Susan Langer
CIK 1982640 · View on SEC EDGAR ↗
Insider
First SEC filing: June 28, 2023 · Latest: June 11, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 9, 2026 | BIIB | A | 1,505 | — | — | 6,634 Direct | +29.34% | Acquired | (price as of 2026-08-20) |
| June 17, 2025 | BIIB | A | 2,370 | — | — | 5,129 Direct | +85.90% | Acquired | (price as of 2026-08-20) |
| June 21, 2024 | BIIB | A | 1,340 | — | — | 2,759 Direct | +94.43% | Acquired | (price as of 2026-08-20) |
| June 26, 2023 | BIIB | A | 960 | — | — | 1,419 Direct | +209.15% | Acquired | (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| June 28, 2023 | BIIB | Common Stock | 459 | Direct |