United States Pharmaceuticals

Biogen Inc (BIIB)

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Biogen Inc. has seen no insider trading activity within the last three months. The most recent transactions occurred in February 2026, involving both share purchases and sales by company executives. Given that these activities occurred more than three months ago, they do not provide current context regarding the company's recent market performance or upcoming results.
Ticker: BIIB Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Biogen Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Buy 12 Feb 2026
Value US$4,496,578.69 | Price 445.67 | Shares 97,991 (-48.6%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed 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
2026-02-17 2026-02-12 B Purchase
2.0
Murphy Nicole

Head of Pharm Ops and Tech

Officer
97,991 -48.6%
445.67
US$4,496,579 		97,991 -48.6% 445.67 US$4,496,579
2026-02-10 2026-02-09 S Sale
3.5
Singhal Priya

Head of Development

Officer
27,486 -45.2%
53.15
US$1,858,513 		27,486 -45.2% 53.15 US$1,858,513
2026-02-09 2026-02-09 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
30,414
182.82
US$3,951,409 		30,414 182.82 US$3,951,409
2026-02-03 2026-02-02 S Sale
3.5
Singhal Priya

Head of Development

Officer
748 -10.7%
179.30
US$134,116 		748 -10.7% 179.30 US$134,116
2026-02-03 2026-02-02 S Sale
3.5
Singhal Priya

Head of Development

Officer
748 -10.7%
179.30
US$134,116 		748 -10.7% 179.30 US$134,116
2026-02-02 2026-02-02 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
748
179.30
US$134,116 		748 179.30 US$134,116
2025-09-02 2025-09-02 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
517
133.55
US$69,045 		517 133.55 US$69,045
2025-09-02 2025-09-02 S Sale
3.5
Singhal Priya

Head of Development

Officer
517 -8.2%
133.55
US$69,045 		517 -8.2% 133.55 US$69,045
2025-07-16 2025-07-08 S Sale
1.5
Izzar Rachid

Head of Global Product Strat.

Officer
2,223 -26.0%
135.00
US$300,105 		2,223 -26.0% 135.00 US$300,105
2025-07-08 2025-07-08 PrS Proposed sale
1.5
Izzar Rachid

Officer

Officer
2,223
135.00
US$300,105 		2,223 135.00 US$300,105
2025-05-20 2025-05-19 PlS Planned sale
3.5
Singhal Priya

Head of Development

Officer
3,806 -41.2%
126.25
US$480,508 		3,806 -41.2% 126.25 US$480,508
2025-05-19 2025-05-19 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
3,806
126.25
US$480,508 		3,806 126.25 US$480,508
2025-05-05 2025-05-02 B Purchase
2.6
DORSA CAROLINE
Non-Executive Director
1,235 +4.6%
122.72
US$151,559 		1,235 +4.6% 122.72 US$151,559
2025-03-10 2025-03-07 S Sale
3.1
SHERWIN STEPHEN A
Non-Executive Director
8,760 -43.6%
150.02
US$1,314,142 		8,760 -43.6% 150.02 US$1,314,142
2025-03-07 2025-03-07 PrS Proposed sale
3.1
STEPHEN A SHERWIN

Director

Non-Executive Director
8,760
147.37
US$1,290,961 		8,760 147.37 US$1,290,961
2024-12-09 2024-12-09 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
110
157.21
US$17,293 		110 157.21 US$17,293
2024-12-09 2024-12-09 S Sale
3.5
Singhal Priya

Head of Development

Officer
110 -2.0%
157.21
US$17,293 		110 -2.0% 157.21 US$17,293
2024-09-05 2024-09-03 S Sale
3.5
Singhal Priya

Head of Development

Officer
431 -7.5%
204.22
US$88,019 		431 -7.5% 204.22 US$88,019
2024-09-03 2024-09-03 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
431
204.22
US$88,019 		431 204.22 US$88,019
2024-04-03 2024-04-02 PlS Planned sale
3.5
Singhal Priya

Head of Development

Officer
93 -1.9%
213.09
US$19,817 		93 -1.9% 213.09 US$19,817
2024-04-02 2024-04-02 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
93
213.09
US$19,817 		93 213.09 US$19,817
2024-02-26 2024-02-22 S Sale
3.5
Singhal Priya

Head of Development

Officer
262 -5.1%
221.23
US$57,962 		262 -5.1% 221.23 US$57,962
2024-02-22 2024-02-22 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
262
221.23
US$57,962 		262 221.23 US$57,962
2024-02-21 2024-02-21 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
108
221.49
US$23,921 		108 221.49 US$23,921
2024-02-21 2024-02-16 S Sale
3.5
Singhal Priya

Head of Development

Officer
108 -2.1%
221.49
US$23,921 		108 -2.1% 221.49 US$23,921
2024-02-20 2024-02-15 B Purchase
2.8
Rowinsky Eric K
Non-Executive Director
455 +2.3%
222.54
US$101,256 		455 +2.3% 222.54 US$101,256
2024-02-13 2024-02-12 S Sale
3.5
Singhal Priya

Head of Development

Officer
419 -8.5%
239.45
US$100,330 		419 -8.5% 239.45 US$100,330
2024-02-12 2024-02-12 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
419
239.45
US$100,330 		419 239.45 US$100,330
2024-02-05 2024-02-02 S Sale
3.5
Singhal Priya

Head of Development

Officer
634 -13.4%
245.93
US$155,920 		634 -13.4% 245.93 US$155,920
2024-02-02 2024-02-02 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
634
245.93
US$155,920 		634 245.93 US$155,920
2023-12-12 2023-12-11 S Sale
3.5
Singhal Priya

Head of Development

Officer
110 -3.1%
248.00
US$27,280 		110 -3.1% 248.00 US$27,280
2023-12-11 2023-12-11 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
110
248.00
US$27,280 		110 248.00 US$27,280
2023-09-06 2023-09-05 S Sale
3.5
Singhal Priya

Head of Development

Officer
431 -11.4%
269.43
US$116,124 		431 -11.4% 269.43 US$116,124
2023-09-05 2023-09-05 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
431
269.43
US$116,124 		431 269.43 US$116,124
2023-07-05 2023-07-03 S Sale
3.5
Singhal Priya

Head of Development

Officer
81 -2.7%
282.87
US$22,912 		81 -2.7% 282.87 US$22,912
2023-07-03 2023-07-03 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
81
282.87
US$22,912 		81 282.87 US$22,912
2023-05-02 2023-04-28 PlS Planned sale
Gregory Ginger

EVP, Human Resources

Officer
2,681 -24.0%
300.00
US$804,300 		2,681 -24.0% 300.00 US$804,300
2023-04-28 2023-04-28 PrS Proposed sale
Gregory Ginger

Officer

Officer
2,681
300.00
US$804,300 		2,681 300.00 US$804,300
2023-04-06 2023-04-04 PlS Planned sale
3.5
Singhal Priya

Head of Development

Officer
91 -3.1%
277.11
US$25,217 		91 -3.1% 277.11 US$25,217
2023-04-04 2023-04-04 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
91
277.11
US$25,217 		91 277.11 US$25,217
2023-03-30 2023-03-28 PlS Planned sale
3.5
Singhal Priya

Head of Development

Officer
568 -16.7%
270.06
US$153,394 		568 -16.7% 270.06 US$153,394
2023-03-28 2023-03-28 PrS Proposed sale
3.5
Singhal Priya

Officer

Officer
568
270.06
US$153,394 		568 270.06 US$153,394
2022-12-12 2022-11-14 PlS Planned sale
Gregory Ginger

EVP, Human Resources

Officer
5,610 -49.6%
300.11
US$1,683,617 		5,610 -49.6% 300.11 US$1,683,617
2022-10-28 2022-10-27 PlS Planned sale
ALEXANDER SUSAN H

EVP Chief Legal Off & Corp Sec

Officer
5,532 -12.3%
280.70
US$1,552,832 		5,532 -12.3% 280.70 US$1,552,832
2021-06-09 2021-06-07 PlS Planned sale
3.0
Sandrock Alfred

Head of Research & Development

Officer
7,672 -43.0%
440.00
US$3,375,680 		7,672 -43.0% 440.00 US$3,375,680
2021-06-07 2021-06-04 PlS Planned sale
3.8
Posner Brian S
Non-Executive Director
360 -4.6%
274.17
US$98,701 		360 -4.6% 274.17 US$98,701
2021-02-10 2021-02-09 B Purchase
2.8
Mantas Jesus B
Non-Executive Director
898 +43.9%
267.00
US$239,766 		898 +43.9% 267.00 US$239,766
2020-12-01 2020-11-30 PP Planned purchase
Vounatsos Michel

Chief Executive Officer

Executive Director
3,100 +9.8%
241.31
US$748,047 		3,100 +9.8% 241.31 US$748,047
2020-11-06 2020-11-04 PlS Planned sale
3.0
Sandrock Alfred

EVP, Research & Development

Officer
1,500 -10.3%
350.00
US$525,000 		1,500 -10.3% 350.00 US$525,000
2020-03-12 2020-03-11 PlS Planned sale
3.1
SHERWIN STEPHEN A
Non-Executive Director
270 -1.7%
295.29
US$79,728 		270 -1.7% 295.29 US$79,728
2020-03-12 2020-03-11 PlS Planned sale
3.1
SHERWIN STEPHEN A
Non-Executive Director
2,164 -13.1%
295.22
US$638,845 		2,164 -13.1% 295.22 US$638,845
2019-12-03 2019-12-02 PlS Planned sale Posner Brian S Non-Executive Director
1,055 -13.1%
292.35
US$308,429 		1,055 -13.1% 292.35 US$308,429
2019-05-02 2019-05-02 B Purchase
2.8
DENNER ALEXANDER J
Non-Executive Director
38,000 +6.3%
231.24
US$8,787,120 		38,000 +6.3% 231.24 US$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
US$1,007,169 		4,351 +26.1% 231.48 US$1,007,169
2019-05-02 2019-05-01 B Purchase
2.8
DENNER ALEXANDER J
Non-Executive Director
30,000 +5.2%
229.46
US$6,883,800 		30,000 +5.2% 229.46 US$6,883,800
2019-05-02 2019-04-30 B Purchase
2.8
DENNER ALEXANDER J
Non-Executive Director
50,342 +9.6%
229.25
US$11,540,904 		50,342 +9.6% 229.25 US$11,540,904
2019-03-19 2019-03-18 PlS Planned sale
1.5
PANGIA ROBERT W
6,114 -24.8%
328.55
US$2,008,755 		6,114 -24.8% 328.55 US$2,008,755
2019-02-01 2019-02-01 B Purchase
2.8
DENNER ALEXANDER J
Non-Executive Director
7,000 +1.4%
328.45
US$2,299,163 		7,000 +1.4% 328.45 US$2,299,163
2019-02-01 2019-01-31 B Purchase
2.8
DENNER ALEXANDER J
Non-Executive Director
25,800 +5.2%
330.52
US$8,527,393 		25,800 +5.2% 330.52 US$8,527,393
2019-02-01 2019-01-30 B Purchase
2.8
DENNER ALEXANDER J
Non-Executive Director
30,000 +6.5%
324.86
US$9,745,851 		30,000 +6.5% 324.86 US$9,745,851
2018-09-27 2018-09-26 PlS Planned sale Ehlers Michael D

EVP, Research and Development

Officer
1,000 -18.9%
350.00
US$350,000 		1,000 -18.9% 350.00 US$350,000
2018-04-27 2018-04-25 B Purchase DENNER ALEXANDER J Non-Executive Director
48,000 +11.6%
269.91
US$12,955,680 		48,000 +11.6% 269.91 US$12,955,680
2018-02-28 2018-02-27 PlS Planned sale Sandrock Alfred

EVP, Chief Medical Officer

Officer
259 -3.8%
290.83
US$75,325 		259 -3.8% 290.83 US$75,325
2018-02-27 2018-02-23 PlS Planned sale Sandrock Alfred

EVP, Chief Medical Officer

Officer
908 -12.2%
293.44
US$266,444 		908 -12.2% 293.44 US$266,444
2018-02-21 2018-02-20 PlS Planned sale Sandrock Alfred

EVP, Chief Medical Officer

Officer
743 -10.2%
292.00
US$216,956 		743 -10.2% 292.00 US$216,956
2018-02-20 2018-02-15 PlS Planned sale Sandrock Alfred

EVP, Chief Medical Officer

Officer
1,294 -15.1%
298.85
US$386,712 		1,294 -15.1% 298.85 US$386,712
2018-01-10 2018-01-09 PlS Planned sale PANGIA ROBERT W Non-Executive Director
5,832 -24.8%
329.65
US$1,922,519 		5,832 -24.8% 329.65 US$1,922,519
2018-01-02 2017-12-29 PP Planned purchase Vounatsos Michel

Chief Executive Officer

Executive Director
780 +19.0%
320.55
US$250,029 		780 +19.0% 320.55 US$250,029
2017-11-30 2017-11-29 B Purchase DENNER ALEXANDER J
10,000 +2.5%
319.84
US$3,198,400 		10,000 +2.5% 319.84 US$3,198,400
2017-11-30 2017-11-28 B Purchase DENNER ALEXANDER J
20,000 +5.2%
316.12
US$6,322,400 		20,000 +5.2% 316.12 US$6,322,400
2017-07-26 2017-07-25 PlS Planned sale ALEXANDER SUSAN H

EVP Chief Legal Corp Svc & Sec

Officer
4,974 -18.3%
290.01
US$1,442,510 		4,974 -18.3% 290.01 US$1,442,510
2017-07-20 2017-07-19 PlS Planned sale ALEXANDER SUSAN H

EVP Chief Legal Corp Svc & Sec

Officer
7,758 -22.2%
285.00
US$2,211,030 		7,758 -22.2% 285.00 US$2,211,030
2017-06-12 2017-06-09 PlS Planned sale Posner Brian S
1,084 -14.6%
256.31
US$277,840 		1,084 -14.6% 256.31 US$277,840
2017-05-02 2017-05-01 PP Planned purchase Vounatsos Michel

Chief Executive Officer

Executive Director
1,402 +91.9%
271.35
US$380,433 		1,402 +91.9% 271.35 US$380,433
2017-05-01 2017-04-27 B Purchase DENNER ALEXANDER J Non-Executive Director
58,858 +18.1%
278.48
US$16,390,776 		58,858 +18.1% 278.48 US$16,390,776
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