Last 12 months
Inside the activity.
1 purchase rows · 4 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 1 | 2 |
| Mar 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Aug 2026 | 0 | 2 |
| Sep 2026 | 0 | 0 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| December 01, 2016 Filed Dec 5, 2016 21:34 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
SaleCommon Stock | 48 | $296.53 | $14,233.44 |
DisclosureSEC source: 0001127602-16-069152 · form4.xml · nonDerivative · entry 2 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,360 F1 · kind: Sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934. Read SEC document |
| December 01, 2016 Filed Dec 5, 2016 21:34 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
Tax withholdingCommon Stock | 171 | $295.78 | $50,578.38 |
DisclosureSEC source: 0001127602-16-069152 · form4.xml · nonDerivative · entry 1 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,408 Read SEC document |
| December 01, 2016 Filed Dec 5, 2016 21:32 UTC |
COVINO GREGORY FVP, Chief Accounting Officer
|
Tax withholdingCommon Stock | 53 | $295.78 | $15,676.34 |
DisclosureSEC source: 0001127602-16-069149 · form4.xml · nonDerivative · entry 2 COVINO GREGORY F · CIK 0001224116 · VP, Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,883.8231 Read SEC document |
| December 01, 2016 Filed Dec 5, 2016 21:32 UTC |
COVINO GREGORY FVP, Chief Accounting Officer
|
GrantCommon Stock | 930 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-16-069149 · form4.xml · nonDerivative · entry 1 COVINO GREGORY F · CIK 0001224116 · VP, Chief Accounting Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,936.8231 Read SEC document |
| November 08, 2016 Filed Nov 14, 2016 21:32 UTC |
SHERWIN STEPHEN ADirector
|
GiftCommon Stock | 1,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-16-066963 · form4.xml · nonDerivative · entry 1 SHERWIN STEPHEN A · CIK 0001079462 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,905 Read SEC document |
| October 04, 2016 Filed Oct 5, 2016 20:24 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
SaleCommon Stock | 262 | $311.94 | $81,728.28 |
DisclosureSEC source: 0001127602-16-064339 · form4.xml · nonDerivative · entry 1 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,579 F1 · kind: Sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934. Read SEC document |
| October 03, 2016 Filed Oct 4, 2016 21:02 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
SaleCommon Stock | 380 | $313.00 | $118,940.00 |
DisclosureSEC source: 0001127602-16-064102 · form4.xml · nonDerivative · entry 4 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,841 F1 · kind: Sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934. Read SEC document |
| October 01, 2016 Filed Oct 4, 2016 21:02 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
OtherRestricted Stock Unit · Derivative | 2,280 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001127602-16-064102 · form4.xml · derivative · entry 6 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,266 Underlying: Common Stock · 2,280 shares Expires 2017-10-01 F3 · kind: This represents the difference between the maximum possible number of shares that were eligible for vesting and the actual number that vested. F2 · derivative.exercise_date: The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout. One-third of these RSUs are eligible to vest on each of the first three anniversaries of the grant date. The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price on the grant date]). Read SEC document |
| October 01, 2016 Filed Oct 4, 2016 21:02 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
Exercise / conversionRestricted Stock Unit · Derivative | 1,982 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001127602-16-064102 · form4.xml · derivative · entry 5 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,546 Underlying: Common Stock · 1,982 shares Expires 2017-10-01 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout. One-third of these RSUs are eligible to vest on each of the first three anniversaries of the grant date. The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price on the grant date]). Read SEC document |
| October 01, 2016 Filed Oct 4, 2016 21:02 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
Tax withholdingCommon Stock | 933 | $313.03 | $292,056.99 |
DisclosureSEC source: 0001127602-16-064102 · form4.xml · nonDerivative · entry 3 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 8,221 Read SEC document |
| October 01, 2016 Filed Oct 4, 2016 21:02 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
Exercise / conversionCommon Stock | 1,982 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-16-064102 · form4.xml · nonDerivative · entry 2 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 9,154 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| October 01, 2016 Filed Oct 4, 2016 21:02 UTC |
Karaboutis AdrianaEVP, Tech, Bus. Sol & Corp Aff
|
Tax withholdingCommon Stock | 955 | $313.03 | $298,943.65 |
DisclosureSEC source: 0001127602-16-064102 · form4.xml · nonDerivative · entry 1 Karaboutis Adriana · CIK 0001619963 · EVP, Tech, Bus. Sol & Corp Aff 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 7,172 Read SEC document |
| September 22, 2016 Filed Sep 26, 2016 20:24 UTC |
DORSA CAROLINEDirector
|
Exercise / conversionStock Option (Right to Buy) · Derivative | 25,000 | $0.00 Strike: $53.64 | $0.00 |
DisclosureSEC source: 0001127602-16-063177 · form4.xml · derivative · entry 5 DORSA CAROLINE · CIK 0001181174 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 25,000 shares Expires 2020-01-03 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Exercise/sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934 F2 · derivative.exercise_date: The stock options become exercisable in three (3) equal annual installments commencing one year after the grant date of 01/04/2010. Read SEC document |
| September 22, 2016 Filed Sep 26, 2016 20:24 UTC |
DORSA CAROLINEDirector
|
Exercise / conversionStock Option (Right to Buy) · Derivative | 2,570 | $0.00 Strike: $53.64 | $0.00 |
DisclosureSEC source: 0001127602-16-063177 · form4.xml · derivative · entry 4 DORSA CAROLINE · CIK 0001181174 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,570 shares Expires 2020-01-03 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Exercise/sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934 Read SEC document |
| September 22, 2016 Filed Sep 26, 2016 20:24 UTC |
DORSA CAROLINEDirector
|
SaleCommon Stock | 27,570 | $314.00 | $8,656,980.00 |
DisclosureSEC source: 0001127602-16-063177 · form4.xml · nonDerivative · entry 3 DORSA CAROLINE · CIK 0001181174 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,093 F1 · kind: Exercise/sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934 Read SEC document |
| September 22, 2016 Filed Sep 26, 2016 20:24 UTC |
DORSA CAROLINEDirector
|
Exercise / conversionCommon Stock | 25,000 | $53.64 | $1,341,000.00 |
DisclosureSEC source: 0001127602-16-063177 · form4.xml · nonDerivative · entry 2 DORSA CAROLINE · CIK 0001181174 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 44,663 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Exercise/sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934 Read SEC document |
| September 22, 2016 Filed Sep 26, 2016 20:24 UTC |
DORSA CAROLINEDirector
|
Exercise / conversionCommon Stock | 2,570 | $53.64 | $137,854.80 |
DisclosureSEC source: 0001127602-16-063177 · form4.xml · nonDerivative · entry 1 DORSA CAROLINE · CIK 0001181174 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,663 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: Exercise/sale pursuant to a trading plan intended to comply with Rule 10b5-1 of the Securities Exchange Act of 1934 Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.