COSM 2026
By Buzzbox Media · Last reviewed August 3, 2026
What is COSM?
Seven ENT subspecialty societies under one roof: the only spring meeting where you can reach rhinologists, otologists, laryngologists, and facial plastic surgeons simultaneously.
What are the key facts about COSM?
- Host organization: Combined Otolaryngology Spring Meetings (multi-society)
- Primary specialty: otolaryngology
- Scale: mid
- Geography: US National
- International attendance: ~10%
- See all ENT / Otolaryngology conferences
Which device categories fit COSM?
Which buyer stages does COSM fit?
What does COSM charge for booth space?
Cost not published
Combined Otolaryngology Spring Meetings (multi-society) does not publish booth pricing for COSM that we can link to, so we do not list a figure here. We would rather show nothing than an estimate you cannot check. Ask them directly on the COSM exhibitor page ↗.
Planning the COSM booth itself? Read our guide to medical conference booth design for booth types, union labor rules, and the corner upgrade.
Who attends COSM?
COSM combines multiple ENT subspecialty societies into one spring meeting: ARS (Rhinologic), ALA (Laryngological), AOS (Otological), ABEA (Broncho-Esophagological), ANS (Neurological), ASPO (Pediatric), and AAFPRS (Facial Plastic). Three full exhibit days (Thu-Sat) plus optional tabletop exhibits on Wed and Sun general sessions.
- Purchasing authority: ~55% of attendees
- Effective buyers: ~1,375
- International attendance: ~10%
Where is COSM held?
- Venue: Phoenix, AZ (Phoenix Convention Center)
- Product theater: Not available
Who else exhibits at COSM?
Exhibitor data coming soon for COSM.
Is COSM worth exhibiting?
Why Exhibit
Seven ENT subspecialty societies under one roof: the only spring meeting where you can reach rhinologists, otologists, laryngologists, and facial plastic surgeons simultaneously.
Why Skip
If you only need rhinology or otology buyers, this meeting dilutes your audience across 7 subspecialties. AAO-HNS OTO EXPO in the fall is 2x the size and more commercially oriented. COSM's value is academic breadth, not buyer density.
What should exhibitors know before COSM?
Non-profit/startup discounts available on request. No furniture/carpet included in any tier.
What is the Buzzbox Score for COSM?
8.3 / 10 (Excellent)
8.3 out of 10. A top-tier show worth a serious line item. Carried by audience quality (8.7: 55% purchasing authority and 31:1 attendee ratio). The lightest dimension is growth trajectory (7.8, mid-size with room to grow). Seven ENT subspecialty societies under one roof: the only spring meeting where you can reach rhinologists, otologists, laryngologists, and facial plastic surgeons simultaneously.
How we score
Six weighted factors, each scored on a 0 to 100 rubric then normalized to a 7.0 to 10.0 band. Every show on this list cleared a relevance bar to be included, so 7.0 is the floor; the number tells you how far the leaders pull ahead. A factor we cannot source is left unscored rather than estimated, and the overall score above was set before any figure behind it was withdrawn.
Strong (8.7): 55% purchasing authority and 31:1 attendee ratio.
Not scored on cost: this organizer publishes no booth price we can link to.
Strong (8.3): exhibitor count disclosed.
Strong (8.2): non-union venue (simpler, cheaper move-in), purpose-built convention venue, and 8 booth configurations to choose from.
Strong (8.4): honest "who should skip" guidance, the flagship / largest show in its niche, and innovation / startup pavilion.
Solid (7.8): mid-size with room to grow.
When are the COSM exhibitor deadlines?
Detailed deadlines not yet published for COSM. Check the official site for the application window.
Frequently Asked Questions
How much does a booth cost at COSM?
COSM does not publish booth pricing we can link to, so we do not list a cost for this show. Rather than estimate one, we point you at the organizer's exhibitor page to request current rates directly.
How many people attend COSM?
COSM draws approximately 2,500 attendees. COSM combines multiple ENT subspecialty societies into one spring meeting: ARS (Rhinologic), ALA (Laryngological), AOS (Otological), ABEA (Broncho-Esophagological), ANS (Neurological), ASPO (Pediatric), and AAFPRS (Facial Plastic). Three full exhibit days (Thu-Sat) plus optional tabletop exhibits on Wed and Sun general sessions.
When and where is COSM 2026?
COSM 2026 takes place April 22-26, 2026. The venue is Phoenix, AZ (Phoenix Convention Center). Combined Otolaryngology Spring Meetings (multi-society) hosts the meeting.
How many COSM attendees have purchasing authority?
About 55% of COSM attendees hold purchasing authority, which works out to roughly 1,375 effective buyers out of approximately 2,500 attendees. Effective buyers multiplies total attendance by the share of attendees who hold purchasing authority. Both inputs are estimates drawn from organizer reporting and our own exhibitor research, so read the figure as directional rather than exact.
How does Buzzbox Media score COSM?
COSM carries a Buzzbox Score of 8.3 out of 10 (Excellent), with one caveat on this record: cost efficiency is not scored, because Combined Otolaryngology Spring Meetings (multi-society) publishes no booth price we can link to, and the overall score was set before that figure was withdrawn. The factors still scored are audience quality, data transparency, exhibitor experience, editorial value, and growth trajectory. Each factor is scored on a 0 to 100 rubric then normalized to a 7.0 to 10.0 band, and every conference in our index cleared a relevance bar to be listed, so 7.0 is the floor. On this record the highest is audience quality at 8.7 and the lowest is growth trajectory at 7.8.