Mallinckrodt Pharmaceuticals
pharma Bedminster, NJ · Private
Mallinckrodt Pharmaceuticals is a specialty pharma company with significant manufacturing footprint across 8 US facilities focused on rare diseases and critical care therapies. The company recently underwent structural changes following its 2025 merger with Endo, with legacy operations continuing under the Keenova Therapeutics umbrella.
Mallinckrodt Pharmaceuticals is a specialty pharmaceutical company focused on developing, manufacturing, and commercializing branded therapeutics for rare and underaddressed conditions, including autoimmune diseases and critical care therapies. Following its 2025 merger with Endo and subsequent rebranding as Keenova Therapeutics, the legacy Mallinckrodt entity continues as a standalone specialty therapeutics business headquartered in Dublin, Ireland with significant US operations.
Employees
2,800
Mfg Plants
7
All Facilities
8
Activity
2/10
Type
Private
Plant Locations (8 mapped)
0
Recent News
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Manufacturing Plants (7)
Mallinckrodt Greenville Plant
Greenville, IL
Manufacturing and distribution center; specialty chemicals and pharmaceutical manufacturing; known historically as Mallinckrodt Specialty Chemical
Mallinckrodt Port Allen Manufacturing Facility
Port Allen, LA
Manufacturing and distribution facility; part of the legacy Mallinckrodt/Keenova US manufacturing footprint retained post Par Health spin-off
Mallinckrodt Fenton Manufacturing Facility
Fenton, MO
75,000 sq ft solid dose and liquid pharmaceutical manufacturing facility; located near St. Louis Lambert International Airport
Mallinckrodt St. Louis Manufacturing Plant (SpecGx)
St. Louis, MO
Historic flagship manufacturing site established 1867; produces active pharmaceutical ingredients including opioids and controlled substances; now operated as SpecGx LLC
Mallinckrodt Raleigh Pharmaceuticals Plant
Raleigh, NC
Manufactures acetaminophen API (active pharmaceutical ingredient); also produces para-aminophenol used in acetaminophen synthesis; major API production site
Mallinckrodt Hobart NY Manufacturing Facility
Hobart, NY
Manufactures oral solid-dose and liquid pharmaceutical products; provides contract manufacturing and clinical trial materials; generic controlled substances finished dosage forms
Mallinckrodt Madison Manufacturing Facility (Stratatech/StrataGraft)
Madison, WI
Manufactures StrataGraft regenerative skin tissue; 35,000 sq ft sterile manufacturing environment; acquired via Stratatech acquisition; part of Keenova manufacturing footprint post-reorganization
Other Facilities (1)
Mallinckrodt US Headquarters (Specialty Brands)
Bedminster, NJ · hq
Primary US operational headquarters for Specialty Brands division; ~500 employees supporting hospital therapies and autoimmune/rare disease businesses