York Space Systems Inc.
YSS- Exchange
- NYSE
- Industry
- Guided Missiles & Space Vehicles & Parts
- SEC CIK
- 0002086587
In the last 90 days, York Space Systems Inc. insiders filed 0 open-market purchases and 4 sales; 162 institutions reported holding it in 13F filings for Q2 2026, worth $1.60B in total; Soros Fund Management is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by York Space Systems Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 4 filings
- 1 insider, $18.6M in total
- Insiders trading
- 1
- Net value
- −$18.6M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for York Space Systems Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| BlackRock Portfolio Management LLC | 10% Owner | 16,517,115Indirect | Aug 10, 2026 | 5 |
| Rowe David H. | 10% Owner | 32,915,588Indirect | Jul 10, 2026 | 2 |
| Aeroequity GP, LLC | 10% Owner | 32,915,588Indirect | Jul 10, 2026 | 2 |
| Greene Michael Robert | 10% Owner | 32,915,588Indirect | Jul 10, 2026 | 2 |
| Davidson Janine | Director | 4,381 | Apr 14, 2026 | 1 |
| Wallinger Dirk | Chief Executive Officer | 9,783,222 | Mar 11, 2026 | 1 |
| Frantz Brian D | Chief Accounting Officer | 16,000 | Feb 3, 2026 | 1 |
| Erwin Tami A. | Director | 79,984 | Feb 3, 2026 | 1 |
| Konert Kirk Michael | Director | 5,294 | Feb 3, 2026 | 1 |
| Brothers Louis R Jr | Director | 5,294 | Feb 3, 2026 | 1 |
| McConville James | Director | 5,294 | Feb 3, 2026 | 1 |
| Messerle Kevin | Chief Financial Officer | 80,882 | Feb 3, 2026 | 1 |
| Palko Monica J. | See Remarks | 54,412 | Feb 3, 2026 | 1 |
| Rudra Devjyoti | Chief Supply Chain Officer | 358,357 | Feb 3, 2026 | 1 |
| Letarte Tyler | Director | 1,470Indirect | Feb 3, 2026 | 1 |
| Boyd Andrew | Director | 5,294 | Feb 3, 2026 | 1 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 10, 2026 (view filing)6:16 PM ET | Aug 6-7 | 4 days | BlackRock Portfolio Management LLC10% Owner | SSale | −401.7K | $11.30 | −$4.54M | −2.4%16.5M after | 2 lots |
| Aug 10, 2026 (view filing)6:02 PM ET | Aug 4-5 | 6 days | BlackRock Portfolio Management LLC10% Owner | SSale | −674.6K | $15.15 | −$10.2M | −3.8%16.9M after | Amended4 lots |
| Aug 4, 2026 (view filing)4:17 PM ET | Jul 31-Aug 3 | 4 days | BlackRock Portfolio Management LLC10% Owner | SSale | −49.3K | $15.11 | −$745.3K | −0.3%17.6M after | 2 lots |
| Jul 31, 2026 (view filing)4:47 PM ET | Jul 29-30 | 2 days | BlackRock Portfolio Management LLC10% Owner | SSale | −204.2K | $15.22 | −$3.11M | −1.1%17.6M after | 2 lots |
| Feb 3, 2026 (view filing) | Jan 30 | 4 days | Erwin Tami A.Director | PPurchase | +2.94K | $34.00 | +$100.0K | +3.8%80.0K after | |
| Feb 3, 2026 (view filing) | Jan 30 | 4 days | Letarte TylerDirector | PPurchase | +1.47K | $34.00 | +$50.0K | New position1.47K after | |
| Feb 3, 2026 (view filing) | Jan 30 | 4 days | BlackRock Portfolio Management LLC10% Owner | PPurchase | +752.5K | $34.00 | +$25.6M | +4.4%17.8M after |