Freidin Aaron sold $383K of GRAL

Freidin Aaron (Chief Financial Officer) sold 4,100 shares of GRAIL, Inc. (GRAL) at an average of $93.34 ($92.26–$95.00, $0.38M total) across 3 trades on 2026-09-21 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Freidin Aaron
Published Sep 23, 2026, 8:37 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 23, 2026, 8:41 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
$GRAL
Neutral
medium confidence
Mentioned
$GRAL
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$GRALNeutralLow
01

Why it matters

The disclosed sale is modest and unlikely to affect GRAIL's valuation significantly.

02

Market read

Routine insider sale with limited trading relevance.

03

What to watch

Potential upcoming clinical data releases may outweigh the insider sale.

Relevance 3/10Novelty 4/10Timing: filing date 2026-09-23

Background

Form 4 filings disclose insider transactions; a 10b5‑1 plan indicates pre‑arranged sales.

Company-level read

Ticker impact

$GRALNeutralMedium confidence
Context

CFO Aaron Freidin sold 4,100 shares for $382.7K via a 10b5‑1 plan, reducing his stake to 248,983 shares.

Expected impact

Minor downward pressure; unlikely to move price materially.

Evidence & confidence

Sale amount is small for a mid‑cap biotech; market may view as routine execution of a pre‑arranged plan.

Market effects

Limited impact on the broader biotech sector; similar insider sales are common.

No regional effect; filing is U.S. SEC‑based.

Minimal global relevance.

Counterpoint

The sale could be a routine liquidity event, not a negative signal.

Key entities

  • GRAIL, Inc.

    Biotech firm developing early cancer detection tests.

  • Aaron Freidin

    Chief Financial Officer of GRAIL.

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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