Insider trading

Period: 120 months Stock: BIIB Type of trade: Sold × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

45 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

45 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

45 decisions over 120 months Remove this filter
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

45 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
45 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
45 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

45 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
4 Aug 2026
Minor Lloyd Director
Sold on a plan
$119.17K 593 at 200.96
18.1%
Planned (10b5-1)
3 Aug 2026
Minor Lloyd Director
Sold on a plan
$120.58K 593 at 203.34
15.3%
Planned (10b5-1)
9 Feb 2026
Singhal Priya Head of Development
Sold on a plan
$531.55K 2,660 at 199.83
24.9%
Planned (10b5-1)
2 Feb 2026
Singhal Priya Head of Development
Sold on a plan
$134.12K 748 at 179.30
10.7%
Planned (10b5-1)
2 Sep 2025
Singhal Priya Head of Development
Sold on a plan
$69.05K 517 at 133.55
8.2%
Planned (10b5-1)
8 Jul 2025
Izzar Rachid Head of Global Product Strat.
Sold on a plan
$300.11K 2,223 at 135.00
26.0%
Planned (10b5-1)
19 May 2025
Singhal Priya Head of Development
Sold on a plan
$480.51K 3,806 at 126.25
41.2%
Planned (10b5-1)
7 Mar 2025
Sold on a plan
$1.31M 8,760 at 150.02
43.6%
Planned (10b5-1)
9 Dec 2024
Singhal Priya Head of Development
Sold on a plan
$17.29K 110 at 157.21
2.0%
Planned (10b5-1)
3 Sep 2024
Singhal Priya Head of Development
Sold on a plan
$88.02K 431 at 204.22
7.5%
Planned (10b5-1)
2 Apr 2024
Singhal Priya Head of Development
Sold on a plan
$19.82K 93 at 213.09
1.9%
Planned (10b5-1)
22 Feb 2024
Singhal Priya Head of Development
Sold on a plan
$57.96K 262 at 221.23
5.1%
Planned (10b5-1)
16 Feb 2024
Singhal Priya Head of Development
Sold on a plan
$23.92K 108 at 221.49
2.1%
Planned (10b5-1)
12 Feb 2024
Singhal Priya Head of Development
Sold on a plan
$100.33K 419 at 239.45
8.5%
Planned (10b5-1)
2 Feb 2024
Singhal Priya Head of Development
Sold on a plan
$155.92K 634 at 245.93
13.4%
Planned (10b5-1)
11 Dec 2023
Singhal Priya Head of Development
Sold on a plan
$27.28K 110 at 248.00
3.1%
Planned (10b5-1)
5 Sep 2023
Singhal Priya Head of Development
Sold on a plan
$116.12K 431 at 269.43
11.4%
Planned (10b5-1)
3 Jul 2023
Singhal Priya Head of Development
Sold on a plan
$22.91K 81 at 282.87
2.7%
Planned (10b5-1)
28 Apr 2023
Gregory Ginger EVP, Human Resources
Sold on a plan
$804.30K 2,681 at 300.00
24.0%
Planned (10b5-1)
4 Apr 2023
Singhal Priya Head of Development
Sold on a plan
$25.22K 91 at 277.11
3.1%
Planned (10b5-1)
28 Mar 2023
Singhal Priya Head of Development
Sold at will
$153.39K 568 at 270.06
16.7%
Not planned
14 Nov 2022
Gregory Ginger EVP, Human Resources
Sold, plan not stated
$1.68M 5,610 at 300.11
49.6%
27 Oct 2022
ALEXANDER SUSAN H EVP Chief Legal Off & Corp Sec
Sold, plan not stated
$1.55M 5,532 at 280.70
12.3%
7 Jun 2021
Sandrock Alfred Head of Research & Development
Sold, plan not stated
$3.38M 7,672 at 440.00
43.0%
7 Jun 2021
Guindo Chirfi Head of Glob Prod Strat & Com
Sold, plan not stated
$1.36M 3,087 at 440.00
51.4%
Sold half or more
4 Jun 2021
Posner Brian S Director
Sold, plan not stated
$98.70K 360 at 274.17
4.6%
4 Nov 2020
Sandrock Alfred EVP, Research & Development
Sold, plan not stated
$525.00K 1,500 at 350.00
10.3%
11 Mar 2020
Sold, plan not stated 2×
$718.57K 2,434 at 295.22
14.5%
2 Dec 2019
Posner Brian S Director
Sold, plan not stated
$308.43K 1,055 at 292.35
13.1%
18 Mar 2019
PANGIA ROBERT W Director
Sold, plan not stated
$2.01M 6,114 at 328.55
24.8%
26 Sep 2018
Ehlers Michael D EVP, Research and Development
Sold, plan not stated
$350.00K 1,000 at 350.00
18.9%
27 Feb 2018
Sandrock Alfred EVP, Chief Medical Officer
Sold, plan not stated
$75.32K 259 at 290.83
3.8%
23 Feb 2018
Sandrock Alfred EVP, Chief Medical Officer
Sold, plan not stated
$266.44K 908 at 293.44
12.2%
20 Feb 2018
Sandrock Alfred EVP, Chief Medical Officer
Sold, plan not stated
$216.96K 743 at 292.00
10.2%
15 Feb 2018
Sandrock Alfred EVP, Chief Medical Officer
Sold, plan not stated
$386.71K 1,294 at 298.85
15.1%
9 Jan 2018
PANGIA ROBERT W Director
Sold, plan not stated
$1.92M 5,832 at 329.65
24.8%
25 Jul 2017
ALEXANDER SUSAN H EVP Chief Legal Corp Svc & Sec
Sold, plan not stated
$1.44M 4,974 at 290.01
18.3%
19 Jul 2017
ALEXANDER SUSAN H EVP Chief Legal Corp Svc & Sec
Sold, plan not stated
$2.21M 7,758 at 285.00
22.2%
9 Jun 2017
Posner Brian S Director
Sold, plan not stated
$277.84K 1,084 at 256.31
14.6%
25 Apr 2017
Clancy Paul J Executive VP and CFO
Sold, plan not stated
$2.87M 9,892 at 290.00
47.8%
3 Apr 2017
Sandrock Alfred EVP CMO Neuro & Neurodegenerat
Sold, plan not stated
$542.95K 1,981 at 274.08
21.9%
13 Mar 2017
Clancy Paul J Executive VP and CFO
Sold, plan not stated
$2.88M 9,891 at 291.55
32.3%
1 Mar 2017
Sandrock Alfred EVP CMO Neuro & Neurodegenerat
Sold, plan not stated
$282.24K 973 at 290.07
9.7%
9 Jan 2017
PANGIA ROBERT W Director
Sold, plan not stated
$1.61M 5,450 at 295.39
24.7%
1 Dec 2016
Karaboutis Adriana EVP, Tech, Bus. Sol & Corp Aff
Sold, plan not stated
$14.23K 48 at 296.53
0.6%
Showing 1–45 of 45.