Carrier profile · USDOT 144498 · MC-141341 · Updated Jul 14, 2026
Groskopf Logistics Services Inc
2 power unitsSONOMA, CA50/100
CARRIER INACTIVEMC-141341 INACTIVE
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
- Inactive
- Contract
- Inactive
- Broker
- None
Insurance & bonds
BIPD filing (census)Not recorded per census
Cargo filing (census)Not recorded per census
Surety bond (census)Not recorded per census
Insurance continuity· insurer · policy · lapses
$750K BIPD last filed ’04 · 5 insurers · 1 lapseCoverage lapse
Firemans Fund’76–’99
beyond this history
1976198920022015now
Shorter eras are too brief to label at this scale — all 7 insurers are named in the list below.
This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.
All 7 insurer eras · dates, limits, renewals
| Insurer | Period | Limit | Renewals |
|---|---|---|---|
| ZC INS. CO /CONVERIUM INS.(NA) INC. | Jun 2001 → Jul 2004 | $750K | 2 |
| ZC INS. CO /CONVERIUM INS.(NA) INC. | Nov 2000 → Jan 2001 | $750K | 2 |
| WESTPORT INSURANCE CORPORATION | May 1999 → Nov 2000 | $1M | 1 |
| FIREMAN'S FUND INSURANCE CO. | May 1996 → Jul 1999 | $750K | 1 |
| AMERICAN EAGLE INSURANCE CO | Mar 1992 → Jun 1996 | $750K | 1 |
| INDUSTRIAL INDEMNITY CO. | Nov 1989 → Jan 2001 | $750K | 1 |
| FIREMAN'S FUND INSURANCE CO. | Feb 1976 → May 1999 | $1M | 1 |