Verified Nov 2026
Other
·
St. Louis, Missouri
·
Since 1960
Spartech LLC makes engineered thermoplastic sheet, roll stock, specialty film laminates, and thermoformed packaging. It is headquartered in St. Louis, Missouri, and was founded in 1960. The company is publicly traded under the ticker SEH, employs between 200 and 500 people, and reports revenue in the 1.2 billion band. Its products serve automotive, electric-vehicle, electronics, construction, medical, and military-defense industries. In October 2026, Spartech announced an expansion of its Polycast acrylic manufacturing capacity to support aerospace demand.
Spartech LLC at a glance
Revenue
1.2B
Employees
200-500
Founded
1960
Headquarters
St. Louis, Missouri
Ownership
Publicly traded (NASDAQ: SEH)
Certifications
IATF 16949 · ISO 9001
Import activity
91
Industries
Automotive
Electric Vehicles
Electronics
Construction
Medical
Military & Defense
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
91
Named foreign suppliers
19
Top origins
Japan · Taiwan · Portugal · South Korea
Shared foreign counterparties do not establish that these companies buy from Spartech LLC.
What this tells a buyer
No customs shipment data is available for Spartech LLC, but the company reported in late 2025 that it would close an Indiana plant affecting 125 jobs.
Spartech holds IATF 16949 and ISO 9001 certifications and produces plastic products for industrial and specialty applications.
Spartech has been publicly traded since its listing under the ticker SEH and reported a March 2026 financial restructuring focused on high-growth markets.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & strong
66 years in operation (founded 1960).
Publicly listed; no distress event on record.
Holds IATF 16949, ISO 9001 certification(s) per public sources.
Overview
Spartech LLC makes engineered thermoplastic sheet, roll stock, specialty film laminates, and thermoformed packaging. It is headquartered in St. Louis, Missouri, and was founded in 1960. The company is publicly traded under the ticker SEH, employs between 200 and 500 people, and reports revenue in the 1.2 billion band. Its products serve automotive, electric-vehicle, electronics, construction, medical, and military-defense industries. In October 2026, Spartech announced an expansion of its Polycast acrylic manufacturing capacity to support aerospace demand.
At a glance
Attribute | Detail |
|---|---|
Founded | 1960 |
Headquarters | St. Louis, Missouri |
Employees | 200-500 |
Revenue | 1.2B |
Ownership | Publicly traded (NASDAQ: SEH) |
Certifications | IATF 16949 · ISO 9001 |
What Spartech LLC makes
Spartech holds IATF 16949 and ISO 9001 certifications and produces plastic products for industrial and specialty applications.
Products and capabilities described on the company's own site include Plastic (source: spartech.com).
Certifications
Spartech LLC is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
IATF 16949 — spartech.com
ISO 9001 — spartech.com
Trade and customs footprint
No customs shipment data is available for Spartech LLC, but the company reported in late 2025 that it would close an Indiana plant affecting 125 jobs. US customs bill-of-lading records list 91 inbound shipments across 19 foreign suppliers, with top origins including Japan · Taiwan · Portugal · South Korea.
Latest developments
2026-11-02 — Spartech Expands Aerospace Acrylic Manufacturing Capacity (generalaviationnews.com)
2026-10-29 — Spartech Expands Polycast® Acrylic Manufacturing Capacity to Support Growing Aerospace Demand (einpresswire.com)
2026-10-29 — Spartech—News Center (spartech.com)
2026-03-25 — Spartech Announces Strengthened Financials and Strategic Transformation Focused on High-Growth Markets (einpresswire.com)
2025-12-15 — Spartech to close Indiana plant; 125 jobs affected - Plastics News (plasticsnews.com)
2025-06-06 — Spartech Announces Comprehensive Refinancing Transaction (prnewswire.com)
Facilities
Spartech LLC is headquartered in St. Louis, Missouri. Public sources also reference these locations:
Paulding, Ohio — indianapublicradio.org
Company details
Spartech has been publicly traded since its listing under the ticker SEH and reported a March 2026 financial restructuring focused on high-growth markets. Spartech LLC was founded in 1960, has an estimated 200-500 employees, and is headquartered in St. Louis, Missouri. On the LightSource stability read it is rated "Established & strong": 66 years in operation (founded 1960). Publicly listed; no distress event on record. Holds IATF 16949, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Spartech LLC do?
Spartech LLC makes engineered thermoplastic sheet, roll stock, specialty film laminates, and thermoformed packaging. It is headquartered in St. Louis, Missouri, and was founded in 1960. The company is publicly traded under the ticker SEH, employs between 200 and 500 people, and reports revenue in the 1.2 billion band. Its products serve automotive, electric-vehicle, electronics, construction, medical, and military-defense industries. In October 2026, Spartech announced an expansion of its Polycast acrylic manufacturing capacity to support aerospace demand.
Where is Spartech LLC headquartered?
Spartech LLC is headquartered in St. Louis, Missouri (11650 Lakeside Crossing Ct, St. Louis, Missouri, 63146).
When was Spartech LLC founded?
Spartech LLC was founded in 1960.
How big is Spartech LLC?
Spartech LLC has an estimated 200-500 employees, with revenue in the 1.2B range.
Is Spartech LLC publicly traded?
Publicly traded (NASDAQ: SEH). Public financial figures are drawn from its filings.
What certifications does Spartech LLC hold?
Spartech LLC lists IATF 16949 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
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Last verified Nov 2026. Is this your company? Request a correction.
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