SEC EDGARAUG 311 min read$MPC

Brzezinski Erin M sold $207K of MPC

Brzezinski Erin M (VP and Controller) sold 570 shares of Marathon Petroleum Corp (MPC) at $362.79 ($0.21M total) on 2026-08-27.

Original reporting

SEC EDGAR · Brzezinski Erin M

Published Aug 31, 2026, 8:11 PM UTC

Analysis

AlphAI AI DeskAI-generated

Added to AlphAI Aug 31, 2026, 8:33 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 Desk Scoring methodology Report an issue

AlphAI market briefInsider activity

Primary signal

$MPC

Neutral

medium confidence

Mentioned

$MPC

Relevance

4/10

AlphAI data visualization · based on SEC EDGAR

Decision brief

The 30-second read

$MPCNeutralLow

Why it matters

The sale represents a modest reduction in insider ownership, unlikely to move the stock.

Market read

Routine insider sale with limited trading relevance.

What to watch

Potential upcoming capital allocation decisions or compensation changes not disclosed.

Relevance 4/10Novelty 4/10Timing: filed Aug 31 after market close

Background

Form 4 filings disclose insider trades; investors monitor for material changes in insider holdings.

Company-level read

Ticker impact

AI estimates · verify against primary disclosures

$MPCNeutralMedium confidence

Context

VP and Controller Erin M. Brzezinski sold 570 shares of Marathon Petroleum for $206,790 on Aug 27, filing a Form 4 on Aug 31.

Expected impact

Minimal short-term impact; price likely unchanged.

Evidence & confidence

The transaction amount (~$207K) is trivial for a large integrated oil company; no change in holdings significance.

Market effects

Sector

None; typical insider transaction in energy sector.

Regional

None; US-listed company with no broader regional effect.

Global

None

Counterpoint

What could challenge this read

Insider sales sometimes precede negative news, but size is too small to infer.

Key entities

Company
Marathon Petroleum Corp
US integrated refiner and marketer, ticker MPC.
Insider
Erin M. Brzezinski
VP and Controller, reported sale of 570 shares.

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