Robert Clark

Male

Coding notes. PLACEHOLDERS: household "two-parent" (he writes about his father; his mother and the family's structure are not described), originCapital "wage-savings" (the proceeds of selling his equipment-company stake funded the start per his own account, but the amount and the exact route are not established, and no enum fits "sale proceeds from a business stake"), raisedOutsideCapital false (inferred; no outside funding is reported in anything found, which is not proof of none). Hardness 5 is a judgement: a father with an established trade business and early paid work in it, but a college dropout with no documented family capital or inheritance, starting at 25. headwinds 2: self-disclosed ADHD and a hard time in school, no identity-based barrier documented. Birth year 1959 from Wikipedia's category and consistent with Forbes age 67 and his "I was 25" in 1984. Ethnicity not established so coded.ethnicities is omitted. Mostly Wikipedia, Forbes and a first-person New York Times piece (read via the Wayback Machine). SEC filings do not apply (private company).

not established

Not established in the sources consulted.

not established

Not established.

not established

Not established what he lived on in 1984 beyond proceeds of the equipment-company sale.

not established

Not established how the first years were financed.

not established

Not established.

Father a painting contractor, in Clark's own account. Mother's occupation not given.

First-person essay by Clark as told to the paper. The NYT page was read through the Wayback Machine.

A parent worked for themselves, the strongest known predictor of founding.

A "painting contractor" is normally self-employed, but the essay doesn't say how large the business was.

not established

Not established.

Clark has written that attention deficit disorder "has been the driver of my life" and that he had a hard time focusing in school. He credits a fifth-grade teacher with working out a way to teach him and a few other students in short sessions.

Self-disclosed in a first-person essay. Formal diagnosis and treatment are not described.

His wife Ellen, whom he writes he had known since junior high, died in 2010 of a rare genetic disorder that causes strokes. He says he traveled alone afterward, ending up trekking in Nepal.

In his own words. It came decades after the company was built, so weighs little as a headwind.

St. Louis area; Wikipedia says he grew up in Bridgeton, Missouri

Clark himself says only "St. Louis" for his elementary school.

Parkway Central High School, with a co-op program in his senior year

Wikipedia names the high school; the co-op program is from Clark's own essay.

Clayco itself, founded in St. Louis in 1984 after he sold his stake in an equipment company.

not established

No co-founder named in the sources consulted.

25

Age when he started the construction company; he had worked in his father's painting business earlier.

7

Rough arithmetic from partner at 19 in 1978 to Clayco in 1984. Earlier work for his father is not counted.

Worked for his father's painting contracting business, estimating and supervising jobs, during his senior year of high school.

No degree. Wikipedia says he left Fontbonne University to found his firm; the University of Missouri System gave him an honorary degree in 2023.

Forbes also calls him a college dropout. Years attended not established.

not established

Not established.

Proceeds from selling his stake in the equipment company, per his own account of starting Clayco. The amount is not stated.

Wikipedia states the stake sale; Clark's essay says "I sold my stake and started a construction company."

not established

Not established either way.

not established

Forbes lists him as self-made; it does not detail family money.

It paid its own way from the start. Revenue came before any outside money.

He reports $1.2 million in revenue in the first year; whether outside money also came in isn't stated.

Privately held. Forbes says Clark owns most of Clayco. Other owners and percentages are not disclosed.

Clark says he knew he would be a builder from watching a construction site near his elementary school in the 1960s.

not established

He says he knew nothing about running a business at the start, but no failed venture is documented.

25

Age at founding. When the growth actually took off is not established.

25

42

1984 to 2026.

Construction, design-build and real estate development

7000000000

Forbes real-time figure as of 2026-10-12, rank 575 on the world real-time list. Forbes also lists him as number 16 of 34 newcomers on the 2026 Forbes 400 at $7 billion (forbes.com.au/?p=206620); his own Forbes 400 rank was not shown in what could be read.

Journalistic estimate

Privately held, no filing to check against.

2026

not established

Not established; private company. Forbes reports 2024 company revenue of $7.6 billion.

Held in a private company he mostly owns; how much has been taken out is not established.

U.S. Commissioner General at Expo 2020 Dubai (appointed 2021) and a member of the Committee for the Preservation of the White House (2010). The Clayco Foundation gave $4.1 million to Washington University research on the disease that killed his wife.

Uncapped

not established

None found in the sources consulted. This is not a clearance; no docket or OSHA search was done.

After

Nothing material to code, so this is a placeholder. The only public controversy found, the 2026 data center dispute, is local political opposition, not a legal matter.

Civic minded, Self made

Thin. Forbes labels him self-made; Wikipedia and the Business Journal describe his civic work. Two outlets, not a study of how peers see him.

Press

Asset

Inferred from government appointments under two presidents of different parties. The 2026 Festus data center opposition suggests local resistance to a project, not to his reputation as such.