Daily feed · SEC Form 4 filings
Significant insider purchases — Jul 21, 2026
Open-market purchases of at least $50,000 — or at least $500,000 when the buyer is a 10% owner.
| Trade | Reported (ET) | Company | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jul 16, 2026 PForm 4 → | Jul 20, 5:30 pm EDT | CRESCENT BIOPHARMA, INC.CBIO | Fairmount Funds Management LLC +3Director, 10% Owner | 853,450 | $14.50 | $12,375,025 | 3,601,316 | +31.1% | |
| Jul 20, 2026 PForm 4 → | Jul 20, 6:31 pm EDT | ZeroStack Corp.ZSTK | Michael HeinrichExecutive Chairman, Director | 4,608,575 | $0.7549 | $3,479,013 | 4,608,575 | — | |
| Jul 16, 2026 PForm 4 → | Jul 20, 6:08 pm EDT | Artiva Biotherapeutics, Inc.ARTV | RA CAPITAL MANAGEMENT, L.P. +5Director, 10% Owner | 160,354 | $8.93 | $1,432,119 | 16,977,927 | +0.95% | |
| Jul 16, 2026 PForm 4 → | Jul 20, 9:10 pm EDT | Fulcrum Therapeutics, Inc.FULC | Kevin Tang +110% Owner | 167,616 | $3.55 | $594,675 | 7,080,945 | +2.42% | |
| Jul 17, 2026 PForm 4 → | Jul 21, 8:00 am EDT | ProQR Therapeutics N.V.PRQR | Bart FiliusDirector | 150,000 | $1.72 | $257,925 | 300,000 | +100% | |
| Jul 19, 2026 PForm 4 → | Jul 21, 6:44 am EDT | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTDTSM | Shyue-Shyh LinVP | 3,000 | $71.79 | $215,360 | 5,000 | +150% | |
| Jul 17, 2026 PForm 4 → | Jul 20, 4:20 pm EDT | BEXIL INVESTMENT TRUSTBXSY | WINMILL & CO. INCOther | 9,000 | $17.02 | $153,180 | 249,056 | +3.75% | |
| Jul 21, 2026 PForm 4 → | Jul 21, 11:49 am EDT | WILSON BANK HOLDING COno symbol | Herbert Elmer RichersonDirector | 1,798 | $83.45 | $150,043 | 83,337 | +2.21% |
A trading day runs to 4:00 pm ET; filings accepted later appear on the next trading day. Rows aggregate a filing’s matching transaction lines — see the methodology for the exact roll-up rules.