Massivemarkets

SEC Form 4

USA COMPRESSION PTNRS LP (USAC) insider trading

In the 12 months to Oct 24, 2026, one USAC insider reported open-market sales of $1.1M across 1 filing; one director bought $529.7K.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$1.1M
1 filing · 1 insider
Open-market purchases
$529.7K
2 filings · Bradford D. Whitehurst, Director

Who traded USAC, and when

  • Purchase
  • Sale

USAC daily close from Oct 24, 2025 to Oct 23, 2026, between $21.99 and $30.30, last $25.05. 1 sale and 2 purchase filings by 2 insiders, marked at their filing dates. Christopher W. Porter, Officer (see filing): sold $1.1M across 1 filing, first filed Feb 20, 2026, last Feb 20, 2026. Bradford D. Whitehurst, Director: bought $529.7K across 2 filings, first filed Feb 19, 2026, last Aug 24, 2026.

Largest mark · tap a row for others

Christopher W. Porter · Officer (see filing)

Sale $1,065,600

40,000 shares at $26.64 avg

Filed Feb 20, 2026

Close on filing date $26.77

USAC daily closelast $25.05

Christopher W. Porter · Officer (see filing)

$1.1M sold

Bradford D. Whitehurst · Director

$529.7K bought
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

3 filings in the last 12 months
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Christopher W. PorterOfficer (see filing)$1.1M—1—
Bradford D. WhitehurstDirector—$529.7K2—
Other insider activity (not market trades) · 23 records
  • Option exercises6 records
  • Grants and awards11 records
  • Other6 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

Build this yourself

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Agent prompt

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for USAC every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.