BlackRock Portfolio Management LLC insider trades: York Space Systems (YSS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where BlackRock Portfolio Management LLC reports to the SEC
Open-market buys and sales
8 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 7, 2026 | YSS | ↓ Sell | 401,674 | $11.30 | $4.5M | Indirect | Aug 10, 2026 (3d) |
| Aug 5, 2026 | YSS | ↓ Sell | 674,604 | $15.15 | $10.2M | Indirect | Aug 10, 2026 (5d) |
| Aug 3, 2026 | YSS | ↓ Sell | 49,328 | $15.11 | $745K | Indirect | Aug 4, 2026 (1d) |
| Jan 30, 2026 | YSS | ↑ Buy | 752,500 | $34.00 | $25.6M | Indirect | Feb 3, 2026 (4d) |
| Sep 5, 2025 | MDIA | ↓ Sell | 214 | $1.32 | $282 | Indirect | Sep 8, 2025 (3d) |
| May 30, 2025 | HESM | ↓ Sell | 15,022,517 | $36.86 | $553.7M | Indirect | May 30, 2025 (0d) |
| Feb 19, 2025 | HESM | ↓ Sell | 1,650,000 | $39.11 | $64.5M | Indirect | Feb 19, 2025 (0d) |
| Feb 12, 2025 | HESM | ↓ Sell | 11,000,000 | $39.11 | $430.2M | Indirect | Feb 13, 2025 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other YSS insiders
Open-market trades in the last 12 months
About BlackRock Portfolio Management LLC's insider trades
BlackRock Portfolio Management LLC is a 10% owner of York Space Systems (YSS). Since Feb 12, 2025, it has reported 1 open-market purchase worth $25.6M and 7 sales worth $1.06B on SEC Form 4. In the last 12 months: 1 buy ($25.6M) and 3 sales ($15.5M).
Its filings also include other transactions (29 filings), conversions (5 filings), option exercises (1 filing), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every YSS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.