PEPG PepGen Inc

PepGen Inc. (Nasdaq: PEPG), a clinical-stage biotechnology company advancing the next generation of oligonucleotide therapies with the goal of transforming the treatment of severe neuromuscular and neurological diseases, today announced that it will present at the 2023 American Academy of Neurology (AAN) Annual Meeting, taking place on April 22-27, 2023 in Boston, Massachusetts.

Oral Presentation:

Title: Preclinical Data Supporting the Development of an Enhanced Delivery Oligonucleotide (EDO) for the Treatment of Myotonic Dystrophy Type 1 (DM1)Program Number: S48.001Session Topic: Therapeutics for Muscle Disease Date & Time: Thursday, April 27, 2023 at 3:30pm ETPresenter: Ashling Holland, Ph.D., Director of Preclinical Development

Poster Presentation:

Title: Preclinical Data Supporting the Development of an Enhanced Delivery Oligonucleotide (EDO) for the Treatment of Duchenne Muscular Dystrophy (DMD)Program Number: P3.002Session Topic: Neuromuscular Disease: Inherited Muscle Disorders 1 Date & Time: Sunday, April 23, at 5:30pm ET Presenter: Ashling Holland, Ph.D., Director of Preclinical Development

Title: PGN-EDO51, an Enhanced Delivery Oligonucleotide (EDO) for the Treatment of Duchenne Muscular Dystrophy (DMD): Results of a Phase 1 Study in Healthy VolunteersProgram Number: P3.004Session Topic: Neuromuscular Disease: Inherited Muscle Disorders 1 Date & Time: Sunday, April 23, at 5:30pm ETPresenter: Michelle Mellion, M.D., Senior Vice President, Head of Clinical Development

Title: Design of a Phase 1, Placebo-Controlled Study to Assess the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single-Ascending Doses of PGN-EDODM1 in Adult Participants with Myotonic Dystrophy Type 1 (DM1)Program Number: P6.004Session Topic: Neuromuscular Disease: Inherited Muscle Disorders 3 Date & Time: Monday, April 24, at 5:30pm ETPresenter: Michelle Mellion, M.D., Senior Vice President, Head of Clinical Development

About PepGen

PepGen Inc. is a clinical-stage biotechnology company advancing the next-generation of oligonucleotide therapies with the goal of transforming the treatment of severe neuromuscular and neurological diseases. PepGen’s Enhanced Delivery Oligonucleotide, or EDO, platform is founded on over a decade of research and development and leverages cell-penetrating peptides to improve the uptake and activity of conjugated oligonucleotide therapeutics. Using these EDO peptides, we are generating a pipeline of oligonucleotide therapeutic candidates that target the root cause of serious diseases.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. These statements may be identified by words such as “aims,” “anticipates,” “believes,” “could,” “estimates,” “expects,” “forecasts,” “goal,” “intends,” “may,” “plans,” “possible,” “potential,” “seeks,” “will,” and variations of these words or similar expressions that are intended to identify forward-looking statements. Any such statements in this press release that are not statements of historical fact may be deemed to be forward-looking statements. These forward-looking statements include, without limitation, statements regarding the potential therapeutic benefits and safety profile of our candidates, initiation of the Phase 2 studies in PGN-EDO51 and the Phase 1 study in PGN-EDODM1, our interpretation of clinical and preclinical study results and how they may impact our programs, the filing of an IND application for PGN-EDODM1, scheduled participation and presentation of information in conferences and statements about our clinical and preclinical programs, product candidates, expected cash runway, achievement of milestones, and corporate and clinical/preclinical strategies.

Any forward-looking statements in this press release are based on current expectations, estimates and projections only as of the date of this release and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to that we may fail to successfully initiate or complete our planned clinical trials for PGN-EDO51 and and PGN-EDODM1 and preclinical studies of other product candidates or to obtain regulatory approval before commercialization for marketing of such products; our interpretation of clinical and preclinical study results may be incorrect; our product candidates may not be safe and effective; there may be delays in regulatory approval or changes in regulatory framework that are out of our control; we may not be able to nominate new drug candidates within the estimated timeframes; our estimation of addressable markets of our product candidates may be inaccurate; we may need additional funding before the end of our expected cash runway and may fail to timely raise such additional required funding; more efficient competitors or more effective competing treatment may emerge; we may be involved in disputes surrounding the use of our intellectual property crucial to our success; we may not be able to take advantage of certain accelerated regulatory pathways; we may not be able to attract and retain key employees and qualified personnel; earlier study results may not be predictive of later stage study outcomes; we may encounter liquidity distress due to failure of financial institutions with which we maintain relationship; and we are dependent on third parties for some or all aspects of our product manufacturing, research and preclinical and clinical testing. Additional risks concerning PepGen’s programs and operations are described in its registration statement on Form S-1, which is on file with the SEC, and in its most recent annual report on Form 10-K to be filed with the SEC. PepGen explicitly disclaims any obligation to update any forward-looking statements except to the extent required by law.

Investor Contact

Laurence Watts

Gilmartin Group

Laurence@gilmartinir.com

Media Contact

Sarah Sutton

Argot Partners

pepgen@argotpartners.com