Green Tie Affair brings the OCHBS afterparty to COSI Columbus — a night engineered for chemistry, where premium networking, live music, and immersive activations collide under the dome of science.
Not Just An Afterparty. A Catalyst For Connection.
We don't just host events. We accelerate human connection through precision atmospherics — pairing OCHBS's premier audience with a night engineered for chemistry.
The Green Tie Legacy
After Hours, Elevated.
Green Tie Affair is the after-hours experience brand built for Ohio's cannabis business community — where the conversations that matter most happen long after the show floor closes.
Every Green Tie event is engineered like a reaction: the right people, the right atmosphere, and a precise sequence of moments designed to spark genuine connection between operators, investors, and innovators shaping the industry.
On September 23, 2026, OCHBS attendees and Green Tie sponsors take over COSI Columbus for the official Day One afterparty — premium networking, live music, and hands-on activations set against one of the country's most iconic science museums.
Venue
COSI Columbus
Date
Sept 23, 2026
Status
Official OCHBS Day One
On Tap
Music · Networking · Activations
Experience Zones
Six Zones. One Reaction.
01
01 · Chemistry Lounge
Chemistry Lounge
Low light, craft cocktails, and curated playlists — a slow-burn space built for the first conversation of the night.
Craft Cocktails
Low Light
Conversation
02
02 · Reaction Bar
Reaction Bar
Signature pours mixed tableside by our "reaction technicians" — equal parts mixology and showmanship.
Signature Drinks
Live Mixology
Riverside View
03
03 · Gravity VIP
Gravity VIP
An elevated lounge with reserved seating and bottle service — for the deals that need a quieter orbit.
Bottle Service
Reserved Seating
Elevated
04
04 · Discovery Zone
Discovery Zone
Hands-on sponsor activations and interactive exhibits, set against COSI's permanent collection.
Activations
Interactive
Sponsor Showcase
05
05 · Energy Stage
Energy Stage
Live DJ sets and a dance floor built for momentum — where the night reaches critical mass.
Live DJ
Dance Floor
Light + Haze
06
06 · Formula Photo Moment
Formula Photo Moment
A branded backdrop engineered for the night's best shot — proof you were part of the reaction.
Branded Backdrop
Photo Op
Shareable
Previous Reactions
The Floor Remembers.
Dance Floor Energy
DJ Set · Light + Haze
Networking Hour
VIP Mixer
Gravity VIP Lounge
Reserved Seating
The Toast
Cheers To Connection
Riverside After Dark
Outdoor Courtyard
Inside COSI
Science After Hours
Why Attend
Five Reasons To React.
01
Exclusive Access
The official Day One afterparty for OCHBS — open to badge holders and invited guests only.
02
Premium Networking
Connect with the operators, investors, and innovators shaping the industry — in a setting built for real conversation.
03
Unmatched Venue
After-hours access to COSI Columbus, one of the country's most iconic science museums.
04
Curated Experiences
Six distinct zones, each engineered for a different mood — from quiet conversation to full energy.
05
The Green Tie Standard
High production value and editorial polish, in every detail — no compromises, no shortcuts.
The Venue
Where Science Meets The Social Hour.
COSI Columbus transforms after hours — exhibit halls and galleries reopened for one night, repurposed as a backdrop for Catalyst's six experience zones.
Booth visibility ends when the convention floor closes. Catalyst gives sponsors the after-hours stage — direct access to the same audience, in a setting they'll actually remember.
