$IRON

Bitterman Kevin sold $4.4M of IRON (indirect holdings)

Bitterman Kevin sold 54,496 indirectly-held shares of Disc Medicine, Inc. (IRON) at an average of $80.15 ($79.95–$80.98, $4.37M total) across 12 trades over 2026-09-01 to 2026-09-03 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Bitterman Kevin
Published Sep 3, 2026, 4:00 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 4, 2026, 7:12 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
$IRON
Bearish
medium confidence
Mentioned
$IRON
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$IRONBearishMed
01

Why it matters

Insider sales are closely watched; a director's sale of $4.4M is notable for Disc Medicine.

02

Market read

The filing provides fresh, material information that could influence short‑term trading decisions on IRON.

03

What to watch

The director retains a non‑trivial stake (13,445 shares) and may still be aligned with company performance.

Relevance 5/10Novelty 8/10Timing: filed today (2026‑09‑03)

Background

SEC Form 4 filing discloses insider transactions for public companies.

Company-level read

Ticker impact

$IRONBearishMedium confidence
Context

Director Kevin Bitterman sold 54,496 shares for $4.37M via a 10b5‑1 plan, reducing his stake to 13,445 shares.

Expected impact

Potential modest downside pressure over the next few days.

Evidence & confidence

A $4.4M sale by a director is material for a mid‑cap biotech; the 10b5‑1 plan suggests pre‑planned execution, but the size relative to float can still affect sentiment.

Market effects

May raise concerns for other biotech stocks with recent insider sales.

Limited to U.S. biotech sector; no broader regional effect.

Low global relevance beyond Disc Medicine investors.

Counterpoint

The sale could be routine execution of a pre‑arranged plan, not a negative signal.

Key entities

  • Disc Medicine, Inc.

    Biotech firm listed on NASDAQ under ticker IRON.

  • Kevin Bitterman

    Director of Disc Medicine who executed the sale.

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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