Form 4: Yellowstone Midco Holdings II Insider Sells Shares
Insider Transaction (Form 4)
BlackRock Portfolio Management LLC reported changes in beneficial ownership of Yellowstone Midco Holdings II, LLC common stock on August 4, 2026.
Summary
- Open-market sale: disposed of 77,743 Common Stock at $15.02 ($1,167,700) on August 4, 2026; holds 17,515,650 after (Indirect).
- Open-market sale: disposed of 456,310 Common Stock at $15.58 ($7,109,310) on August 4, 2026; holds 17,059,340 after (Indirect).
- Open-market sale: disposed of 116,162 Common Stock at $13.49 ($1,567,025) on August 5, 2026; holds 16,943,178 after (Indirect).
- Open-market sale: disposed of 11,784 Common Stock at $15.28 ($180,060) on August 5, 2026; holds 16,931,394 after (Indirect).
Sentiment
Score: 2
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $10,024,095 of stock on the open market.
Insider Transactions
BlackRock Portfolio Management LLC — 10% owner
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-04 | Open-market sale | Common Stock | 77,743 | $15 | $1.2M | 17,515,650 |
| 2026-08-04 | Open-market sale | Common Stock | 456,310 | $16 | $7.1M | 17,059,340 |
| 2026-08-05 | Open-market sale | Common Stock | 116,162 | $13 | $1.6M | 16,943,178 |
| 2026-08-05 | Open-market sale | Common Stock | 11,784 | $15 | $180.1K | 16,931,394 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-04 | Open-market sale (77,743 shares) |
| 2026-08-04 | Open-market sale (456,310 shares) |
| 2026-08-05 | Open-market sale (116,162 shares) |
| 2026-08-05 | Open-market sale (11,784 shares) |
Keywords
insider transaction, Form 4, YSS, York Space Systems Inc., bearish, BlackRock Portfolio Management LLC
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