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Dubow Adam's Form 4 filing

Day One Biopharmaceuticals, Inc. (DAWN) · filed Feb 18, 2026

Accession no.
0001744507-26-000004
Filed
Feb 18, 2026
Trade date
Feb 15-17, 2026
Filing delay
3 days
Rule 10b5-1 plan
Not checked

This filing lists 6 non-derivative transactions and 5 derivative transactions. Open-market sales total $74.2K. It was filed 3 days after the trade.

Reporting owners

A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.

Reporting owners on this filing
OwnerRelationship to the company
Dubow AdamCIK 0001744507Officer (Gen Counsel & Secretary)

Non-derivative securities (Table I)

Acquisitions and disposals of common stock and similar shares, one row per line on the filing.

Non-derivative transactions
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Feb 15, 2026Common StockMOption exerciseAcquired+2,963––65,589Direct
Feb 15, 2026Common StockMOption exerciseAcquired+1,750––67,339Direct
Feb 15, 2026Common StockMOption exerciseAcquired+3,688––71,027Direct
Feb 15, 2026Common StockMOption exerciseAcquired+3,687––74,714Direct
Feb 15, 2026Common StockMOption exerciseAcquired+4,375––79,089Direct
Feb 17, 2026Common StockSSaleDisposed−6,395$11.60−$74,18272,694Direct

Derivative securities (Table II)

Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.

Derivative transactions
Trade dateSecurityTransactionUnderlying sharesUnit priceValueHeld afterOwnershipFlags
Feb 15, 2026Common StockMOption exerciseDisposed−2,963$0.00$08,889Direct
Feb 15, 2026Common StockMOption exerciseDisposed−1,750$0.00$05,250Direct
Feb 15, 2026Common StockMOption exerciseDisposed−3,688$0.00$025,816Direct
Feb 15, 2026Common StockMOption exerciseDisposed−3,687$0.00$040,565Direct
Feb 15, 2026Common StockMOption exerciseDisposed−4,375$0.00$065,625Direct

Footnotes

Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.

Read the original on SEC EDGAR (opens in a new tab)