Stock chart
Ticker: BIIB Exchange: NSM


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Purchase Sale Planned purchase Planned sale Net purchase Net sale Earnings
Earnings
 
Value bought

Past 90 days

 
Value sold

Past 90 days

 
Net insiders buying

Past 90 days

 
Trades (buy and sell)

Past 90 days

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PS: Planned sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2025-03-10 2025-03-07 S Sale

SHERWIN STEPHEN A

Non-Executive Director
8,760 -43.6%
150.02
USD 1,314,142
8,760 -43.6% 150.02 USD 1,314,142
2024-12-09 2024-12-09 S Sale

Singhal Priya

Head of Development

Officer
110 -2.0%
157.21
USD 17,293
110 -2.0% 157.21 USD 17,293
2024-09-05 2024-09-03 S Sale

Singhal Priya

Head of Development

Officer
431 -7.5%
204.22
USD 88,019
431 -7.5% 204.22 USD 88,019
2024-04-03 2024-04-02 PS Planned sale

Singhal Priya

Head of Development

Officer
93 -1.9%
213.09
USD 19,817
93 -1.9% 213.09 USD 19,817
2024-02-26 2024-02-22 S Sale

Singhal Priya

Head of Development

Officer
262 -5.1%
221.23
USD 57,962
262 -5.1% 221.23 USD 57,962
2024-02-21 2024-02-16 S Sale

Singhal Priya

Head of Development

Officer
108 -2.1%
221.49
USD 23,921
108 -2.1% 221.49 USD 23,921
2024-02-20 2024-02-15 B Purchase

Rowinsky Eric K

Non-Executive Director
455 +2.3%
222.54
USD 101,256
455 +2.3% 222.54 USD 101,256
2024-02-13 2024-02-12 S Sale

Singhal Priya

Head of Development

Officer
419 -8.5%
239.45
USD 100,330
419 -8.5% 239.45 USD 100,330
2024-02-05 2024-02-02 S Sale

Singhal Priya

Head of Development

Officer
634 -13.4%
245.93
USD 155,920
634 -13.4% 245.93 USD 155,920
2023-12-12 2023-12-11 S Sale

Singhal Priya

Head of Development

Officer
110 -3.1%
248.00
USD 27,280
110 -3.1% 248.00 USD 27,280
2023-09-06 2023-09-05 S Sale

Singhal Priya

Head of Development

Officer
431 -11.4%
269.43
USD 116,124
431 -11.4% 269.43 USD 116,124
2023-07-05 2023-07-03 S Sale

Singhal Priya

Head of Development

Officer
81 -2.7%
282.87
USD 22,912
81 -2.7% 282.87 USD 22,912
2023-05-02 2023-04-28 PS Planned sale

Gregory Ginger

EVP, Human Resources

Officer
2,681 -24.0%
300.00
USD 804,300
2,681 -24.0% 300.00 USD 804,300
2023-04-06 2023-04-04 PS Planned sale

Singhal Priya

Head of Development

Officer
91 -3.1%
277.11
USD 25,217
91 -3.1% 277.11 USD 25,217
2023-03-30 2023-03-28 PS Planned sale

Singhal Priya

Head of Development

Officer
568 -16.7%
270.06
USD 153,394
568 -16.7% 270.06 USD 153,394
2022-12-12 2022-11-14 PS Planned sale

Gregory Ginger

EVP, Human Resources

Officer
5,610 -49.6%
300.11
USD 1,683,617
5,610 -49.6% 300.11 USD 1,683,617
2022-10-28 2022-10-27 PS Planned sale

ALEXANDER SUSAN H

EVP Chief Legal Off & Corp Sec

Officer
5,532 -12.3%
280.70
USD 1,552,832
5,532 -12.3% 280.70 USD 1,552,832
2021-06-09 2021-06-07 PS Planned sale

Sandrock Alfred

Head of Research & Development

Officer
7,672 -43.0%
440.00
USD 3,375,680
7,672 -43.0% 440.00 USD 3,375,680
2021-06-07 2021-06-04 PS Planned sale

Posner Brian S

Non-Executive Director
360 -4.6%
274.17
USD 98,701
360 -4.6% 274.17 USD 98,701
2021-02-10 2021-02-09 B Purchase

Mantas Jesus B

Non-Executive Director
898 +43.9%
267.00
USD 239,766
898 +43.9% 267.00 USD 239,766
2020-12-01 2020-11-30 PP Planned purchase

Vounatsos Michel

Chief Executive Officer

Executive Director
3,100 +9.8%
241.31
USD 748,047
3,100 +9.8% 241.31 USD 748,047
2020-11-06 2020-11-04 PS Planned sale

Sandrock Alfred

EVP, Research & Development

Officer
1,500 -10.3%
350.00
USD 525,000
1,500 -10.3% 350.00 USD 525,000
2020-03-12 2020-03-11 PS Planned sale

SHERWIN STEPHEN A

Non-Executive Director
270 -1.7%
295.29
USD 79,728
270 -1.7% 295.29 USD 79,728
2020-03-12 2020-03-11 PS Planned sale

SHERWIN STEPHEN A

Non-Executive Director
2,164 -13.1%
295.22
USD 638,845
2,164 -13.1% 295.22 USD 638,845
2019-12-03 2019-12-02 PS Planned sale

Posner Brian S

Non-Executive Director
1,055 -13.1%
292.35
USD 308,429
1,055 -13.1% 292.35 USD 308,429
2019-05-02 2019-05-02 B Purchase

DENNER ALEXANDER J

Non-Executive Director
38,000 +6.3%
231.24
USD 8,787,120
38,000 +6.3% 231.24 USD 8,787,120
2019-05-02 2019-05-01 PP Planned purchase

Vounatsos Michel

Chief Executive Officer

Executive Director
4,351 +26.1%
231.48
USD 1,007,169
4,351 +26.1% 231.48 USD 1,007,169
2019-05-02 2019-05-01 B Purchase

DENNER ALEXANDER J

Non-Executive Director
30,000 +5.2%
229.46
USD 6,883,800
30,000 +5.2% 229.46 USD 6,883,800
2019-05-02 2019-04-30 B Purchase

DENNER ALEXANDER J

Non-Executive Director
50,342 +9.6%
229.25
USD 11,540,904
50,342 +9.6% 229.25 USD 11,540,904
2019-03-19 2019-03-18 PS Planned sale

PANGIA ROBERT W

6,114 -24.8%
328.55
USD 2,008,755
6,114 -24.8% 328.55 USD 2,008,755
2019-02-01 2019-02-01 B Purchase

DENNER ALEXANDER J

Non-Executive Director
7,000 +1.4%
328.45
USD 2,299,163
7,000 +1.4% 328.45 USD 2,299,163
2019-02-01 2019-01-31 B Purchase

DENNER ALEXANDER J

Non-Executive Director
25,800 +5.2%
330.52
USD 8,527,393
25,800 +5.2% 330.52 USD 8,527,393
2019-02-01 2019-01-30 B Purchase

DENNER ALEXANDER J

Non-Executive Director
30,000 +6.5%
324.86
USD 9,745,851
30,000 +6.5% 324.86 USD 9,745,851
2018-09-27 2018-09-26 PS Planned sale

Ehlers Michael D

EVP, Research and Development

Officer
1,000 -18.9%
350.00
USD 350,000
1,000 -18.9% 350.00 USD 350,000
2018-04-27 2018-04-25 B Purchase

DENNER ALEXANDER J

Non-Executive Director
48,000 +11.6%
269.91
USD 12,955,680
48,000 +11.6% 269.91 USD 12,955,680
2018-02-28 2018-02-27 PS Planned sale

Sandrock Alfred

EVP, Chief Medical Officer

Officer
259 -3.8%
290.83
USD 75,325
259 -3.8% 290.83 USD 75,325
2018-02-27 2018-02-23 PS Planned sale

Sandrock Alfred

EVP, Chief Medical Officer

Officer
908 -12.2%
293.44
USD 266,444
908 -12.2% 293.44 USD 266,444
2018-02-21 2018-02-20 PS Planned sale

Sandrock Alfred

EVP, Chief Medical Officer

Officer
743 -10.2%
292.00
USD 216,956
743 -10.2% 292.00 USD 216,956
2018-02-20 2018-02-15 PS Planned sale

Sandrock Alfred

EVP, Chief Medical Officer

Officer
1,294 -15.1%
298.85
USD 386,712
1,294 -15.1% 298.85 USD 386,712
2018-01-10 2018-01-09 PS Planned sale

PANGIA ROBERT W

Non-Executive Director
5,832 -24.8%
329.65
USD 1,922,519
5,832 -24.8% 329.65 USD 1,922,519
2018-01-02 2017-12-29 PP Planned purchase

Vounatsos Michel

Chief Executive Officer

Executive Director
780 +19.0%
320.55
USD 250,029
780 +19.0% 320.55 USD 250,029
2017-11-30 2017-11-29 B Purchase

DENNER ALEXANDER J

10,000 +2.5%
319.84
USD 3,198,400
10,000 +2.5% 319.84 USD 3,198,400
2017-11-30 2017-11-28 B Purchase

DENNER ALEXANDER J

20,000 +5.2%
316.12
USD 6,322,400
20,000 +5.2% 316.12 USD 6,322,400
2017-07-26 2017-07-25 PS Planned sale

ALEXANDER SUSAN H

EVP Chief Legal Corp Svc & Sec

Officer
4,974 -18.3%
290.01
USD 1,442,510
4,974 -18.3% 290.01 USD 1,442,510
2017-07-20 2017-07-19 PS Planned sale

ALEXANDER SUSAN H

EVP Chief Legal Corp Svc & Sec

Officer
7,758 -22.2%
285.00
USD 2,211,030
7,758 -22.2% 285.00 USD 2,211,030
2017-06-12 2017-06-09 PS Planned sale

Posner Brian S

1,084 -14.6%
256.31
USD 277,840
1,084 -14.6% 256.31 USD 277,840
2017-05-02 2017-05-01 PP Planned purchase

Vounatsos Michel

Chief Executive Officer

Executive Director
1,402 +91.9%
271.35
USD 380,433
1,402 +91.9% 271.35 USD 380,433
2017-05-01 2017-04-27 B Purchase

DENNER ALEXANDER J

Non-Executive Director
58,858 +18.1%
278.48
USD 16,390,776
58,858 +18.1% 278.48 USD 16,390,776
2017-05-01 2017-04-27 B Purchase

DENNER ALEXANDER J

Non-Executive Director
15,000 +4.8%
278.58
USD 4,178,700
15,000 +4.8% 278.58 USD 4,178,700
2017-04-27 2017-04-25 PS Planned sale

Clancy Paul J

Executive VP and CFO

9,892 -47.8%
290.00
USD 2,868,680
9,892 -47.8% 290.00 USD 2,868,680
2017-04-04 2017-04-03 PS Planned sale

Sandrock Alfred

EVP CMO Neuro & Neurodegenerat

1,981 -21.9%
274.08
USD 542,952
1,981 -21.9% 274.08 USD 542,952
2017-03-14 2017-03-13 PS Planned sale

Clancy Paul J

Executive VP and CFO

9,891 -32.3%
291.55
USD 2,883,721
9,891 -32.3% 291.55 USD 2,883,721
2017-03-03 2017-03-01 PS Planned sale

Sandrock Alfred

EVP CMO Neuro & Neurodegenerat

973 -9.7%
290.07
USD 282,238
973 -9.7% 290.07 USD 282,238
2017-03-01 2017-02-27 PP Planned purchase

Vounatsos Michel

Chief Executive Officer

Executive Director
1,333 +1320.7%
285.39
USD 380,425
1,333 +1320.7% 285.39 USD 380,425
2017-01-10 2017-01-09 PS Planned sale

PANGIA ROBERT W

Non-Executive Director
5,450 -24.7%
295.39
USD 1,609,876
5,450 -24.7% 295.39 USD 1,609,876
2016-12-05 2016-12-01 PS Planned sale

Karaboutis Adriana

EVP, Tech, Bus. Sol & Corp Aff

Officer
48 -0.6%
296.53
USD 14,233
48 -0.6% 296.53 USD 14,233
2016-10-05 2016-10-04 PS Planned sale

Karaboutis Adriana

EVP, Tech, Bus. Sol & Corp Aff

Officer
262 -3.3%
311.94
USD 81,728
262 -3.3% 311.94 USD 81,728
2016-10-04 2016-10-03 PS Planned sale

Karaboutis Adriana

EVP, Tech, Bus. Sol & Corp Aff

Officer
380 -4.6%
313.00
USD 118,940
380 -4.6% 313.00 USD 118,940
2016-09-26 2016-09-22 PS Planned sale

DORSA CAROLINE

Non-Executive Director
27,570 -61.7%
314.00
USD 8,656,980
27,570 -61.7% 314.00 USD 8,656,980
2016-07-22 2016-07-21 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
157 -0.3%
280.00
USD 43,960
157 -0.3% 280.00 USD 43,960
2016-06-07 2016-06-06 PS Planned sale

Koppel Adam

EVP, Strategy and Bus. Dev.

Officer
555 -18.8%
290.00
USD 160,950
555 -18.8% 290.00 USD 160,950
2016-06-06 2016-06-03 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
842 -1.5%
290.00
USD 244,180
842 -1.5% 290.00 USD 244,180
2016-06-02 2016-06-01 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
487 -0.9%
287.97
USD 140,241
487 -0.9% 287.97 USD 140,241
2016-06-02 2016-05-31 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
3,368 -5.6%
290.00
USD 976,720
3,368 -5.6% 290.00 USD 976,720
2016-05-27 2016-05-25 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
157 -0.3%
280.00
USD 43,960
157 -0.3% 280.00 USD 43,960
2016-05-04 2016-05-02 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
487 -0.8%
274.74
USD 133,798
487 -0.8% 274.74 USD 133,798
2016-04-07 2016-04-06 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
157 -0.3%
280.00
USD 43,960
157 -0.3% 280.00 USD 43,960
2016-04-07 2016-04-06 PS Planned sale

Koppel Adam

EVP, Strategy and Bus. Dev.

Officer
102 -5.2%
275.00
USD 28,050
102 -5.2% 275.00 USD 28,050
2016-04-05 2016-04-01 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
487 -0.8%
258.83
USD 126,050
487 -0.8% 258.83 USD 126,050
2016-03-03 2016-03-01 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
487 -0.8%
261.37
USD 127,287
487 -0.8% 261.37 USD 127,287
2016-02-26 2016-02-25 PS Planned sale

Sandrock Alfred

EVP CMO Neuro & Neurodegenerat

Officer
183 -2.2%
261.90
USD 47,928
183 -2.2% 261.90 USD 47,928
2016-02-26 2016-02-25 PS Planned sale

Karaboutis Adriana

EVP, Tech, Bus. Sol & Corp Aff

Officer
84 -1.0%
261.90
USD 22,000
84 -1.0% 261.90 USD 22,000
2016-02-19 2016-02-17 PS Planned sale

SCANGOS GEORGE A

Chief Executive Officer

Executive Director
487 -0.8%
256.16
USD 124,750
487 -0.8% 256.16 USD 124,750
2016-02-19 2016-02-17 PS Planned sale

Sandrock Alfred

EVP CMO Neuro & Neurodegenerat

Officer
722 -8.3%
256.16
USD 184,948
722 -8.3% 256.16 USD 184,948
2016-02-10 2016-02-09 PS Planned sale

Sandrock Alfred

EVP CMO Neuro & Neurodegenerat

Officer
852 -9.9%
246.54
USD 210,052
852 -9.9% 246.54 USD 210,052
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