BOTANIX PHARMACEUTICALS LTD — Investor Presentation 2021

Oct 25, 2021

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Investor Presentation October 2021

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Botanix Pharmaceuticals: a leader in topical drug development Clinical stage dermatology company developing new treatments for common skin diseases and infection, leveraging its novel delivery technology Permetrex ™

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Pharmaceutical focus

Topically driven

Significant markets

World-class team

Near-term catalysts

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Leveraging novel skin delivery technology (Permetrex ™ ) and novel drug mechanisms of action, including synthetic cannabidiol (CBD)

Targeting key dermatology and antimicrobial indications with topical treatments that are safe, well tolerated and validated by clinical efficacy

Pipeline targeting multi-billion dollar markets with no new products approved by FDA in decades for these indications, with physician and patient demand for new treatments

World-class and experienced team with significant dermatology and antimicrobial drug track record and development expertise

Multiple upcoming catalysts including completion of Phase 1b/2 rosacea study, commencement Phase 2 antimicrobial study, canine AD data readout and new Permetrex ™ opportunities

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World class team

Botanix: World Class Board and Management team

Board of

Directors

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Vince Ippolito

President and Executive Chairman

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Matt Callahan

Executive Director

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Dr Bill Bosch

Executive Director

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Dr Stewart Washer Director

• COO of Anacor and Medicis with 17 years at Novartis

• More than 30 years experience in pharma with 20+ years within dermatology

• Serial founder and ex-investment director of two venture capital firms in life sciences

• Developed four products through FDA approval and launch

• 20+ years experience in pharma  Currently a board member of industry Orthocell, Cynata Therapeutics and

• Emyria

• Co-inventor of SoluMatrix™drug delivery technology and NanoCrystal® Technology

• 20+ years of experience in medical tech, biotech and agrifood

Executive

Management & Advisers

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Dr Clarence Young

Chief Medical Officer

• Recently Chief Medical Officer at Velicept Therapeutics

• Senior leadership roles at Iroko Pharmaceuticals, Novartis and GlaxoSmithKline

Anthony Robinson VP of Development

• Recently Vice President at Advicenne

• Senior leadership roles at Aquestive Therapeutics, Intrommune and Shire Pharmaceuticals

Lynda Berne

Head of Commercial

• Founder of BAL Pharma Consulting

• 13 years senior leadership roles in pharmaceuticals industry

Dr Jack Hoblitzell

Dr Ira Lawrence

SVP Pharmaceutical Development

Advisor

• 30+ years leading world-class  30+ years of senior level technical operations to leadership experience within manufacture and deliver the global pharmaceutical pharmaceuticals and medical device industries

• Senior leadership roles at Assertio Therapeutics , Pfizer, King, Ivax and Teva

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Pharmaceutical focused

Synthetic cannabinoids are well suited to treat skin diseases and infections

Botanix’s studies show synthetic CBD to:[1]

• Be safe and well tolerated

• Have broad anti-inflammatory properties

• Have a strong and consistent impact on skin lesions

• Have anti-microbial properties – kills Staph aureus[2]

• Have potential for widespread use across human and animal health

• Have anti-inflammatory and anti-microbial properties important for dermatology conditions including acne, rosacea and dermatitis

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1. See ASX announcement “Antimicrobial Platform Update and Launch of BTX 1801 Study” (13 March 2020) and The Antimicrobial Potential of Cannabidiol, Communications Biology 4, Article number: 7 (2021) Blaskovich, M et al

2. Staphylococus aureus (S. Aureus) is a common bacterium that lives on skin & nasal passages.. It can cause skin infection & serious or life-threatening infection.

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Pharmaceutical focus

Advanced late-stage pipeline

BTX 1801 Antimicrobial

BTX 1702

Rosacea

BTX 1503

Acne

Ph 1 Ph 1b

Ph 2

Ph 3

Status

Positive results announced, Phase 2 start 1Q 2022

Underway – completion planned by mid 2022

Planning underway for Phase 3 clinical studies

Actively assessing new target indications for rapid clinical development

Ongoing project work and internal development

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Dermatology Antimicrobial

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Topically driven

Permetrex[TM] : skin delivery technology fuels pipeline potential Unique in delivering high doses of drug into the layers of the skin without using permeation enhancers, preservatives, or irritating levels of alcohol / petroleum derivatives

1. Initial application

Target drug is incorporated in Permetrex™ formulation which spreads easily over skin surface

2. Evaporation of solvent

Volatile majority of formulation evaporates – leaving a minority of highly concentrated drug solution on the skin surface

3. Delivery into the skin

Rapid change in concentration of drug as result of evaporation, drives drug into the skin and is designed not to leave excess excipients on the surface

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Epidermis

Dermis

Permetrex[TM] is used in Botanix’s pipeline products and improves delivery for other drugs in development[1]

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1. Topical dosage forms include: solutions, creams, gels, ointments, foams or pastes

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Significant markets

Target markets with significant annual revenues & unmet needs

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Antimicrobial
Specialised / Rosacea 100k patients
Dermatologists ɤɨM patients $0.5bn
Sales [2]
$1.9bn
Sales [1]
US
Prescriber Acne
Base
50M patients
$5.1bn
Sales [3]
General
Practitioners
Preclinical Phase1 Phase2 Phase3
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Stage of Clinical Development

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1. Grandview Research. www.Grandview research.com

2. Using GSK Bactroban Nasal Pricing/BTX 1801 pricing to be developed following analyses of potential impact on healthcare system; assumes 5% YOY pricing following product approval/launch 3. Symphony Health Solutions, METYS, data ending December 2019 – weighted

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Dermatology

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BTX 1702: high impact of rosacea on patients and significant market opportunity

A rapidly growing market: Rosacea market projected to grow to US$2.6bn by 2025[3]

 Papulopustular rosacea is a highly visible chronic skin disease characterised by redness (inflammation) and acne-like-break-outs[1]

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US$2.6bn
US$1.9bn Anticipated to register
CAGR of ~6.8% [3] over the
forecast period
2020 2025
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 Patients diagnosed with Rosacea tend to have higher incidences[2] of:

Depression

• Affects ~5.5% of the global population[4] , ~430m individuals , women are more likely to be affected than men

Social anxiety

• 85% of patients are > 30 years old[5]

Embarrassment

• Currently over 16m Americans affected[6] by rosacea, with ~5m medical treatment prescriptions[7] in the US alone

Decreased quality of life

• Active treatment seekers looking for new solution to rosacea

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1. Blount BW, Pelletier AL. Am Fam Physician. 2002;66:435-440.; 2. Moustafa F. J Am Acad Dermatol. 2014;71:973-980; 3. Grandview Research. www.Grandview research.com; 4. Gether L, et al. Br J Dermatol. 2018;179:282-289; 5. Aimee Two, et al, JAAD, Volume 72, Issue 5, May 2015; 6. National Rosacea Society. www.rosacea.org; 7. Symphony Health Solutions, PHAST

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Dermatology

BTX 1702: Rosacea Phase 1b/2 study is underway Improved data capture design with dose ranging over 8 week treatment period

Study design

• Study designed to enable increased data capture & provide insights to support broader dermatology program

• All sites using Canfield imaging technology supporting clinical assessment, tracking & analysis

• Recruitment going to plan , despite COVID restrictions

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 Endpoints:

• Four dose groups, ~120 patients:

• –

• BTX 1702 high dose - twice daily: 40 patients Safety and tolerability

• – – BTX 1702 low dose - twice daily: 40 patients Change in inflammatory lesion counts

• – from baseline at days 15, 29 and 57

• Vehicle - twice daily: 40 patients

• Proportion of patients with Investigator’s Global Assessment (IGA) treatment success

• ~

• Sites: 15 dermatology sites across Australia and NZ

• Patients: adults (18+ years) with moderate to severe papulopustular rosacea

• Change in Clinician’s Erythema Assessment (CEA) scale

• – Imaging and patient reported outcomes

• Treatment period: 8 weeks

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Dermatology

BTX 1503: Acne in preparation for Phase 3 and future filing Successful End-of-Phase 2 FDA meeting and completion of Rosacea BTX 1702 study (with higher dosing and enhanced data capture) will inform final design for P3 Acne study

Study update

Sizable acne prescription market

• End of Phase 2 meeting with FDA successfully completed, supported by overall efficacy and safety, and significance of Australian data on further analysis[1] in 2020 of late 2019 P2 study data[2] .

• FDA highlighted excellent safety profile of BTX 1503, allowing several waivers for studies typically required for dermatology drug registration

• Co-primary efficacy endpoints[3] agreed for Phase 3

• Important milestone providing clarification on activity to move forward

• Confirmed drug development plan to support filing and registration for

• treatment of moderate and severe acne

• Planning underway for Phase 3 clinical studies to be informed by completion of BTX 1702 Phase 1b/2 study

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22m total prescriptions in 2019 growing ~5% year-on-year[4] US$5.1bn in sales in 2019[4]

>2m p.a. active, diagnosed acne patients under HCP care[5]

~40m to ~50m acne sufferers[6] (~10m mod-to-severe) 60% of acne patients are managed by 5,000 HCPs[7]

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1. ASX 4 Mar 2020, Additional BTX 1503 data analysis 2. ASX 22 Oct 2019 BTX 1503 data and progression to Phase 3 3. Co-primary efficacy endpoints: (1) Absolute change from baseline in inflammatory and absolute change from baseline in non-inflammatory lesion at Week 12; (2) Proportion of patients with an Investigators Global Assessment (IGA) of “clear” or “almost clear” and at least a 2-grade improvement in IGA from baseline at Week 12

2. Symphony Health Solutions, METYS, data ending December 2019 – weighted; 5. Symphony Health Solutions, MAT, ending April 2019; 6. AAD. Acne Stats and Facts. https://www.aad.org/media/stats-numbers ; 7. Symphony Health Solutions, IDV Vantage, February 2019

HCPs:: Healthcare Professionals

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Dermatology

BTX 1204A: Meeting need for safe, non-steroid for chronic use in Atopic Dermatitis

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Atopic Dermatitis Market ($B)

• Atopic dermatitis is one of the most common skin diseases[1:]

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Symphony Health Services (PHAST) 2017
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• 2% - 3% of adults, 25% of children

• 90% of patients are mild to moderate[3]

• Patients see flare-ups of itch, red inflamed rash and excessive dryness or scaling

• Significant unmet need with limited options for safe and effective treatment chronic disease, biologics are reserved for severe population

• Affects 20-25M Americans[2,3]

• Pediatric population needs tolerable steroid free alternative[1 ]

• Almost 85% cases present by the age of 5 years[6]

• Severe population is ~10% of patients

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(1) Eichenfield LF, Tom WL, Chamlin SL, Feldman SR, Hanifin JM, Simpson EL, et al Guidelines of care for the management of atopic dermatitis, Section 1 diagnosis and assessment of atopic dermatitis. J Am Acad Dermatol 2014 Feb: 70(2):338-51. (2) Hanfin, J.M. et al. Dermatitis, 2007, 82(2): 82-91 (3) Silverberg, J.I. & Hanifin, J.M. J Allergy Clin Immunol, 2013, 132(5): 1132-1138 (4) Silverberg, J.I. & Simpson, E.L. Dermatitis, 2014, 25(3): 107-114 (5) Barbarot et al. Allergy, 2018, 73:1284-1293 (6) https://www.aad.org/media/stats-numbers

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Dermatology

Atopic dermatitis – chronic inflammatory disease for both canines and humans

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• Canines naturally and commonly develop a pruritic dermatitis that is clinically and immunologically extremely similar to human AD[1]

• Dogs and humans with AD also have similar problems with skin barrier function – these problems cause the skin to be very dry and prone to Staph Aureus infections[2]

• Canine models are increasingly used as screening tools for new therapeutic development , including dose ranging and safety assessments

• Canine studies are faster and more cost effective than human studies and help de-risk later stage studies

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1. Leung. Curr Opin Pediatr. 2016 Aug: 28(4): 456-462

2. Hong et al.Semin Cutan Med Surg. 2011;30(2):71–86

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Dermatology

BTX 1204A: Dermatitis data supports further development Pilot canine study with higher dose and novel Permatrex™formulation showed reduction itch and lesions - dermatitis in canines and humans is clinically and immunologically very similar

BTX 1204A: Pruritus (itch) mean ESP scores[1,2]

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10 Extremely
severe
8 Severe
6 Moderate
4 Mild
2
Very Mild
0
Normal
Day 0 Day 14 Day 28
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BTX 1204A: % reduction from baseline (CADESI-04) [1,3]
Baseline0.0%
(10.0%)
(20.0%)
(30.0%)
(40.0%)
(50.0%)
(60.0%)
Day 0 Day 28
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BTX 1204A showed decrease in pruritus over a 28 day period, resulting in average pruritus rating of Very Mild (post-treatment)

BTX 1204A had positive effect, showing decrease in pruritus over a 28 day period, resulting in a ~57.3% reduction from baseline

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1. BTX 1204A clinical study data announced 17 May 2021 2. EPS: Enhanced Pruritus Score – designed to measure the severity of itching in dogs 3. CADESI-04: Canine Atopic Dermatitis Extent and Severity Index – simplified scale for assessing skin lesions of atopic dermatitis in dogs

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Dermatology

BTX 1204A: Atopic dermatitis development strategy

Larger POC canine study underway[1] , will inform licensing in animal health & potential re-launch of late-stage P2b clinical program in 2022

Proof of Concept Canine Study Parameters

 Four dose groups, up to 45 dogs:

• BTX 1204A high dose: 15 dogs

• BTX 1204A low dose: 15 dogs

• Vehicle: 15 dogs

• Sites: 3 Australian sites

• Treatment period: Twice daily treatment for 28 days

• Endpoints: Treatment effectiveness using Enhanced Pruritus Score[2] ; Canine Atopic Dermatitis Extent and Severity Scale Index[3]

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Planned pathway to approval
Canine Pilot Study Canine POC Study
Partnering Opportunity
Reductions in itch and Study started
in Animal Health
severity scale measures Sep 2021
Previous studies Phase 2b Phase 3
Data to date support anti-microbial Human dose ranging Pivotal human studies
& anti-inflammatory activity study CY2022 for registration
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Successful outcome opens up partnering opportunity & supports progression to Phase 2b human study in atopic dermatitis.

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1. ASX 29 Sep 2021: Launch of canine atopic dermatitis program

2. Enhanced Pruritus Score (EPS): designed to measure the severity of itching in dogs

3. Canine Atopic Dermatitis Extent and Severity Index (CADESI-04): simplified scale for assessing skin lesions of atopic dermatitis in dogs

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Anti-microbial development update BTX 1801

Antimicrobial

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BTX 1801: Demonstrated clinical efficacy vs S. aureus in Phase 2a study

Staphylococcus aureus (S. aureus or ‘staph’) is a common bacterium that lives on skin and in nasal passages. It can cause skin infection and serious or lifethreatening blood stream infections , pneumonia or bone and joint infections.

 Safe and generally well tolerated at doses of active drug up to 20%  All 66 participants successfully completed Safety & the BTX 1801 study tolerability  No severe adverse events reported[1]  Efficacy of ointment and gel formulations demonstrated for primary endpoint at Day 12  Eradication rates as high as 76.2% at Day 7, Efficacy with eradication effects extending through to Day 28, despite no treatment after Day 5

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1. BTX 1801 Phase 2a Clinical Study - BOT data on file 2. The incidence of adverse events was low, mild in severity and occurred at similar rates across the different treatment groups with no severe events reported

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Antimicrobial

BTX 1801: Haemodialysis patients with central venous catheters at risk of bloodstream infections

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• Replicates the functions of the kidneys in patients with kidney failure, by using a machine to filter and clean the blood

Haemodialysis Rationale for selection Significant health risks

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• Infection is a leading cause of death with 20% to 40% of haemodialysis patients eventually dying from an infection[1]

• Risks for central venous catheter-related complications were as high as 30% and 38%, at 1 and 2 years respectively[2]

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• Central venous catheter patients (approx. 160,000) make up more than 70% of blood infections in the dialysis population[2]

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1. ‘Mortality in dialysis patients: analysis of the causes of death’, Mailloux LU, Bellucci AG, Wilkes BM, Napolitano B, Mossey RT, Lesser M, Bluestone PA. AJKD. 1991 Sep;18(3):326-35 2. ‘Complications From Tunneled Hemodialysis Catheters: A Canadian Observational Cohort Study’, (2019) Poinen, K. et al AJKD Volume 73 Issue 4 Pages 467-475

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Antimicrobial

BTX 1801: Clinical development moving quickly to meet need Targeting nasal decolonisation of Staph in patients undergoing haemodialysis to reduce incidence of life threatening blood stream infections

FDA incentives provide accelerated development and increased market exclusivity

Next Study

Phase 1 Phase 2 Safe and delivers Effective at killing Staph aureus synthetic cannabidiol over 2 months, with 2-3 times effectively weekly treatment of the nose

• Extra 5 years (total of 8 years) exclusivity from generic competition

QIDP[1] generic competition status  Attractive economic benefits from FDA approval  Following IND submission, allows increased Fast track consultation with FDA status  De-risks clinical trials and accelerates

• Attractive economic benefits from FDA approval

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• De-risks clinical trials and accelerates development pathway

LPAD[2]

• Allows smaller, fewer and / or shorter clinical trials for FDA approval

Phase 2a Phase 3 BTX 1801 effectively kills BTX 1801 is effective at killing Staph aureus after 5 days of Staph aureus for up to 12 continuous treatment[3] months, with three times weekly treatment of the nose

status

Botanix plans to apply for all three programs to accelerate development, reduce clinical costs and increase exclusivity

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1. QIDP: Qualified Infections Disease Product

2. LPAD: Limited Population Pathway for Antimicrobial and Antifungal Drugs 3. ASX 3 Feb 2021 BTX 1801 Phase 2a Clinical Study Data, ASX 4 May 2021 Update on BTX 1801 clinical development

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Corporate

Executing on key clinical milestones

 Antimicrobial: BTX 1801 positive Phase 2a study results

Positive results announced, further Phase 2 study start Q1 2022

 Rosacea: BTX 1702 Phase 1b study start

Recruitment currently underway, target completion mid 2022

 Acne : BTX 1503 planning for Phase 3 clinical studies Pending completion BTX 1702 Phase 1b/2 study

 Dermatitis: BTX 1204A canine proof of concept study underway

To inform potential animal health licensing and re-launch Phase 2b human study - data anticipated 1H 2022

 New indications and Permetrex™opportunities

Actively assessing new indications and opportunities for rapid clinical development

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Dates are calendar year

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Corporate

Botanix Pharmaceuticals: a leader in topical drug development Clinical stage dermatology company developing new treatments for common skin diseases and infection leveraging its novel delivery technology Permetrex ™

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Developing novel skin delivery technology (Permetrex ™ ) and novel mechanisms of action, including synthetic cannabidiol (CBD)

Late stage pipeline targeting dermatology and antimicrobial indications with topical treatments that are safe, well tolerated & clinically validated

Multi-billion dollar growth markets, with demand for new treatments and unmet needs.

Established IP position and protection

World-class , experienced team with significant track record and development expertise

Executing on pipeline across anti-microbial, rosacea, dermatitis and acne indications. Near term catalysts: Ph1b/2 Rosacea and Ph2 antimicrobial studies, new indications for rapid development

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DISCLAIMER

statements in this release about future and for future Any press expectations, plans prospects the Company, the Company’s strategy, operations, and other statements containing the words “anticipate,” “believe,” “estimate, ”expect,” “intend,” “may,” “plan,” “predict,” “project,” “target, ”potential,” “will,” “would,” “could,” “should,” “continue,” and similar expressions, constitute forward-looking statements. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including: the Company’s ability to successfully develop its product candidates and timely complete its planned clinical programs and the Company’s ability to obtain marketing approvals for is product candidates. In addition, the forward-looking statements included in this release the views as of the date hereof. The that press represent Company’s Company anticipates subsequent events and developments will cause the Company’s views to change. However, while the Company may elect to update these forward-looking statements at some point in the future, the Company specifically disclaims any obligation to do so. These statements should not be relied as the views as of date to the date forward-looking upon representing Company’s any subsequent hereof.

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