Mark Rollins Net Worth: Estimate, Sources, and How It’s Calculated

The most relevant Mark Rollins in public life right now is the energy executive who serves as President of Hillwood Energy and HKN Energy, and husband of U.S. Agriculture Secretary Brooke Rollins. There is no widely published, standalone net worth figure for him, but based on his career trajectory, executive roles in private energy companies, and board positions, a reasonable estimate places his personal net worth somewhere in the range of $5 million to $30 million, with the upper end possible if HKN Energy holdings and real estate are factored in. That range is an estimate built from professional signals, not a confirmed figure, and you should treat it that way.

Which Mark Rollins are we actually talking about?

This matters more than it sounds. A quick search for 'Mark Rollins' surfaces several people with that name, and it is easy to conflate them or land on the wrong one. Here are the main candidates worth knowing about:

• Mark Rollins, energy executive: President of Hillwood Energy and HKN Energy Ltd., a position he has held since at least March 2005 according to corporate records, with a formal presidential appointment announced by HKN Energy in January 2021. He is the husband of Brooke Rollins, U.S. Secretary of Agriculture under President Trump. This is almost certainly the person most readers are searching for in 2026.
• Mark Rollins, UK corporate chairman: A separate individual (or possibly the same person with international board experience) who was appointed Non-Executive Chairman of UK-listed engineering company Carclo PLC effective January 1, 2018, and later stepped down from that board. Carclo's 2020 annual report confirms him in that chairman role.
• Gary Rollins (not Mark): Sometimes confused in searches. Gary Rollins is the American billionaire businessman ranked #430 on the Bloomberg 2024 wealth list with a net worth of $6.35 billion. He is a completely different person, connected to the Rollins Inc. pest control empire. Do not let his figures bleed into your research on Mark Rollins.

For this article, the primary focus is the energy-sector Mark Rollins, the one tied to Hillwood Energy and HKN Energy, because that is the individual generating the most current search interest given Brooke Rollins's high-profile cabinet role.

What 'net worth' actually means

Net worth is simply assets minus liabilities. If you add up everything a person owns (real estate, investment accounts, business equity, vehicles, cash, retirement accounts) and subtract everything they owe (mortgages, loans, outstanding debts), the remainder is their net worth. A positive number means they own more than they owe. A negative number, rare for executives at this level, would mean the opposite.

For private individuals like Mark Rollins who do not trade on public markets and have not filed public financial disclosures themselves, the calculation relies on inference: estimated executive compensation in comparable roles, known business affiliations, public real estate records, and any filings tied to a spouse's public role. In Brooke Rollins's case as a Senate-confirmed cabinet member, financial disclosure forms submitted to the U.S. Office of Government Ethics are publicly available and are the single most reliable window into the Rollins household's financial picture.

The best available net worth range for Mark Rollins

No mainstream outlet has published a standalone, sourced net worth figure specifically for Mark Rollins the energy executive. Forbes referenced him in an August 2025 piece on Trump's cabinet being the richest ever, identifying him as president of Hillwood Energy and HKN Energy, but that article focused on cabinet members' collective wealth, not individual spouse figures.

Working from what is publicly knowable, here is the most credible range and the reasoning behind it:

Putting those together, a working estimate of $5 million to $30 million feels grounded in the reality of a long-tenured private energy executive. If you are specifically looking for Mark Shields net worth, this range is the most defensible estimate based on the available signals $5 million to $30 million. The lower end reflects liquid personal savings and moderate real estate; the upper end reflects meaningful equity stakes in HKN Energy or Hillwood, which is a private real estate and energy firm associated with the Perot family. If HKN Energy equity is substantial and markets have been favorable, the number could be higher still, but without confirmed figures it would be irresponsible to claim certainty.

How Mark Rollins built his wealth: career and income streams

Mark Rollins has spent the bulk of his professional career in the private energy sector. According to organizational records, he has been Director and President at Hillwood Energy and HKN Energy Ltd. since as early as March 2005, meaning he has over two decades of tenure in senior leadership at the same pair of companies. That kind of longevity in C-suite energy roles, particularly at firms tied to major private equity and real estate networks like Hillwood (a Ross Perot Jr. enterprise), typically translates into a combination of executive salary, performance bonuses, and equity or profit-sharing arrangements.

HKN Energy is an international oil and gas exploration and production company with assets primarily in the Kurdistan Region of Iraq. The energy sector in Kurdistan has been volatile but periodically lucrative, and executives at oil and gas companies of this type often receive compensation packages that combine base salary in the $300,000 to $700,000 range, bonuses tied to production milestones, and equity stakes that pay out on asset sales or company events.

His UK-listed board role at Carclo PLC from January 2018 adds another dimension. Non-Executive Chairmen of FTSE-listed companies typically receive annual fees in the range of $100,000 to $250,000 (or equivalent in GBP). Carclo is a smaller engineering company, so fees would have been at the lower end of that range, but it represents additional income and signals the kind of multi-board executive profile that compounds net worth over time.

Key income streams at a glance

• Executive salary and bonuses as President of HKN Energy (energy sector C-suite compensation, private company)
• Director and leadership fees from Hillwood Energy, a Ross Perot Jr.-affiliated private firm
• Non-Executive Chairman fees from Carclo PLC (UK-listed, 2018 onward until he stepped down)
• Potential equity or profit-sharing arrangements tied to HKN Energy asset performance in Kurdistan
• Household investment income and any retained assets from two decades of senior corporate compensation

Assets, investments, and public financial signals

Because Mark Rollins works in private companies rather than publicly traded ones, there are no SEC filings or stock ownership disclosures tied directly to him. The clearest public financial signal comes from his wife's position as Agriculture Secretary. Cabinet members are required to file financial disclosure reports with the U.S. Office of Government Ethics (OGE). These forms are public record and typically include details about joint assets, real estate, investment accounts, and outside income. Brooke Rollins's OGE disclosure is the most concrete document available for understanding the couple's combined financial picture.

Beyond that, the Hillwood Energy and HKN Energy connections are worth noting. Hillwood is part of the broader Hillwood Development Company founded by Ross Perot Jr., which has interests in industrial real estate and energy. Being a long-tenured president within that ecosystem often comes with access to co-investment opportunities, preferred deal structures, or carried interest arrangements that can significantly amplify take-home pay relative to salary alone.

There are no publicly confirmed real estate holdings, luxury assets, or large investment positions tied specifically to Mark Rollins in the sources reviewed for this article. That absence of data is itself useful: it suggests he has not been a high-profile purchaser of trophy properties or made major public market moves that would show up in property records or news coverage.

Why different websites give wildly different numbers

If you have searched across a few celebrity net worth sites before landing here, you have probably seen numbers that range from a few hundred thousand dollars to tens of millions with no clear explanation of how they were calculated. This is a widespread problem in the net worth research space, and it stems from a few predictable issues.

1. Name confusion: Sites often aggregate data loosely and may be pulling figures for a different Mark Rollins entirely, such as a local businessman or a minor public figure with the same name. Gary Rollins's $6.35 billion Bloomberg ranking could easily bleed into Mark Rollins searches on low-quality aggregator sites.
2. Outdated data: Many celebrity net worth sites publish a figure once and never update it. A number from 2018 reflects Carclo-era compensation and misses any changes in HKN Energy's fortunes since then.
3. No methodology disclosed: Reputable financial outlets explain their methodology. Sites that list a precise figure like '$12.4 million' with no sourcing are almost certainly guessing, often by reverse-engineering a rough career income estimate without accounting for taxes, spending, or liability.
4. Spouse attribution: Some sites inflate a figure by attributing a cabinet member's perceived institutional prestige to household wealth without any underlying financial data.
5. Private company opacity: Because HKN Energy is private, there is no public equity value to reference. Sites that assign equity-based estimates are speculating without a market-price anchor.

This is not unique to Mark Rollins. You will find the same reliability problems when researching other executives in similar positions. The solution is always to trace any number back to its source and ask: is this a confirmed figure, an estimate with explained methodology, or a guess presented as fact?

How to verify and update this estimate yourself

Here is a practical checklist for anyone who wants to go deeper or check back as new information emerges.

1. Check Brooke Rollins's OGE financial disclosure: Go to the U.S. Office of Government Ethics public disclosure portal (oge.gov) and search for Brooke Rollins's most recent Annual or New Entrant disclosure. These forms show joint household assets, income ranges, and liabilities. They use broad ranges rather than exact figures, but they are the most credible primary source available.
2. Search HKN Energy corporate filings: HKN Energy has had reporting obligations in certain jurisdictions. Check UK Companies House if there are any UK-registered entities, and search for any SEC filings if HKN has U.S.-registered securities. This may surface compensation or equity details.
3. Look up Carclo PLC annual reports: For the period when Mark Rollins was Non-Executive Chairman (2018 through his departure), Carclo's annual reports (freely available on their investor relations page and via Companies House) will list director remuneration. This gives a confirmed number for at least that income stream.
4. Search property records: In the state where the Rollins family is based (likely Texas given Hillwood's Dallas headquarters), county appraisal district websites list property ownership and assessed values publicly. Search the relevant county's CAD site for Rollins.
5. Set a Google Alert: Set alerts for 'Mark Rollins HKN Energy' and 'Brooke Rollins financial disclosure' so that any new press coverage or official filings surface automatically.
6. Check LinkedIn and The Org: For role changes or new board appointments that might signal a compensation event or equity liquidity moment, organizational profile sites like The Org and LinkedIn are useful early indicators.

Net worth estimates for private executives like Mark Rollins are living numbers. They shift with energy market performance, real estate valuations, and career changes. The $5 million to $30 million range offered here reflects the best available evidence as of April 2026, but a major liquidity event at HKN Energy or a new OGE disclosure from Brooke Rollins could move that range substantially in either direction.

If you are comparing this profile to other executives in the broader 'notable Marks' space, it is worth noting that the research challenges here are common across private-sector figures. If you are specifically searching for Mark Stark net worth, you can apply the same method of checking sources and disclosure signals rather than trusting unsourced figures. Profiles like those for Mark Shook, Mark Read, and Mark Stark involve similar methodology questions when public filings are limited and career income must be inferred rather than confirmed. If you are also looking up the mark read net worth, use the same approach: verify the source, check for methodology, and avoid unsourced jumps to a single figure. You can apply the same checklist to the Mark Read profile as well, starting by verifying whether any figure is sourced or just an estimate mark read net worth. The principle is the same in every case: trace every number to its source, and treat any figure without a methodology as a rough approximation at best.