Siemer Milling Company

What Siemer Milling Company does

Siemer Milling Company is a privately held, family and employee-owned flour milling company founded in 1882 in Teutopolis, Illinois. The company operates three flour mills—Teutopolis, IL; Hopkinsville, KY; and West Harrison, IN—with combined daily production capacity of approximately 36,000 cwts of flour plus 700 tons of wheat-based co-products, making it the 9th-10th largest flour miller in the United States. Siemer Milling specializes in soft red winter wheat and offers bakery flours, all-purpose, cake, bread, and whole wheat flours, custom blends, co-products (wheat bran, wheat germ, midds, reddog), an industrial product line (Glu-X) for plywood adhesive applications, and a heat-treated specialty ingredients business. The company was the first in the U.S. to produce heat-treated, low-micro flour and co-products, with these specialty ingredients exported to the UK, Brazil, and South Africa.

The company's technology stack centers on Bühler roller mill equipment and a multi-step milling process (cleaning, tempering, roller grinding, separation, blending, packaging) supported by an in-house testing laboratory and a dedicated Technical Center opened in 2017 that includes a wheat test-milling facility and test kitchen. Grower-side technology includes a Bushel-powered mobile app for real-time cash bids, scale tickets, contracts, and settlements, plus CompuWeigh RFID smart truck self-check-in at Teutopolis. All three facilities carry BRC Global, Kosher U-Parve, and HACCP-based food safety certifications.

Siemer generates revenue primarily through B2B wholesale sales of wheat flour and co-products to food processors, commercial bakeries, CPG food manufacturers (including McDonald's, Nestle, KFC, Duncan Hines, and Krusteaz), ingredient suppliers, animal food producers, and industrial users. The company purchases 25-26 million bushels of locally grown wheat annually (over $200 million paid to farmers and merchandisers each year), distributing finished product through direct sales with packaging in 50 lb bags, 2,000 lb totes, bulk tankers, and rail cars. Ownership is split between the Siemer family and an Employee Stock Ownership Plan (ESOP) created in 2000, with employees holding over 30% of the business. Recent leadership transitioned in August 2025 when sixth-generation Henry R. Siemer was elected President and Richard C. Siemer became Executive Chairman.

Name

Siemer Milling Company

Legal name

Siemer Milling Company

Website

https://siemermilling.com

Company type

Private

Founded year

1882

Operating status

Operating

Headcount range

101–250 employees

Short description

Siemer Milling Company, founded in 1882 and family/employee-owned (ESOP), is a U.S. soft red winter wheat flour miller operating three mills (IL, KY, IN) with ~36,000 cwts/day capacity, supplying bakery flours, heat-treated specialty ingredients, and wheat co-products to food manufacturers, bakers, CPG brands, and industrial customers.

Ownership category

akta.pro rank

Product category

Flour Milling

NAICS

Grain and Oilseed Milling (3112), Food Manufacturing (311)

SIC

Grain Mill Products (2040)

akta.pro primary industry

Flour & Milling Products Manufacturing (wheat, corn, rice, specialty flours) (AFAKABAD)

Keywords

• Wheat flour milling
• Commercial bakery flour
• Heat treated flour
• Wheat co-products
• Soft red winter wheat

Headquarters

HQ city

Teutopolis

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Wheat Flour Sales: Primary revenue stream from milling and selling wheat flour to commercial bakers, food manufacturers, and ingredient suppliers. Products include soft wheat flour, hard wheat flour, all-purpose flour, and whole wheat flour.
2. Wheat Co-Products: Sale of wheat bran (fine and coarse), wheat germ, wheat midds, and wheat reddog for animal food, pet food, and industrial applications.
3. Heat-Treated Specialty Ingredients: Heat-treated functional flours and specialty ingredients sold domestically and internationally (UK, Brazil, South Africa) for clean-label applications.
4. Extender/Divider Products: Non-food-grade flour products for construction industry applications, such as adhesive ingredients for plywood manufacturing.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Siemer Milling Company mills soft red winter wheat into bakery flours (all-purpose, cake, bread, and whole wheat), heat-treated functional flours, custom blended flour solutions, and wheat co-products (bran, germ, midds, reddog) for food processors, commercial bakeries, CPG food manufacturers, and ingredient distributors. The company also produces the Glu-X industrial-grade flour line for non-food applications such as plywood adhesives and supplies animal-food co-products for pet food and livestock feed.

Product overview

Siemer Milling Company is a flour milling company offering a comprehensive portfolio of wheat-based products. The core offerings include Bakery Flours (diverse line for commercial bakers), Heat Treated Flour (functional flours for clean label applications), Custom Blends (tailored solutions), and Co-Products (Wheat Bran, Wheat Germ, Midds, Reddog). Specific flour types include All-Purpose, Cake, Bread, and Whole Wheat flours. The company also produces industrial-grade Glu-X for adhesive applications. These products serve various customer segments including food processors, commercial bakers, CPG manufacturers, ingredient suppliers, and animal food producers across the United States.

Differentiator

Problem solved

Functional benefit

Brands

• Siemer Specialty Ingredients: Heat-treated flour and co-products division offering functionally enhanced wheat products for clean-label and food safety applications
• Glu-X

Products and services

• Bakery Flours Diverse line of flours for commercial bakers and food manufacturers, including soft wheat flour for tender baked goods, milled from soft red winter wheat at Siemer's three U.S. mills.
• All-Purpose Flour Balanced protein flour (8-11%) milled from a blend of hard and soft wheat for versatile commercial baking needs including cookies, muffins, crackers, and pancakes.
• Cake Flour Low-protein flour (6.5-8%) made from soft wheat for tender, delicate crumb in cakes, cupcakes, pastries, and biscuits.
• Bread Flour High-protein flour (10-12%) milled from hard wheat for strong gluten development in yeast breads, pizza crusts, bagels, and pretzels.
• Whole Wheat Flour Nutrient-rich flour containing all parts of the wheat kernel (bran, germ, endosperm) for whole grain breads, granola bars, and health-focused snacks.
• Heat-Treated Flour Heat-treated functional flours designed for clean label and food safety applications, including non-chlorinated options, sold domestically and exported to UK, Brazil, and South Africa.
• Custom Blends Tailored flour solutions customized to meet unique customer specifications for absorption, color, shelf life, and functional requirements, developed in Siemer's test kitchen.
• Co-Products (Wheat Bran, Wheat Germ, Midds, Reddog) Wheat co-products including bran (fiber-rich, coarse and fine grind), wheat germ, midds (cost-effective blend), and reddog (floury co-product with pellet-binding benefits).
• Animal Food Co-Products Consistent, nutrient-rich wheat co-products for pet food, livestock, and equine feed producers including wheat bran, midds, and reddog.
• Glu-X Industrial application product line for non-food uses, supplying flour as adhesive ingredients for plywood manufacturing and similar construction applications.

Quantifiable outcome

• Heat-treated flour production capability
• +2 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles7 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• University of IllinoiscoreStrategic or Co-development Partner · 1 June 2025$1 million pledge to launch wheat research programs at University of Illinois Urbana-Champaign, supporting Dr. Jessica Rutkoski's wheat breeding research. Partnership aims to make winter wheat more profitable for Midwest farmers and promote cropping system diversity.
• Brock ManufacturingminorOthers · 1 January 2021Manufactured two 600,000 bushel steel bins (90 ft diameter x 130 ft tall) for West Harrison wheat storage expansion.
• G.C. Unverfehrt Farm SupplyminorOthers · 1 January 2021Principal contractor for West Harrison wheat storage expansion project.
• University of KentuckycoreStrategic or Co-development Partner · 1 January 2019Siemer Milling donated $1 million to the UK Grain and Forage Center of Excellence in five annual installments of $200,000. The center is located 40 miles from Siemer's Hopkinsville mill. A conference center within the facility was named the 'Siemer Milling Company Conference Center'. The partnership supports wheat research and improvement programs.
• Buhler CorporationcoreTechnology or Integration · 1 January 1882Longstanding technology partnership with Swiss company Buhler Corporation. Siemer Milling frequently works with Buhler to be first in U.S. to install latest advancements in milling equipment for soft wheat flour production.

Scale indicators9 records

Recent moves14 records

Expansion highlights4 records

Direct peers

• Ardent Mills: Largest U.S. flour miller (joint venture of Cargill, CHS, and ConAgra Brands) operating ~40 facilities across North America. Directly competes with Siemer for the same commercial bakery, CPG, and QSR flour customers at a much larger scale (~10x milling capacity).
• Bay State Milling Company: Family-owned U.S. flour miller producing a similar portfolio of wheat flours, whole grains, and specialty ingredients for commercial bakers and food manufacturers. Most directly comparable mid-sized private competitor to Siemer.
• Mennel Milling Company: Sixth-generation family-owned flour miller (founded 1886) with multiple mills across Ohio, Michigan, Virginia, and North Carolina producing soft and hard wheat flours for bakery and food customers. Closest peer on family ownership, geography, and product mix.
• King Arthur Flour: Employee-owned specialty flour brand and miller (Norwich, VT) producing premium and organic flours for retail and foodservice. Directly competes for specialty/clean-label bakery flour business, though stronger consumer brand presence than Siemer.
• Bob's Red Mill Natural Foods: Specialty whole-grain miller producing flours including whole wheat, gluten-free, and ancient grains for retail and foodservice. Overlaps with Siemer in specialty/whole wheat flour segments, though primarily retail-distributed.

Broad incumbents

• Archer Daniels Midland (ADM): Global agribusiness major with a sizable North American flour milling business (plus a vast grain, oilseed, and nutrition ingredients portfolio). Overlaps with Siemer on wheat origination and flour milling but operates at far greater scale and breadth.
• Cargill: Global grain, food ingredient, and animal nutrition major with significant U.S. flour milling capacity. Indirect competitor through Ardent Mills JV and broader ingredient supply to Siemer's same enterprise customers.
• General Mills: Major branded consumer foods company (Gold Medal, Pillsbury) that both operates flour milling and competes for shelf space with Siemer's CPG customers. Overlaps in bakery flour supply chain but from a brand-owner/marketer perspective.

Emerging players

• Hayden Flour Mills: Arizona-based specialty miller focused on identity-preserved heritage wheats for artisan bakeries. Emerging overlap with Siemer's heat-treated/clean-label flour positioning in the specialty/functional segment.

Regional players

• Hodgson Mill: Family-owned Illinois-based specialty flour and whole-grain miller selling primarily direct-to-consumer and regional foodservice. Regional overlap with Siemer in Midwest specialty/whole grain flour, though far smaller scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Siemer Milling Company