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SEC insider activity covers quarterly filings through June 30, 2026. Later filings are not included. Reported roles do not establish current employment or current holdings. SEC filing documents, sections and filing-text search cover filings dated January 1, 2000 onward. Earlier filings are deferred until after launch.
SEC Insider
$2.3M
188 transactions
Summary
MARKWEST HYDROCARBON INC is an organization.
As filed, including amendments; not net cash flow or current holdings. Joint reports count once. Totals cover known values only.