Company profile
York Space Systems Inc. Insider Trading
YSSEvery SEC Form 4 insider trading filing for York Space Systems Inc. (YSS) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- NYSE
- Sector
- Guided Missiles & Space Vehicles & Parts
- CIK
- 0002086587
- Filings
- 22
- Insiders
- 16
- Last filing
- 2026-08-07
Activity summary
No insider transactions in the last 30 days. The most recent was on August 7, 2026, when BlackRock Portfolio Management LLC sold 200,170 shares. 22 filings from 16 insiders are on record below.
Quarterly balance
Buy and sell value by quarter, Q1 26 to Q3 26. York Space Systems Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $77.8M.
90 day insight
Over the last 90 days, York Space Systems Inc. insiders bought $77.8M (1 transaction) and sold $18.6M (10 transactions).
- Most active insider: BlackRock Portfolio Management LLC with 10 transactions totaling $18.6M.
- Largest single purchase: $77.8M by AEROEQUITY GP, LLC on Jul 8, 2026.
Activity skews bearish — sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 7, 2026 | BlackRock Portfolio Management LLC | YSS | Sale | 200,170 | $10.99 | $2.20M |
| Aug 6, 2026 | BlackRock Portfolio Management LLC | YSS | Sale | 201,504 | $11.60 | $2.34M |
| Aug 5, 2026 | BlackRock Portfolio Management LLC | YSS | Sale | 11,884 | $15.28 | $182K |
| Aug 5, 2026 | BlackRock Portfolio Management LLC | YSS | Sale | 116,162 | $13.49 | $1.57M |
| Aug 4, 2026 | BlackRock Portfolio Management LLC | YSS | Sale | 78,082 | $15.02 | $1.17M |
22 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of York Space Systems Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →