Aptevo Therapeutics : October 11, 2021 Investor Presentation

APVO

11 October 2021

Aptevo Therapeutics

A Leading Bispecific Antibody Company

NASDAQ: APVO

Forward-Looking Statements

This presentation includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, including, without limitation, Aptevo's expectations about the activity, efficacy and safety of its therapeutic candidates and potential use of any such candidates as therapeutics for treatment of disease, advancement of its clinical trials and its expectations regarding the effectiveness of its ADAPTIR and ADAPTIR-FLEX platforms, and any other statements containing the words "may," "believes," "expects," "anticipates," "hopes," "intends," "optimism," "potential," "designed," "engineered," "breakthrough," "innovative," "innovation," "promising," "plans," "forecasts," "estimates," "will" and similar expressions are intended to identify forward-looking statements. These forward- looking statements are based on Aptevo's current intentions, beliefs, and expectations regarding future events. Aptevo cannot guarantee that any forward-looking statement will be accurate. Investors should realize that if underlying assumptions prove inaccurate or unknown risks or uncertainties materialize, actual results could differ materially from Aptevo's expectations. Investors are, therefore, cautioned not to place undue reliance on any forward-looking statement.

There are several important factors that could cause Aptevo's actual results to differ materially from those indicated by such forward-looking statements, including a deterioration in Aptevo's business or prospects; adverse developments in clinical development, including unexpected safety issues observed during a clinical trial; adverse developments in the U.S. or global capital markets, credit markets or economies generally; and changes in regulatory, social, and political conditions. For instance, actual results may differ materially from those indicated by such forward- looking statements as a result of various important factors, including the uncertainties inherent in the initiation and enrollment of future clinical trials, including availability of patients meeting enrollment criteria, availability and timing of data from ongoing clinical trials, expectations for the timing and steps required in the regulatory review process, expectations for regulatory approvals, the impact of competitive products, actions of activist stockholders, our ability to enter into agreements with strategic partners and other matters that could affect the availability or commercial potential of the Company's product candidates, business or economic disruptions due to catastrophes or other events, including natural disasters or public health crises such as the novel coronavirus (referred to as COVID-19). These risks are not exhaustive, Aptevo faces known and unknown risks. Additional risks and factors that may affect results are set forth in Aptevo's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the fiscal year ended December 31, 2020, and its subsequent reports on Form 10-Q and current reports on Form 8-K. The foregoing sets forth many, but not all, of the factors that could cause actual results to differ from Aptevo's expectations in any forward-looking statement. Any forward-looking statement speaks only as of the date of publication of this presentation, and, except as required by law, Aptevo does not assume any obligation to update any forward-looking statement to reflect new information, events, or circumstances.

The foregoing sets forth many, but not all, of the factors that could cause actual results to differ from our expectations in any forward-looking statement. Investors should consider this cautionary statement, as well as the risk factors identified in our periodic reports filed with the SEC, when evaluating our forward-looking statements.

Aptevo™, ADAPTIR™ and any and all Aptevo Therapeutics Inc. brand, product, service, and feature names, logos, and slogans are trademarks or registered trademarks of Aptevo Therapeutics Inc. or its subsidiaries in the United States or other countries. All rightsreserved.

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Aptevo at-a-Glance

(1)

Data as of May 26, 2021

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(2)

Active IND, Currently enrolling patients

Experienced Leadership

Senior Management

Marvin White - President & CEO

Emergent Director; Former CFO, St. Vincent's Health; Former Executive Director & CFO, Lilly USA

Jeff Lamothe - SVP, CFO

Former Emergent VP, Finance; Former CFO, Cangene

Corporation

Fatih Uckun M.D. Ph.D. - Consultant and Chief Clinical Advisor

Former Stohlman Scholar of Leukemia Society of America; Former Professor at USC and UM; Member ASCI

Jane Gross, Ph.D. - Consultant and CSO

Former Emergent VP, Research/Non-Clinical Development; Former VP Immunology Research ZymoGenetics Inc.

SoYoung Kwon - SVP, GC, Corporate Affairs &

HR

Former SVP, GC and Corporate Secretary, AGC Biologics

Daphne Taylor- VP, Finance

Former Chief Financial Officer at BioLife Solutions, VP, Chief Accounting Officer & Controller at Cardiac Science Corporation

Board of Directors

Marvin White

Emergent Director; Former CFO, St. Vincent's Health; Former Executive Director & CFO, Lilly USA

Fuad El-Hibri

Founder, Executive Chairman, Emergent BioSolutions

Daniel Abdun-Nabi

Former President & CEO, COO, Emergent BioSolutions, Former General Counsel, IGEN International, Inc.

Grady Grant, III

Former Vice President of Sales, Tissue Tech Limited; Former Reckitt Benckiser Group; Former Eli Lilly & Co.

Zsolt Harsanyi, Ph.D.

N-Gene Research Labs; Exponential Biotherapies; Porton Int'l

Barbara Lopez Kunz

DIA; Battelle; Thermo Fisher Scientific; ICI/Uniqema

John Niederhuber, M.D.

Inova Translational Medicine Institute; National Cancer Institute; Johns Hopkins University

Extensive R&D, Manufacturing, Commercial

and Financial Expertise and Experience

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Robust Pipeline: Potential for Multiple Shots on

Goal in Hematologic Malignancies and Solid Tumors

Product/

Technology

Potential

Pre-

Clinical Development Stage

Marketed

Milestones/Highlights

Candidate

Indications

Clinical

Phase

Phase

Phase

Target

I

II

III

APVO436

Redirected T cell

Phase 1 dose escalation

AML/MDS

reported positive results;

Cytotoxicity

CD3/CD123

Part 2 dose expansion

(RTCC)

active and recruiting

ALG.APV-527*

T cell

Solid

Advancing into clinical

development in solid

4-1BB/5T4

Co-Stimulation

Tumors

tumors expressing 5T4

APVO603

Dual T cell

Solid

Unique asset for use in

solid tumors, APVO603

4-1BB/OX40

Co-stimulation

Tumors

lead candidate identified

APVO442

Redirected T cell

Prostate

Low affinity CD3,

PSMA/CD3

Cytotoxicity

Cancer

advancing lead candidate

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Disclaimer

Aptevo Therapeutics Inc. published this content on 11 October 2021 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 11 October 2021 18:11:01 UTC.