16 insiders reported 39 Form 4 transactions for York Space Systems Inc. (YSS) over the past 18 months (most recent 2026-08-10). Recent activity: BlackRock Portfolio Management LLC (10% Owner) Sell 78,082 shares, BlackRock Portfolio Management LLC (10% Owner) Sell 201,504 shares, BlackRock Portfolio Management LLC (10% Owner) Sell 468,476 shares, BlackRock Portfolio Management LLC (10% Owner) Sell 200,170 shares, BlackRock Portfolio Management LLC (10% Owner) Sell 116,162 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-10 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 78,082 | $1.2M |
| 2026-08-10 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 201,504 | $2.3M |
| 2026-08-10 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 468,476 | $7.3M |
| 2026-08-10 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 200,170 | $2.2M |
| 2026-08-10 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 116,162 | $1.6M |
| 2026-08-10 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 11,884 | $181,588 |
| 2026-08-06 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 77,743 | $1.2M |
| 2026-08-06 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 456,310 | $7.1M |
| 2026-08-06 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 116,162 | $1.6M |
| 2026-08-06 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 11,784 | $180,060 |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 35,574 | $538,590 |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 13,754 | $206,723 |
| 2026-07-31 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 63,390 | $970,501 |
| 2026-07-31 | BlackRock Portfolio Management LLC | 10% Owner | Sell | 140,823 | $2.1M |
| 2026-07-10 | AEROEQUITY GP, LLC | 10% Owner | Buy | 2.3M | $77.8M |
| 2026-07-10 | ROWE DAVID H. | 10% Owner | Buy | 2.3M | $77.8M |
| 2026-07-10 | GREENE MICHAEL ROBERT | 10% Owner | Buy | 2.3M | $77.8M |
| 2026-06-29 | ROWE DAVID H. | 10% Owner | Buy | 430,134 | $14.6M |
| 2026-06-29 | AEROEQUITY GP, LLC | 10% Owner | Buy | 430,134 | $14.6M |
| 2026-06-29 | GREENE MICHAEL ROBERT | 10% Owner | Buy | 430,134 | $14.6M |
| 2026-06-05 | ROWE DAVID H. | 10% Owner | Buy | 287,789 | $9.8M |
| 2026-06-05 | AEROEQUITY GP, LLC | 10% Owner | Buy | 287,789 | $9.8M |
| 2026-06-05 | GREENE MICHAEL ROBERT | 10% Owner | Buy | 287,789 | $9.8M |
| 2026-04-14 | Davidson Janine | Director | Buy | 4,381 | $0 |
| 2026-03-11 | Wallinger Dirk | Chief Executive Officer | Buy | 211,176 | $0 |
Source: SEC Form 4 filings · as of 2026-08-10