BlackRock Portfolio Management LLC sold $745K of YSS (indirect holdings)

BlackRock Portfolio Management LLC sold 49,328 indirectly-held shares of York Space Systems Inc. (YSS) at an average of $15.11 ($15.03–$15.14, $0.75M total) across 2 trades over 2026-07-31 to 2026-08-03.

Original reporting
SEC EDGAR · BlackRock Portfolio Management LLC
Published Aug 4, 2026, 4:00 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 6, 2026, 6:24 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
$YSS
Neutral
medium confidence
Mentioned
$YSS
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$YSSNeutralLow
01

Why it matters

The newest information is the disclosed open-market sale size, price range ($15.0300 to $15.1400), and the post-transaction share count (17,593,393).

02

Market read

A fresh Form 4 sale by a large holder can slightly affect sentiment, but the filing alone does not change fundamentals or provide a clear catalyst.

03

What to watch

Indirect holdings and the absence of a 10b5-1 plan do not clarify whether other affiliated entities increased exposure; traders should check for offsetting buys/sales in nearby filings.

Relevance 5/10Novelty 5/10Timing: filed 2026-08-04, covering sales from 2026-07-31 to 2026-08-03

Background

The article is a SEC Form 4 insider transaction disclosure for York Space Systems Inc. (YSS), reported by BlackRock Portfolio Management LLC as a 10% owner via indirect holdings.

Company-level read

Ticker impact

$YSSNeutralMedium confidence
Context

BlackRock Portfolio Management LLC filed a Form 4 showing it sold 49,328 YSS shares in open-market trades for about $745K, indirect holdings.

Expected impact

Likely limited near-term impact; any effect would be sentiment-driven and should be weighed against the small dollar size versus typical liquidity.

Evidence & confidence

The filing is a fresh disclosure, but it is a sale (not a buy), lacks a stated catalyst, and the article provides no follow-on fundamentals or guidance changes.

Market effects

No sector-level signal; this is company-specific ownership activity.

None indicated.

None indicated.

Counterpoint

The sale may be portfolio rebalancing or tax-related, especially since the filing does not provide any operational or financial rationale.

Key entities

  • York Space Systems Inc.

    Subject of the Form 4, with disclosed indirect holdings sale by a 10% owner.

  • BlackRock Portfolio Management LLC

    10% owner reporting an open-market sale of YSS shares via indirect holdings.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

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