Insider · CIK 0001181174
Caroline Dorsa
Files at BIIB (BIOGEN INC.), ILMN (ILLUMINA, INC.), DUK (Duke Energy CORP). First filing May 5, 2025, latest May 5, 2025.
In brief
Caroline Dorsa files SEC Form 4 as director at BIIB (BIOGEN INC.), and also at ILMN (ILLUMINA, INC.), DUK (Duke Energy CORP). Since May 5, 2025, Caroline Dorsa has reported 1 open-market buy worth $152k and 0 open-market sells worth $0, the latest filed on May 5, 2025.
A track record needs three past buys with six months of prices behind them; Caroline Dorsa has 0, so none is measured yet.
The newest scored trade: bought $152k of BIIB on May 2, 2025, filed May 5, 2025, scored 44 (moderate).
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
BIIB: BIOGEN INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 44Moderate | BIIBbuy BIOGEN INC. | $152k 1,235 shares | +5% | +9% from low-39% from high |
Transactions
Every row this insider has filed, 12 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 20, 2026 | ILMN ILLUMINA, INC. | FTax withholding Common Stock | -1,512 | $141.92 | $215k | 13,682 | May 22, 2026 |
| May 21, 2026 | ILMN ILLUMINA, INC. | AGrant or award Common Stock | +2,072 | $144.83 | $300k | 15,754 | May 22, 2026 |
| May 7, 2026 | DUK Duke Energy CORP | AGrant or award Common Stock | +1,602 | $124.87 | $200k | 12,723 | May 11, 2026 |
| Jun 17, 2025 | BIIB BIOGEN INC. | AGrant or award Common Stock | +3,160 | $0.00 | $0 | 31,002 | Jun 18, 2025 |
| May 21, 2025 | ILMN ILLUMINA, INC. | AGrant or award Common Stock | +3,780 | $0.00 | $0 | 15,194 | May 23, 2025 |
| May 16, 2025 | ILMN ILLUMINA, INC. | FTax withholding Common Stock | -1,070 | $83.62 | $89k | 11,414 | May 20, 2025 |
| May 2, 2025 | BIIB BIOGEN INC. | POpen-market purchase Common Stock | +1,235 | $122.72 | $152k | 27,842 | May 5, 2025 |
| May 1, 2025 | DUK Duke Energy CORP | AGrant or award Common Stock | +1,607 | $121.33 | $195k | 11,121 | May 5, 2025 |
| Jun 21, 2024 | BIIB BIOGEN INC. | AGrant or award Common Stock | +1,785 | $0.00 | $0 | 26,607 | Jun 25, 2024 |
| May 15, 2024 | ILMN ILLUMINA, INC. | FTax withholding Common Stock | -612 | $115.01 | $70k | 9,809 | May 17, 2024 |
| May 16, 2024 | ILMN ILLUMINA, INC. | AGrant or award Common Stock | +2,622 | $0.00 | $0 | 12,431 | May 17, 2024 |
| May 9, 2024 | DUK Duke Energy CORP | AGrant or award Common Stock | +1,699 | $103.02 | $175k | 9,514 | May 13, 2024 |
Questions about Caroline Dorsa
Answered from the filings on this page, as of the latest one.
Is Caroline Dorsa buying or selling?
Not in the last 12 months. Caroline Dorsa's latest open-market trade on SEC Form 4 was bought $152k of BIIB on May 2, 2025.
How did Caroline Dorsa's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Caroline Dorsa has 0.
Where does Caroline Dorsa file Form 4?
Caroline Dorsa has filed Form 4 at BIIB (BIOGEN INC.); ILMN (ILLUMINA, INC.); DUK (Duke Energy CORP). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.