -100.00% Disposed 339.8% (price as of 2026-10-02)
Nov. 19, 2004 BIIB S 15,000 $55.91 $838,650 0 Direct -100.00% Disposed 293.3% (price as of 2026-10-02)
Nov. 19, 2004 BIIB S 15,000 $55.91 $838,650 15,000 Direct -50.00% Disposed 293.3% (price as of 2026-10-02)
Nov. 13, 2003 BIIB S 25,000 $35.14 $878,500 0 Direct -100.00% Disposed 525.7% (price as of 2026-10-02)

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
June 3, 2009 BIIB Stock Option (Right to Buy) [F1] Common Stock (11,950) $53.43 June 2, 2019 11,950 Acquired
June 19, 2008 BIIB Stock Option (rignt to buy) Common Stock (5,700) $59.17 June 18, 2018 5,700 Acquired
June 19, 2008 BIIB Stock Option (rignt to buy) Common Stock (5,700) $59.17 June 18, 2018 5,700 Acquired
Aug. 24, 2007 BIIB Stock Option (right to buy) Common Stock (6,250) $36.94 Jan. 1, 2014 6,250 Disposed
Aug. 15, 2007 BIIB Stock option (right to buy) Common Stock (6,250) $36.94 Jan. 1, 2014 6,250 Disposed
July 25, 2007 BIIB Stock Option (right to buy) Common Stock (5,000) $34.34 Jan. 1, 2013 5,000 Disposed
July 24, 2007 BIIB Stock Option (right to buy) Common Stock (5,000) $34.34 Jan. 1, 2013 5,000 Disposed
May 31, 2007 BIIB Stock Option (right to buy) Common Stock (5,950) $52.22 May 30, 2017 5,950 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 (2,500) · May 25, 2007 2,500 Disposed
May 25, 2007 BIIB Restricted Stock Unit Common Stock (1,250) · May 25, 2007 1,250 Disposed
Nov. 22, 2006 BIIB Stock Option (right-to-buy) [F2] common stock (7,500) $31.08 Jan. 2, 2010 7,500 Disposed
Nov. 17, 2006 BIIB Stock Option (right-to-buy) [F1] Common Stock (7,500) $31.08 Jan. 2, 2010 7,500 Disposed
Nov. 17, 2006 BIIB Stock Option (right-to-buy) [F2] Common Stock (7,500) $31.08 Jan. 2, 2010 7,500 Disposed
May 25, 2006 BIIB Restricted Stock Units Common Stock (2,500) · · 2,500 Acquired
May 25, 2006 BIIB Employee Stock Option (right-to-buy) Common Stock (6,250) · May 24, 2016 6,250 Acquired
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
Nov. 19, 2004 BIIB Stock Option (right-to-buy) [F1] Common Stock (15,000) $31.08 Jan. 3, 2010 15,000 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
Nov. 13, 2003 BIIB Non-Qualified Stock Option (right to buy) [F1] Common Stock (25,000) $4.67 July 21, 2007 25,000 Disposed

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