Form4.ai tracks every SEC insider trade in real time. See every YSS insider filing with a free account — no card.
See every YSS insider filing — free account, no card.
Free accountYork Space Systems Inc. (YSS) has 2 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 2 sales totalling $14.8M. Most recent filing: Aug. 10, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Aug 10, 2026 SEC filing | BlackRock Portfolio Management LLC 10% Owner | Sold | $4,537,315 | — |
| Aug 10, 2026 SEC filing Amended: Corrected by the insider on Aug 10, 2026 · the original filing reported $10.0M | BlackRock Portfolio Management LLC 10% Owner | Sold | $10,220,261 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.