ProSomnus SPAC Presentation Deck

The ProSomnus Difference: Precision, Personalized Sleep Medicine Therapy ProSomnus manufactures one of the only devices to meet AADSM standards THE ONLY PRECISION SLEEP MEDICINE DEVICE Patented Technologies Titration Mechanism: Iterative Titration Mechanism: 90 Degree Precision Prescription Transfer Engineered Materials Biomechanics: Personalization Biomechanics: True Anatomy Guidelines Establish ≤ 1 millimeter as Definition for Precision PRECISION PRESCRIPTION TRANSFER O Prescription Transfer Error (in millimeters)¹ Legacy OAT PROSOMNUS SLEEP TECHNOLOGIES 0.3 Efficacy Loss % as a Function of Prescription Transfer Error² Legacy OAT PROSOMNUS SLEEP TECHNOLOGIES 3% PROSOMNUS SLEEP TECHNOLOGIES OTHER ADVANTAGES OF PROSOMNUS Iterative titration, no metal ✓ ~30% smaller overall profile³ ~4.5x larger area for tongue space³ ~8.5x more hygienic based on 10-day color-difference test4 No clinically or statistically significant tooth movement5 Only Medical Grade Class VI certified material ✓Lower profile 1. Hu, J. et al. Abstract presented at 2020 AADSM meeting 2. Implication of Kato, 2000, applied to prescription transfer error and difference in lingual space 3. Hu, J. et al. Abstract presented at 2021 AADSM meeting and Company data; in comparison to legacy OAT 4. Gelb, M. Say No to Bio-Gunk. Dental Sleep Insider. 2018; in comparison to legacy OAT 5. Vranjes N, Santucci G, Schulze K, Kuhns D, Khai A. Assessment of potential tooth movement and bite changes with a hard- acrylic sleep appliance: A 2-year clinical study. J Dent Sleep Med. 2019 3.7 37% 15 STRICTLY CONFIDENTIAL

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