$DNTH

Read Simon sold $327K of DNTH

Read Simon sold 2,778 shares of Dianthus Therapeutics, Inc. /DE/ (DNTH) at $117.55 ($0.33M total) on 2026-08-19 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Read Simon
Published Aug 19, 2026, 10:02 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 19, 2026, 10:07 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.
AlphAI market briefInsider activity
Primary signal
$DNTH
Neutral
high confidence
Mentioned
$DNTH
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$DNTHNeutralLow
01

Why it matters

The sale is routine and unlikely to move the stock, but repeated sales could erode confidence.

02

Market read

Low relevance; typical insider sell with modest dollar amount.

03

What to watch

Potential upcoming corporate actions or financing needs not disclosed.

Relevance 3/10Novelty 4/10Timing: 2026-08-19 filing date

Background

Form 4 filings disclose insider transactions; investors watch for trends in insider buying or selling.

Company-level read

Ticker impact

$DNTHNeutralHigh confidence
Context

Director Read Simon sold 2,778 shares for $326,554 via a 10b5-1 plan, reducing his holding to zero.

Expected impact

No significant move expected.

Evidence & confidence

Sale size is small relative to market cap and disclosed via Form 4, typical routine insider transaction.

Market effects

None; biotech sector unaffected by this isolated insider sale.

No regional impact.

Minimal.

Counterpoint

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

Key entities

  • Dianthus Therapeutics, Inc.

    Biotech firm developing therapies for rare diseases.

  • Read Simon

    Director of Dianthus Therapeutics.

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.

Related articles

$DNTHMedAI 8/10

Dianthus (DNTH) Piles Up Clinical Wins While Its Losses Widen

Dianthus Therapeutics (DNTH) reported Q2 2026 results, highlighting clinical trial progress. Claseprubart showed a 75% response rate in a Phase 3 trial for chronic inflammatory demyelinating polyneuropathy. The company also advanced trials for multifocal motor neuropathy and generalized myasthenia gravis. R&D costs rose to $48.7M, with a net loss of $50.2M. DNTH has $1.2B in cash, funding operations into 2030.

$DNTHMed

DIANTHUS THERAPEUTICS HIGHLIGHTS RECENT BUSINESS ACHIEVEMENTS AND REPORTS Q2 2026 FINANCIAL RESULTS

Dianthus Therapeutics, Inc. /DE/ (DNTH) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 DIANTHUS THERAPEUTICS HIGHLIGHTS RECENT BUSINESS ACHIEVEMENTS AND REPORTS Q2 2026 FINANCIAL RESULTS Advancing a neuromuscular franchise with claseprubart, a highly potent investigational classical pathway inhibitor, with best-in-disease potential across generalized M