Insider · CIK 0001864430
Lauren White
Files at IMGN (ImmunoGen, Inc.), SPTX (Seaport Therapeutics, Inc.). First filing -, latest -.
In brief
Lauren White files SEC Form 4 as CFO at IMGN (ImmunoGen, Inc.), and also at SPTX (Seaport Therapeutics, Inc.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Lauren White has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 7 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 4, 2026 | SPTX Seaport Therapeutics, Inc. | CConversion Common Stockindirect: By Lauren Anne White Living Trust, dated January 30, 2020 | +6,702 | - | - | 6,702 | May 4, 2026 |
| Apr 30, 2026 | SPTX Seaport Therapeutics, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +63,680 | $0.00 | $0 | 63,680 | May 4, 2026 |
| May 4, 2026 | SPTX Seaport Therapeutics, Inc. | CConversion Series B Preferred Stockderivativeindirect: By Lauren Anne White Living Trust, dated January 30, 2020 | -21,052 | $0.00 | $0 | 0 | May 4, 2026 |
| Feb 12, 2024 | IMGN ImmunoGen, Inc. | DDisposition to issuer Stock Option (Right to Buy)derivative | +295,975 | - | - | 0 | Feb 12, 2024 |
| Feb 12, 2024 | IMGN ImmunoGen, Inc. | DDisposition to issuer Restricted Stock Unitderivative | +51,625 | - | - | 0 | Feb 12, 2024 |
| Feb 12, 2024 | IMGN ImmunoGen, Inc. | DDisposition to issuer Restricted Stock Unitderivative | +19,519 | - | - | 0 | Feb 12, 2024 |
| Feb 1, 2024 | IMGN ImmunoGen, Inc. | AGrant or award Restricted Stock Unitderivative | +19,519 | $0.00 | $0 | 19,519 | Feb 5, 2024 |
Questions about Lauren White
Answered from the filings on this page, as of the latest one.
Is Lauren White buying or selling?
Lauren White has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Lauren White's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Lauren White has 0.
Where does Lauren White file Form 4?
Lauren White has filed Form 4 at IMGN (ImmunoGen, Inc.) as SVP, CFO AND PFO; SPTX (Seaport Therapeutics, Inc.) as Chief Financial Officer. 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.