Memc Soi

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
MSMemc Soi	St. Peters	Semiconductor and Related Device Manufacturing 334413	◐ LIKELY ACTIVE	0.0 KM
MLMemc Llc-st. Peters Plant	St Peters	Semiconductor and Related Device Manufacturing 334413	◇ UNVERIFIED	0.2 KM
MEMemc Electronic Materials INC	O Fallon	Semiconductor and Related Device Manufacturing 334413	◐ LIKELY ACTIVE	0.5 KM
Rpmc Lasers INC.	O Fallon	Semiconductor and Related Device Manufacturing 334413	● ACTIVE	3.7 KM
Fin-con Assembly Group, INC.	O Fallon	Other Communication and Energy Wire Manufacturing 335929	◐ LIKELY ACTIVE	6.0 KM

Every listed plant in St. Charles County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 3 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.

• OSHA injury and illness reportsOPERATING
  Record 73446 · first seen DEC 2025 · last seen DEC 2025
• DOL Form 5500 retirement plan filingsOPERATING
  Record 463556980|MO|63376|501 pearl dr · first seen DEC 2024 · last seen DEC 2024

IN ST. CHARLES COUNTY10 other plants share this one’s industry (Semiconductor and Other Electronic Component Manufacturing, NAICS 3344); 2 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.

Coordinates

Census geocoder: 38.818704710549,-90.659042422782 · JUL 2026

Employees (band)

OSHA: 100-499 · DEC 2025

Retirement plan filing (Form 5500)

DOL: 264 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024