# EDGAR Filing Document

**Accession Number:** 0001567264
**File Stem:** 0001628280-25-030728
**Filing Date:** 2025-6
**Character Count:** 22874
**Document Hash:** 846130c5d49c26ec9c113ddedf46817b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-25-030728.hdr.sgml**: 20250611

**ACCESSION NUMBER**: 0001628280-25-030728

**CONFORMED SUBMISSION TYPE**: FWP

**PUBLIC DOCUMENT COUNT**: 29

**FILED AS OF DATE**: 20250611

**DATE AS OF CHANGE**: 20250611

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INTENSITY THERAPEUTICS, INC.
- **CENTRAL INDEX KEY:** 0001567264
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 461488089
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** FWP
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 333-280681
- **FILM NUMBER:** 251040080

**BUSINESS ADDRESS:**
- **STREET 1:** 1 ENTERPRISE DRIVE, SUITE 430
- **CITY:** SHELTON
- **STATE:** CT
- **ZIP:** 06484
- **BUSINESS PHONE:** 203-221-7381

**MAIL ADDRESS:**
- **STREET 1:** 1 ENTERPRISE DRIVE, SUITE 430
- **CITY:** SHELTON
- **STATE:** CT
- **ZIP:** 06484

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Intensity Therapeutics, Inc.
- **DATE OF NAME CHANGE:** 20130117
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INTENSITY THERAPEUTICS, INC.
- **CENTRAL INDEX KEY:** 0001567264
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 461488089
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** FWP

**BUSINESS ADDRESS:**
- **STREET 1:** 1 ENTERPRISE DRIVE, SUITE 430
- **CITY:** SHELTON
- **STATE:** CT
- **ZIP:** 06484
- **BUSINESS PHONE:** 203-221-7381

**MAIL ADDRESS:**
- **STREET 1:** 1 ENTERPRISE DRIVE, SUITE 430
- **CITY:** SHELTON
- **STATE:** CT
- **ZIP:** 06484

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Intensity Therapeutics, Inc.
- **DATE OF NAME CHANGE:** 20130117

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A New Weapon in the War on Cancer P R E S E N TAT I O N NASDAQ: INTS Q2 2025 Issuer Free Writing Prospectus Filed Pursuant to Rule 433 Registration No. 333-280681 June 11, 2025

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2 2 This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995 that involve substantial risks and uncertainties, including statements regarding the development and regulatory status of our product candidates, such as statements with respect to our lead product candidate INT230-6, and the timing of clinical trials and data from those trials for our product candidates, and our discovery programs that may lead to our development of additional product candidates, the potential utility of our technology and therapeutic potential of our product candidates, the potential commercialization of any of our product candidates, and the sufficiency of our cash resources. All statements, other than statements of historical facts, contained in this presentation, including statements regarding our strategy, future operations, future financial position, future revenues, projected costs, prospects, plans and objectives of management, are forward-looking statements. The words "anticipate," "believe," "estimate," "expect," "intend," "may," "might," "plan," "predict," "project," "target," "potential," "will," "would," "could," "should," "continue," and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make as a result of various risks and uncertainties, including but not limited to: the initiation, timing, progress and results of future preclinical studies and clinical trials, and our research and development programs; our need to raise additional funding before we can expect to generate any revenues from product sales; our plans to develop and commercialize our product candidates, our potential inability to satisfy the Nasdaq Capital Market's requirements for continued listing and be subject to delisting; and other factors included in the section entitled "Risk Factors" in the Company's preliminary prospectus supplement filed with the SEC, the Company's Annual Report on Form 10-K for the year ended December 31, 2024 and in the Company's subsequent SEC filings. Any of these outcomes could cause our actual results to differ from those contained in the forward-looking statements of the Company's filings with the SEC. The forward-looking statements contained in this presentation reflect our current views as of the date of this presentation with respect to future events, and we assume no obligation to update any forward-looking statements except as required by applicable law. The Intensity Therapeutics, Inc. name and logo are our trademarks. We also own the service mark and the registered U.S. trademark for DfuseRx. The trademarks, trade names and service marks appearing in this presentation are the property of the Company. We have omitted the® and designations, as applicable, for the trademarks named in this presentation. Forward-Looking Statements

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3 3 This presentation highlights basic information about us and the proposed offering. Because it is a summary, it does not contain all of the information that you should consider before investing. We have filed a registration statement on Form S-3 (including a base prospectus) (File No. 333-280681) and accompanying preliminary prospectus supplement with the SEC for the offering to which this presentation relates. Before you invest, you should read the prospectus supplement and the accompanying prospectus in the registration statement (including the risk factors described therein) and other documents we have filed with the SEC for more complete information about us and the offering. You may access these documents for free by visiting EDGAR on the SEC Web site at http://www.sec.gov. The preliminary prospectus supplement is available on the SEC website at http://www.sec.gov. Alternatively, we or any underwriter participating in the offering will arrange to send you the prospectus if you contact ThinkEquity, Prospectus Department, 17 State Street, 41st Floor, New York, New York 10004, telephone: (877) 436-3673. This presentation shall not constitute an offer to sell, or the solicitation of an offer to buy, nor will there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of such state or jurisdiction. The offering will only be made by means of a prospectus supplement and related base prospectus. Free Writing Prospectus

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4 • Novel solid tumor cancer treatment approach using a new delivery technology that causes cancer cell death, leading to an immune response • Over 200 patients enrolled in 2 completed clinical trials (1 metastatic & 1 presurgical) • Ongoing studies: Phase 3 in metastatic sarcoma; Phase 2 in presurgical breast cancer • Veteran leadership with public company and phase 3 clinical development experience • Robust IP portfolio – 18 issued patents (3 in the US) and patent protection in 41 countries • Multiple industry, government and university hospital partnerships • Cost-efficient business model structured to create significant value Company Overview

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5 Three Key INT230-6 Components All are powders 1. SHAO (10 mg/mL) • A novel diffusion enhancer molecule that is soluble in both fat & water 2. CISPLATIN1 (0.5 mg/mL) – Commercial IV drug • Direct killing: Cause apoptotic cell death • Immune effects: Attracts and binds T-Cells 3. VINBLASTINE2 (0.1 mg/mL) – Commercial IV drug • Direct killing: Stop cell replication • Immune effects: Matures dendritic cell 1 Clin Cancer Res; 20(11) June 1, 2014 2Cancer Res; 2009 Sept 1: 69(17): 6987-6994 Mixes components in a vessel: • SHAO, Cisplatin, Vinblastine • +Water • +Excipients Result: • Cisplatin and Vinblastine form a molecular complex (non- covalent) with SHAO • This clear solution is soluble in fat and water INT230-6Manufacturing Process Sterile Filling INT230-6 When mixed, SHAO makes the cytotoxic agents soluble in fat and water at the same time INT230-6 A water-based drug designed for intratumoral use in fatty tumors

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6 Orphan Drug (Sarcoma INT230-6 components) • Tax credits for qualified clinical trials • Exemption from user fees • Potentially seven years of marketing exclusivity (post-approval) To be initiated, pending funding INVINCIBLE-5 (to be initiated post Phase 2) INVINCIBLE-4 (randomized Phase 2 study, INT230 + SOC compared to SOC) INVINCIBLE-3 (randomized Phase 3 study, INT230-6 monotherapy compared to Standard of Care (SOC))# INDICATION IN T2 30 -6 # New patient enrollment in INVINCIBLE-3 paused March 18, 2025 pending additional funding \* TNBC: triple negative breast cancer \*\*Pathological Complete Response (pCR): refers to the absence of any evidence of cancer in the breast tissue and regional lymph nodes after neoadjuvant therapy (chemotherapy given before surgery) Fast Track Designation (Metastatic Breast Cancer) • More frequent meetings with FDA • Priority and rolling reviews • Eligibility for accelerated approval Late-Stage Pipeline Programs For Metastatic and Presurgical Settings PRECLINICAL PHASE 1 PHASE 2 PHASE 3 Advanced Soft Tissue Sarcoma Neoadjuvant TNBC\* Metastatic TNBC\* Overall Survival Endpoint Pathological Complete Response (pCR)\*\* Endpoint for Accelerated Approval

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7 7 Sarcoma Upper panel: Gross appearance of mesenteric leiomyosarcoma on left and liver metastasis on right. Lower panel: Each lesion bi-valved. Tumor sizes typically up to 30 cm Breast Cancer – Lumpectomy Lumpectomy is the surgical resection of a breast tumor and some surrounding tissue. Tumor sizes typically up to 5 cm. Presurgical Breast Cancer Metastatic Sarcoma Solid Tumors – Why are these invaders so deadly? Many cancers typically lack blood vessels, are hard and dense, have high fat content and delivering intravenously or orally administered drugs into cancer cells is challenging Sarcoma tumor images from: Schoucair, Ramy et. al. (2018). International Journal of Surgery Case Reports. 49. 10.1016 Lumpectomy photo from: ihttps://icloudhospital.com/specialties/lumpectomy-partial- breast-resection

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8 \*Tumors contain high percentages of fat and are under high pressure CYTOTOXICS DRUG + dye in water Little to no drug dispersion in all tumors tested TUMOR cut in half Significant drug leakage Human pancreatic cancer in mouse model Drug NOT absorbed Human pancreatic cancer in mouse model TUMOR cut in half Significant dispersion in all tumors tested No leakage INT230-6: Fully absorbed INT230-6 + dye in water Dose is set by a tumor's volume or diameter TUMOR TUMOR Intensity Publication INT230-6: A Unique Anti-Cancer Therapy A Water Solution That Kills Fatty or Stromal Tumors and Does Not Harm Healthy Tissue

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9 9 Tumor Extent Extent of necrosis within the tumor after INT230-6 injections Patient #14: 3.9 cm invasive ductal cancer: 2 injections May 6 May 13 May 20 Final Pathology (significant necrosis ~85%) Final Pathology (significant necrosis ~95%) Cancer is mostly ghost cells Injection #1: Dose 7.4 cc Injection #2: Dose 14.8 cc Surgery Patient #20: 4.4 cm invasive lobular cancer: 1 injection May 27 June 16 Dose 21.3 cc Surgery The degree of tumor death is dependent on the total dose given per treatment Tumor post surgery Tumor post surgery Phase 2 Presurgical Breast Cancer Study (INVINCIBLE-2) 91 Women Women who waited from diagnosis to surgery without treatment, except for 1 to 3 doses of INT230-6

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10 10 Changes in the immune cell composition pre- and post-treatment in INT230-6 treated tumors Each bar represents an individual patient The most significant changes are increases in the tumors of CD4 memory T-cells and NK T-cells Baseline Biopsy Surgical Resection Phase 2 Presurgical Breast Cancer Study (INVINCIBLE-2) Differential Immune Cell Composition in Regions of Interest Within INT230-6 Treated Tumors

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11 Current Systemic Treatment Approach Dosing is set by patient's height and weight, or fixed dosing, though body size has no correlation with survival Our Treatment Approach INT230-6 dosing is set by amount of patient's tumor burden, dose for each tumor is set by its size Those patients with more disease have worse outcomes Patients with different tumor burdens receive a personalized dose to kill their tumors and induce a patient-specific immune response INT230-6 Dosing Paradigm is Personalized Current Dosing Methods are One-Size-Fits All It is unnecessary to inject all tumors, especially tumors <1 cm

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12 INT230-6 for Presurgical Triple-Negative Breast Cancer INVINCIBLE-4 Study

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13 13 CU-2 Triple-Negative Breast Cancer (TNBC) Is a Virulent Subtype Associated With Early Onset and Increased Risk of Early Recurrence  TNBC accounts for 15% to 20% of breast cancersa,b  At diagnosis: – Majority of tumors (~70%) are histologically grade 3 and highly proliferativee – Majority diagnosed at stage II (43%) or stage III (19%)  Recurs 1 to 3 years following diagnosis in lungs, liver, and brain a Arnedos M, et al. Ther Adv Med Oncol. 2012;4(4):195-210; b Bauer KR, et al. Cancer. 2007;109(9):1721-8; c Bray F, et al. CA Cancer J Clin. 2018;68:394-424; d Siegel RL, et al. CA Cancer J Clin. 2020;70:7-30; e Urru SAM, et al. BMC Cancer. 2018;18(1):56. Region New cases Deaths Worldwidec ~420,000 ~150,000 United Statesd ~56,000 ~10,000

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14 14 CU-6 Poor Survival Prognosis in High-Risk, Early-Stage TNBC Having Residual Disease (no pCR) After Neoadjuvant Chemotherapy a Cortazar P, et al. Lancet. 2014;384:164-172; b Sikov WM, et al. Presented at ASCO 2019 Abstract 591. CALGB 40603b N=426 Cortazar et al. 2014a N=1157 5-year EFS: ~84% with pCR ~50% with residual disease Number at risk Ev en t-f re e su rv iv al ,% 0 7 8 91 2 3 4 5 6 Time since randomization, years pCR No pCR 7 5-year EFS: 86.4% with pCR 57.5% with residual disease HR 0.28 (95% CI, 0.19, 0.43) 1 2 3 4 5 6 Time from randomization, years Number at risk pCR 389 349 310 250 166 88 29 11 1 pCR 205 201 185 174 164 139 78 17 No pCR 768 604 429 317 198 125 50 13 1 No pCR 221 199 153 132 117 38 54 14 0 100 90 80 70 60 50 40 30 20 10 0 HR 0.24 (95% CI, 0.18, 0.33) pCR No pCR100 90 80 70 60 50 40 30 20 10 0

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15 Enrollment Criteria (n = 54) • Tumors ≥ 1.5 cm, but no cT4d (less likely to have a pCR with KN522 • Female or Male ≥18Y • Any N stage (N0/N+ randomized) • M0; ECOG 0-1 • No anticoagulation • No bilateral BC • No contraindication to Keynote-522 Therapy Standard of Care (24 Weeks) Neoadjuvant Therapy Keynote- 522 Pembrolizumab q3W + 4 cycles Paclitaxel q1W + Carboplatin q1W and q3W 4 cycles Doxorubicin or Epirubicin + Cyclophosphamide q3W Cohort A (50% Patients) Phase 2 Neoadjuvant Triple Negative Breast Cancer (TNBC) Study (INVINCIBLE-4) Keynote-522 +/- INT230-6 Trial Design Biopsy & MRI 2 Injections of INT230-6 into primary tumor within 8 days Biopsy & MRI, then directly to Standard of Care Cohort B (50% Patients) Conducted In partnership with Standard of Care (24 Weeks) Same as Cohort A Endpoint Increase in Pathological Complete Response Rate (6 months after last subject initiated) MRI & Surgery MRI & Surgery Non-comparative pCR hypothesis testing trial design Biopsy & MRI

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16 Phase 2 INVINCIBLE-4 TNBC Study (IT-04) After 8 Days: live cancer has decreased significantly (as seen by lower contrast uptake) Tumor become necrotic – edges less active

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17 INT230-6 in Metastatic Cancers

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18 \*Two patients were in both the INT230-6 alone and INT230-6 + Keytruda cohorts IT-01 Study 110\* patients, 20 cancer types; 64 patients on INT230-6 alone, 30 on INT230-6+Keytruda and 18 of INT230-6 + Yervoy >95% of the active agents remain in the tumor relative to the drugs given IV The drug retention is independent of the cancer type, location or size Only 7 patients (10.9%) had a Grade 3 treatment emergent adverse events (TEAE) related to INT230-6 alone (no Grade 4 or 5) Most common drug-related adverse events were mild or moderate injection site pain, fatigue, and brief nausea Phase 1/2 Refractory or Metastatic Cancer Study (IT-01) Favorable Safety as Active Agents Remain in the Tumor

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19 Phase 1/2 Refractory or Metastatic Cancer Study (IT-01) Live cancer decreases significantly over time (as seen by lower contrast uptake) 6.15 cm 14.4 cm 3.18 cm 12.28 cm Sarcoma subject: 2 tumors at baseline: 21Mar 2018 FU3: 30Oct2018 Tumor become necrotic and cystic: volume increases then declines

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20 Abscopal effects may be underestimated; • No tumors under 1 cm in diameter were recorded, and • Many tumors above 1 cm were untracked per RECIST target guidelines Abscopal Responses - Maximum reduction in Longest Diameter of Uninjected Tumors 13 Tumors from 10 Subjects (Study IT-01)

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21 Kaplan Meier estimates Median OS improved with more drug administered relative to the patient's total tumor burden (TTB) > 40% (n=11) All patients (n=15) < 40% (n=4) Refractory or Metastatic Sarcoma Subpopulation Study (IT-01) Median Overall Survival (mOS): 21.3 Month All Patients; mOS not yet reached for dose > 40% of TTB

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22 22 Overall Survival (OS) of Sarcoma Patients is Poor After First Therapy fails Second and Third line Treatments – Trabectedin, Pazopanib and Eribulin Pe rc en t a liv e Months 93% of patients are deceased in less than three years\* \* Standard of care drug references: Trabectedin: Cancer. 2019 Aug 1;125(15):2610-2620 Eribulin: Lancet. 2016 Apr 16;387(10028):1629-37 Pazopanib: Lancet. 2012 May 19;379(9829):1879-86 50% of patients are deceased between 11 and 15 months\*

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23 Interims Looks At 20%, 40% and 60% of events (deaths) Final Data Readout At 80% of events (deaths) Enrollment Criteria • Subtypes: unresectable or metastatic • Liposarcoma • Undifferentiated pleomorphic sarcoma • Leiomyosarcoma • ≥ 18 years • ECOG PS ≤ 2 • 2L/3L • Measurable disease by RECIST 1.1 • At least one target tumor for injection > 2 cm in longest diameter 2:1 Primary Endpoint •Overall Survival (OS) Secondary Endpoints •OS for leiomyosarcoma •OS for liposarcoma Exploratory Quality of Life (QoL) n = 333 • Pazopanib: 800 mg PO QD or • Trabectedin: 1.5 mg/M2 BSA as a 24- hour IV infusion Q21 days or • Eribulin: 1.4 mg/M2 BSA IV on Days 1 and 8 q21 days EU 1.23 mg//M2 Standard of Care INT230-6 Monotherapy • INT230-6 every 14 days, 5 sessions • Maintenance every 12 weeks, for 22 months Dose of 1 mL of INT230-6 per every 2cc of an injected tumor (max 175 mL per session) 222 patients 111 patients Phase 3 Soft Tissue Sarcoma (STS) Study (INVINCIBLE-3) Trial Design – 32 sites contracted; study treating patients • No crossover allowed between SOC and INT230-6. • Disease progression will be determined by the World Health Organization (WHO) criteria in conjunction with scan data.

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24 2025 2026 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q Phase 3 Advanced Soft Tissue Sarcoma INVINCIBLE-3 Study Phase 2 Neoadjuvant TNBC INVINCIBLE-4 Study – Phase 2 INVINCIBLE-5 Study – Phase 3: Post-Phase 2 Phase 2 Presurgical Breast Cancer INVINCIBLE-2 Study – Completed Phase 1/2 Refractory or Metastatic Cancer IT-01 Study – Completed First Patient Enrolled Enrollment Completed\* Data Phase 2 Phase 3 Initiation Phase 2 Study Manuscript Published Assumes incremental funding in 2025 Anticipated Key Milestones Phase 2 Enrollment Ongoing Phase 3 Enrollment Pause 1Q25 (pending funding) \*Contingent on sufficient capital financing to fund clinical trials

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25 Pro Forma March 31, 2025\*(All Figures in Thousands) Cash and Cash Equivalents 2,829 Total Assets 4,965 Total Debt - Total Liabilities 2,731 Total Stockholder's Equity 2,234 Balance Sheet June 5, 2025 Shares Outstanding 18,398,202 Options (WAEP $4.10) 4,040,801 Warrants (WAEP: $1.70) 8,308,229 Fully Diluted Shares Outstanding 30,747,232 Capitalization Table Financial Highlights \*Cash and Cash Equivalents, Total Assets, and Total Stockholder's Equity adjusted to include $1.9 million of net proceeds from the April 2025 financing

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26 Lewis H. Bender, MIT ChE, MS, MA, MBA • Drug delivery expertise Preclinical through Phase 3 • Public biotech company CEO experience • Public CFO, 30 years, • Extensive M&A and financing transactions John Wesolowski, MBA, CPA Lewis H. Bender Founder and CEO Daniel Donovan CEO, rareLifeSolutions, Inc. Emer Leahy, Ph.D. CEO, PsychoGenics Inc. Mark A. Goldberg, MD CEO, Allucent Executive Chairman, THREAD Research Thomas Dubin Former Chief Counsel, Alexion Founder and CEO Principal Accounting Officer and Controller Chief Financial Officer Barbara Mohl VP, Human Resources Vice President, Clinical Operations Kimberly Guedes, RN, MBA Joseph Bernadino, Josh Rodriques Manufacturing API and Drug Product Rita Cooney Ph.D. Analytical Chemistry CEO, CTO, VP, BD & Manufacturing CEO Manufacturing Joseph Talamo, CPA BOARD OF DIRECTORSKEY MANAGEMENT Ian B. Walters, MD Chief Medical Officer • 25 years experience • Global Phase 3 Experience Centrexion James M. Ahlers EVP, Corporate Strategy Management Team Extensive Oncology, Drug Development, and Public Company Experience Doranne Frano VP, Regulatory & Quality

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27 Unmet need Poor survival prognosis in target indications using standard of care Diffusion-based MOA Utilizes a novel diffusion enhancer molecule that is soluble in both fat & water Two Ongoing Trials Phase 2 in presurgical breast cancer, Phase 3 in metastatic sarcoma Favorable Safety No grade 4 or grade 5 treatment emergent adverse effects displayed Metastatic Disease Significant necrosis seen in treated tumors post surgery, abscopal effects also present Company Highlights

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28 INTENSITY THERAPEUTICS A NEW WEAPON IN THE WAR ON CANCER Thank you!

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