$VSTM

Calkins Daniel sold $21K of VSTM

Calkins Daniel (Chief Financial Officer) sold 2,566 shares of Verastem, Inc. (VSTM) at $8.00 on 2026-10-01 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Calkins Daniel
Published Oct 2, 2026, 9:15 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 2, 2026, 9:18 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
$VSTM
Bearish
medium confidence
Mentioned
$VSTM
Relevance
2/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$VSTMBearishLow
01

Why it matters

First public disclosure of a CFO's share sale, providing fresh data for short‑term traders.

02

Market read

New insider sale information may prompt modest short‑term price adjustment.

03

What to watch

The CFO may be diversifying holdings; the sale size is negligible relative to float.

Relevance 2/10Novelty 2/10Timing: post‑market filing

Background

Form 4 filing discloses insider transactions required by the SEC.

Company-level read

Ticker impact

$VSTMBearishMedium confidence
Context

CFO Daniel Calkins sold 2,566 shares of Verastem for $20,528 via a 10b5‑1 plan, reducing his stake to 123,781 shares.

Expected impact

potential slight downside as the market prices in the CFO's sale

Evidence & confidence

The transaction size is small relative to market cap, but CFO sales are watched by traders and can trigger short‑term selling pressure.

Market effects

Minimal impact on the biotech sector; insider sales are company‑specific.

No broader regional effect.

Limited to investors tracking Verastem.

Counterpoint

The sale could be routine under a pre‑arranged plan and not reflect negative sentiment.

Key entities

  • Verastem, Inc.

    Biopharmaceutical company developing cancer therapies.

  • Daniel Calkins

    Chief Financial Officer of Verastem.

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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