Carrier profile · USDOT 2460348 · MC-850066 · Updated Jun 28, 2026
KARST CORPORATION
DBA SERIOUS BUSINESS TRUCKING
1 power unitLocal · 2 statesOLYMPIA FIELDS, IL50/100
CARRIER ACTIVEMC-850066 ACTIVE
Authority & Insurance
Active operating authority by type and the full insurance continuity timeline — insurer, policy, coverage, and any lapses — so you can confirm they can legally and adequately haul your load today.
Operating authority· 49 CFR · per type
Operating authority
- Common
- Active
- Contract
- None
- Broker
- None
Insurance & bonds
BIPD / liability$750,000 in force
Cargo filing (census)Not recorded per census
Surety bond (census)Not recorded per census
Insurance adequacy· filed BIPD vs the $750K federal floor
$750K in forcegeneral-freight federal minimum
$750K floor
Insurance continuity· insurer · policy · lapses
$750K BIPD last filed ’20 · 4 insurers · 0 lapsesInsurer churn
beyond this history
2014201720202023now
Shorter eras are too brief to label at this scale — all 4 insurers are named in the list below.
BIPD in force — $750,000 · ARTISAN & TRUCKERS CASUALTY COMPANY · since Jan 2020
All 4 insurer eras · dates, limits, renewals
| Insurer | Period | Limit | Renewals |
|---|---|---|---|
| NORTHLAND INSURANCE COMPANY | Jan 2017 → Jan 2020 | $750K | 1 |
| SENTRY SELECT INSURANCE COMPANY | Jan 2016 → Feb 2017 | $750K | 2 |
| NATIONAL LIABILITY & FIRE INS CO. | Jan 2015 → Jan 2016 | $750K | 1 |
| OCCIDENTAL FIRE AND CASUALTY CO. OF N.C. | Jan 2014 → Jan 2015 | $750K | 1 |