York Space Systems Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for York Space Systems Inc. (YSS), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are YSS insiders buying or selling?
In the last 12 months, York Space Systems Inc. insiders reported 3 open-market purchases ($25.7M) and 5 sales ($28.6M) — net selling of $2.9M. Since February 2026, Trabud has recorded 8 Form 4 filings for YSS: 3 buys ($25.7M) and 5 sells ($28.6M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $25.6M by BlackRock Portfolio Management LLC (10% Owner) on Feb 3, 2026. SEC ↗
- The most recent open-market purchase was reported on Feb 4, 2026 (8 months ago).
Key Statistics (February 2026 – Aug 10, 2026)
Total Form 4 filings
8
SEC EDGAR
Insider filers
3
Insider buys (3)
$25.7M
Insider sells (5)
$28.6M
Insider sentiment
Net sellingNet insider flow of $2.9M in net selling since February 2026, and $2.9M in net selling over the last 12 months.
Recent YSS insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Aug 10, 2026 | BlackRock Portfolio Management LLC | 10% Owner | Sale | 401.7K | $11.30 | $4.5M | SEC ↗ |
| Aug 10, 2026 | BlackRock Portfolio Management LLC | 10% Owner | Sale | 674.6K | $15.15 | $10.2M | SEC ↗ |
| Aug 6, 2026 | BlackRock Portfolio Management LLC | 10% Owner | Sale | 662.0K | $15.14 | $10.0M | SEC ↗ |
| Aug 4, 2026 | BlackRock Portfolio Management LLC | 10% Owner | Sale | 49.3K | $15.11 | $745.3K | SEC ↗ |
| Jul 31, 2026 | BlackRock Portfolio Management LLC | 10% Owner | Sale | 204.2K | $15.22 | $3.1M | SEC ↗ |
| Feb 4, 2026 | Tami A. Erwin | Director | Purchase | 2.9K | $34.00 | $100.0K | SEC ↗ |
| Feb 4, 2026 | Tyler Letarte | Director | Purchase | 1.5K | $34.00 | $50.0K | SEC ↗ |
| Feb 3, 2026 | BlackRock Portfolio Management LLC | 10% Owner | Purchase | 752.5K | $34.00 | $25.6M | SEC ↗ |
Showing the 8 most recent of 8 Form 4 filings for York Space Systems Inc..
Most active YSS insiders
- BlackRock Portfolio Management LLC6 filings
- Tami A. Erwin1 filing
- Tyler Letarte1 filing
Ask anything about YSS insider activity
Use Trabud's AI agent to query York Space Systems Inc.'s Form 4 history in plain English — "Show me YSS CEO purchases this year" or compare it against any other ticker.
Open the AI agentYSS insider trading FAQ
Are York Space Systems Inc. insiders buying or selling?
In the last 12 months, York Space Systems Inc. insiders reported 3 open-market purchases ($25.7M) and 5 sales ($28.6M) — net selling of $2.9M. Since February 2026, Trabud has recorded 8 Form 4 filings for YSS: 3 buys ($25.7M) and 5 sells ($28.6M). Over the full record that is net selling of $2.9M.
How many insiders trade YSS stock?
3 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for York Space Systems Inc.. The most recent filing was accepted on Aug 10, 2026.
Where does Trabud get YSS insider trading data?
All YSS insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.