Kramer Robin

Director · Officer · ARMP, BIIB

As of 2026-09-16, Kramer Robin has 25 Form 4 transactions on record across 2 companies — 11 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: $1.9MIndirect: $0$1.9Mas of 2026-09-16
  • Direct $1.9M
  • Indirect $0
BIIBdirect8,450 sh$1.8M
ARMPdirect25,640 sh$104K

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 · 23 trades
2026-02-13: Award / grant, 8,450 sh ($0)2026-02-06: Withheld for tax, 1,063 sh ($214K)2026-02-06: Withheld for tax, 273 sh ($55K)2026-02-06: Withheld for tax, 207 sh ($42K)2026-02-06: Option exercise, 789 sh ($0)2026-02-06: Option exercise, 3,511 sh ($0)2026-02-06: Option exercise, 703 sh ($0)2026-02-06: Option exercise, 3,511 sh ($0)2026-02-06: Option exercise, 703 sh ($0)2026-02-06: Option exercise, 789 sh ($0)2025-02-10: Withheld for tax, 245 sh ($35K)2025-02-10: Option exercise, 834 sh ($0)2025-02-10: Option exercise, 834 sh ($0)2025-02-07: Withheld for tax, 244 sh ($34K)2025-02-07: Withheld for tax, 232 sh ($33K)2025-02-07: Option exercise, 788 sh ($0)2025-02-07: Option exercise, 703 sh ($0)2025-02-07: Option exercise, 788 sh ($0)2025-02-07: Option exercise, 703 sh ($0)2025-02-06: Award / grant, 10,535 sh ($0)2024-12-06: Withheld for tax, 170 sh ($27K)2024-12-06: Option exercise, 351 sh ($0)2024-12-06: Option exercise, 351 sh ($0)
ARMP · 2 trades
2026-03-09: Award / grant, 25,640 sh ($0)2025-02-05: Award / grant, 54,343 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
25 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-09ARMPAward / grant25,64025,640Form 4
2026-02-13BIIBAward / grant8,4508,450Form 4
2026-02-06BIIBWithheld for tax1,06311,472Form 4
2026-02-06BIIBWithheld for tax2738,528Form 4
2026-02-06BIIBWithheld for tax2079,024Form 4
2026-02-06BIIBOption exercise7890Form 4
2026-02-06BIIBOption exercise3,5117,024Form 4
2026-02-06BIIBOption exercise703704Form 4
2026-02-06BIIBOption exercise3,51112,535Form 4
2026-02-06BIIBOption exercise7039,231Form 4
2026-02-06BIIBOption exercise7898,801Form 4
2025-02-10BIIBWithheld for tax2458,012Form 4
2025-02-10BIIBOption exercise8348,257Form 4
2025-02-10BIIBOption exercise8340Form 4
2025-02-07BIIBWithheld for tax2447,423Form 4
2025-02-07BIIBWithheld for tax2326,964Form 4
2025-02-07BIIBOption exercise788789Form 4
2025-02-07BIIBOption exercise7031,407Form 4
2025-02-07BIIBOption exercise7887,196Form 4
2025-02-07BIIBOption exercise7037,667Form 4
2025-02-06BIIBAward / grant10,53510,535Form 4
2025-02-05ARMPAward / grant54,34354,343Form 4
2024-12-06BIIBWithheld for tax1706,408Form 4
2024-12-06BIIBOption exercise3510Form 4
2024-12-06BIIBOption exercise3516,578Form 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.