York Space Systems (YSS) BlackRock Portfolio Management Sells 662k Shares

What Happened

• BlackRock Portfolio Management LLC (reported as a 10% owner) sold a total of 661,999 shares of York Space Systems (YSS) in open-market transactions on August 4–5, 2026, receiving approximately $10,024,095 in proceeds (about $10.02M). All transactions are reported as sales (transaction code "S").
• Trade-by-trade breakdown:
  • 2026-08-04: 77,743 shares at a weighted avg $15.02 — $1,167,700
  • 2026-08-04: 456,310 shares at a weighted avg $15.58 — $7,109,310
  • 2026-08-05: 116,162 shares at $13.49 — $1,567,025
  • 2026-08-05: 11,784 shares at $15.28 — $180,060
• This filing documents sales (liquidations) by an institutional holder. Sales are often routine portfolio management actions and do not necessarily indicate insider sentiment.

Key Details

• Transaction dates: August 4 and August 5, 2026. Filing date: August 6, 2026 (filed within the usual 2-business-day window).
• Reported total shares sold: 661,999; total proceeds: $10,024,095 (~$10.02M).
• Price notes / footnotes: several prices are reported as weighted averages; the filing discloses that some blocks were sold across price ranges (e.g., $14.28–$15.27, $15.28–$16.00, $15.00–$15.31). The reporting person will provide per-price breakdown on request as noted in the footnotes.
• Shares owned after the transactions: not specified in the summary information provided here (check the full Form 4 for "Amount Owned Following Reported Transaction" if needed).
• Institutional reporting and disclaimers: the sales reflect shares held across multiple funds and accounts managed by BlackRock entities (see footnotes). The filing includes standard disclaimers that managers and advised funds disclaim beneficial ownership except to the extent of pecuniary interest.

Context

• This is institutional (BlackRock) selling, not an executive/director sale — different regulatory and signaling implications than insider executive trades.
• For retail investors: purchases by insiders can be more informative as bullish signals; large institutional rebalancings or fund redemptions often drive sizeable sales. The Form 4 footnotes and full filing can be consulted for exact per-trade price details and the specific funds/accounts involved.