MPLX Lp (MPLX)

Midstream pipelines and processing, staffed by the parent. Read October 19, 2026 from the annual report for the period ending December 31, 2025, filed February 26, 2026. Ranked 5 of the 32 Energy companies read so far, by the share within reach now.

MPLX’s 5,762 employees, provided by its general partner Marathon Petroleum, run gas gathering and processing, crude and products pipelines and terminals, split by description.

The figures on this page come from the company's own annual report and from BLS staffing patterns for its industries, never from a roster. They are estimates with a stated method. Nothing here says what the company will do: within reach is not a forecast of jobs lost or of savings.

What follows from the reading

Share of working time within reach of AI, on the long-run pace at four in five: 22% now, 34% at the end of 2027, 40% at the end of 2028, 42% at the end of 2030. By the patterns, the work is about 42% desk work, 12% people work and 46% body work. These are the site's industry estimates weighted by the shares below: estimates with a stated method and range, not a forecast of what the company will do. By the same patterns, at the end of 2028 about 53% of the working time stays with people (conversation, in-person and hands-on work), 38% becomes checking a model's work and 5% could be handed over with lighter checks, from the industries' own figures, not the company's roles.

Headcount

5,762 employees as of December 31, 2025 (stated). The filing counts no employees by country; the assets it describes are in U.S. basins and regions.

The filing: “As of December 31, 2025, our general partner and its affiliates had approximately 5,762 full-time employees that provide services to us under our employee services agreements.”

The workforce as industry patterns

What the filing says about the workforce: Approximately 5,762 full-time employees of the general partner and its affiliates (Marathon Petroleum) provide services under employee services agreements; the partnership has no employees of its own; benefits and programs are MPC’s.

Companies read with the same leading pattern

Other companies whose largest staffing pattern is also Pipeline Transportation of Natural Gas, largest first, each read from its own annual report. Within reach now and at the end of 2028, long-run pace, four in five.

• Kinder Morgan, Inc. (KMI, 11,028 employees)21% now, 36% by 2028
• The Williams Companies, Inc. (WMB, 5,987 employees)20% now, 38% by 2028

What the filing says about AI

6 sentences in the filing name AI. The filing names AI six times, as risks: AI-enabled cyber attacks and the integration of AI into its processes.

• “Summary of Risk Factors We have in the past been adversely affected by certain of, and may in the future be adversely affected by, the following: a significant decrease in crude oil and natural gas production in our areas of operation; challenges in accurately estimating expected production volumes of our producer customers; 19 Table of Contents our dependence on third parties for the crude oil...”
• “Our information systems (and those of our third-party business partners and service providers), including our cloud computing environments and operational technology environments, are subject to numerous and evolving cybersecurity threats and attacks, including ransomware and other malware, phishing and social engineering schemes, supply chain attacks, and advanced artificial intelligence attac...”
• “As we integrate artificial intelligence technologies into our processes, these technologies may present business, compliance and reputational risks.”
• “Recent and continuously evolving technological advances in artificial intelligence ("AI") and machine-learning technology present new opportunities and also pose new risks.”
• “The utilization of AI could also result in loss of intellectual property and subject us to heightened risks related to intellectual property infringement or misappropriation.”

Its annual reports, year by year

Sentences naming AI in each annual report, counted by one rule, beside the median report in the Index that year. Each count links its filing. Every company, by year and sector

• Fiscal 20210median 0
• Fiscal 20220median 0
• Fiscal 20231median 1
• Fiscal 20246median 4
• Fiscal 20256median 10

Headcount by filing year

As reported in each year's annual report, with the filing. A year marked not read had no figure the reading could take from the report's text.

Limits of this reading

• The workforce is the general partner’s, provided under employee services agreements, recorded as the filing states it (rule 8).
• No count by segment; the split among pipelines, terminals and processing is by description.
• The revenue table’s lines are revenue types, not segments, and were not used.

Source: the company's annual report on EDGAR, accession 0001552000-26-000009, the filing. Read by Claude Fable 5.1 under rubric version 1, by the method. A company can write to info@stratussc.com to have its reading checked against its filing.