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SEC EDGAR$UPB

Houghton Adam sold $4K of UPB

Houghton Adam (Chief Business Officer) sold 700 shares of Upstream Bio, Inc. (UPB) at $5.49 on 2026-09-16.

Original reporting
SEC EDGAR · Houghton Adam
Published Sep 17, 2026, 8:05 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 17, 2026, 9:09 PM 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.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$UPB
Neutral
high confidence
Mentioned
$UPB
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$UPBNeutralLow
01

Why it matters

The sale is modest and does not suggest a shift in company fundamentals.

02

Market read

Routine insider transaction with limited trading relevance.

03

What to watch

Potential upcoming financing or strategic moves not disclosed.

Relevance 3/10Novelty 4/10Timing: post‑market 2026‑09‑16

Background

Form 4 filings disclose insider trades; investors watch for material changes in insider holdings.

Company-level read

Ticker impact

$UPBNeutralHigh confidence
Context

Chief Business Officer sold 700 shares for $3,843, reducing his stake to 22,901 shares.

Expected impact

No significant impact expected.

Evidence & confidence

Sale size is small relative to float and disclosed via Form 4, a routine transaction.

Market effects

Sector

None; transaction is company‑specific.

Regional

None; Upstream Bio trades on US markets only.

Global

None

Counterpoint

What could challenge this read

Even small insider sales can signal concerns; monitor for further disposals.

Key entities

  • Officer
    Houghton Adam

    Chief Business Officer of Upstream Bio, Inc.

Read at source← All news

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.

UPB insider trading history →

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