DP
David J. Portman (10% owner) filed 1 Form 4 report in the trailing twelve months (1 purchase, 0 sales), most often in LeonaBio, Inc. (LONA). Data as of Nov 8 2026.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
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purchases not yet measured
Delay-adjustediThe same average, entered at disclosure dates
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returns measure stock purchases only
Filings, ttm
1
1 buys · 0 sells
Median delay
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measured on stock purchases
Volume, ttmiDollar value disclosed in the trailing twelve months
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no filings in the window
Last traded
Oct 26
Filed Oct 28
Median ADV $956K across their filed names
Open performance→Sectors filed on
Healthcare
1 filing
Sector per market data · by filing · past 12 months
Most traded names
LONARecent filings
LONAPURCHASE
LeonaBio, Inc.
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–3,149,470 sh · price not plausible
Exec Oct 26
Filed Oct 28 · 8:43 PM ET