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Carrier profile · USDOT 4087587 · MC-1556450 · FMCSA data fetched 2026-10-14

STACK OPCO LLC

36 power units21 driversInterstateMT PLEASANT, PA

Census status Active (A)MC-1556450 · code A
Official links FMCSA SAFER

Data completeness & update times

Per official source. A failed read is not zero; “not yet imported” means the directory database has no stored copy yet — not “no authority” or “no insurance”.

SectionSourceSource updatedFetchedStatus
Registration (Census)az4n-8mr22026-10-14 PTOct 14, 10:44 AM PTRead
Operating authorityinys-ebih2026-10-14 PTOct 14, 10:44 AM PTRead
Authority historyyu5v-wbh62026-10-14 PTOct 14, 10:44 AM PTRead
Insurance filingsc5y8-a4uz2026-10-14 PTOct 14, 10:44 AM PTRead
Insurance history3uet-3z4i2026-10-14 PTOct 14, 10:44 AM PTRead
Insurance history (legacy)Content frozen by FMCSA on 2026-05-14 (portal metadata 2026-10-14 is a republish, not new data); gap-fill only6sqe-dvqs2026-05-14Oct 14, 10:44 AM PTStale (source > 90 days)
Inspections, 24 moDriver-level 26 · vehicle-level 18fx4q-ay7w2026-10-14 PTOct 14, 10:44 AM PTRead
Crashes, 24 moaayw-vxb32026-10-14 PTOct 14, 10:44 AM PTNot provided by official source
Directory DB: authority copyLive official read above is used for the profilecarrier_authorityNot providedOct 13, 06:40 PM PTRead
Directory DB: insurance copycarrier_insuranceNot providedOct 7, 06:48 PM PTRead

VAX record reference score

Beta · trial v1

Not an FMCSA rating, not a prediction and not a load decision. Thresholds are fixed and not yet calibrated.

Reference score (0–100)

98

Coverage — determinable weight, not a score

100/100

Crashes, 24 mo (shown only, not scored)

0

How this trial score works and its limits →

01

Safety

Source: SMS AB PassProperty (4y6x-dmck) · raw queryDataset updated 2026-10-13 07:05 UTCFetched 2026-10-14 17:44 UTC

Inspections

25

Driver insp.

25

OOS 0

Vehicle insp.

17

OOS 1

Safety rating

—

official, as published

Driver out-of-service rate0.0%
0%50%100%

0 out-of-service of 25 inspections

Vehicle out-of-service rate5.9%
0%50%100%

1 out-of-service of 17 inspections

Rate = OOS inspections ÷ inspections, from the SMS summary; N/A when there are 0 inspections. The SMS summary has no monthly series; the monthly chart below is built from record-level inspections. Roadside inspections are a sample, not the whole fleet.

Roadside inspections · record level

Source: Vehicle Inspection File (fx4q-ay7w) · raw queryDataset updated 2026-10-14 11:04 UTCFetched 2026-10-14 17:44 UTC

Window: 2024-10-14 → 2026-10-14 (24 months ending on the fetch date). Records FMCSA has not yet uploaded are not included.

Inspections (records)

26

States observed

9

Driver-level insp.

26

with driver OOS 0 · 0.0%

Vehicle-level insp.

18

with vehicle OOS 1 · 5.6%

Monthly inspections & out-of-service rate · 24 months

Inspections per month (count)

03524-1025-0125-0425-0725-1026-0126-0426-0726-10
  • Vehicle-level inspections (I, II, V, VI)
  • Driver-level inspections (I, II, III, VI)

Out-of-service rate by month (%)

0%25%50%75%100%24-1025-0125-0425-0725-1026-0126-0426-0726-10
  • Vehicle OOS rate
  • Driver OOS rate (dashed)
  • Hollow point = fewer than 5 eligible inspections

Computed from record-level inspections in fx4q-ay7w (window 2024-10-14 → 2026-10-14, fetched 2026-10-14 17:44 UTC). OOS rate = inspections with driver/vehicle OOS > 0 ÷ inspections at a driver/vehicle-examining level — not violation counts. Months with no eligible inspection leave a gap (not 0%). The SMS summary is not used to build history.

Driver-level = Levels I, II, III, VI; vehicle-level = Levels I, II, V, VI (FMCSA North American Standard levels). Level IV special studies are in neither. These record-level counts can differ from the SMS summary above, which uses its own snapshot and is left unchanged.

DateStateLevelViolationsOOSDriver viol/OOSVehicle viol/OOSID
2026-10-08NM1000 / 00 / 089212415
2026-08-26MS1000 / 00 / 088801846
2026-08-17MS1000 / 00 / 088717719
2026-08-10LA3000 / 00 / 088667879
2026-08-03WY1000 / 00 / 088592866
All 26 inspections, map and level breakdown →

Reported crashes

Source: Crash File (aayw-vxb3) · raw queryDataset updated 2026-10-14 10:43 UTCFetched 2026-10-14 17:44 UTC

Window: 2024-10-14 → 2026-10-14 (24 months ending on the fetch date). Records FMCSA has not yet uploaded are not included.

Crash reports

0

Fatalities

0

Injuries

0

Tow-away

0

The source responded with no crash reports in this window.

Crash reports are listed as filed by states; they do not determine fault or preventability. VIN, plate and exact location are not shown.

02

Authority & Insurance

Operating authority by docket

DocketAuthority typeStatusBI&PD req. / on file (source value)Cargo req./on fileBond req./on file
MC1556450Motor Carrier of Property (Except Household Goods)Active750,000 / 750,000N / NN / N

Source: Motus Carrier – All With History (inys-ebih) · raw queryDataset updated 2026-10-14 11:01 UTCFetched 2026-10-14 17:44 UTC

Authority status history

FMCSA change dateDocketAuthority typeNew statusReason (source)
2023-07-19MC1556450Motor Carrier of Property (Except Household Goods)ActiveGRANTED

Source: Motus AuthHist – All With History (yu5v-wbh6) · raw queryDataset updated 2026-10-14 11:01 UTCFetched 2026-10-14 17:44 UTC

Status and reason text are shown exactly as FMCSA publishes them. The change date is FMCSA's status_change_date; “Dataset updated” is when FMCSA last published the file, and “Fetched” is when VAX read it. The two authority files are shown side by side and are not reconciled by VAX. Amounts: the dictionary says “thousands”, but published values look like dollars, so raw values are shown. Census status is not authority.

Insurance filings

InsurerTypeFormPolicyMax / underlying (source)Effective
Liberty Mutual Fire Insurance CompanyBI&PD · PrimaryBMC-91XAS266106745601750,000 / 02026-04-01

Source: Motus Insur – All With History (c5y8-a4uz) · raw queryDataset updated 2026-10-14 11:01 UTCFetched 2026-10-14 17:44 UTC

Filings as recorded by FMCSA — not a certificate of insurance or proof of current coverage. Amounts are source values (dictionary: thousands).

Source: Motus InsHist – All With History (3uet-3z4i) · raw queryDataset updated 2026-10-14 11:01 UTCFetched 2026-10-14 17:44 UTC

Source: InsHist – legacy (6sqe-dvqs) · raw queryDataset updated 2026-10-14 13:15 UTCFetched 2026-10-14 17:44 UTCFrozen by FMCSA since 2026-05-14

Prior policies

Insurance timeline
Hover a bar for insurer and dates.

Current filings (c5y8-a4uz) — effective date only

Liberty Mutual Fire Insurance Company · 2026-04-01 → end not published

Prior policies (3uet-3z4i + legacy 6sqe-dvqs) — effective → cancellation

Liberty Mutual Insurance Company · 2023-06-30 → 2026-10-09

202420252026
2023-06-302026-10-09

Bars run only between published effective and cancellation dates. Current filings show their effective date only — no end is assumed and no continuous coverage is inferred. Current history: 3uet-3z4i; legacy rows from 6sqe-dvqs (frozen 2026-05-14) are kept only when not already in the current file.

  • Liberty Mutual Insurance Company

    Effective
    2023-06-30
    Cancelled
    2026-10-09
    Method
    TERM/REPL
    Policy
    AS2-661-067456-01
    Dataset
    3uet-3z4i
03

Equipment

Source: FMCSA Company Census (az4n-8mr2) · raw queryDataset updated 2026-10-14 10:58 UTCFetched 2026-10-14 17:44 UTC

Power units

36

Truck units

36

Bus units

0

EquipmentOwnedTerm leasedTrip leased
Straight trucks———
Truck tractors36——
Trailers4——
Ownership mix by equipment type
Straight trucksIncomplete source fields — no share computed—
Truck tractorsIncomplete source fields — no share computed—
TrailersIncomplete source fields — no share computed—
  • Owned
  • Term leased
  • Trip leased

Tractors and trailers are drawn separately and never merged into power units. A row with any empty field shows no share.

MCS-150 self-reported counts. “—” means the source field is empty, not zero.

Vehicles observed in roadside inspections

Units: FMCSA Inspections Per Unit (wt8s-2hbx)Decoder: NHTSA vPICDataset updated 2026-10-14 13:06 UTCFetched 2026-10-14 17:44 UTCWindow 2024-10-14 → 2026-10-14

26 inspection(s) → 42 unit row(s) → 23 unique vehicle(s) by VIN. Observed vehicles are not the full fleet and not proof of current ownership. Labels like PU-01 are anonymous; full VINs and plates are never shown.

Power units observed

Unique units

15

Decode coverage

100%

15/15

Average age

1.2 yr

n=15

Newest / oldest

2025 / 2022

Make

  • PETERBILT15

Model year

  • 20221
  • 202514

Average age = 2026 − model year, over 15 unit(s) with a decoded year. Units without a decode are excluded from every share.

Trailers observed

Unique units

8

Decode coverage

100%

8/8

Average age

4.6 yr

n=8

Newest / oldest

2023 / 2016

Make

  • WABASH VANS4
  • UTILITY TRAILER MANUFACTURER2
  • GREAT DANE TRAILERS1
  • HYUNDAI TRANSLEAD TRAILERS1

Model year

  • 20161
  • 20181
  • 20221
  • 20235

Average age = 2026 − model year, over 8 unit(s) with a decoded year. Units without a decode are excluded from every share.

Observed equipment list
UnitMakeModelYearBody classInspectionsLast seen
PU-01PETERBILT5792025Truck-Tractor12026-10-08
PU-02PETERBILT5792025Truck-Tractor22026-08-26
PU-03PETERBILT5792025Truck-Tractor12026-08-17
TR-01WABASH VANSDry Van Duraplate2018Trailer12026-08-10
PU-04PETERBILT5792025Truck-Tractor62026-08-10
PU-05PETERBILT5792025Truck-Tractor12026-08-03
PU-06PETERBILT5792025Truck-Tractor12026-07-21
TR-02UTILITY TRAILER MANUFACTURERUtility Trailer Manufacturer2023Trailer22026-07-06
PU-07PETERBILT5792025Truck-Tractor22026-07-06
TR-03GREAT DANE TRAILERSGreat Dane Trailers2023Trailer32026-06-29
04

Operations

Source: FMCSA Company Census (az4n-8mr2) · raw queryDataset updated 2026-10-14 10:58 UTCFetched 2026-10-14 17:44 UTC

Carrier operation

Interstate (A)

Classification: PRIVATE PROPERTY;AUTHORIZED FOR HIRE

MCS-150 mileage

350,719 mi

Reported year 2025

Cargo classifications checked
  • General freight
  • Building materials
  • Fresh produce
  • Meat
  • Commodities dry bulk
  • Refrigerated food
  • Beverages
  • Paper products
  • Construction
Interstate drivers >100 mi / ≤100 mi
21 / 0
Intrastate drivers >100 mi / ≤100 mi
0 / 0
Hazmat indicator (hm_ind)
N
Registered address
1001 TECHNOLOGY DRIVE STE 1129 DOOR 22G, MT PLEASANT, PA, 15666, US

Lanes and service areas are not published by FMCSA. The registered address is not an operating map, and inspection states are observations only — not live routes or a service area.

05

Identity & Federal

Source: FMCSA Company Census (az4n-8mr2) · raw queryDataset updated 2026-10-14 10:58 UTCFetched 2026-10-14 17:44 UTC

Legal name
STACK OPCO LLC
DBA
Not provided
USDOT
4087587
MC / FF / MX
MC-1556450
Physical address
1001 TECHNOLOGY DRIVE STE 1129 DOOR 22G, MT PLEASANT, PA, 15666, US
Mailing address
1001 TECHNOLOGY DRIVE STE 1129 DOOR 22G, MT PLEASANT, PA, 15666, US
Business type
Not provided
Carrier/shipper code
C
Census add date
2023-06-08
MCS-150 filing date
2026-08-27
Power units / drivers
36 / 21
Latest review (type · date)
Not provided
06

Federal activity

  1. 2026-10-093uet-3z4i

    Prior policy ended (term/repl) — Liberty Mutual Insurance Company

  2. 2026-08-27Census

    Latest MCS-150 filing

  3. 2026-04-01c5y8-a4uz

    Insurance filing effective — Liberty Mutual Fire Insurance Company

  4. 2023-07-19yu5v-wbh6

    Authority status change: Motor Carrier of Property (Except Household Goods) → Active (GRANTED)

  5. 2023-06-08Census

    Added to FMCSA registration

Built only from dates in the sources above. Authority changes use FMCSA's own change date (yu5v-wbh6).

Changes observed by VAX monitoring

Loading…

07

FAQ

+What is STACK OPCO LLC's USDOT number?

USDOT 4087587, with docket(s) MC-1556450.

+Is STACK OPCO LLC active?

The census registration status code is A. This is a registration code only — it is not operating authority, insurance coverage or a safety certification.

+How many trucks and drivers does STACK OPCO LLC report?

36 power units and 21 drivers, self-reported on the MCS-150 filed 2026-08-27.

+Does STACK OPCO LLC have insurance on file?

1 filing row(s) matched in the FMCSA insurance dataset, most recently effective 2026-04-01 (Liberty Mutual Fire Insurance Company). A filing is not a certificate of insurance.

+Where is STACK OPCO LLC located?

Registered physical address: 1001 TECHNOLOGY DRIVE STE 1129 DOOR 22G, MT PLEASANT, PA, 15666, US. This is a registration address, not an operating area.

Answers are generated from the records on this page.

08

Nearby carriers

—

Sources

Each section shows its own fetch time; official data may have changed since. Official records plus an explainable trial record reference score (beta, not an official rating; no total when data is insufficient). No ranking, risk labels or load recommendations. Listing does not imply partnership, endorsement or platform access.