Cornerstone Composites INC

900 E Vienna Ave, Milwaukee, WI 53212

ACTIVELAST SEEN IN FEDERAL DATA OCT 2026 · 5 SOURCES

Operating signal within 12 months from two or more independent sources.

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Their homepage, crawled JUL 2026

What they make

All Other Plastics Product Manufacturing326199

custom-molded parts
assemblies
molding
CNC machining
heat treating
painting
tooling
OEMS
tool room
machining equipment
complete assembly services

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

CAREERS

Careers page — seen SEP 8, 2026

CERTIFICATIONS — LISTED ON THE COMPANY’S WEBSITE

AS9100

Read from this company’s own website on August 9, 2026. Nobody at the facility has confirmed it here, and FactoryRegistry has not verified these — unlike operating status, which comes from independent public records. A certificate can lapse without the website changing, so ask the facility for current ones.

Where it is

43.08586, -87.89938 · CENSUS TIGER

COUNTY

Milwaukee County

METRO AREA

Milwaukee-Waukesha, WI

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STREET VIEW

Open street-level view — DEC 2025

Other plants nearby

Facility	City	Industry	Status	Distance
Tulip Richardson Manufacturing	Milwaukee	All Other Plastics Product Manufacturing 326199	LIKELY ACTIVE	0.5 KM
Xela Innovations LLC	Milwaukee	Pottery, Ceramics, and Plumbing Fixture Manufacturing 327110	ACTIVE	1.4 KM
Rock Tenn Converting Company	Milwaukee	Folding Paperboard Box Manufacturing 322212	UNVERIFIED	3.2 KM
Brady Worldwide - Florist Ave Plt	Glendale	Converted Paper Product Manufacturing 322200	LIKELY ACTIVE	5.6 KM
Gossen CORP	Milwaukee	Unlaminated Plastics Profile Shape Manufacturing 326121	UNVERIFIED	5.9 KM

Every listed plant in Milwaukee County

Also at this address

No other federal record shares this street address.

Where this record comes from

5 sources hold this plant, and 11 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record M9Z1W8GWWHK5 · first seen FEB 2026 · last seen OCT 2026
OSHA injury and illness reportsOPERATING
Record 752181 · first seen DEC 2025 · last seen DEC 2025
DOL Form 5500 retirement plan filingsOPERATING
Record 263418050|WI|53212|900 e vienna ave · first seen DEC 2024 · last seen DEC 2024
SBA 7(a) and 504 loan recordsEXISTENCE
first seen SEP 2014 · last seen SEP 2014

IN MILWAUKEE COUNTY39 other plants share this one’s industry (Plastics Product Manufacturing, NAICS 3261); 24 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: SAM.gov: CORNERSTONE COMPOSITES INC
Street address: SAM.gov: 900 E VIENNA AVE
City: SAM.gov: MILWAUKEE
State: SAM.gov: WI
Coordinates: Census geocoder: 43.085857254116,-87.899383093354 · JUL 2026
Employees (band): OSHA: 20-99 · DEC 2025
Website: SAM.gov: www.cornerstonecomposites.com
CAGE code: SAM.gov: 9AL68
Retirement plan filing (Form 5500): DOL: 46 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
SAM registration expires: SAM.gov: 2027-01-30
SBA loans: SBA: 7a loan x4, jobs 46.0 · SEP 2014

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