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Biogen

BIIB Net buying
CIK 0000875045 #69 in the set updated 19 Sep 2026
Bought (120 mo)
$94.09M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$40.52M
$4.50M on a plan · $15.21M straight out of an exercise
Sold at will
$20.81M
22 of 49 sales
Net
+$53.57M
+$73.28M against sales at will

By person

41 insiders · 76 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
DENNER ALEXANDER J
Director
$90.83M (11)
+$90.83M
658,099
0.4454%
$132.25M
+106.9%
DORSA CAROLINE
Director
$151.56K (1)
$8.66M (1) scheduled
−$8.51M
31,002
0.0210%
$6.23M
+81.1%
Clancy Paul J
Executive VP and CFO
$5.75M (2)
−$5.75M
10,813
0.0073%
$2.17M
−59.8%
Sandrock Alfred
Head of Research & Development
$5.67M (8)
−$5.67M
10,169
0.0069%
$2.04M
+17.6%
PANGIA ROBERT W
Director
$5.54M (3) scheduled
−$5.54M
20,632
0.0140%
$4.15M
+23.9%
ALEXANDER SUSAN H
EVP Chief Legal Officer
$5.21M (3)
−$5.21M
61,889
0.0419%
$12.44M
+94.4%
Vounatsos Michel
Chief Executive Officer
$2.77M (5)
+$2.77M
67,261
0.0455%
$13.52M
+12,421%
Gregory Ginger
EVP, Human Resources
$2.49M (2)
−$2.49M
22,359
0.0151%
$4.49M
+3,341%
SHERWIN STEPHEN A
Director
$2.03M (3) scheduled
−$2.03M
15,193
0.0103%
$3.05M
+236.9%
Singhal Priya
Head of Development
$2.02M (16) scheduled
−$2.02M
8,043
0.0054%
$1.62M
+327.6%
Guindo Chirfi
Head of Glob Prod Strat & Com
$1.36M (1)
−$1.36M
7,364
0.0050%
$1.48M
Posner Brian S
Director
$684.97K (3)
−$684.97K
8,175
0.0055%
$1.64M
+31.1%
Ehlers Michael D
EVP, Research and Development
$350.00K (1)
−$350.00K
8,025
0.0054%
$1.61M
+140.3%
Izzar Rachid
Head of Global Product Strat.
$300.11K (1) scheduled
−$300.11K
11,011
0.0075%
$2.21M
Mantas Jesus B
Director
$239.77K (1)
+$239.77K
11,263
0.0076%
$2.26M
Minor Lloyd
Director
$239.75K (2) scheduled
−$239.75K
2,689
0.0018%
$540.38K
Karaboutis Adriana
EVP, Tech, Bus. Sol & Corp Aff
$214.90K (3)
−$214.90K
8,752
0.0059%
$1.76M
+6.8%
Rowinsky Eric K
Director
$101.26K (1)
+$101.26K
25,844
0.0175%
$5.19M
+97.4%
Murphy Nicole
Head of Pharm Ops and Tech
$585.11 (1)
+$585.11
19,611
0.0133%
$3.94M
+1,067%
Viehbacher Christopher
President and CEO
29,924
0.0203%
$6.01M
+327.5%
McDonnell Michael R.
EVP, Chief Financial Officer
24,341
0.0165%
$4.89M
Mulligan Richard
Director
15,099
0.0102%
$3.03M
+68.3%
LEAMING NANCY
Director
13,763
0.0093%
$2.77M
+52.8%
Kramer Robin
Chief Financial Officer
11,472
0.0078%
$2.31M
+2,905%
HAWKINS WILLIAM A
Director
10,365
0.0070%
$2.08M
PAPADOPOULOS STELIOS
Director
10,095
0.0068%
$2.03M
SCHENK LYNN
Director
9,032
0.0061%
$1.82M
+51.2%
Freire Maria C
Director
8,820
0.0060%
$1.77M
McKenzie Paul
EVP Pharmaceutical Oper & Tech
7,235
0.0049%
$1.45M
+1,697%
DiPietro Kenneth
EVP Human Resources
7,177
0.0049%
$1.44M
+82.3%
LANGER SUSAN
Director
6,634
0.0045%
$1.33M
+1,345%
Keeney Adam
Head of Corporate Development
6,365
0.0043%
$1.28M
Patolawala Monish D
Director
5,215
0.0035%
$1.05M
Galdes Alphonse
EVP Pharmaceutical Oper & Tech
5,064
0.0034%
$1.02M
+213.3%
COVINO GREGORY F
VP, Chief Accounting Officer
4,744
0.0032%
$953.43K
+51.7%
Grogan Jane
Head of Research
4,058
0.0027%
$815.50K
Pangalos Menelas N
Director
3,875
0.0026%
$778.72K
CAPELLO JEFFREY D
EVP & Chief Financial Officer
3,118
0.0021%
$626.59K
JONES WILLIAM D /CA/
Director
2,145
0.0015%
$431.06K
Godbout Sean
Chief Accounting Officer
1,342
0.0009%
$269.62K
+181.5%
Karp Daniel
EVP, Corporate Development
930
0.0006%
$186.97K
+636.1%
Insider
Date
Role
Action
Shares
Price
Amount
Singhal Priya
28 Mar 2023
Head of Development
Sell
568
$270.06
$153.39K
Gregory Ginger
14 Nov 2022
EVP, Human Resources
Sell
5,610
$300.11
$1.68M
ALEXANDER SUSAN H
27 Oct 2022
EVP Chief Legal Off & Corp Sec
Sell
5,532
$280.70
$1.55M
Guindo Chirfi
7 Jun 2021
Head of Glob Prod Strat & Com
Sell
3,087
$440.00
$1.36M
Sandrock Alfred
7 Jun 2021
Head of Research & Development
Sell
7,672
$440.00
$3.38M
Posner Brian S
4 Jun 2021
Director
Sell
360
$274.17
$98.70K
Sandrock Alfred
4 Nov 2020
EVP, Research & Development
Sell
1,500
$350.00
$525.00K
Posner Brian S
2 Dec 2019
Director
Sell
1,055
$292.35
$308.43K
Ehlers Michael D
26 Sep 2018
EVP, Research and Development
Sell
1,000
$350.00
$350.00K
Sandrock Alfred
27 Feb 2018
EVP, Chief Medical Officer
Sell
259
$290.83
$75.32K
Sandrock Alfred
20 Feb 2018
EVP, Chief Medical Officer
Sell
743
$292.00
$216.96K
Sandrock Alfred
15 Feb 2018
EVP, Chief Medical Officer
Sell
1,294
$298.85
$386.71K
ALEXANDER SUSAN H
25 Jul 2017
EVP Chief Legal Corp Svc & Sec
Sell
4,974
$290.01
$1.44M
ALEXANDER SUSAN H
19 Jul 2017
EVP Chief Legal Corp Svc & Sec
Sell
7,758
$285.00
$2.21M
Posner Brian S
9 Jun 2017
Director
Sell
1,084
$256.31
$277.84K
Clancy Paul J
25 Apr 2017
Executive VP and CFO
Sell
9,892
$290.00
$2.87M
Sandrock Alfred
3 Apr 2017
EVP CMO Neuro & Neurodegenerat
Sell
1,981
$274.08
$542.95K
Clancy Paul J
13 Mar 2017
Executive VP and CFO
Sell
9,891
$291.55
$2.88M
Sandrock Alfred
1 Mar 2017
EVP CMO Neuro & Neurodegenerat
Sell
973
$290.07
$282.24K
Karaboutis Adriana
1 Dec 2016
EVP, Tech, Bus. Sol & Corp Aff
Sell
48
$296.53
$14.23K
Karaboutis Adriana
4 Oct 2016
EVP, Tech, Bus. Sol & Corp Aff
Sell
262
$311.94
$81.73K
Karaboutis Adriana
3 Oct 2016
EVP, Tech, Bus. Sol & Corp Aff
Sell
380
$313.00
$118.94K

What was left out

Form 4 filings counted 437
Amendments (4/A) skipped 1
Filings about a different issuer 9
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 19
Sales straight out of an exercise 8
Sales at will 22
Transactions with no price 0
Shares from compensation/vesting 969,482
Sales filed before the plan box existed 21
History held since 26 Sep 2016