$KRRO

FORMELA JEAN FRANCOIS sold $686K of KRRO (indirect holdings)

FORMELA JEAN FRANCOIS sold 48,690 indirectly-held shares of Korro Bio, Inc. (KRRO) at an average of $14.09 ($13.99–$14.12, $0.69M total) across 4 trades over 2026-09-11 to 2026-09-14 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · FORMELA JEAN FRANCOIS
Published Sep 15, 2026, 8:15 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 15, 2026, 8:18 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
$KRRO
Neutral
medium confidence
Mentioned
$KRRO
Relevance
4/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$KRRONeutralLow
01

Why it matters

The disclosed sale is modest and pre‑arranged, offering limited trading edge.

02

Market read

Insider transaction provides a low‑impact data point for traders monitoring KRRO.

03

What to watch

Pre‑arranged 10b5‑1 plan may mask timing motives; monitor future filings.

Relevance 4/10Novelty 5/10Timing: filed today

Background

Form 4 filing by director of Korro Bio, a Nasdaq‑listed biotech.

Company-level read

Ticker impact

$KRRONeutralMedium confidence
Context

Director Form 4 disclosed sale of 48,690 shares worth $686K via 10b5-1 plan.

Expected impact

Potential slight downward pressure, unlikely to move price materially.

Evidence & confidence

Sale amount under $1M and pre‑arranged plan limit actionable insight.

Market effects

Minimal impact on biotech sector; typical insider transaction.

No regional effect.

None

Counterpoint

Insider sale could be routine liquidity need, not a negative signal.

Key entities

  • Korro Bio, Inc.

    Biotech firm listed on Nasdaq under ticker KRRO.

  • FORMELA JEAN FRANCOIS

    Director of Korro Bio who sold shares.

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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