Form4insider filings, from the source

Company · CIK 0001650648 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

4D Molecular Therapeutics, Inc. · FDMT

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $841k · 3net −$841k
$10k$10k$100k$100k$1M$1MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 17Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 SForm 4 →Sep 22, 6:43 pm EDTScott BizilyChief Legal Officer1,635$13.65$22,3188,617−15.9%10b5-1 late
Sep 16, 2026 MForm 4 →Sep 22, 6:43 pm EDTScott BizilyChief Legal Officer1,635$4.14$6,76910,252—10b5-1 late
Sep 14, 2026 SForm 4 →Sep 16, 5:13 pm EDTDavid KirnSee Remarks, Director58,333$13.90$811,004767,486−7.06%10b5-1
Sep 1, 2026 SForm 4 →Sep 3, 6:55 pm EDTScott BizilyChief Legal Officer584$14.00$8,1768,617−6.35%10b5-1
Sep 1, 2026 MForm 4 →Sep 3, 6:55 pm EDTScott BizilyChief Legal Officer584$6.49$3,7909,201—10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 MForm 4 →Sep 22, 6:43 pm EDTScott BizilyChief Legal Officer1,635——58,066—10b5-1 late
Sep 1, 2026 MForm 4 →Sep 3, 6:55 pm EDTScott BizilyChief Legal Officer584——2,959—10b5-1