Ensysce Biosciences : Corporate Overview

ENSC

Published on 04/20/2026 at 02:17 pm EDT

NASDAQ: ENSC Investor Presentation April 2026

Investor Presentation | Apr 2026

Clinical-stage company - 'Next generation opioids' - disrupting analgesia using transformative trypsin-controlled chemistry.

Targeted therapy areas focus on products with blockbuster potential with FAST TRACK and BREAKTHROUGH THERAPY designations.

Lead Product near term launch with demonstrated safety and efficacy,

reducing clinical risk with shortened development timeline.

Strong global patent estate

Highly experienced management team - broad biopharma background, from drug development to commercialization.

TAAPTM

Anti-abuse chemistry

MPAR®

Overdose protection

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Investor Presentation | Apr 2026

Investor Presentation | Apr 2026

Pain is the Leading Cause of Doctor Visits

Americans in

severe pain Misuse Opioids Opioid Rx in USA

Severe Pain is in Cancer Patients

https://drugabusestatistics.org/opioid-epidemic/ | https://www.cnn.com/2022/12/14/health/drug-overdose-deaths-slowing/index.html

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Investor Presentation | Apr 2026

TAAP & MPAR®: Chemical Safety Switches

TAAPTM

Trypsin-Activated Abuse Protection*

MPAR®

Multi-Pill Abuse Resistance: Combination Product for Overdose Protection *

PROTECTIVE CONTROLLABLE

ANTI-ABUSE PERFORMANCE

Trypsin TURNS ON RELEASE.

Chemically engineered to control release.

Reduces abuse.

Improves product delivery.

TURNS OFF RELEASE only with overdose. Trypsin inhibitor and TAAP prodrug.

Platform based on trypsin control of activation and release.

MPAR® can provide overdose protection to other drug classes.

SMART COMBINATION UNIQUE

MULTI-USE

*For mechanism see appendix

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Investor Presentation | Apr 2026

New class of opioid > Low abuse - Prescriber confidence/reassurance

to patients

Reduced risk of overdose,

first time ever

Originally identified Pharmaceuticals

Immediate release opioids

Abuse Deterrent Formulations (ADFs) Extended-release formulations claimed to reduce abuse and addiction

V

Immediate and extended-release chemistry

to deliver pain relief when needed

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US Pain Management Drugs Market *

LAUNCH STRATEGY

V

V

V

*Ref: IQVIA 2023 Market Data

ACUTE CHRONIC

** PF614 used for post-surgical pain is anticipated to have four key advantages over traditional opioids: (a) pre-dosing at the start of surgery to reduce pain generation from the beginning vs. chasing pain that is already moderate to severe at the end of surgery,

(b) having a longer duration of action to allow patients to stop or transition off opioids before leaving the hospital or clinic and continue using only non-opioid drugs at home, (c) reducing overall opioid use, and (d) potentially reducing overall healthcare costs.

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Investor Presentation | Apr 2026

Investor Presentation | Apr 2026

Neuroscience and Respiratory Diseases

TAAP-Oxycodone

TAAP-MPAR-Oxycodone TAAP-Hydromorphone

TAAP-Dexamphetamine TAAP-Dexamphetamine

TAAP-Methadone

FDA Fast Track FDA Breakthrough Therapy

TAAP and MPAR® platforms with 505(b)(2) regulatory development path; *Nafamostat in development for MPAR®, infections and respiratory diseases. ER = Extended Release, IR = Immediate Release

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Strong Efficacy - Pain Management RE-Invented

Fast Track Designation Grant by FDA January 2018

Investor Presentation | Apr 2026

PF614 Clinical Data

PF614 efficiently delivers oxycodone

Longer oxycodone half-life supports BID dosing

Reduced nasal abuse potential

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RE

Investor Presentation | Apr 2026

PF614 Clinical Studies

Investor Presentation | Apr 2026

Strong Efficacy -longer efficacy and increased safety Phase 3 Launched

2025/2026 DESCRIPTION SIGNIFICANCE

Regulatory

Phase 3 Protocol reviewed FDA feedback on Pivotal study plans received

PF614-301

Phase 3 study Abdominoplasty: Post-surgical pain initiated 2025

Pivotal study leading to NDA*

PF614-302 Open label study Bunionectomy: Post-surgical

pain - to initiate 2026

Study to support safety data base leading to NDA*

*NDA = New Drug Application submitted for approval to the FDA.

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Investor Presentation | Apr 2026

- Development Pathway for Acute and Chronic Pain Indications

Acute Severe Pain

PF614-301

Phase 3 Initiation

2025

2026

PF614-302

V

V

V

Phase 3 Initiation

2027

PF614 NDA

Non-clinical studies for chronic indications

Supporting PF614-MPAR

Clinical studies

2025

2026

2027

Chronic Severe Pain

V

V

V

V

Bold text: Completed

Non-bold text: Planned studies

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Powerful Analgesia + Overdose protection

TAAP Oxycodone combination product

Breakthrough Therapy Designation Grant by FDA January 2024

Investor Presentation | Apr 2026 Investor Presentation | Apr 2026

Blocks Activation of PF614 and Oxycodone Release if Overdosed

PRE-CLINICAL MPAR SUPPORT DATA

V

Combination product of PF614 with an ultrapotent trypsin inhibitor, nafamostat

Oxycodone levels without MPAR®

PF614 without nafamostat

Oxycodone mean concentration (ng/mL)

25

20 10 dose units

6 dose units

3 dose units

15 1 dose units

Oxycodone levels with MPAR®

PF614 with nafamostat

Oxycodone mean concentration (ng/mL)

25

20

15

Taken at prescribed doses there is no change in oxycodone release from PF614

V

V

With increasing dose unit administration, increasing amounts of nafamostat blocks trypsin release of oxycodone and prevents opioid overdose

10 10

5 5

0

0 4 8 12 16

Time (hr)

20 24

0

0 4 8 12 16 20 24

Time (hr)

TAAP + MPARTM: PRECLINICAL DATA

in rats n=4 / dose

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Investor Presentation | Apr 2026

Phase 1 Clinical Study Demonstrating Overdose Protection

PF614 alone no MPAR® overdose protection PF614-MPAR 25 mg with MPAR® overdose protection

PF614-MPAR

with overdose protection

[1] [2] [3] [4] [5]

[6] [7]

[8]

PF614 mg

PF614 (mg) or PF614-MPAR [# dose units]

PF614 alone (SAD-MAD studies) PF614 + nafamostat (PF614-MPAR study)

Goal to deliver two doses up to twice daily Trypsin controlled opioid release

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Investor Presentation | Apr 2026

Clinical Development for Overdose Protection

2025/2026 OUTCOME SIGNIFICANCE

Continue Phase 1b SAD 100 mg dose followed by MAD Confirm overdose protection followed by MAD

study to support Type B FDA meeting

PF614-MPAR Meeting held with FDA to discuss development plans Outline path to commercialization

PF614-MPAR-102

SAD Part A

PF614-MPAR

FDA meeting

PF614-MPAR-301

Efficacy/Safety

V

2024 2025

PF614-MPAR-102

Food Effect Part B

PF614-MPAR-102

Part C

2026

2027

PF614-MPAR NDA

V

V

Bold text: Completed

Non-bold text: Planned studies OD: Overdose

SAD: Single Ascending dose study MAD: Multi-Ascending dose Study

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Expanded Opportunities

Investor Presentation | Apr 2026

Improving Drug Delivery and Lifecycle Management

TAAP MODIFICATION ATTRIBUTES

OPPORTUNITY

Reaches the gastrointestinal tract/epithelial cells intact

Chemistry controlled GI delivery for 'Immediate' or 'Extended-Release'

Improves aqueous solubility

Enhances the drug's permeation through the epithelial lining

Our TAAP platform enables new chemical entity (NCE) solutions that allow us to obtain new patents and extend market positions, revitalize approved medications and repurpose approved medications for the benefit of patients and care givers. Specifically, Ensysce has used to develop a highly novel product for OUD.

Possible oral delivery of injectable drugs

Enhance activity of drugs on GI tract

Extend half-life to improve dosing

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Disclaimer

Ensysce Biosciences Inc. published this content on April 20, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on April 20, 2026 at 18:16 UTC.