Four Star Mushrooms
Four Star Mushrooms, founded in 2019 in Chicago's West Town, is a bootstrapped indoor urban farm producing seven specialty mushroom varieties year-round for Chicago restaurants, 200+ retail stores including Jewel-Osco, and a $15/year direct-to-consumer Mushroom Club membership.
- Company typePrivate
- Founded2019
- HeadquartersChicago, United States
- Headcount1–10
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Four Star Mushrooms does
Four Star Mushrooms is a privately held, bootstrapped Chicago urban farm founded in 2019 by co-founders Sean DiGioia (biology and ecosystems background) and Joe Weber (corporate finance and operations background). The company operates a Controlled Environment Agriculture facility at 320 N Oakley Blvd in the West Town neighborhood, where it cultivates seven premium specialty mushroom varieties - Blue Oyster, Lion's Mane, Chestnut, Black Oyster, King Trumpet, Golden Enoki, and Maitake - year-round in precision climate-controlled grow rooms. Each variety runs on a custom substrate formulation built from agricultural byproducts (hardwood sawdust and soy hulls), executed under the proprietary STAR System, a closed-loop process that runs agricultural waste inputs through substrate preparation, fruiting chambers, and soil regeneration via spent-substrate amendment.
The company generates revenue through three primary channels: B2B wholesale mushroom sales to 50+ Chicago restaurants under weekly ordering cadence with Net 15 terms and same-day or next-day delivery; retail grocery distribution across more than 200 Chicagoland stores including 189+ Jewel-Osco locations, Mariano's, Fresh Thyme, and Agora Market; and the Mushroom Club, a $15/year direct-to-consumer membership providing wholesale-style case access, build-your-own packs, Club-exclusive wild and foraged seasonal varieties, free spent substrate, and member events. Ancillary revenue comes from farmers market sales at Green City Market in Lincoln Park.
Distribution advantage is the core commercial asset: harvest-to-shelf in 24-48 hours versus days-to-weeks for shipped competitors. The customer base is anchored by Michelin-recognized and high-volume Chicago fine dining accounts (Smyth, BOKA, Lula Cafe, North Pond, Gibson's Italia, The Dearborn, Avec), a major Midwestern grocery partner (Jewel-Osco at 189+ stores), and a growing direct-to-consumer installed base via the Mushroom Club. The business is operationally self-funded with no institutional capital disclosed in the source data.
Four Star Mushrooms firmographics
Firmographics- Name
- Four Star Mushrooms
- Legal name
- Four Star Mushrooms
- Website
- https://fourstarmushrooms.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Four Star Mushrooms, founded in 2019 in Chicago's West Town, is a bootstrapped indoor urban farm producing seven specialty mushroom varieties year-round for Chicago restaurants, 200+ retail stores including Jewel-Osco, and a $15/year direct-to-consumer Mushroom Club membership.
- Ownership category
- akta.pro rank
Four Star Mushrooms industry classification
Industry- Product category
- Specialty Mushroom Farming
- NAICS
- Mushroom Production (111411)
- akta.pro primary industry
- Mushroom Farming (Button, Oyster, Shiitake) (AFAGADAJ)
- akta.pro secondary industries
- Mushroom & Fungi Production (Indoor/Protected) (AFAGAHAK), Wild & Cultivated Mushroom Foraging and Production (AFAMAFAD)
Keywords
Where Four Star Mushrooms is headquartered
LocationHeadquarters
- HQ city
- Chicago
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Four Star Mushrooms business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales, Technology or R&D
Revenue model
- Wholesale Mushroom Sales to Restaurants: Premium specialty mushrooms sold directly to Chicago restaurants and chefs through wholesale accounts. Weekly ordering with reliable delivery. Net 15 payment terms. Chefs can request a free mixed case to start.
- Retail Grocery Distribution: Fresh mushrooms sold through retail partners including Jewel-Osco (189+ locations), Mariano's, Fresh Thyme, Agora Market, and 200+ stores across Chicagoland. Products include single-variety boxes and medley packs.
- Mushroom Club Membership: $15/year subscription giving members access to wholesale cases, build-your-own 6-packs, exclusive wild and foraged seasonal mushrooms, free spent substrate pickup, member events, and rewards points.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Mushroom Club annual membership for food enthusiasts |
| Transaction based/ take rate | Pay-as-you-go | Wholesale restaurant account pricing |
Go-to-market motion2 records
Distribution channels7 records
Marketing channels8 records
Four Star Mushrooms product offering
Product offeringCore offering
Four Star Mushrooms operates an indoor urban farm in Chicago's West Town neighborhood that grows seven varieties of premium specialty mushrooms year-round in precision climate-controlled grow rooms. The company supplies these mushrooms to Chicago restaurants and chefs via direct wholesale, distributes through 200+ retail grocery locations including Jewel-Osco, Mariano's, and Fresh Thyme, and sells direct to home cooks through the annual Mushroom Club subscription.
Product overview
Four Star Mushrooms is a Chicago urban farm specializing in seven premium specialty mushroom varieties grown year-round in climate-controlled facilities. The core product portfolio includes Blue Oyster, Lion's Mane, Chestnut, Black Oyster, King Trumpet, Golden Enoki, and Maitake mushrooms, sold as single-variety boxes or mixed Medley packs. Beyond fresh mushroom products, the company offers a Mushroom Club subscription providing restaurant-style access including wholesale cases, build-your-own packs, exclusive wild and foraged seasonal varieties, and free spent substrate for gardeners. Commercial offerings include B2B wholesale supply for restaurants and chefs with weekly ordering and local delivery. The company also provides wild and foraged mushrooms (morels, hedgehog, truffles, chanterelles) exclusively through the Mushroom Club membership.
Differentiator
Problem solved
Functional benefit
Brands
- The Mushroom Club: A membership program offering restaurant-style access to home cooks, including wholesale cases, build-your-own 6-packs, wild and foraged seasonal mushrooms, free spent substrate, member events, and rewards. Annual membership for Chicago food lovers.
Products and services
- Blue Oyster Mushrooms Premium specialty mushroom variety with thick-capped, meaty texture and mild, slightly sweet flavor, suited for searing, roasting, and high-heat cooking. Sold to chefs, retail grocers, and Mushroom Club members.
- Lion's Mane Mushrooms Premium specialty mushroom with unique shaggy appearance and seafood-like taste reminiscent of crab or lobster; known for cognitive health benefits and dense, meaty texture when cooked.
- Chestnut Mushrooms Premium specialty mushroom with firm texture and rich, nutty flavor that intensifies when cooked; holds up well through roasting, braising, and long-cooked sauces.
- Black Oyster Mushrooms Bold, thick-capped specialty mushroom with robust, savory flavor built to withstand high-heat cooking methods like grilling and roasting without falling apart.
- King Trumpet Mushrooms Architecturally dramatic specialty mushroom with thick, dense stems that slice into medallions and sear like steak; mild flavor that absorbs bold seasonings.
- Golden Enoki Mushrooms Delicate clusters with mild, fruity flavor and gentle crunch; usable raw in salads or cooked in soups and hot pot. Available exclusively through the Mushroom Club.
- Maitake Mushrooms Frilly, layered specialty mushroom with intense earthy aroma and deep umami flavor that roasts into crispy edges with rich, brothy savoriness. Available exclusively through the Mushroom Club.
- Mushroom Medley Mixed variety pack containing a rotating cross-section of Four Star mushroom varieties, typically including blue oyster, lion's mane, chestnut, king trumpet, and black oyster.
- Mushroom Club Annual membership program at $15/year providing home cooks and food enthusiasts with restaurant-style access to specialty mushrooms, including wholesale cases, build-your-own 6-packs, exclusive wild and foraged varieties, free spent substrate, member events, and rewards.
- Wholesale Mushrooms for Restaurants B2B wholesale supply program for restaurants and culinary teams offering consistent premium mushrooms with weekly ordering, reliable Chicagoland delivery, Net 15 payment terms, free first mixed case for new accounts, and chef-first support.
- Wild & Foraged Mushrooms Seasonal wild mushrooms sourced from trusted foragers, including morels, hedgehog mushrooms, black truffles, white truffles, and chanterelles, available exclusively to Mushroom Club members.
- Spent Mushroom Substrate Nutrient-rich spent growing medium provided free to Mushroom Club members for use as garden soil amendment; rich in beneficial microbes and organic matter.
Quantifiable outcome
- 10x more yield per square foot than conventional mushroom farming
- +2 more outcomes
Companies that use Four Star Mushrooms
Customer profileNamed customers7 records
Segments3 records
Ideal customer profiles3 records
Four Star Mushrooms technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Four Star Mushrooms partnerships and signals
Strategic signalScale indicators6 records
Recent moves6 records
Expansion highlights6 records
Four Star Mushrooms competitors and assessment
Company assessmentDirect peers
- Smallhold: NYC- and Austin-based indoor specialty mushroom farm operating a distributed network of climate-controlled MAC (Miniature Automated Cultivation) rooms. Most directly comparable to Four Star's urban indoor CEA model, with a similar chef/retail D2C distribution strategy.
- Far West Fungi: California-based specialty mushroom farm selling to restaurants, farmers markets, and grocery retailers, including its own retail store. Comparable in product variety, wholesale + retail dual-channel distribution, and farm-direct brand identity.
- Cascadia Mushrooms: Pacific Northwest specialty mushroom farm producing multiple gourmet varieties for chefs, grocers, and home consumers. Comparable business model in specialty varietals, chef/wholesale customer base, and branded retail packaging.
- Hudson Valley Mushrooms: New York-based specialty mushroom grower serving NYC chefs and retail channels. Comparable in B2B wholesale to restaurants and emphasis on freshness/sustainability as core value proposition.
- Green Mountain Mushrooms: Vermont-based specialty mushroom farm supplying restaurants, farmers markets, and CSA-style home delivery. Comparable small-scale specialty mushroom producer with a regional chef-and-D2C distribution model analogous to Four Star's Chicago footprint.
Broad incumbents
- Phillips Mushroom Farms: One of the largest US specialty and conventional mushroom producers, supplying foodservice distributors and major grocery chains nationally. Represents the broad-incumbent competitive threat as it expands specialty varietals to capture the same premium shelf space Four Star occupies.
- South Mill Mushrooms: Large East Coast mushroom grower and distributor serving retail and foodservice with both conventional and specialty varieties. Comparable in product breadth and grocery-channel reach; represents scaled competition.
- Monterey Mushrooms: Largest US fresh mushroom grower with national distribution across all major retail channels. Broad-incumbent competitor whose scale and retail relationships could pressure Four Star's shelf economics if it expands specialty varietals.
Emerging players
- MyForest Foods: Upstate NY-based mycelium food company producing whole-cut mushroom-based meat alternatives (MyBacon). Adjacent emerging player in the mushroom category that could draw the same Lion's Mane/health positioning into a CPG adjacency.
- Fungi Perfecti: Washington-based founder-led company selling mushroom growing kits, supplements, and wellness products. Adjacent in the specialty mushroom brand space, particularly relevant if Four Star extends into Lion's Mane health/supplement SKUs.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Four Star Mushrooms social profiles
Digital presenceFour Star Mushrooms financial estimates
Financial estimateRevenue estimate
Valuation estimate
Four Star Mushrooms leadership team
Management profileNumber of profiles
Profiles2 records
Four Star Mushrooms funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Four Star Mushrooms M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Four Star Mushrooms
What does Four Star Mushrooms do?
Four Star Mushrooms operates an indoor urban farm in Chicago's West Town neighborhood that grows seven varieties of premium specialty mushrooms year-round in precision climate-controlled grow rooms. The company supplies these mushrooms to Chicago restaurants and chefs via direct wholesale, distributes through 200+ retail grocery locations including Jewel-Osco, Mariano's, and Fresh Thyme, and sells direct to home cooks through the annual Mushroom Club subscription.
Is Four Star Mushrooms a public or private company?
Four Star Mushrooms is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Four Star Mushrooms founded?
Four Star Mushrooms was founded in 2019. It employs 1 to 10 people.
Where is Four Star Mushrooms based?
Four Star Mushrooms is headquartered in Chicago, United States, in the North America region.
How does Four Star Mushrooms make money?
Three revenue lines are on record. Wholesale Mushroom Sales to Restaurants are the primary driver. The others are retail Grocery Distribution and mushroom Club Membership.
Who are Four Star Mushrooms's main competitors?
Direct peers on record are Smallhold, Far West Fungi, Cascadia Mushrooms, Hudson Valley Mushrooms and Green Mountain Mushrooms. Broad incumbents are Phillips Mushroom Farms, South Mill Mushrooms and Monterey Mushrooms. Emerging players are MyForest Foods and Fungi Perfecti.
Does Four Star Mushrooms have an API?
No public API is recorded for Four Star Mushrooms.
What industry is Four Star Mushrooms in?
Four Star Mushrooms's product category is Specialty Mushroom Farming. Its primary akta.pro industry code is AFAGADAJ, Mushroom Farming (Button, Oyster, Shiitake), with a secondary code of AFAGAHAK, Mushroom & Fungi Production (Indoor/Protected). Its NAICS code is 111411.