The iO Theater

What The iO Theater does

The iO Theater is a Chicago-based live comedy institution and training center founded in 1981, operating from a 30,000 sq ft Lincoln Park venue (1501 N Kingsbury St) containing eight configurable event spaces with a full buyout capacity of roughly 1,000. It produces improv, sketch, and stand-up shows six nights a week across multiple stages, anchored by a house team system that draws from its own training pipeline. The theater is the documented birthplace of The Harold, a longform improvisation format developed by Del Close and Charna Halpern that is now performed and taught worldwide.

The iO business runs on a five-level, year-long improv curriculum (plus sketch comedy, music improv, and stand-up tracks), seasonal one-week intensives, a five-week Summer Intensive ($1,800), teen and youth programs, and an online offering (ComedyLab). Corporate training is delivered under the iO@Work brand, covering professional development workshops, team building, and custom event entertainment, with clients including Sprout Social, NFP (an Aon company), BitBash, and Disability Lead. The venue also operates as a full-service event rental business with in-house catering, bar service, and AV, generating additional revenue streams from food and beverage, festival ticket sales (iO Fest, The Fest, Fraudway, Devil Fest, Thawed Out), and a growing slate of branded festivals.

Revenue is diversified across ticket sales, recurring class tuition, corporate workshop fees, event space rentals, food and beverage, and festival passes, distributed via on-site box office, two third-party platforms (Crowdwork, Fourth Wall), and direct enterprise sales for events and iO@Work. Marketing combines organic social, earned media across major Chicago outlets, email, and event-driven demand around iO Fest. The company is privately held by Larry Weiner and Scott Gendell, who acquired it from founder Charna Halpern in 2022 after a COVID-19-driven closure in 2020; it is unencumbered by outside venture capital or debt disclosure.

Name

The iO Theater

Legal name

iO Theater Chicago

Website

https://ioimprov.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

101–250 employees

Short description

The iO Theater is a Chicago live comedy venue and training center founded in 1981, producing improv, sketch, and stand-up shows nightly while running a five-level improv curriculum, corporate training (iO@Work), event space rentals, and an annual festival portfolio including iO Fest.

Ownership category

akta.pro rank

Product category

Live Comedy Theater and Improv Training

NAICS

Performing Arts Companies (7111), Fine Arts Schools (61161), Professional and Management Development Training (61143)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Performing Arts (Acting, Improv, Theater) (EDAAAGAE)

akta.pro secondary industry

Theater & Drama Education (Acting, Improvisation, Musical Theater) (EDAMAAAG)

Keywords

• Live comedy performances
• Improv comedy training
• Corporate team building
• Event venue rental
• Comedy festival events

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure, Supply Chain

Revenue model

1. Live Comedy Show Tickets: Ticket sales for improv, sketch, and stand-up shows across multiple stages. Multiple price points available. Shows run six nights a week with various price tiers.
2. Improv Training Classes: Year-long five-level improv program (Levels 1-5), sketch comedy program, music improv program, and specialty workshops. Classes are 8-week sessions meeting once weekly for 3 hours. Summer Intensive: 5-week, 4-day/week, 6-hour/day program at $1,800.
3. Event Space Rentals: Rental of 30,000 sq ft venue across eight distinct rooms for private events, corporate events, meetings, conferences. Full venue capacity ~1,000. In-house catering and bar services.
4. Corporate Training (iO@Work): Professional development workshops and team building programs using applied improv. Customized for sales, leadership, HR, client-facing teams. Can be delivered on-site or at theater.
5. Food and Beverage: Full bar service and kitchen open before, during, and after shows. Bar and kitchen open Wed-Sun with varying hours. Full menu including appetizers, tacos, pizza, sandwiches, salads, and craft cocktails.
6. Festival Tickets: iO Fest 2026 four-day passes and individual show tickets. Over 135 acts, 11 headliners. Previous years had over 1,000 daily visitors.

Pricing tiers

Go-to-market motion4 records

Distribution channels7 records

Marketing channels9 records

Core offering

The iO Theater is a Chicago comedy venue and training center operating a 30,000 sq ft facility with eight configurable rooms. It produces live improv, sketch, and stand-up shows six nights a week, runs a five-level longform improv Training Center program, Summer Intensives, teen/youth classes, and online ComedyLab writing classes. It also sells corporate training (iO@Work), rents event space for private and corporate events, and operates an on-site bar and kitchen. The proprietary "Harold" longform format and five-level curriculum are its defining intellectual assets.

Product overview

The iO Theater is a live comedy and training venue offering a portfolio of distinct products organized into three main categories: (1) Live Comedy & Performance — weekly shows featuring improv, sketch, and stand-up across multiple house teams and featured productions; (2) Training Programs — the core iO Training Center offering a five-level longform improv program, plus sketch comedy, music improv, stand-up, teen/youth, seasonal intensives, and online ComedyLab classes; and (3) iO@Work Corporate Training — professional development workshops, team building sessions, and custom entertainment for businesses. The theater also operates a 30,000 sq ft event venue with eight configurable spaces for private and corporate rentals, supported by in-house food and beverage service. The company does not offer an API or any AI-powered capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Live Comedy Shows Weekly live performances featuring improv, sketch, and stand-up comedy across multiple stages, including house team shows, featured productions (Improvised Shakespeare Chicago, Best of iO Improv, Saturday Night Sketch, Devil's Daughter), and special events. Shows run six nights a week with multiple price points.
• iO Training Center Program Year-long five-level longform improv program (Levels 1-5) teaching The Harold and other longform techniques. Classes are 8-week sessions meeting once weekly for 3 hours. Level 1: Intro to Longform; Level 2: Character/Environment/Teamwork; Level 3: Scenework; Level 4: Longform; Level 5: Advanced Longform/Form Creation. Students receive free show access during the term.
• Summer Intensive Five-week immersive program condensing five levels of the Training Center curriculum, meeting Monday through Thursday from 11am to 5pm. Flat rate of $1,800 with half-payment option of $900. Includes iO Student ID for free show access and iO Fest 4-Day Pass.
• One-Week Intensives Short intensives offered throughout the year in New Year, Spring, Early Summer, Late Summer, Fall, and Winter sessions. Classes 11am-5pm Mon-Fri with a final evening show, aimed at intensive skill development.
• Sketch Comedy Program Four-level sketch comedy program covering structures, ensemble work, and collaborative idea generation, culminating in staged readings and performances.
• Music Improv Program Three-level music improv program connecting longform techniques with live music and singing, creating improvised musical numbers.
• Teen & Youth Programs Improv classes, summer camps, and after-school programming for ages 6-18, including Teen Improv Camp and Teen Sketch Camp. Programs cover improv principles for personal development, creativity, public speaking, and confidence building.
• ComedyLab Online Classes Online comedy writing classes created by Michael Clayton McCarthy, currently led by Kim Howard Johnson. Offers portfolio building and comedic voice development delivered via Zoom.
• iO@Work Corporate Training Corporate improv training services including professional development workshops, team building workshops, and custom event entertainment for businesses. Customized for sales, leadership, HR, and client-facing teams. Can be delivered on-site or at the theater. Includes an intro call, discovery session, workshop delivery, and optional debrief.
• Event Space Rental 30,000 sq ft of flexible event space across eight distinct rooms available for private events, corporate events, meetings, conferences, and galas. Spaces include The Clybourn (3,000+ sq ft, up to 400 standing), The Fremont (200 standing, 175 theater-style), The Dayton & The Weed (90 standing, 75 theater-style), Main Bar (250 standing), and breakout rooms. Full venue capacity ~1,000. In-house catering, bar, and AV available.
• Food & Beverage Service Full bar and kitchen service open before, during, and after shows. Bar and kitchen open Wed-Sun with varying hours. Full menu including appetizers, tacos, pizza, sandwiches, salads, craft cocktails, draft beers ($6-10), wine ($9-75), cocktails ($10-17), and food items ($4-15).
• iO Fest Annual Comedy Festival Annual four-day comedy festival featuring improv, sketch, music, stand-up, performance art, and specialty workshops. Previous headliners include Meadows, Walsh and Friends, Sarah Sherman from SNL, Jordan Klepper from The Daily Show, Tim Baltz, Chris Redd, TJ Jagodowski and Dave Pasquesi. 2025 had over 1,000 daily visitors and 120+ visiting acts.
• Specialty Comedy Festivals Curated specialty festivals including The Fest (all-BIPOC comedy festival), Fraudway (musical improv festival with 25+ acts), and Devil Fest (single-day festival hosted by Devil's Daughter). Expands diverse comedy programming beyond flagship iO Fest.
• Thawed Out Music & Arts Festival Single-day music and arts festival featuring two stages, 15 visual artists, and 8 musical acts spanning folk, jazz, and rock genres. Organized by Steve Plock with artwork curated by Pat Marek.

Quantifiable outcome

• Over 1,000 daily visitors during iO Fest
• +2 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• Brooklyn Comedy CollectivecoreStrategic or Co-development Partner · 1 January 2024Sister-theater partnership announced January 2024 between iO Theater (Chicago) and Brooklyn Comedy Collective (New York). Designed to offer students, teachers, performers, and administrators new collaborative channels. iO GM Steven Plock and BCC Artistic Director Philip Markle initiated discussions around festival planning in late 2023. First step: iO teachers James Dugan and Gretchen Eng teaching workshops in Brooklyn, BCC Artistic Director Philip Markle teaching at iO. Goal: cultivate performers who value comedy as creative expression and community over commercial success.
• Mudlark Theater (Evanston)minorStrategic or Co-development PartnerPartnership offering teen comedy programming at Mudlark Theater in Evanston. Young performers can develop comedic skills with iO's renowned instructors at Mudlark. Program culminates with a performance at iO Theater. Addresses performers living north of Chicago.
• Truth Zone RecordsminorStrategic or Co-development PartnerCollaboration for Thawed Out music and arts festival at iO Theater on April 26, 2025. Two stages (indoor and outdoor), featuring 15 visual artists and 8 musical acts. Festival organized by Steve Plock with artwork curated by Pat Marek.
• James Conklin Memorial ScholarshipminorOthersScholarship honoring James Conklin, an iO community member. Fully funds tuition, travel, and housing costs for the 5-Week Summer Intensive. Applications typically open in late winter/early spring. Managed in partnership with jcscholarship.org.
• Candlelite Lincoln ParkminorOthersFood and beverage partner for Thawed Out festival and ongoing events. Provides tavern-style thin crust pizza, salads, sandwiches, appetizers, snacks, desserts. Also provides full dining service for iO events.
• Apologue LiqueursminorOthersBeverage partner for Thawed Out festival creating unique cocktail offerings.
• Vers'eau Great Lakes ApéritifminorOthersBeverage partner for Thawed Out festival creating unique cocktail offerings.
• TOKE SeltzersminorOthersBeverage partner for Thawed Out festival creating unique beverage offerings.
• Metric CoffeeminorOthersBeverage partner for Thawed Out festival providing coffee offerings.
• DePaul UniversityminorOthersRelationship with DePaul's Comedy Arts program. Students attend iO for practical improv training. Notable alumnus Laz Howell studied Comedy Arts at DePaul before training at iO.

Scale indicators5 records

Recent moves11 records

Expansion highlights6 records

Direct peers

• The Second City: The Second City is Chicago's most prominent comedy institution and iO's closest direct competitor, offering sketch and improv shows, multi-level training programs, corporate team-building (Second City Work), and a famous alumni network. Both venues compete for Chicago comedy audiences, aspiring performers, and corporate training dollars in the same local market.
• The Groundlings: The Groundlings is a Los Angeles improv and sketch comedy theater with a comparable business model to iO: a multi-level core training curriculum, house company teams performing weekly, and a famous alumni pipeline (Melissa McCarthy, Kristen Wiig). It competes with iO for West Coast students and represents the same training-and-show dual-revenue archetype.
• Annoyance Theatre: Annoyance Theatre is a Chicago-based improv and sketch comedy venue offering shows and classes that directly overlap with iO's Chicago audience and aspiring-performer segments. It operates in the same local market with a similar revenue mix of ticket sales and training.
• Upright Citizens Brigade (UCB): UCB operates improv training centers and theaters in New York and Los Angeles with a multi-level curriculum, house teams, and shows that mirror iO's structure. It is one of the most recognized improv training brands in the U.S. and competes for the same aspiring-performer market nationwide.
• ComedySportz Chicago: ComedySportz Chicago runs short-form improv competitions in the Chicago market and is a resident performer at iO Theater, illustrating the close competitive and partnership overlap between Chicago improv brands. It shares audience and performer pools with iO.
• The Magnet Theater: The Magnet is a New York City improv theater running a multi-level training program, performance teams, and shows, structured very similarly to iO's Training Center and house teams. It represents the closest New York analog in pure training-and-show business model.
• People's Improv Theater (The PIT): The PIT is a New York City improv and comedy theater offering classes, house teams, and shows with a curriculum structure comparable to iO's. It competes for aspiring performers nationally and shares iO's emphasis on training-as-pipeline.
• Second City Work: Second City Work is the corporate training and team-building arm of The Second City, offering applied improv workshops for sales, leadership, and culture. It is the most direct head-to-head competitor to iO@Work in the applied-improv corporate training segment.

Regional players

• Boom Chicago: Boom Chicago is an improv and comedy theater based in Amsterdam with deep Chicago roots, founded by alumni of Chicago improv institutions. It runs shows, training, and corporate entertainment comparable to iO@Work and competes for the international comedy tourism and corporate training segment.
• Unexpected Productions: Unexpected Productions runs the Seattle improv market with a training center, house teams, and shows modeled on Chicago-style longform improv. It does not directly compete in iO's Chicago market but represents the same business archetype in a different geography.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/iochicago
• Facebookfacebook.com/iochicago
• LinkedInlinkedin.com/company/the-io-theater
• Instagraminstagram.com/iochicago

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 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 The iO Theater