What Stillmeadow does

Stillmeadow, Inc. is a privately held, full-service contract research organization (CRO) laboratory founded in 1975 and headquartered in Sugar Land, Texas. The company provides GLP-compliant toxicology, drug development, animal health, entomology, environmental, and analytical chemistry testing services to sponsors developing pharmaceuticals, pesticides, biopesticides, animal health products, industrial chemicals, and environmental compliance programs. Its client base spans pharmaceutical companies, agricultural chemical firms, pet product manufacturers, chemical companies, environmental consulting firms, and government agencies, with services designed to support regulatory submissions under EPA, FDA, OECD, Japanese MAFF, FIFRA, TSCA, NPDES, and RCRA frameworks.

The company operates from a 75,000+ square foot integrated facility comprising three buildings, including a 5,000 sq ft analytical chemistry laboratory, a 7,000 sq ft aquatic toxicology facility, greenhouse and growth chamber infrastructure supporting 800+ plants across 10 species, and capabilities for mammalian, avian, honey bee, and entomology testing. The company holds AAALAC accreditation, NELAP certification, and JMAFF certification (since 1992), and its scientific staff includes PhD-credentialed study directors and board-certified toxicologists with prior experience at NIH, Procter & Gamble, and Array BioPharma.

Revenue is generated through project-based, custom-protocol contracts priced per study, with multi-year engagement cadence and direct sales-led client engagement. The company has not raised institutional funding, operates without a disclosed parent company, and is led by President Scott Sabol (appointed 2018) and VP of Operations Mark Holbert (with the company since 1986). No patents, M&A activity, public financials, or product launches beyond service-line extensions are disclosed.

Name

Stillmeadow

Legal name

STILLMEADOW, Inc.

Website

https://stillmeadow.com

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Contract Research Organization (CRO) Laboratory Services

NAICS

Testing Laboratories and Services (54138)

SIC

Services-Commercial Physical & Biological Research (8731), Services-Testing Laboratories (8734)

akta.pro primary industry

Toxicology & Safety Assessment CROs (GLP) (HLAGAAAC)

akta.pro secondary industries

Bioanalytical & Biomarker CROs (PK/PD/Immunogenicity) (HLAGAAAD), Veterinary Drug & Antibiotic Residue Testing (AFALAFAB), Environmental Monitoring & Cleanroom Testing (GMP) (HLAGADAL)

Keywords

• Contract research services
• GLP toxicology testing
• Preclinical drug development
• Analytical chemistry laboratory
• Environmental compliance testing

Headquarters

HQ city

Sugar Land

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Contract Research Services: STILLMEADOW generates revenue through providing contract research organization (CRO) laboratory services for toxicology testing, drug development, analytical chemistry, and environmental assessment. Services are project-based with custom protocols designed to meet each sponsor's specific needs. The company serves pharmaceutical, agricultural, chemical, and environmental clients requiring GLP-compliant testing for regulatory submissions.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

STILLMEADOW is a contract research organization (CRO) providing GLP-compliant laboratory testing services for drug development, mammalian toxicology, aquatic toxicology, environmental toxicology, avian toxicology, entomology, animal health, and analytical chemistry. Services are delivered as custom, project-based study programs supporting EPA, FDA, OECD, and Japanese MAFF regulatory submissions for pharmaceutical, agricultural chemical, biopesticide, animal health, and chemical manufacturers.

Product overview

STILLMEADOW, Inc. is a full-service Contract Research Organization (CRO) laboratory providing comprehensive testing services since 1975. The company operates an integrated 75,000+ sq ft facility offering drug development, mammalian toxicology, aquatic toxicology, environmental toxicology, entomology, avian toxicology, animal health, analytical/chemistry services, and biopesticide/MPCA testing. Services are delivered as GLP-compliant (EPA, FDA, OECD, MAFF) testing programs, with specialized offerings including Acute Toxicity 6-Packs, Honey Bee Toxicology, CPDA Adjuvant Certification, and Whole Effluent Toxicity (WET) testing. The modular service portfolio allows sponsors to access individual testing services or integrated programs supporting regulatory submissions for pharmaceuticals, pesticides, biopesticides, and environmental products.

Differentiator

Problem solved

Functional benefit

Products and services

• Drug Development Services Preclinical drug development services supporting FDA IND applications, including acute toxicity screening, subchronic studies, PK/ADME analysis, and dose range-finding studies using rodent and non-rodent species for pharmaceutical and biotechnology sponsors.
• Mammalian Toxicology Services Acute and subchronic mammalian toxicology testing for premanufacture notification, pesticide registration, labeling, and safe handling recommendations compliant with EPA OCSPP, OECD, FDA, and USEPA guidelines for chemical, agricultural, and pharmaceutical sponsors.
• Aquatic Toxicology Services GLP-compliant freshwater and saltwater aquatic toxicity testing including Daphnia, Mysidopsis bahia, and fish acute/chronic toxicity tests under EPA OCSPP and OECD guidelines for chemical, pesticide, and biopesticide sponsors.
• Environmental Toxicology Services Comprehensive environmental toxicology including aquatic toxicity, biodegradation, insect studies, plant studies, earthworm testing, and honey bee toxicology for ecological risk assessment under EPA and OECD guidelines.
• Entomology Testing Services Urban insect pest and medical/veterinary insect testing in laboratory and field settings, including repellency, efficacy, and contact or feeding studies using various pest species for pet care, agricultural, and public health sponsors.
• Microbial Pest Control Agent (MPCA) / Biopesticide Testing Biopesticide and MPCA testing including mammalian, avian, and aquatic toxicology, pathogenicity studies via oral, dermal, IV, and pulmonary routes, and non-target insect testing for biopesticide registrants.
• Avian Toxicology Services GLP non-target avian testing for microbials, biopesticides, and conventional chemicals using bobwhite quail and mallard duck via oral, inhalation, and dietary routes per EPA OCSPP guidelines.
• Animal Health Services GLP-compliant efficacy and safety testing for companion animals (flea, tick, heartworm) and farm animals (swine, sheep, cattle, horses, goats, chickens) including PK/Toxicokinetic studies for animal health product sponsors.
• Analytical Services / Chemistry Laboratory 5,000 sq ft chemistry laboratory providing physical and chemical property testing, HPLC, IC, LCMS, GC-FID, GC-MS analysis, method validation, storage stability, and corrosion characteristics per EPA and OECD GLP for chemical, agricultural, and pharmaceutical sponsors.
• Honey Bee Toxicology Services Honey bee (Apis mellifera) toxicology testing per EPA OCSPP and OECD guidelines for non-target oral and contact testing, including MPCA Tier I testing, acute oral, and acute contact toxicity tests conducted year-round.
• Acute Toxicity Testing (6-Packs) Acute mammalian toxicology '6-pack' testing including acute oral, dermal, inhalation, eye irritation, and dermal irritation studies following EPA 870 and OECD 400s guidelines for chemical and pesticide registrants.
• CPDA Adjuvant Certification CPDA voluntary adjuvant certification testing including acute oral, dermal, and eye irritation tests required for agricultural adjuvant product certification by the Council of Producers & Distributors of Agrotechnology.
• Whole Effluent Toxicity (WET) Testing Aquatic laboratory services for permit-regulated clients to assess toxicity of effluents, storm waters, or other surface waters for NPDES/TPDES compliance under the Clean Water Act.
• Avian Dietary Toxicology Services Specialized avian dietary toxicology testing per EPA OCSPP guidelines for assessing effects of test substances administered as part of diet to avian species for biopesticide and chemical registrants.
• Avian Inhalation Toxicology Services Avian inhalation toxicology testing per EPA OCSPP guideline 885.4100 for MPCA testing with chicks administered test substances via intratracheal installation for biopesticide registrants.

Quantifiable outcome

• Over 50 years of contract research experience since 1975
• +1 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered minor and core.

• Society of Quality AssuranceminorOthersProfessional organization membership for quality assurance professionals in toxicology and related fields. Key members of STILLMEADOW staff are members of this organization.
• Society of ToxicologyminorOthersProfessional toxicology organization. Key members of STILLMEADOW staff are members of this society.
• Council of Producers & Distributors of Agrotechnology (CPDA)minorOthersIndustry association for agricultural chemical producers and distributors. STILLMEADOW staff members participate in this organization and the company provides CPDA Adjuvant Certification testing.
• Association for Assessment and Accreditation of Laboratory Animal Care International (AAALAC)coreOthersInternational organization providing accreditation for animal care and use programs. STILLMEADOW holds AAALAC accreditation demonstrating commitment to ethical animal welfare standards.
• The NELAC InstitutecoreOthersNational environmental laboratory accreditation body. STILLMEADOW is certified under NELAP (National Environmental Laboratory Accreditation Program).
• Ministry of Agriculture, Forestry and Fisheries (Japan)coreOthersJapanese regulatory authority. STILLMEADOW was certified by JMAFF in 1992 for testing services supporting product registration in Japan.

Scale indicators7 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Charles River Laboratories: Largest preclinical CRO globally, with extensive GLP toxicology, aquatic, avian, and analytical services overlapping Stillmeadow's core offerings; serves similar pharmaceutical, ag-chem, and chemical sponsors but at vastly greater scale and global footprint.
• Eurofins Scientific: Global testing services conglomerate with a large environmental and agrochemical testing footprint; overlaps with Stillmeadow on NELAP-style environmental, residue, and ecotoxicology work for regulated industries.
• Pace Analytical: Large U.S. environmental and life sciences testing services network with NELAP-accredited environmental and ecotoxicology testing that overlaps with Stillmeadow's WET and environmental toxicology offerings.
• Covance (Labcorp): Global CRO (now under Labcorp) with broad preclinical toxicology, safety, and analytical services competing for the same pharmaceutical and ag-chem sponsor relationships that Stillmeadow serves.

Direct peers

• Smithers: Mid-sized contract research provider with GLP toxicology, environmental fate, ecotoxicology, and analytical chemistry services directly comparable to Stillmeadow's mammalian/aquatic/environmental testing portfolio.
• Product Safety Labs: GLP-compliant CRO focused on mammalian toxicology, regulatory toxicology, and analytical services for ag-chem, chemical, and consumer product clients — closely comparable niche positioning to Stillmeadow.
• EAG Laboratories: Contract analytical and testing laboratory offering GLP-grade chemistry, method validation, and materials/chemistry services used by ag-chem and pharma sponsors; directly comparable to Stillmeadow's analytical services line.
• WIL Research (Charles River): Preclinical toxicology and safety assessment CRO (now part of Charles River) that historically served ag-chem and chemical registrants with mammalian, ecotox, and analytical services in the same niche as Stillmeadow.
• Ricerca Biosciences: Preclinical CRO with GLP toxicology, ecotoxicology, and chemistry services targeted at ag-chem and pharmaceutical registrants; historical mid-sized competitor in Stillmeadow's same service category.

Regional players

• ITR Laboratories Canada: Canadian preclinical CRO offering GLP mammalian toxicology, reproductive tox, and analytical services for pharma and ag-chem clients; comparable service mix to Stillmeadow but operating from a different geography.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stillmeadow