Viehbacher Christopher

Director · Officer · BIIB

As of 2026-09-16, Viehbacher Christopher has 16 Form 4 transactions on record across 1 company — 12 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $8.2MIndirect: $0$8.2Mas of 2026-09-16
  • Direct $8.2M
  • Indirect $0
BIIBdirect38,015 sh$8.2M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

BIIB · 14 trades
2026-02-13: Award / grant, 38,015 sh ($0)2026-02-06: Withheld for tax, 6,624 sh ($1.3M)2026-02-06: Withheld for tax, 4,356 sh ($876K)2026-02-06: Option exercise, 9,008 sh ($0)2026-02-06: Option exercise, 9,008 sh ($0)2026-02-06: Option exercise, 15,453 sh ($0)2026-02-06: Option exercise, 15,453 sh ($0)2025-12-01: Withheld for tax, 3,404 sh ($605K)2025-12-01: Option exercise, 7,040 sh ($0)2025-12-01: Option exercise, 7,040 sh ($0)2025-02-07: Withheld for tax, 3,201 sh ($452K)2025-02-07: Option exercise, 9,008 sh ($0)2025-02-07: Option exercise, 9,008 sh ($0)2025-02-06: Award / grant, 46,360 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-07—Purchase83,333 @ $18.00$1.5M+15.8% of holding609,519Form 4
15 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-05—Award / grant30,00030,000Form 4
2026-02-13BIIBAward / grant38,01538,015Form 4
2026-02-06BIIBWithheld for tax6,62429,924Form 4
2026-02-06BIIBWithheld for tax4,35621,095Form 4
2026-02-06BIIBOption exercise9,0089,009Form 4
2026-02-06BIIBOption exercise9,00825,451Form 4
2026-02-06BIIBOption exercise15,45330,907Form 4
2026-02-06BIIBOption exercise15,45336,548Form 4
2025-12-01BIIBWithheld for tax3,40416,443Form 4
2025-12-01BIIBOption exercise7,04019,847Form 4
2025-12-01BIIBOption exercise7,0400Form 4
2025-02-07BIIBWithheld for tax3,20112,807Form 4
2025-02-07BIIBOption exercise9,00818,017Form 4
2025-02-07BIIBOption exercise9,00816,008Form 4
2025-02-06BIIBAward / grant46,36046,360Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.