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SEC EDGAR$TDC

MCMILLAN STEPHEN sold $300K of TDC

MCMILLAN STEPHEN (President and CEO) sold 10,000 shares of TERADATA CORP /DE/ (TDC) at $30.02 ($0.30M total) on 2026-09-15 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · MCMILLAN STEPHEN
Published Sep 17, 2026, 6:09 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 17, 2026, 6:14 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.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$TDC
Neutral
medium confidence
Mentioned
$TDC
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$TDCNeutralLow
01

Why it matters

The disclosed sale is modest relative to the insider's total holdings and follows a pre‑arranged plan, suggesting limited predictive power.

02

Market read

Primary relevance is to traders tracking insider activity; broader market impact is negligible.

03

What to watch

The 10b5‑1 plan pre‑arranges sales, reducing the informational content of the transaction.

Relevance 3/10Novelty 6/10Timing: post‑filing 2026‑09‑15

Background

Form 4 filings disclose insider transactions; investors monitor them for potential signals.

Company-level read

Ticker impact

$TDCNeutralMedium confidence
Context

President and CEO Stephen McMillan sold 10,000 shares for $300,170 via a 10b5‑1 plan.

Expected impact

Potential modest downward pressure if market interprets as negative signal.

Evidence & confidence

Sale size is modest relative to holdings; executed under pre‑arranged plan, limiting informational value.

Market effects

Sector

Minimal impact on the data‑analytics sector.

Regional

No significant regional effect.

Global

Limited to investors tracking insider activity.

Counterpoint

What could challenge this read

Sale could be routine liquidity management, not a bearish sign.

Key entities

  • Company
    Teradata Corp

    Data‑analytics and cloud‑based services provider.

  • Executive
    Stephen McMillan

    President and CEO of Teradata.

Read at source← All news

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.

TDC insider trading history →

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