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Directory · Company · Updated 2026-10-18

Capstone Specialty Insurance Company · NAIC 17862

Where Capstone Specialty Insurance Company is admitted, where it's eligible for surplus lines, the lines it's licensed for and how much of each it writes, from state regulators' public lists and market share reports.

Capstone Specialty Insurance Company (NAIC 17862) is a property and casualty insurer domiciled in Texas, part of Markel Group. State regulators list it as licensed (admitted) in Maryland, Missouri, Texas and an eligible surplus lines insurer in Alaska, Colorado, Connecticut, Idaho, Mississippi, Montana, Rhode Island, Tennessee, Washington.

By Sam Alishahi, independent insurance broker · All companies

By state

Where it's licensed

States whose regulator lists are loaded: Alaska, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Kentucky, Massachusetts, Maryland, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Jersey, Nevada, New York, Ohio, Oklahoma, Oregon, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Washington, Wisconsin, West Virginia, Wyoming. Not on the lists we have for California, Delaware, Florida, Georgia, Hawaii, Iowa, Illinois, Kentucky, Massachusetts, Minnesota, North Carolina, North Dakota, Nebraska, New Jersey, Nevada, New York, Ohio, Oklahoma, Oregon, South Carolina, South Dakota, Utah, Wisconsin, West Virginia, Wyoming, which doesn't by itself mean it isn't licensed there.

StateStatusLines licensedSinceSource
AlaskaSurplus lines (eligible)——Alaska, 2026-10-18
ColoradoSurplus lines (eligible)—2026-07-01Colorado, 2026-10-18
ConnecticutSurplus lines (eligible)——Connecticut, 2026-10-18
IdahoSurplus lines (eligible)——Idaho, 2026-10-18
MarylandAdmitted (licensed)——Maryland Insurance Administration, 2026-10-17
MississippiSurplus lines (eligible)——Mississippi Insurance Department, 2026-10-17
MissouriAdmitted (licensed)——Missouri, 2026-10-18
MontanaSurplus lines (eligible)——Market share report
Rhode IslandSurplus lines (eligible)——Rhode Island, 2026-10-18
TennesseeSurplus lines (eligible)——Tennessee, 2026-10-18
TexasAdmitted (licensed)Aircraft and aviation, Personal auto, Equipment breakdown, Credit, Crime (burglary and theft), Farm and crop, Fidelity bonds, Glass, Inland marine, General liability, Ocean marine, Commercial property (fire and allied lines), Surety bonds, Workers' compensation2025/12/17Texas Department of Insurance, 2026-10-17
WashingtonSurplus lines (eligible)——Washington Office of the Insurance Commissioner and the Surplus Line Association of Washington, 2026-10-17
Surplus lines

What it writes as a surplus lines insurer in Texas

Coverage lines on which Capstone Specialty Insurance Company filed surplus lines premium with the Surplus Lines Stamping Office of Texas, January to September 2026, ranked by premium among the insurers that filed on each line. Most surplus lines insurers write nationally, so this is a good guide to what it takes on elsewhere too.

CoverageRank in Texas
Directors and officers (D&O) liability#112 of 122

Source: SLTX Market Data Reports, "Coverage Totals by Insurer". Ranks only; see the report for premium.

Method and source

Each row comes from the named regulator's public company list on the date shown, joined by NAIC number. "Admitted" means licensed by the state and backed by its guaranty fund; "surplus lines" means eligible to take risks the admitted market declines, without rate or form approval and, except in New Jersey (which has a separate surplus lines guaranty fund), without guaranty fund protection. Premium and rank come from state market share reports that list every company. This is a public-records directory, not a rating or recommendation; for the company's own filings use the NAIC's Consumer Information Source.

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