York Space Systems Inc. (YSS) has 7 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 5 sales totalling $28.6M. Most recent filing: Aug. 10, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Aug. 10, 2026 filed Aug. 6, 2026 | BlackRock Portfolio Management LLC 10% Owner | −$4,537,315 | 401,674 | −2% | No | |
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| Aug. 10, 2026 filed Aug. 4, 2026 | BlackRock Portfolio Management LLC 10% Owner | −$10,220,261 | 674,604 | −4% | No | |
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| Aug. 6, 2026 filed Aug. 4, 2026 | BlackRock Portfolio Management LLC 10% Owner | −$10,024,095 | 661,999 | −4% | No | |
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| Aug. 4, 2026 filed July 31, 2026 | BlackRock Portfolio Management LLC 10% Owner | −$745,313 | 49,328 | −0% | No | |
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| July 31, 2026 filed July 29, 2026 | BlackRock Portfolio Management LLC 10% Owner | −$3,108,194 | 204,213 | −1% | No | |
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Showing the 5 most recent of 7 filings in the last 90 days.
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.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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