Christopher Viehbacher

CEO · BIOGEN INC.

Rank #9,984 SEC EDGAR (United States) ↗ Files from United States

Details

Officer and board memberPharmaceuticals & BiotechnologyBIIBSEC CIK 0001774478

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$6.6M
1-day change
▼ 1.64%
Positions on file
1
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 1 currently disclosed position would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$4.1M – $6.6M2026-09-04

Insider activity Feb 7, 2025 – Feb 6, 2026

Christopher Viehbacher is recorded in filings to the U.S. SEC via EDGAR as officer and board member, and reported 8 transactions between Feb 7, 2025 and Feb 6, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
None
0 purchases on file
Open-market sales (code S)
None
0 sales on file
All reported transactions
8
every code, including awards and exercises
Pattern
Awards and exercises only — no open-market trade on file
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

4 insiders bought Braveheart Bio, Inc. (BRVE) shares worth $76,019,994 on Aug 7, 2026

Cluster buying

4 different insiders made 5 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

4 insiders bought Braveheart Bio, Inc. (BRVE) shares worth $76,019,994 on Aug 7, 2026
Date Insider Transaction Shares Price Value Filing
Aug 7, 2026 Christopher Viehbacher P Open-market purchase 83,333 held after: 609,519 $18.00 $1,499,994 SEC filing ↗
Aug 7, 2026 Erez Chimovits P Open-market purchase 1,666,667 held after: 11,901,826 $18.00 $30,000,006 SEC filing ↗
Aug 7, 2026 Erez Chimovits P Open-market purchase 273,333 held after: 273,333 $18.00 $4,919,994 SEC filing ↗
Aug 7, 2026 Marc L Andreessen P Open-market purchase 1,100,000 held after: 10,232,420 $18.00 $19,800,000 SEC filing ↗
Aug 7, 2026 Benjamin A. Horowitz P Open-market purchase 1,100,000 held after: 10,232,420 $18.00 $19,800,000 SEC filing ↗

Total of the rows above: $76,019,994, in the currency the filings report.

Summary written by an AI model from the filing data above (model: gemini-3.6-flash):

On 2026-08-07, 4 actors executed open-market purchase transactions for a total of 4,223,333 shares of Braveheart Bio, Inc. totaling $76,019,994.

Across 5 trades, all shares were bought at $18.00 per share. The transactions included purchases of 83,333 shares for $1,499,994, 1,666,667 shares for $30,000,006, 273,333 shares for $4,919,994, 1,100,000 shares for $19,800,000, and 1,100,000 shares for $19,800,000.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 9 most recent rows are grouped into 7 lines by date, company and transaction type — open a line to see every lot with its own source link.

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. Braveheart Bio, Inc. BRVE P Open-market purchase 83,333 shares $1.50M at $18.00 SEC filing ↗
  2. BIOGEN INC. BIIB F Shares withheld for taxes × 2not a buy/sell decision 10,980 shares $2.21M
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    4,356 $201.18 $876.3K SEC filing ↗
    6,624 $201.18 $1.33M SEC filing ↗
  3. BIOGEN INC. BIIB M Option exercise or conversion × 2not a buy/sell decisionreported at zero 24,461 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    15,453 $0.00reported at zero $0 SEC filing ↗
    9,008 $0.00reported at zero $0 SEC filing ↗
  4. BIOGEN INC. BIIB F Shares withheld for taxesnot a buy/sell decision 3,404 shares $605.2K at $177.78 SEC filing ↗
  5. BIOGEN INC. BIIB M Option exercise or conversionnot a buy/sell decisionreported at zero 7,040 shares $0 at $0.00 SEC filing ↗
  6. BIOGEN INC. BIIB M Option exercise or conversionnot a buy/sell decisionreported at zero 9,008 shares $0 at $0.00 SEC filing ↗
  7. BIOGEN INC. BIIB F Shares withheld for taxesnot a buy/sell decision 3,201 shares $452.5K at $141.35 SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
BIOGEN INC. BIIB Common Stock 29,924 $220.83 $6.6M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Christopher Viehbacher reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.