HARNESSING THE POWER OF MACROPHAGES

May 2024

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Statements in this slide deck about future expectations, plans and prospects, as well as any other statements regarding matters that are not historical facts, may constitute "forward-looking statements" within the meaning of The Private Securities Litigation Reform Act of 1995. These statements include, but are not limited to,

statements relating to Carisma's business, strategy, future operations, cash runway, the advancement of Carisma's product candidates and product pipeline, and clinical development of Carisma's product candidates, including expectations regarding timing of initiation and results of clinical trials. The words ""anticipate," "believe," "contemplate," "continue," "could," "estimate," "expect," "goals," "intend," "may," "might," "outlook," "plan," "project," "potential," "predict," "target," "possible," "will," "would," "could," "should," and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.

Any forward-looking statements are based on management's current expectations of future events 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, (i) Carisma's ability to obtain, maintain and protect its intellectual property rights related to its product candidates; (ii) Carisma's ability to advance the development of its product candidates under the timelines it anticipates in planned and future clinical trials and with its current financial and human resources; (iii) Carisma's ability to replicate in later clinical trials positive results found in preclinical studies and early-stage clinical trials of its product candidates;

  1. Carisma's ability to realize the anticipated benefits of its research and development programs, strategic partnerships, research and licensing programs and academic and other collaborations; (v) regulatory requirements or developments and Carisma's ability to obtain and maintain necessary approvals from the U.S. Food and Drug Administration and other regulatory authorities; (vi) changes to clinical trial designs and regulatory pathways; (vii) risks associated with Carisma's ability to manage expenses; (viii) changes in capital resource requirements; (ix) risks related to the inability of Carisma to obtain sufficient additional capital to continue to advance its product candidates and its preclinical programs; and (x) legislative, regulatory, political and economic developments. . For a discussion of these risks and uncertainties, and other important factors, any of which could cause Carisma's actual results to differ from those contained in the forward-looking statements, see the "Risk Factors" set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2023, as well as discussions of potential risks, uncertainties, and other important factors in Carisma's other recent filings with the Securities and Exchange Commission. Any forward-looking statements that are made in this presentation speak as of the date of this presentation. Carisma undertakes no obligation to revise the forward-looking statements or to update them to reflect events or circumstances occurring after the date of this presentation, whether as a result of new information, future developments or otherwise, except as required by the federal securities laws.

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Pioneering engineered macrophages in

oncology and beyond

Harnessing the Power of Macrophages

Developing unique and transformative cell therapies for patients with devastating diseases

+

+

+

• Focused development of CT-0525(CAR-Monocyte), which we believe is best suited to deliver benefit to

HER2

patients with HER2 over-expressing solid tumors refractory to available treatments

Program

CT-0508 trial to conclude post Regimen 2 of sub-study in combination with pembrolizumab

CT-0525 data is expected end of 2024

Beyond

In Vivo Oncology: Advancing multiple targets in our in vivo CAR-M program in collaboration with Moderna

Fibrosis: Advancing an engineered macrophage in liver fibrosis, with preclinical proof of concept data

HER2*

expected in 2Q 2024

• Cash runway into 3Q 2025, funding multiple clinical and preclinical catalysts

Corporate

Strong IP position

• Potential for collaborations (except in vivo oncology)

  • In late March 2024, Carisma made the decision to pause further development of CT-1119, pending additional financing MoA: Mechanism of Action

4

CAR-M: Differentiated from CAR-T and CAR-NK

CAR-M has the potential for key solid tumor advantages over both

CAR-T

CAR-NK

CAR-M

Mechanism of Action

Effector Cell

CD4/CD8 T cells

Natural Killer Cells

Macrophages or Monocytes

Persistence

High

Low

Intermediate

Trafficking Potential

Low

Low

High

TME Activation

Low

Low

High

Antigen Presentation

None

None

High

Epitope Spreading

Low

Low

High

Safety

Chemotherapy Conditioning

Yes

Yes

No

CRS / ICANS

High / High

Low / Low

Low / Low

Manufacturing

Manufacturing Time

Days to weeks

Days to weeks

Monocyte: 1 day

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First-in-Class Pipeline

Multiple value inflection points across therapeutic areas and modalities

THERAPEUTIC

PRODUCT

PLATFORM

DISCOVERY PRE-CLINICAL

PHASE 1

PHASE 2

PHASE 3

COLLABORATOR

AREA

CANDIDATE

Ex Vivo Oncology

CT-0525

CAR-Monocyte

4Q 2024: Initial data1

HER2+

(1st Gen CAR)

solid tumors

CT-0508*

CAR-Macrophage

2Q 2024: Combination data1

(1st Gen CAR)

`

Mesothelin+

CT-1119**

CAR-Monocyte

solid tumors

(Next-Gen CAR2)

In Vivo Oncology

Solid Tumor Antigen3

CAR-Macrophage +

mRNA/LNP

Oncology

CAR-Macrophage +

4 Additional Targets4

mRNA/LNP

Fibrosis and Immunology

Liver Fibrosis

TBD

Engineered

2Q 2024: Preclinical proof of concept data1

macrophage

  • In late March 2024, Carisma made the decision to cease further development of CT-0508, including monotherapy and in combination with pembrolizumab
  • In late March 2024, Carisma made the decision to pause further development of CT-1119, pending additional financing

1. Anticipated milestones; 2. Includes SIRPα knockdown technology; 3. Target undisclosed

4. Moderna collaboration has identified 5 total oncology targets, with the option to identify an additional 7 oncology targets; First lead candidate was nominated in 4Q 2023

6

Drive to 2025

Leverage world-leading macrophage engineering platform to deliver three product opportunities

Program

2024 Tactical Plan

2025 Objectives

HER2 CAR-M

CT-05251

Safety Study Cohort 1:

3 Billion Cells

Phase II/III Regimen Identified2

CT-05251

Safety Study Cohort 2:

10 Billion Cells

In vivo CAR-M

IND-enabling activities for lead candidate

(Collaboration with Moderna)

Pre-clinical studies for additional identified targets

Undisclosed Development &

Regulatory Milestones

Liver Fibrosis

Pre-clinicalproof-of-concept studies Development candidate identified

IND-enabling Activities

1. CAR-Monocyte; 2. In late March 2024, the Company selected CAR-Monocyte approach for the Phase II/III Regimen Identified

7

Targeting HER2:

CT-0525 and CT-0508

HER2 Development Strategy

CT-0525 selected as HER2 product candidate, with additional considerations to be informed by ongoing studies

Demonstrate Safety, Tolerability,

Feasibility & MOA:

CAR-Macrophage(CT-0508*)

Phase 1: No Further Data Expected

Overcome T Cell Exhaustion:

CAR-Macrophage(CT-0508) +

Pembrolizumab

Phase 1: Data Expected 2Q'24

Increase Dose:

CAR-Monocyte(CT-0525)

Phase 1: Initial Data Expected 4Q'24

Potential Registrational Profile

Cell

Monotherapy

Line of

Tumor

Dose

vs. Combo

Type

Therapy

Type

Therapy

MOA: Mechanism of Action

* In late March 2024, Carisma made the decision to cease further development of CT-0508, including monotherapy and in combination with pembrolizumab

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CT-0525

CT-0525: HER2 Targeted CAR-Monocyte(Macrophage Precursor)

Potential to significantly improve upon the observed biological activity of CT-0508

Highlights

Key Manufacturing Advantages Over CAR-Macrophage

  • Higher cell numbers
  • Faster manufacturing (1 day)
  • Reduced COGS

Potential Biological Advantages Over CAR-Macrophage

  • 2,000-foldincreased exposure
    • Cell count, trafficking, and persistence
  • Increased potency
    • Killing, cytokine release, and antigen presentation
  • Dosing flexibility

Development Plan & Timeline

IND cleared

• First patient expected to be treated in 2Q 2024

  • Initial data expected in 4Q 2024

CT-0525

CAR COMPONENTS

Humanized anti-HER2 scFv

CD8 Hinge

CD8 TM

CD3-zeta

TECHNICALS: CT-0508

CT-0525 Product Description

Cells

Autologous monocytes

Vector

Ad5f35

Phenotype

M1

CAR

1st Generation

* Compared to CAR-Macrophage

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Carisma Therapeutics Inc. published this content on 01 May 2024 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 02 May 2024 12:58:29 UTC.