INVESTOR PRESENTATION

NASDAQ: WKEYSIX: WIHN

November 2020

Securing and Removing complexities of securing people, applications and

objects in the connected world

DISCLAIMER2

This communication expressly or implicitly contains certain forward-looking statementsconcerning WISeKey International Holding Ltd and its business. Such statements involve certainknown and unknown risks, uncertainties and other factors, which could cause the actual results,financial condition, performance or achievements of WISeKey International Holding Ltd to bematerially different from any future results, performance or achievements expressed or impliedby such forward-looking statements. WISeKey International Holding Ltd is providing thiscommunication as of this date and does not undertake to update any forward-looking statementscontained herein as a result of new information, future events or otherwise.

This corporate presentation does not constitute an offer to sell, or a solicitation of an offer to buy,any securities, and it does not constitute an offering prospectus within the meaning of article652a or article 1156 of the Swiss Code of Obligations or a listing prospectus within the meaningof the listing rules of the SIX Swiss Exchange. Investors must rely on their own evaluation ofWISeKey and its securities, including the merits and risks involved. Nothing contained herein is, orshall be relied on as, a promise or representation as to the future performance of WISeKey.

Since 1999

AT-A-GLANCE

SWX: WIHN*Nasdaq: WKEY**

HQ Geneva84 Employees

* Listed on the SIX Swiss Stock Exchange since March 2016

** ADRs listed on Nasdaq since December 2019

1.6 BillionVaultIC IoT chips installed

since 2010

> 3,500 Customers

5 BillionBrowsers with WISeKey Root of Trust installed

CEO: IoT security pioneer

Global cybersecurity pioneer delivering digital identity ecosystems with artificial intelligence to secure the Internet of Things (“IoT”) and automate decision making

3

$ 17.4 MCash position at 12/31/2019

$22.7 MRevenue for FY 2019

$6.4 MInvestment in R&D during 2019

INVESTMENT HIGHLIGHTS4

Serving the RAPIDLY-GROWING IoT cybersecurity and digital brand protection markets

UNIQUE CHIP-TO-AI-CLOUD PLATFORM simplifies connected objects, decisions and security

Core technology has HORIZONTAL ADOPTION across a wide range of industries

LARGE installed base of REPEAT & LONG-TERM blue-chip customers

Digital transformation (AI + IoT = AIoT) is increasing cybersecurity spending in every sector

SOLID FINANCIAL POSITION; Unique Trust Model and THREE-FOLD GROWTH STRATEGY

THE PROBLEM5

The connected security landscape is like the Wild West;

fractured, dangerous, and hard to navigate

Costly, Complicated Designs

In-house security experts required to stitch each block together.

Disconnected Vendors/Brands

Requires navigation through a sea of security components.

Security Holes at Every Turn

Each integration step represents a new security risk if it isn’t done right.

WISeKey’s integrated solutions are designed to solve this problem

DIGITAL TRANSFORMATION STRATEGY 6

Securing the IoT and beyond

Digital Identities

Root of Trust

HIRO

Artificial Intelligence

Certificate Authority

Data Cloud

Semiconductors

Secure NFC

Devices I Systems I Code I Objects I People

“Birth Certificates” for everything

Automating decision making

Making everything intelligent

Embedding Secure Elements

Integrated solution offers a digital identity ecosystem establishing trust at every point

DELIVERING REAL-WORLD SOLUTIONS7

Secure IoTProviding our own Microchips, Cryptographic

Root of Trust and Trusted PKI technology for the security of connected devices and systems.

Digital Brand ProtectionUsing NFC connectivity and Blockchain Identity to ensure

the authenticity of goods, at any moment, from the supply chain to the end user and beyond.

Artificial IntelligenceDelivering automated decision making through AI with ethical principles of respect for human

autonomy, fairness and accountability.

Digital Identity SolutionsProtecting anything on the move by

securing your digital identity and data communications.

The investment has been in product!

MARKET TRENDS8

Digital Growth, Data ExplosionData being generated by 2025

Connected Device ExpansionDevices in a 5G world by 2035

Edge Intelligence

Collect data closest to the consumer

Platforms Win

Integrated platforms solve complexities

163 ZB 1T

9

IOT MARKET GROWTH9

0

10

20

30

40

50

1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020

50B

Large networked systems

Individual connected PCs

Inception of IoT

A new connected world

*Data: Gartner/TTV –https://www.telecomtv.com/content/iot/the-cost-of-making-iot-more-secure-will-reach-3-1bn-by-2021-16528/https://www.gartner.com/en/newsroom/press-releases/2018-03-21-gartner-says-worldwide-iot-security-spending-will-reach-1-point-5-billion-in-2018

912

1,174

1,506

1,931

2,457

3,118

2016 2017 2018 2019 2020 2021

Annual IoT Security Spend ($ millions)

Connected Devices(in billions)

OUR PRODUCTS & SERVICESA complete suite of Digital Identity products, intentionally designed to remove the complexities of connected security

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THE WISEKEY ECOSYSTEM

• Digital Identity Solutions

• Secure IOT solutions

• Artificial Intelligence

• Digital Brand Protection

THE WISEKEY ECOSYSTEM1

1

Single Vendor Simplicity

Combining best-in-class hardware, software, and managed services in an easy to adopt platform.

SecuredHardware

Protected Products

Managed Services

Integrated Security Platform Powered with Artificial Intelligence based decision making

Modular Flexibility

Customers can select, and only pay for, the appropriate components for their specific market vertical and take advantage of existing infrastructure

Trusted Security

Built with FIPS and CC accredited cryptographic technologies by security veterans.

Certified Software

SecuredPeople

THE WISEKEY FORESIGHT PLATFORM1

2

5 BILLION ROOT OF TRUST INSTALLED

A secure trust anchor, publicly recognized by applications and operating systems world-wide installed on computers and mobiles.

1.6B SEMICONDUCTORS INSTALLED

Semiconductors used for the protection of digital identities on hardware devices and objects.

250M DIGITAL IDENTITY CERTIFICATES SIGNED PER YEAR

Trusted provisioning and management of digital identities and transactions.

WISAIoT• Integrates semiconductors, smart sensors,

IoT systems, AI and a data cloud and collects data

• Delivers a unique offering to power innovation and digital transformation

HIRO • Processes collected data• Automatically acts upon in real time in a

highly secure environment

WISeKey’s Digital Identity Ecosystem is expanding exponentially

DIGITAL IDENTITY SOLUTIONS

Secure Digital Identities

The root of trust that drives your business is powered by WISeKey

Secure Validation of Everything

WISeKey can identify, secure and validate all of your people, systems, applications, devices, objects and transactions

Trusted Security

WISeKey delivers unparalleled digital identify solutions in a variety or forms to exceed your business needs

PKI SolutionManaged PKI Service WISeID

Delivered from WISeKey’sowned secure datacenter in Switzerland, ensuring the privacy of your data according to the highest standards

• Multiple certificate templates

• Isolated multi-tenant access

• Dedicated customer CAs

• WISeKey trusted CAs• Optional dedicated

infrastructure

App for personal digital ID and data protection for email, digital signatures and a personal vault for your digital assets

OR

The corporate version that allows you to secure the interactions with your employees and customers

Trusted provisioning and management of digital identities and transactions implemented in your own datacenter empowering your own solution. With all of the options from our managed PKI service delivered under your control

13

SECURE IOT SOLUTIONS

Trusted Security

WISeKey protects the connected world where increased vulnerabilities have emerged for hackers to destroy reputation, value, trust and more

Secure Solutions

WISeKey delivers vertically integrated solutions with secure identities and connections from the edge through to the cloud

Artificial Intelligence Powered

With the HIRO platform from aragofully integrated, the inclusion of autonomous decision-making drives massive operational efficiency

Access Control

Foundation Security

End-to-End Security

A unique and immutable device

identity and robust root of trust are the

foundation of IoT Security (OISTE.org

Root of Trust)

Design Security

Out of the box, simple, secure and

cost-effective device on-boarding

Ensure the real end-to-end privacy, integrity and

authenticity of your data in transit from

silicon to cloud

Guard sensitive information on your device with the need of a Secure Element

chip

14

ARTIFICIAL INTELLIGENCE1

5

Problem Solving

HIRO™ knowledge basedproblem solving platform is data driven for maximum decision-making accuracy and efficiency

Human Expertise Harnessed

The HIRO problem solving engine has the ability to capture human expertise and scale the decision processes to any application

Authentic Action

WiseKey delivers everything necessary to authenticate devices, objects, people and more, but with HIRO -authentication is extended to data and the actions and decisions themselves

Data PoolHIRO Engine Data Authentication

Human knowledge is normally hard to

incorporate in digital processes. Any application built on the platform can capture human expertise

and scale decision making. This is the only way to

apply experience in billion-device IoT scenarios

The HIRO platform has an oAuth based Identity that

is used to control access to any data point or AI

activity which is integrated with all of the WISeKey

services

A scalable data backend is the key to any data-driven business. The knowledge core can handle semantic, time-series and blob data at petabyte scale and has

the compliance and security features for

regulatory and enterprise operations

DIGITAL BRAND PROTECTION1

6

Brand and Revenue Protection

WISeKey safeguards against counterfeit products that rob revenues, diminish brand value and push consumers to the competition

Brand / Consumer Engagement

WISeKey solution delivers unlimited options for engagement, marketing and data acquisition to drive loyalty, next-time buys and create a fluid brand experience

Device Security

Not everything requires a consumer tap, but WISeKey delivers consumer confidence in relationship certainty, like printer/cartridge, power tool/battery, game station/controller

Brand ProtectionSecure NFCConsumer

EngagementUnparalleled NFC security

• Unilateral and Mutual Authentication with proprietary symmetric cryptographic algorithm

• Dynamic Signature over NDEF

• 64-bit secret key, 32-bit challenge, 32-bit response

• Unique 64-bit chip serial number

• Tamper detection• Opening Detection• Secure provisioning• Long range NFC

communication

Leverages your NFC enabled product and its’

product journey to directly engage consumers with

endless options to empower consumer

directed marketing, data acquisition, rewards, and a

personalized consumer experience

A digital identity for every item which enables

tracking and authentication throughout

the item’s lifecycle. This UID will be securely

encoded into the secure NFC tag

GROWTH STRATEGY

Well positioned WISeKey to address many global market verticals

17

Several growth avenues

Large addressable markets

Global client footprint

A complete suite of Digital Identity products

18

CUSTOMER & MARKET VERTICAL EXAMPLES

Energy and Smart Cities

Connected Cars

Luxury BrandsNetworking and Consumer

Medical Devices / Health Industrial / IT

CUSTOMERS BY GEOGRAPHY

Europe45%

North America43%

Asia Pacific11%

South America1%

Traditional business:Established in Europe; expanding into new geographies

Recent activities:Expanding in the US with OpSec partnership; India and Saudi Arabia are coming up to speed

Growth avenues:Global brand protection, European expansion, North American and LATAM

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FY 2019 Breakdown

GLOBAL EXPANSION

United States:

• Expanding the team and seasoned Executive has joined our Leadership Team as CRO

• Securing the communication systems for Allscripts, US leader in healthcare information technology solutions

• Partnership with OpSec Security IoT leader for fully integrated Brand Protection and Authentic Consumer Engagement solutions

Europe:

• Securing digid cantisense™ SARS-CoV-2 test for German health tech company Digital Diagnostics AG

• WISeKey and iStorage combining to secure digital environments for remote work

• Parrot leveraging WISeKey security solutions for the ultra-secure ANAFI drones

• Perpetual license agreement with Daimler AG (German multinational automotive corporation) for parts of its ISTANA PKI platform

Middle East:

• Securing Ensurity’s PasswordlessAccess to Microsoft Windows & Azure AD

• Established WISeKey Arabia, a JV with Saudi Advanced Technologies Company Ltd

China:

• Its RoT was accredited by 360 Security Browser, the leading internet browser solution in China, to provide Trusted SSL services

20

THREE-FOLD GROWTH BLUEPRINT2

1

Driving the Digital Transformation

Organic Growth1

Investing in embedded technology to stay at the market forefront• NanoSeal• VaulitIC for secure

radios• Drone solutions• Foresight• WISeID• WISeShelter• WISeTravel

Joint Ventures2

Expanding the ecosystem and opening adjacent technology and geographic markets• Artificial Intelligence

with arago• India JV• Saudi Arabia JV

Acquisitions3

Expanding portfolio through acquisitions focused on:• Technology

advancements• Market relevance• Integrated futures• Supporting the

vertical integration of IoT solutions

22

MANAGEMENT TEAM

Board of Directors

Eric PellatonPreviously CEO & ChairmanIsmeca, Inc.

Carlos Moreira Chairman & CEO,WISeKey

Philippe DoubrePresident and Secretary General, World Trade Center Geneva

Peter WardChief Financial Officer,WISeKey

David FergussonPresident & Co-CEO,The M&A Advisor

Jean-Philippe LadisaPartner & DirectorFiduciaire Wuarin & Chatton SA

▪ Recognized early-

stage pioneer in the

field of digital identity

▪ Chair World Economic

Forum Global Agenda

on Internet

▪ Founder of WISeKeyCarlos Moreira

Chairman & CEO

▪ Chartered management

accountant

▪ Significant international

experience in the IT,

FMCG, medical

equipment, plastics and

BioTech industries

▪ Joined WISeKey in 2008Peter Ward

CFO

▪ Proven growth engine

▪ Global executive

experience in

telecommunications,

mobility, brand

protection and

cybersecurity

▪ Joined WISeKey in 2020Ben Stump

Chief Revenue Officer

KEY FINANCIALS

23

STRONG CASH POSITION2

4

$9.6 $9.1$12.1

$15.4$0.6

$4.5

$2.7*

$9.6 $9.7

$16.6$18.1

0

2

4

6

8

10

12

14

16

18

31-Dec-17 31-Dec-18 31-Dec-19 30-Jun-20

Cash & cash equivalent and restricted cash($ in Million)

Cash Restricted cash Total* $2.7M restricted cash to be released in January 2021

25

2019 KEY FIGURES

• Listed its ADRs on the NASDAQ

• $6.4M R&D investment

• $22.7M revenue

• $8.2M net income, with a $31.1M gain on disposal of a business

• $0.23 EPS

INVESTMENT CONSIDERATIONS2

6

Serving the RAPIDLY-GROWING IoT cybersecurity and digital brand protection markets

UNIQUE CHIP-TO-AI-CLOUD PLATFORM simplifies connected objects, decisions and security

Core technology has HORIZONTAL ADOPTION across a wide range of industries

LARGE installed base of REPEAT & LONG-TERM blue-chip customers

Digital transformation (AI + IoT = AIoT) is increasing cybersecurity spending in every sector

SOLID FINANCIAL POSITION; Unique Trust Model and THREE-FOLD GROWTH STRATEGY

Lena CatiVice PresidentThe Equity Group, Inc.Email: lcati@equityny.comPhone : +1 212 836 9611

Investor Relations

CONTACT US

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APPENDIX

28

WISeKey International Holding share structure

29

Class A Shares

CHF 0.01 par value

1 share = 1 vote

40,021,988 issued*

Not listed

Class B Shares

CHF 0.05 par value

1 share = 1 vote

28,824,086 issued*

Listed on the SIX Swiss Stock Exchange

ADR listed on NASDAQ 1:5 Ratio

* Per register of Commerce as at 30 December 2020

2019 Financials 3

0

GAAP Consolidated Statement of Income / (Loss) 12 months ended

December 31, USD'000 2019

Net sales 22,652 Cost of sales (13,196)

Gross profit 9,456 Other operating income 180 Research & development expenses (6,422) Selling & marketing expenses (7,929) General & administrative expenses (15,789)

Total operating expenses (29,960)

Operating loss (20,504)

Non-operating income 1,918 Gain on derivative liability 214 Loss on debt extinguishment (233) Interest and amortization of debt discount (742) Non-operating expenses (3,670)

Loss before income tax expense (23,017) Expense/recovery (13)

Loss from continuing operations (23,030)

Income (loss) on discontinued operations 30,484

Net income / (loss) 7,454