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Who

Christopher Viehbacher

Director

Company insider

Files Form 4 as: Director, Braveheart Bio; President and CEO, Biogen.

In numbers

Trades disclosed
29
Buys
1
Sells
0
Bought
$3.0M
Sold
$0
Companies
2
Companies where not an officer
1
First trade
1 Dec 2022
Last trade
7 Aug 2026
Last filed
7 Aug 2026

Companies traded

Where they are an officer
BIIB BiogenDirector, Officer · Biotechnology · last 13 Feb 20260 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
BRVE Braveheart BioDirector · Biotechnology · last 7 Aug 20261 buy · 0 sells

Activity over time

1 Aug – 1 Oct
011 Aug1 Sep1 Oct

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
7 Aug 2026filed 7 Aug 2026BRVE Braveheart BioBiotechnologySEC FORM 4 Bought$1.5M83,333 at $18.00filing
7 Aug 2026filed 7 Aug 2026BRVE Braveheart BioBiotechnologySEC FORM 4 Bought$1.5M83,333 at $18.00filing
5 Aug 2026filed 7 Aug 2026BRVE Braveheart Biooption or derivative · BiotechnologySEC FORM 4 Code A—30,000 at $0.00filing
5 Aug 2026filed 7 Aug 2026BRVE Braveheart Biooption or derivative · BiotechnologySEC FORM 4 Code A—30,000 at $0.00filing
13 Feb 2026filed 17 Feb 2026BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code A—38,015 at $0.00filing
13 Feb 2026filed 17 Feb 2026BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code A—38,015 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code M—9,008 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code F$876K4,356 at $201.18filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code M—15,453 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code M—9,008 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code M—15,453 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code F$1.3M6,624 at $201.18filing
6 Feb 2026filed 10 Feb 2026BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code M—9,008 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code M—15,453 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code M—9,008 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code F$876K4,356 at $201.18filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code M—15,453 at $0.00filing
6 Feb 2026filed 10 Feb 2026BIIB BiogenBiotechnologySEC FORM 4 Code F$1.3M6,624 at $201.18filing
1 Dec 2025filed 3 Dec 2025BIIB Biogenoption or derivative · BiotechnologySEC FORM 4 Code M—7,040 at $0.00filing
1 Dec 2025filed 3 Dec 2025BIIB BiogenBiotechnologySEC FORM 4 Code M—7,040 at $0.00filing

News

Braveheart Bio (NASDAQ:BRVE) Stock Price Down 7.6% – Here's WhyBRVE · dailypolitical.com · 6 Oct 2026

0 headlines in the last 90 days name Christopher Viehbacher; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care1

Buys in green, sells in red, by the company’s sector.

Related people

Sean GodboutChief Accounting Officer · Chief Accounting Officer at Biogen, filing Form 4 there in the last year
Michael PariniChief Legal Officer · Chief Legal Officer at Biogen, filing Form 4 there in the last year
Lloyd MinorDirector · Director at Biogen, filing Form 4 there in the last year
Maria C. FreireDirector · Director at Biogen, filing Form 4 there in the last year
Jesus B. MantasDirector · Director at Biogen, filing Form 4 there in the last year
AH Bio Fund IV, L.P.10% owner · Also traded BRVE in the last 90 days
David Charles LubnerDirector · Also traded BRVE in the last 90 days
David I. MalekDirector · Also traded BRVE in the last 90 days