# EDGAR Filing Document

**Accession Number:** 0001819411
**File Stem:** 0001104659-26-058649
**Filing Date:** 2026-5
**Character Count:** 157910
**Document Hash:** c58f56dc45aa57ed3da6adc0e917725c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-058649.hdr.sgml**: 20260511

**ACCESSION NUMBER**: 0001104659-26-058649

**CONFORMED SUBMISSION TYPE**: 10-Q

**PUBLIC DOCUMENT COUNT**: 88

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260511

**DATE AS OF CHANGE**: 20260511

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Gain Therapeutics, Inc.
- **CENTRAL INDEX KEY:** 0001819411
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 851726310
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 10-Q
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40237
- **FILM NUMBER:** 26963231

**BUSINESS ADDRESS:**
- **STREET 1:** 4800 HAMPDEN LANE
- **STREET 2:** SUITE 200
- **CITY:** BETHESDA
- **STATE:** MD
- **ZIP:** 20814
- **BUSINESS PHONE:** (301) 500-1556

**MAIL ADDRESS:**
- **STREET 1:** 4800 HAMPDEN LANE
- **STREET 2:** SUITE 200
- **CITY:** BETHESDA
- **STATE:** MD
- **ZIP:** 20814

?xml version='1.0' encoding='ASCII'? GAIN THERAPEUTICS, INC_March 31, 2026

[**Table of Contents**](#TOC)

------

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 10-Q**

**(Mark one)**

&nbsp;&nbsp;&nbsp;&nbsp;**☒** **QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934** 

**For the quarterly period ended March 31, 2026**

**or**

☐ **TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the transition period from &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; to &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;** 

**Commission File Number: 001-40237**

## GAIN THERAPEUTICS, INC .
**(Exact name of registrant as specified in its charter)**

---

| | |
|:---|:---|
| **Delaware** | **85-1726310** |
| (State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.) |
| **4800 Montgomery Lane, Suite 220** |  |
| **Bethesda, Maryland** | **20814** |
| (Address of principal executive offices)  | (Zip Code) |

---

**(301) 500-1556**

(Registrant's telephone number, including area code)

**Securities registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| Common Stock, par value $0.0001 per share | GANX | Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ☒ Yes&nbsp;&nbsp;&nbsp;&nbsp;☐ No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). ☒ Yes&nbsp;&nbsp;&nbsp;&nbsp;☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

---

| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☐ | Accelerated filer | ☐ |
| Non-accelerated filer | ☒ | Smaller reporting company | ☒ |
| Emerging growth company | ☒ |  |  |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).☐ Yes ☒ No

As of April 30, 2026, the registrant had 42,654,038 shares of common stock outstanding.

------

[**Table of Contents**](#TOC)

**TABLE OF CONTENTS**

---

| | | |
|:---|:---|:---|
| [**PART I**](#PARTIFINANCIALINFORMATION_96126) | [**FINANCIAL INFORMATION**](#PARTIFINANCIALINFORMATION_96126) | 5 |
| [Item 1](#Item1FinancialStatements_593207) | [Condensed Consolidated Financial Statements](#Item1FinancialStatements_593207) | 5 |
|  | [Condensed Consolidated Balance Sheets (Unaudited)](#CONDENSEDCONSOLIDATEDBALANCESHEETS_95929) | 5 |
|  | [Condensed Consolidated Statements of Operations (Unaudited)](#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATI) | 6 |
|  | [Condensed Consolidated Statements of Comprehensive Loss (Unaudited)](#CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINC) | 7 |
|  | [Condensed Consolidated Statements of Stockholders' Equity (Unaudited)](#CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHO)  | 8 |
|  | [Condensed Consolidated Statements of Cash Flows (Unaudited)](#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLO) | 10 |
|  | [Notes to Condensed Consolidated Financial Statements (Unaudited)](#NOTESTOTHEUNAUDITEDCONDENSEDCONSOLIDATED) | 11 |
| [Item 2](#Item2ManagementsDiscussionandAnalysisofF) | [Management's Discussion and Analysis of Financial Condition and Results of Operations](#Item2ManagementsDiscussionandAnalysisofF) | 30 |
| [Item 3](#Item3QuantitativeandQualitativeDisclosur) | [Quantitative and Qualitative Disclosures About Market Risk](#Item3QuantitativeandQualitativeDisclosur) | 40 |
| [Item 4](#Item4ControlsandProcedures_223880) | [Controls and Procedures](#Item4ControlsandProcedures_223880) | 40 |
| [**PART II**](#PARTIIOTHERINFORMATION_100022) | [**OTHER INFORMATION**](#PARTIIOTHERINFORMATION_100022) | 41 |
| [Item 1](#Item1LegalProceedings_253625) | [Legal Proceedings](#Item1LegalProceedings_253625) | 41 |
| [Item 1A](#Item1ARiskFactors_807630) | [Risk Factors](#Item1ARiskFactors_807630) | 41 |
| [Item 2](#Item2UnregisteredSalesofEquitySecurities) | [Unregistered Sales of Equity Securities and Use of Proceeds](#Item2UnregisteredSalesofEquitySecurities) | 41 |
| [Item 3](#Item3DefaultsUponSeniorSecurities_510979) | [Defaults Upon Senior Securities](#Item3DefaultsUponSeniorSecurities_510979) | 41 |
| [Item 4](#Item4MineSafetyDisclosures_307984) | [Mine Safety Disclosures](#Item4MineSafetyDisclosures_307984) | 41 |
| [Item 5](#Item5OtherInformation_625496) | [Other Information](#Item5OtherInformation_625496) | 42 |
| [Item 6](#Item6Exhibits_508272) | [Exhibits](#Item6Exhibits_508272) | 43 |
| [Signatures](#SIGNATURES_158238) | [Signatures](#SIGNATURES_158238) | 44 |

---

[**Table of Contents**](#TOC)

#### CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
This Quarterly Report on Form 10-Q (the "Quarterly Report") contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts and are often characterized by the use of words such as "aim," "believe," "can," "could," "potential," "plan," "predict," "goals," "seek," "should," "may," "may have," "would," "estimate," "continue," "anticipate," "intend," "expect" or the negative of these terms, other comparable terminology or by discussions of strategy, plans or intentions. These include, but are not limited to, statements about:

● our ability to continue as a going concern and our needs for additional financing;

● our ability to maintain compliance with the continued listing requirements of the Nasdaq Stock Market LLC ("Nasdaq");

● our ability to accurately estimate anticipated operating losses, expenses, future revenues, capital requirements, including our anticipated cash runway;

● the initiation, timing, progress and results of our current and future preclinical studies and clinical trials and our research and development programs;

● the success of our efforts to expand our pipeline of product candidates and develop marketable products through the use of our Magellan™ platform;

● our ability to develop, obtain regulatory approval for and commercialize our current and future product candidates;

● our expectations regarding collaborations and other agreements with third parties and their potential benefits;

● the timing of investigational new drug, or IND, submissions, initiation of preclinical studies and clinical trials, and timing of expected clinical results for our product candidates;

● our success in early preclinical studies, which may not be indicative of results obtained in later studies or clinical trials;

● the potential benefits of our product candidates;

● our ability to identify patients with the diseases treated by our product candidates, and to enroll healthy volunteers and patients in clinical trials;

● our ability to obtain, maintain and protect our intellectual property;

● our reliance upon intellectual property licensed from third parties, including the license to use certain components of the Magellan™ platform;

● our ability to identify, recruit and retain key personnel;

● developments or projections relating to our competitors or our industry;

● the impact of laws and regulations;

● our expectations regarding government and third-party payor coverage and reimbursement;

● our expectations regarding the time during which we will be an emerging growth company under the Jumpstart Our Business Startups ("JOBS") Act;

[**Table of Contents**](#TOC)

● the impact of liquidity concerns at and failures of banks and other financial institutions, capital market instability, exchange rate fluctuations, supply chain disruptions and increases in commodity, energy and fuel prices;

● the impacts of pandemics or endemics on our operations, access to capital, research and development and clinical trials and potential disruption in the operations and business of third-party manufacturers, contract research organizations, other service providers, and collaborators with whom we conduct business;

● the impact of other global events, including political instability, natural disaster, events of terrorism and wars, such as the ongoing conflict between Russia and Ukraine and between the United States and Iran and elsewhere in the Middle East;

● the impacts of increased trade tariffs, import quotas or other trade restrictions or measures taken by the United States and other countries, including changes in U.S. trade policies that may be made by the presidential administration; and

● other factors and assumptions described in this Quarterly Report.

You should read this Quarterly Report with the understanding that such forward-looking statements involve known and unknown risks, expectations, uncertainties, assumptions, estimates and projections about our company and other important factors that could cause our actual results, performance or achievements, actual industry results, or other actual results or events to differ materially from historical results, from any plans, intentions, or expectations disclosed in such forward-looking statements or from any future results, performance, achievements or other events expressed, suggested or implied by such forward-looking statements. Therefore, you should not rely on any forward-looking information or statements as predictors of future results or events. Factors that could cause or contribute to such differences in results and events include, without limitation, those specifically addressed under the headings "Risk Factors" and "Management's Discussion and Analysis of Financial Conditions and Results of Operations" in this Quarterly Report and in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025 ("Annual Report") filed with the Securities and Exchange Commission ("SEC") on March 26, 2026. The effect of these factors is difficult to predict. In addition, factors other than these could also adversely affect our results, and the reader should not consider these factors to be a complete set of all potential risks or uncertainties. New factors emerge from time to time, and management cannot assess the impact of any such factor on our business or the extent to which any factor, or combination of factors, may cause results or events to differ materially from those contained in any forward-looking statements.

Any forward-looking statements included herein speak only as of the date of this Quarterly Report, and we undertake no obligation to update any forward-looking information or statements for any reason after the date of this Quarterly Report to conform these statements to actual results or changes in expectations, except as required by law. All forward-looking statements attributable to us are expressly qualified by the foregoing cautionary statements.

[**Table of Contents**](#TOC)

#### Item 1. Condensed Consolidated Financial Statements.

#### PART I—FINANCIAL INFORMATION

#### GAIN THERAPEUTICS, INC.

#### CONDENSED CONSOLIDATED BALANCE SHEETS
**(UNAUDITED)**

---

| | | |
|:---|:---|:---|
|  | **March 31,** <br>**2026** | **December 31,** <br>**2025** |
| **Assets** |  |  |
| Current assets: |  |  |
| &nbsp;&nbsp;Cash and cash equivalents | $16539222 | $20837628 |
| &nbsp;&nbsp;Tax credits | 231003 | 179701 |
| &nbsp;&nbsp;Prepaid expenses and other current assets | 1451543 | 1219809 |
| Total current assets | 18221768 | 22237138 |
| Noncurrent assets: |  |  |
| &nbsp;&nbsp;Property and equipment, net | 54435 | 74916 |
| &nbsp;&nbsp;Internal-use software, net | 90045 | 102837 |
| &nbsp;&nbsp;Operating lease right-of-use assets | 300576 | 334090 |
| &nbsp;&nbsp;Restricted cash | 36085 | 36296 |
| &nbsp;&nbsp;Long-term deposits and other noncurrent assets | 35555 | 33698 |
| Total noncurrent assets | 516696 | 581837 |
| Total assets | $18738464 | $22818975 |
| **Liabilities and stockholders' equity** |  |  |
| Current liabilities: |  |  |
| &nbsp;&nbsp;Accounts payable | $1516362 | $825027 |
| &nbsp;&nbsp;Operating lease liabilities - current | 116627 | 119876 |
| &nbsp;&nbsp;Other current liabilities | 2153304 | 2306624 |
| &nbsp;&nbsp;Loans - current | 100281 | 100869 |
| Total current liabilities | 3886574 | 3352396 |
| Noncurrent liabilities: |  |  |
| &nbsp;&nbsp;Defined benefit pension plan | 389519 | 390509 |
| &nbsp;&nbsp;Operating lease liabilities - noncurrent | 182129 | 211238 |
| &nbsp;&nbsp;Loans - noncurrent | 273265 | 300084 |
| Total noncurrent liabilities | 844913 | 901831 |
| Total liabilities | $4731487 | $4254227 |
| Stockholders' equity |  |  |
| &nbsp;&nbsp;Preferred stock, $0.0001 par value; 10,000,000 shares authorized; nil shares issued and outstanding as of March 31, 2026 and December 31, 2025 | $— |  |
| &nbsp;&nbsp;Common stock, $0.0001 par value: 100,000,000 shares authorized; 42,488,578 and 42,073,807 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively | 4250 | 4209 |
| &nbsp;&nbsp;Additional paid-in capital | 119970514 | 119139677 |
| &nbsp;&nbsp;Accumulated other comprehensive income | 996952 | 776869 |
| &nbsp;&nbsp;Accumulated deficit | (101356007) | (81194908) |
| &nbsp;&nbsp;Loss of the period | (5608732) | (20161099) |
| &nbsp;&nbsp;Total stockholders' equity | 14006977 | 18564748 |
| Total liabilities and stockholders' equity | $18738464 | $22818975 |

---

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

[**Table of Contents**](#TOC)

#### GAIN THERAPEUTICS, INC.

#### CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
**(UNAUDITED)**

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Operating expenses: |  |  |
| &nbsp;&nbsp;Research and development | $(2763340) | $(2257010) |
| &nbsp;&nbsp;General and administrative | (2590205) | (2112366) |
| Total operating expenses | (5353545) | (4369376) |
| Loss from operations | (5353545) | (4369376) |
| Other income (expense): |  |  |
| &nbsp;&nbsp;Interest income, net | 93052 | 40413 |
| &nbsp;&nbsp;Foreign exchange loss, net | (165173) | (100586) |
| Loss before income tax | (5425666) | (4429549) |
| &nbsp;&nbsp;Income tax | (183066) | (100509) |
| Net loss | $(5608732) | $(4530058) |
| Net loss per share: |  |  |
| Net loss per share attributable to common stockholders - basic and diluted | $(0.13) | $(0.16) |
| Weighted average common stock - basic and diluted | 42230248 | 28685417 |

---

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

[**Table of Contents**](#TOC)

#### GAIN THERAPEUTICS, INC.

#### CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
**(UNAUDITED)**

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Net loss | $(5608732) | $(4530058) |
| Components of other comprehensive income (loss): |  |  |
| &nbsp;&nbsp;Changes in defined benefit pension plan obligation, net of tax | (767) | 4826 |
| &nbsp;&nbsp;Foreign currency translation | 220850 | 122858 |
| Other comprehensive income, net of tax | 220083 | 127684 |
| Comprehensive loss | $(5388649) | $(4402374) |

---

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

[**Table of Contents**](#TOC)

#### GAIN THERAPEUTICS, INC.

#### CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
**(UNAUDITED)**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Common Stock** | **Common Stock** | | | | |
| <br>**Three Months Ended March 31, 2026** | **Shares** | **Amounts** | **AdditionalPaid-in**<br>**Capital** | **AccumulatedOtherComprehensive**<br>**Income (Loss)** | **Accumulated**<br>**Deficit** | <br>**Total** |
| **Balance as of December 31, 2025** | **42073807** | $**4209** | $**119139677** | $**776869** | $**(101356007)** | $**18564748** |
| Issuance of shares in ATM offering (Note 13) | 184662 | 18 | 427765 |  |  | 427783 |
| Stock-based compensation (Note 14) |  |  | 401032 |  |  | 401032 |
| Exercise of warrants (Note 13) | 229710 | 23 | 2040 |  |  | 2063 |
| RSU vesting (Note 14) | 399 |  |  |  |  |  |
| Changes in defined benefit pension plan obligation (Note 10) |  |  |  | (767) |  | (767) |
| Foreign currency translation |  |  |  | 220850 |  | 220850 |
| Net loss |  |  |  |  | (5608732) | (5608732) |
| **Balance as of March 31, 2026** | **42488578** | $**4250** | $**119970514** | $**996952** | $**(106964739)** | $**14006977** |

---

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

[**Table of Contents**](#TOC)

#### GAIN THERAPEUTICS, INC.

#### CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
**(UNAUDITED)**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Common Stock** | **Common Stock** | | | | |
| <br>**Three Months Ended March 31, 2025** | **Shares** | **Amounts** | **AdditionalPaid-in**<br>**Capital** | **Accumulated Other Comprehensive** <br>**Income (Loss)** | **Accumulated**<br>**Deficit** | <br>**Total** |
| **Balance as of December 31, 2024** | **27132588** | $**2713** | $**88779318** | $**(247549)** | $**(81194908)** | $**7339574** |
| Issuance of shares in at-the-market ("ATM") offering (Note 13) | 1094701 | 109 | 2419210 |  |  | 2419319 |
| Stock-based compensation (Note 14) | 63859 | 6 | 423139 |  |  | 423145 |
| Exercise of warrants (Note 13) | 454893 | 47 |  |  |  | 47 |
| Changes in defined benefit pension plan obligation (Note 10) |  |  |  | 4826 |  | 4826 |
| Foreign currency translation |  |  |  | 122858 |  | 122858 |
| Net loss |  |  |  |  | (4530058) | (4530058) |
| **Balance as of March 31, 2025** | **28746041** | $**2875** | $**91621667** | $**(119865)** | $**(85724966)** | $**5779711** |

---

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

[**Table of Contents**](#TOC)

#### GAIN THERAPEUTICS, INC.

#### CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
**(UNAUDITED)**

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31,**  | **Three Months Ended March 31,**  |
|  | **2026** | **2025** |
| **Operating activities:** |  |  |
| Net loss | $(5608732) | $(4530058) |
| Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
| &nbsp;&nbsp;Depreciation and amortization | 21303 | 20660 |
| &nbsp;&nbsp;Stock-based compensation expense | 403509 | 419504 |
| &nbsp;&nbsp;Other non-cash items | 230462 | 109591 |
| Changes in operating assets and liabilities: |  |  |
| &nbsp;&nbsp;Prepaid expenses and other current assets | (278213) | (844484) |
| &nbsp;&nbsp;Long term deposit and other noncurrent assets | (913) | 927 |
| &nbsp;&nbsp;Accounts payable and other current liabilities | 531767 | 1114140 |
| &nbsp;&nbsp;Defined benefit pension plan | (26710) | (23176) |
| &nbsp;&nbsp;Deferred grant income |  | (88631) |
| Total changes in operating assets and liabilities | 225931 | 158776 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash used in operating activities | (4727527) | (3821527) |
| **Cash flow from financing activities:** |  |  |
| Net proceeds from issuance of shares in ATM offering (Note 13) | 427783 | 2419320 |
| Net proceeds from the exercise of warrants (Note 13) | 2063 |  |
| Payments of current portion of long-term debt (Note 11) | (25525) | (22242) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash provided by financing activities | 404321 | 2397078 |
| Effect of exchange rate changes | 24589 | 109535 |
| Net decrease in cash, cash equivalents and restricted cash | (4298617) | (1314914) |
| Cash, cash equivalents and restricted cash at beginning of period | 20873924 | 10417558 |
| Cash, cash equivalents and restricted cash at end of period | $16575307 | $9102644 |

---

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

[**Table of Contents**](#TOC)

#### GAIN THERAPEUTICS, INC.

#### NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
&nbsp;&nbsp;&nbsp;&nbsp;**1.** **Nature of the Business and Basis of Presentation** 

#### Operations and Business
Gain Therapeutics, Inc. (and together with its subsidiaries, the "Company" or "Gain Therapeutics"), was incorporated under the laws of the state of Delaware (U.S.) on June 26, 2020. Gain Therapeutics has been a publicly traded company since the Initial Public Offering ("IPO") completed in March of 2021. The shares trade on the Nasdaq Global Market under the ticker symbol "GANX".

The Company is a biotechnology company developing novel small molecule therapeutics to treat diseases across several therapeutic areas, including, central nervous system (CNS) disorders, lysosomal storage disorders (LSDs), metabolic disorders, and other diseases that can be targeted through protein degradation, such as oncology.

The Company's clinical stage product candidate, GT-02287, is being developed for the treatment of Parkinson's disease with and without GBA1 mutations. The Company generated an extensive preclinical data package providing evidence of the mechanism of action, in vivo pharmacology, and safety of GT-02287. In preclinical models of GBA1 Parkinson's disease, GT-02287 has been shown to restore glucocerebrosidase, or GCase, function in the lysosome, reduce toxic lipid substrates and toxic forms of alpha-synuclein, reduce endoplasmic reticulum stress, improve mitochondrial health and overall survival of dopaminergic neurons, increasing dopamine levels, restoring locomotor and cognitive function, and reducing plasma-based neurodegeneration marker, neurofilament light chain (NfL), back to the level of control animals.

As of March 31, 2026, two clinical studies of GT-02287 have been completed, and one is ongoing. GT-02287 was initially characterized in a first-in-human Phase 1a clinical study to assess the safety, tolerability, pharmacokinetics, and food effect of GT-02287 in healthy participants. The study design included a single ascending dose part during which the study participants received one dose of GT-02287 at different dose levels, and a multiple ascending dose part during which the study participants received one daily dose of GT-02287 for 14 days at different dose levels. The Phase 1a study started in September 2023 and was completed in July 2024 and the quality assurance audited interim report was finalized in the third quarter of 2024. In the second quarter of 2025, a Phase 1 relative bioavailability study in healthy volunteers was initiated. The purpose of this study was to compare two oral formulations of GT-02287. This study was completed in the third quarter of 2025.

In March 2025, the Company enrolled the first participant with Parkinson's disease in its two-part Phase 1b safety and tolerability study to further evaluate the safety, tolerability and biomarker evidence of activity for GT-02287. In Part 1 of this study, participants dose daily with GT-02287 for 90 days. In August 2025, the Company amended the Phase 1b clinical study to include an additional nine (9) months of daily oral administration of GT-02287 in the optional Part 2 of the Phase 1b. Participants enrolled in the Phase 1b are also followed for clinical signs of worsening or improvement. The Company will be presenting the full analysis of Part 1 throughout 2026 and expects to complete Part 2 of the Phase 1b study in September 2026.

#### Segment Information
Operating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by the Chief Operating Decision Maker ("CODM") in deciding how to allocate resources and in assessing performance. The Company's Chief Executive Officer is the Company's CODM. The CODM reviews financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. As such, the Company has determined that it operates as one operating segment, which is research and development in the pharmaceutical sector with a focus on developing novel therapeutics to treat diseases caused by protein misfolding. The Company has concluded that consolidated net income (loss) is the measure of segment profitability. The CODM assesses performance for the Company, monitors budget versus actual results, and

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determines how to allocate resources based on consolidated net income (loss) as reported in the Condensed Consolidated Statements of Operations. There are no other expense categories regularly provided to the CODM that are not already included in the primary financial statements herein.

#### Risks and Uncertainties
The Company is subject to risks and uncertainties common to early-stage companies in the biotechnology industry, including, but not limited to, risks associated with completion and success of preclinical studies and clinical testing, dependence on key personnel, protection of proprietary technology, compliance with applicable governmental regulations, development by competitors of new technological innovations, and the ability to secure additional capital to fund operations. Drug candidates currently under development will require significant additional research and development efforts, including preclinical and clinical testing, prior to regulatory approval and commercialization. These efforts require significant amounts of additional capital, adequate personnel, infrastructure and extensive compliance-reporting capabilities. Even if the Company's drug development efforts are successful, it is uncertain when, if ever, the Company will realize revenue from product sales.

#### Basis of Presentation
The accompanying unaudited interim condensed consolidated financial statements reflect the accounts of Gain Therapeutics, Inc., Gain Therapeutics Australia PTY LTD, GT Gain Therapeutics SA and its wholly owned branch, Gain Therapeutics Sucursal en España. All intercompany transactions and balances have been eliminated in the preparation of the interim condensed consolidated financial statements. The interim condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Any reference in these notes to applicable guidance is meant to refer to the authoritative United States generally accepted accounting principles as found in the Accounting Standards Codification ("ASC") and Accounting Standards Update ("ASU") of the Financial Accounting Standards Board ("FASB").

The interim condensed consolidated financial statements have been prepared on the same basis as applied for the audited annual consolidated financial statements as of and for the year ended December 31, 2025, and, in the opinion of management, reflect all adjustments, consisting of normal recurring adjustments, necessary for the fair presentation of the Company's financial position as of March 31, 2026, the results of its operations and its statements of stockholders' equity and its statements of cash flows for the periods ended March 31, 2026 and 2025.

The results for the periods ended March 31, 2026 and 2025 are not necessarily indicative of the results to be expected for the year ending December 31, 2026, any other interim periods, or any future year or period. These interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements as of and for the year ended December 31, 2025, and the notes thereto, which are included in the Annual Report.

The accompanying interim condensed consolidated financial statements reflect the application of significant accounting policies as described below and elsewhere in these notes to the unaudited interim condensed consolidated financial statements. As of March 31, 2026, the Company's significant accounting policies and estimates, which are detailed in the Annual Report, have not changed.

#### Going Concern
At each reporting period, the Company evaluates whether there are relevant conditions or events, considered in the aggregate, that raise substantial doubt about the Company's ability to continue as a going concern within one year after the date that the financial statements are issued.

The Company has incurred recurring losses and negative cash flows from operations since its inception and has primarily funded these losses through the completion of its IPO in March 2021, other equity financings, and research grants. The Company anticipates incurring additional losses until such time, if ever, that it can generate significant sales of its product candidates currently in development. Substantial additional capital will be needed by the Company to fund its operations and to develop its product candidates.

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The Company's activities have consisted primarily of performing research and conducting preclinical and clinical studies, organizing and staffing the Company, expanding its operations, securing financing, developing and securing its in-licensed technology. The Company faces risks associated with early-stage biotechnology companies whose product candidates are in development. Product candidates currently under development will require significant additional research and development efforts, including extensive preclinical and clinical testing, establishing manufacturing capacity and obtaining regulatory approval prior to commercialization. These efforts require significant amounts of additional capital for the Company to complete its research and development activities, achieve its research and development objectives, defend its intellectual property rights, and recruit and retain skilled personnel and key members of management. Even if the Company's product development efforts are successful, it is uncertain when, if ever, the Company will realize revenue from product sales.

In accordance with ASC 205-40, "Presentation of Financial Statements – Going Concern", the Company has evaluated whether there are certain conditions and events, considered in the aggregate, that raise substantial doubt about the Company's ability to continue as a going concern within one year after the date that the financial statements are issued. The Company assessed that its existing cash and cash equivalents of $16.5 million as of March 31, 2026 will not be sufficient to fund its estimated operating and capital expenditures for a period of at least 12 months from the date these financial statements are issued. Because of the current liquidity situation and lack of expected revenues in the foreseeable future, substantial doubt exists about its ability to continue as a going concern. The Company will need to obtain additional capital and/or other funding in order to continue operations beyond the first quarter of 2027.

Management plans to raise additional capital primarily through private and/or public equity financings and/or convertible debt financings. As an additional action, management is currently reviewing the cost structure throughout the organization, looking for opportunities to optimize expenditures and create efficiencies with the objective of improving the Company's overall cash burn rate, optimizing the research and development expenses and reducing general and administrative expenses. Furthermore, management is actively seeking opportunities for strategic collaborations, licensing agreements and grant fundings, among other strategic opportunities.

The Company may not be successful in its efforts to raise additional funds or achieve profitable operations. The Company continues to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support its ongoing operations beyond the first quarter of 2027, including raising additional capital through either private or public equity, debt financing, or additional program collaborations.

If the Company is unable to obtain additional funding to support its current or proposed activities and operations, it may not be able to continue its operations as currently anticipated, which may require it to suspend or terminate any ongoing development activities, modify its business plan, curtail various aspects of its operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, the Company's stockholders may lose a substantial portion or even all of their investment.

Because of the actions that management is taking to secure future financial resources, the accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of business. The financial statements do not include any adjustments that might be necessary if the Company is unable to continue as a going concern.

2. Summary of Significant Accounting Policies

#### Foreign Currency Transactions
The Company is incorporated in the United States of America and has operations in Switzerland, Spain and Australia. The functional currencies of the Company's operations are the local currencies (USD in the United States, Swiss franc in Switzerland, euro in Spain and Australian dollar in Australia). Assets and liabilities reported in the Condensed Consolidated Balance Sheets are translated into USD (the currency in which these financial statements are presented) at the exchange rates applicable at the balance sheet dates and for the Condensed Consolidated Statements of Operations at the average exchange rates for the periods presented. Items representing the share capital and additional paid-in capital are presented at historical exchange rates. Adjustments resulting from the translation of the financial statements of the

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Company's foreign operations into USD are excluded from the determination of net income and are recorded in accumulated other comprehensive income/(loss), a separate component of shareholders' equity. The Company has not utilized any foreign currency hedging strategies to mitigate the effect of its foreign currency exposure. As of March 31, 2026 and December 31, 2025, accumulated currency translation adjustments recorded in accumulated other comprehensive income amounted to $1,109,301 and $888,451, respectively. For the three months ended March 31, 2026 and 2025, unrealized foreign exchange loss was $188,164 and $66,898, respectively.

#### Use of Estimates
The preparation of the Company's condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of expenses during the reporting periods. On an ongoing basis, the Company evaluates its estimates, judgments and assumptions including those related to going concern assessment, recognition of accrued expenses, defined benefit pension liability, stock-based compensation, and recognition of research grants. These estimates and assumptions are based on current facts, historical experience and various other factors believed to be reasonable by management under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ materially and adversely from these estimates. Changes in estimates are recorded in the period in which they become known. To the extent that material differences arise between the estimates and actual results, the Company's future results of operations will be affected.

#### Cash and Cash Equivalents
The Company classifies cash on hand and held at banks, and all highly liquid investments in money market, certificates of deposit, time deposit, and other short-term liquid securities with original maturities of less than 90 days, as cash and cash equivalents.

#### Concentrations of Credit Risk
The Company has no significant off-balance sheet risk such as foreign exchange contracts, option contracts, or other foreign hedging arrangements. Financial instruments that may expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents which are deposited in accredited financial institutions in excess of federally insured limits. The Company deposits its cash and cash equivalents in financial institutions that it believes have high credit quality and has not experienced any losses on such accounts and does not believe it is exposed to any unusual credit risk beyond the normal credit risk associated with commercial banking relationships.

#### Issuance Costs
The Company capitalizes certain legal, professional accounting and other third-party fees that are directly associated with equity financings as issuance costs. These costs are recorded as a reduction of the proceeds generated as a result of the offering. Should the planned equity financing be abandoned, the issuance costs will be expensed immediately as a charge to operating expenses in the Condensed Consolidated Statements of Operations.

#### Property and Equipment
Property and equipment are stated at cost, including any accessory and direct costs that are necessary to make the assets fit for use, and adjusted by the corresponding accumulated depreciation. The depreciation expenses are recorded using the straight-line method in the Condensed Consolidated Statements of Operations and have been calculated by taking into consideration the use, purpose and financial-technical duration of the assets, on the basis of their estimated useful economic lives. The Company believes the above criteria to be represented by the following depreciation rates:

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| | |
|:---|:---|
| - Equipment & furniture | 12.5% |
| - Electronic office equipment | 20% |
| - Leasehold improvements | based on the terms of the lease |
| - Laboratory equipment | 15% |

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Ordinary maintenance costs are entirely attributed to the Condensed Consolidated Statements of Operations in the year in which they are incurred. Extraordinary maintenance costs, the purpose of which is to extend the useful economic life of the asset, to technologically upgrade it and/or to increase its productivity or safety for the purposes of the economic productivity of the Company, are attributed to the asset to which they are related and are depreciated on the basis of its estimated useful economic lives. Amortization of leasehold improvements is computed using the straight-line method based upon the terms of the applicable lease or estimated useful life of the improvements, whichever is lower.

#### Capitalized Software Development Costs
The Company capitalizes the costs of software obtained for internal use in accordance with ASC 350-40, "Internal-Use Software". Capitalized software development costs consist of costs incurred during the development stage and include purchased software licenses, implementation costs, consulting costs, and payroll-related costs for projects that qualify for capitalization. All other costs, primarily related to maintenance and minor software fixes, are expensed as incurred.

Internal-use software, net consisted of the following:

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| | | |
|:---|:---|:---|
|  | **March 31,** <br>**2026** | **December 31,** <br>**2025** |
| Internal-use software | $300295 | $302119 |
| Less: accumulated amortization | (210250) | (199282) |
| Internal-use software, net | $90045 | $102837 |

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The Company amortizes the capitalized software development costs on a straight-line basis over the estimated useful life of the software, which is generally six years, beginning when the asset is substantially ready for use. The amortization of capitalized software development costs is reflected in general and administrative expenses. Amortization expense for the three months ended March 31, 2026 and 2025 was $12 thousand and $11 thousand, respectively.

#### Impairment of Long-lived Assets
In accordance with ASC 360, "Property, Plant and Equipment," the Company performs an impairment test whenever events or circumstances indicate that the carrying value of long-lived assets with finite lives may be impaired. Impairment is measured by comparing the carrying value of the long-lived assets to the estimated undiscounted pre-tax cash flows expected to result from the use of such assets and their ultimate disposition. In circumstances where impairment is determined to exist, the Company will write down the asset to its fair value based on the present value of estimated cash flows. No impairments have been identified by management as of and for any periods presented.

#### Patents
Patent-related costs refer to legal fees incurred in connection with filing and prosecuting patent applications and are expensed as incurred due to uncertainty about the recovery of the expenditure. Amounts incurred are classified as general and administrative expenses.

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#### Leases
The Company determines if an arrangement contains a lease at inception based on whether or not the Company has the right to control the asset during the contract period and other facts and circumstances, as per ASC 842, "Leases". Operating lease right-of-use ("ROU") assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease, both of which are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date using the Company's incremental borrowing rate applicable to the lease. The collateralized incremental borrowing rate is based on the information available at the lease commencement date. The Company is typically required to make fixed minimum rent payments and is often required, by the lease, to pay for certain other costs including real estate taxes, insurance, common area maintenance and/or certain other costs, which may be fixed or variable, depending upon the terms of the respective lease agreement. To the extent these payments are fixed, the Company has included them in calculating the lease ROU assets and lease liabilities. Variable lease payments primarily include payments for non-lease components, such as maintenance or utilities. Leases with a term of 12 months or less at inception are expensed on a straight-line basis over the lease term in the Condensed Consolidated Statements of Operations. The Company determines the lease term by assuming the exercise of renewal options that are reasonably certain.

***Accounts Payable***

Accounts payable are reported at their nominal amounts due to their short-term maturities. Trade accounts payable are recorded net of trade discounts; cash discounts are recorded at the time of payment.

***Payables for Social Security Charges***

Social security charges are reported in compliance with rules and laws applicable in the countries where the Company's employees work. Charges are accrued in accordance with the policies stipulated and in connection with salaries due for the period.

#### Accrued Expenses
As part of the process of preparing the Company's condensed consolidated financial statements, the Company is required to estimate its accrued expenses as of each balance sheet date. This process involves reviewing open contracts and purchase orders, communicating with Company personnel to identify services that have been performed on its behalf and estimating the level of service performed and the associated cost incurred for the service when the Company has not yet been invoiced or otherwise notified of the actual cost. The Company makes estimates of its accrued expenses as of each balance sheet date based on facts and circumstances known at the time of the preparation of its condensed consolidated financial statements. There may be instances in which payments made to the Company's vendors exceed the level of services provided, and result in a prepayment reported under Other Current Assets, which is subsequently expensed in the Condensed Consolidated Statements of Operations when the related activity has been performed. To date, there have been no material differences between the Company's estimates of accrued expenses reported at each balance sheet date and the amounts actually incurred.

#### Pension Obligations
The Company operates defined benefit pension plan and defined contribution pension plans in accordance with local regulations and practices in the countries in which the Company operates. These plans are funded by regular contributions made by the Company and its employees. For the defined benefit pension plan, the liability recognized in the Condensed Consolidated Balance Sheets is the present value of the defined benefit obligation at the balance sheet date less the fair value of plan assets. The overfunded or underfunded status of the defined benefit plan is calculated as the difference between plan assets and the projected benefit obligations. Estimates are used in determining the assumptions incorporated in the calculation of the pension obligations, which is supported by input from independent actuaries. Actuarial gains and losses arising from experience adjustments and changes in actuarial assumptions are recognized in the Condensed Consolidated Statements of Changes in Stockholders' Equity under accumulated other comprehensive income (loss) and are charged or credited to income over the employees' expected average remaining service period using the

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corridor amortization method. The measurement date used for the Company's employees defined benefit plan is December 31.

For defined contribution pension plans, the Company pays contributions to publicly or privately administered pension insurance plans on a mandatory, contractual or voluntary basis. The Company has no further payment obligations once the contributions have been paid. The contributions are recognized as employee benefit expense when they are due.

#### Stock-based Compensation
The Company issues stock-based compensation awards with service-based vesting conditions. The Company applies the fair value method of measuring equity-based compensation, which requires an entity to measure the cost of services received in exchange for an award of equity instruments based on the grant-date fair value of the award. The Company recognizes the corresponding expense in the statement of operations over the period the participants are required to render service. Forfeitures are recognized as they occur.

The fair value of each stock option award is estimated as of the grant date using the Black-Scholes option pricing model. The Company determines the volatility and the expected term of exercise for awards granted based on the actual volatility of its share price traded on the Nasdaq and the best estimate of the timing of the exercise by the beneficiaries as of the grant date. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. The Company has not paid, and does not anticipate paying, cash dividends on its common stock; therefore, the expected dividend yield is assumed to be nil. The assumptions used in calculating the fair value of stock-based awards represent management's best estimates and involve inherent uncertainties and the application of management's judgment.

The Company recognizes expenses related to restricted stock units (RSUs) based on their fair market value, determined as the closing price on the Nasdaq of the Company's common stock as of the grant date, on a straight-line basis over the requisite service period.

#### Warrants
The Company accounts for warrants to purchase shares of its common stock as equity instruments. The Company evaluates each warrant at issuance to determine the appropriate classification. Warrants that are indexed to its common stock and meet the criteria for equity classification are recorded at fair value as of the issuance date within stockholders' equity and are not subsequently remeasured. The fair value of warrants issued is determined using the Black-Scholes option pricing model, applying valuation assumptions consistent with those used for stock-based compensation, as described above. The assumptions used in calculating the fair value of warrants represent management's best estimates and involve inherent uncertainties and the application of management's judgment.

#### Research Grants
Under the terms of the research and development grants awarded, the Company receives upfront payments or is entitled to receive reimbursement of its allowable direct expenses and payroll costs. Contributions from research and development activities under the grants are recorded when there is reasonable assurance of collection and based on management's best estimate of the periods in which the related expenditures are incurred, and activities performed, and are classified in the Condensed Consolidated Statements of Operations as a reduction to research and development expenses. Grants received in advance of the specific research and development costs to which they relate are deferred and recognized in the Condensed Consolidated Balance Sheets as deferred grant income.

Under the Australian government's Research and Development Tax Incentive ("R&DTI") program, the Company is eligible to obtain certain research and development tax credits for eligible research and development expenditures incurred by its wholly owned subsidiary, Gain Therapeutics Australia. The tax credits are available on the basis of specific criteria with which the Company must comply, including conducting qualifying research and development activities in Australia. The tax credits are administered through the local tax authority and can be realized regardless of whether the Company has generated taxable income in the respective jurisdictions. The tax credits are based on a percentage of eligible

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research and development activities under the program and are recorded based on management's best estimate of the periods in which the related expenditures are incurred and activities performed and are classified in the Condensed Consolidated Statements of Operations as a reduction to research and development expenses when collectability is reasonably assured. The Company records the research and development tax credit as an offset to income tax payable with any remainder recorded in other receivables.

#### Research and Development Expenses
The Company expenses all costs incurred in performing research and development activities. Research and development expenses include salaries and other related costs, materials and supplies, preclinical expenses, manufacturing expenses, contract services, other third-party expenses, and overhead allocations consisting of various support and facilities-related expenses, which include rent, utilities and maintenance of our facilities, depreciation, travel and conference expenses.

#### General and Administrative Expenses
General and administrative expenses consist primarily of salaries, benefits and other related costs for personnel and consultants in the Company's executive, administrative and finance functions. General and administrative expenses also include professional fees for legal, finance, accounting, intellectual property, auditing, tax and consulting services, travel expenses and facility-related expenses, which include allocated expenses for rent and maintenance of facilities and other operating costs not otherwise included in research and development expenses.

#### Income Taxes
The Company accounts for income taxes under the liability method. Under this method deferred income tax liabilities and assets are determined based on the difference between the financial statements carrying amounts of assets and liabilities and the related tax basis using enacted tax rates in effect in the years in which the associated deferred taxes are expected to reverse. A valuation allowance is recorded if it is "more likely than not" that a portion or all of a deferred tax asset will not be realized. The Company accounts for any taxes associated with Global Intangible Low-Taxed Income ("GILTI") as a period cost.

As of each reporting date, the Company considers existing evidence, both positive and negative, that could impact its view with regard to future realization of deferred tax assets. In consideration of the start-up status of the Company, a full valuation allowance has been established to offset the deferred tax assets, as the related realization is currently uncertain. In the future, should management conclude that it is more likely than not that the deferred tax assets are partially or fully realizable, the valuation allowance will be reduced to the extent of such expected realization, and the corresponding amount will be recognized as income tax benefit in the Company's Condensed Consolidated Statements of Operations.

Income taxes were $183 thousand and $101 thousand for the three months ended March 31, 2026 and 2025, respectively. The increase was mainly attributable to higher corporate taxes in Australia.

#### Fair Value Measurement
The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company applies the following fair value hierarchy, which prioritizes the inputs used to measure fair value into three levels based on their observability in the market and degree of judgment involved:

● Level 1 – Quoted prices in active markets for identical assets or liabilities.

● Level 2 – Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

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● Level 3 – Inputs that are generally unobservable and typically reflect management's estimates of assumptions that market participants would use in pricing the asset or liability.

In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible and consider counterparty credit risk in their assessment of fair value.

#### Comprehensive Income / (Loss)
Comprehensive income / (loss) is composed of net income / (loss) and certain changes in stockholder's equity that are excluded from the net income / (loss), primarily foreign currency translation adjustments and changes in defined benefit obligation.

The tables below provide the accumulated balances for each classification of accumulated other comprehensive loss, as reflected in the Condensed Consolidated Balance Sheets.

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| | | | |
|:---|:---|:---|:---|
|  | **Defined Benefit Pension Obligation** | **Foreign Currency Translation** | **Total** |
| **Balance as of December 31, 2024** | $(288796) | $41247 | $(247549) |
| &nbsp;&nbsp;Other comprehensive income (loss) before reclassifications | 156631 | 847204 | 1003835 |
| &nbsp;&nbsp;Amounts reclassified from accumulated other comprehensive loss | 20583 |  | 20583 |
| Net period other comprehensive income (loss), net of tax | 177214 | 847204 | 1024418 |
| **Balance as of December 31, 2025** | (111582) | 888451 | 776869 |
| &nbsp;&nbsp;Other comprehensive income (loss) before reclassifications | 14 | 220850 | 220864 |
| &nbsp;&nbsp;Amounts reclassified from accumulated other comprehensive loss | (781) |  | (781) |
| Net period other comprehensive income (loss), net of tax | (767) | 220850 | 220083 |
| **Balance as of March 31, 2026** | $(112349) | $1109301 | $996952 |

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#### Net Loss per Share
Basic net loss per share is computed by dividing the reported net loss by the weighted average number of shares of common stock outstanding during the period and shares issuable for little or no cash consideration upon resolution of any applicable contingency. The Company gives consideration to all potentially dilutive impacts, except where the effect of including such securities would be antidilutive. As of March 31, 2026 and December 31, 2025, common stock equivalents consisted of stock options, RSUs, and warrants. Because the Company has reported net losses since inception, these potential impacts would be antidilutive, and therefore common stock equivalents have been excluded from the computation, resulting in basic and diluted net loss per share being the same for all periods presented.

#### Recently Issued Accounting Pronouncements
From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Except as noted below, the Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on the Company's condensed consolidated financial statements and disclosures.

*Recently issued accounting pronouncements not yet adopted*

In November 2024, the FASB issued ASU No. 2024-03, *Disaggregation of Income Statement Expenses (Subtopic 220-40)*. The ASU requires new disclosures providing further detail of a company's income statement expense line items. The ASU is effective for annual periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Adoption of this ASU can either be applied prospectively to consolidated financial statements issued for reporting periods after the effective date of this ASU or retrospectively to any or all prior periods presented in the consolidated financial statements. This ASU will likely result in the required additional disclosures being

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included in the Company's consolidated financial statements, once adopted. As this ASU relates to disclosures only, there will be no impact to the Company's consolidated results of operations and financial condition.

In September 2025, the FASB issued ASU No. 2025-06, *Intangibles–Goodwill and Other– Internal-Use Software (Subtopic 350-40)*. The ASU modernizes the accounting for software development by removing all references to prescriptive and sequential software development stages in favor of a probable-to-completion recognition threshold. The probable-to-completion recognition threshold requires two criteria be met for entities to begin capitalizing software costs: (i) management, with the relevant authority, implicitly or explicitly authorizes and commits to funding a computer software project and (ii) it is probable that the project will be completed and the software will be used to perform the function intended. The ASU is effective for annual periods beginning after December 15, 2027, and interim periods within fiscal years beginning after December 15, 2027. Adoption of this ASU can either be applied prospectively, retrospectively, or via a modified prospective transition method. The modified prospective transition approach would allow entities to account for an in-process project that, before the transition date, met the capitalization requirements but would no longer meet the requirements for capitalization under the ASU by derecognizing the capitalized costs for that in-process project through a cumulative-effect adjustment to the opening balance of retained earnings. The Company is evaluating this new standard, but does not expect it to have material impact on its consolidated results of operations and financial condition.

In December 2025, the FASB issued ASU No. 2025-10, Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities, which establishes authoritative guidance on the recognition, measurement, presentation, and disclosure of government grants. Under ASU No. 2025-10, government grants are recognized when it is probable that the entity will both comply with the conditions of the grant and the grant will be received. ASU No. 2025-10 provides specific accounting models for grants related to assets and grants related to income, including options to recognize government grants as deferred income or as a reduction of the asset's cost basis. ASU No. 2025-10 also requires enhanced disclosures regarding the nature of government grants, significant terms and conditions, accounting policies applied, and amounts recognized in the financial statements. ASU No. 2025-10 is effective for fiscal years beginning after December 15, 2028, including interim periods within those fiscal years, with early adoption permitted. ASU No. 2025-10 can be applied prospectively, modified prospectively, or retrospectively. The Company is currently evaluating the impact of adopting ASU No. 2025-10 on its operating results, financial position, and cash flows.

**3.** **Research Grants** 

During the course of its business, the Company applies for research grants with public or private organizations to fund its research projects. Under the terms of these grants, the Company receives an upfront payment or is entitled to receive reimbursement of its allowable direct research expenses.

In March 2023, the Company's wholly owned subsidiary, GT Gain Therapeutics SA, announced that Eurostars and Innosuisse awarded a grant in the aggregated amount of $1.3 million to a consortium led by Gain Therapeutics that also includes the Institute for Research in Biomedicine, Newcells Biotech and the University of Helsinki. The grant was intended to support the development of the Company's alpha-1 antitrypsin deficiency program. The portion of the grant that was allocated to the Company was $0.45 million. In June 2025, the grant was terminated due to the dissolution of the consortium. The remaining unused portion of the grant awarded of $0.21 million was repaid as of September 30, 2025.

In May 2023, the Company's wholly owned subsidiary, GT Gain Therapeutics SA, announced that Innosuisse awarded the Company a grant under the Swiss Accelerator program in the amount of $2.8 million to support further development activities of Gain Therapeutics' lead program GBA1 Parkinson's disease. In December 2024, the parties to the grant entered into an amendment to the funding agreement whereby the grant amount was amended to approximately $2.0 million due to changes in project scope. There is no impact to the Condensed Consolidated Statements of Operations or Condensed Consolidated Balance Sheets due to this amendment.

In connection with the grant announced in May 2023 the Company recorded a reduction to research and development expenses of $15 thousand and $194 thousand during the three months ended March 31, 2026 and 2025, respectively. The Company recorded grant-related receivables of $0.5 million and $0.4 million as of March 31, 2026 and December 31, 2025, respectively.

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In the second quarter of fiscal year 2023, the Company's wholly owned subsidiary, Gain Therapeutics Australia started the Phase 1 Clinical Trial for its lead program in Parkinson's disease in Australia. The Australian government sponsors the Research and Development Tax Incentive ("R&DTI") program which offers a tax credit for companies conducting eligible research and development activities. The R&DTI program provides for a cash refund based on a percentage of eligible research and development activities undertaken in Australia by Gain Therapeutics Australia. The Company recorded a reduction to research and development expenses of $0.3 million and $0.2 million during the three months ended March 31, 2026 and 2025, respectively, related to the R&DTI program. The corresponding receivable was recorded within Other Current Assets (see Note 6).

4. Cash, Cash Equivalents and Restricted Cash

The Company considers all short-term and highly liquid investments, with an original maturity of three months or less, to be cash equivalents. The Company's cash and cash equivalents include short-term highly liquid investments which are readily convertible into cash and relate to money market securities which are reported at fair value. The Company's institutional money market accounts permit daily redemption, and the fair values of these investments are based upon the quoted prices in active markets provided by the holding financial institutions, which are considered Level 1 inputs in the fair value hierarchy. Given their short-term maturities and the underlying value being mainly represented by cash equivalents, their face value amount approximates the related fair market value.

The Company has not experienced any losses in these accounts and does not believe it is exposed to any significant credit risk on cash and cash equivalents.

Cash, cash equivalents and restricted cash are broken down as follows:

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|:---|:---|:---|
|  | **March 31,** <br>**2026** | **December 31,** <br>**2025** |
| Cash | $9957112 | $9777237 |
| Money market | 6582110 | 11060391 |
| Total cash and cash equivalents | $16539222 | $20837628 |
| Restricted cash | $36085 | $36296 |

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Restricted cash refers to an amount required under the Company's office lease agreement in Lugano, Switzerland and is deposited into a restricted bank account as a guarantee.

5. Tax Credits, Prepaid Expenses and Other Current Assets

Tax credits, prepaid expenses and other current assets consisted of the following:

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|:---|:---|:---|
|  | **March 31,** <br>**2026** | **December 31,** <br>**2025** |
| Tax credits | $231003 | $179701 |
| Prepaid and deferred expenses | $317456 | $275428 |
| Prepaid research and development service agreements | 12423 | 243796 |
| Prepaid directors and officers (D&O) insurance costs | 358059 | 77593 |
| Research and development grant receivable, net | 763606 | 622992 |
| Total prepaid expenses and other current assets | $1451543 | $1219809 |

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Tax credits consist of a value-added tax credit, which is an indirect tax receivable from Swiss and Spanish tax authorities on purchases of goods and services executed in those countries.

Prepaid and deferred expenses refer to pre-payments made to the Company's vendors for future services.

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Prepaid research and development service agreements mainly refer to research agreements entered into with third parties for research projects that will be recognized as expenses throughout the research period.

Prepaid D&O insurance costs relate to an annual insurance premium which will be recognized in the statement of operations on a monthly basis throughout the one year insurance period.

The research and development grant receivable, net of income tax payable, relates to a tax credit for eligible research and development costs incurred under the R&DTI program and a receivable related to the research grant awarded by Innosuisse under the Swiss Accelerator program. Refer to Note 3 for further discussion.

6. Property and Equipment, Net

Property and equipment, net consisted of the following:

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| | | |
|:---|:---|:---|
|  | **March 31,** <br>**2026** | **December 31,** <br>**2025** |
| Computer | $106342 | $110949 |
| Furniture and fixtures | 65625 | 66429 |
| Leasehold improvements | 35815 | 36098 |
| Laboratory instruments |  | 45205 |
| Total property and equipment | 207782 | 258681 |
| Less: accumulated depreciation | (153347) | (183765) |
| Property and equipment, net | $54435 | $74916 |

---

During the three months ended March 31, 2026, the Company disposed of laboratory equipment with a remaining net book value of $12 thousand. No disposals or impairments occurred during the three months ended March 31, 2025. Depreciation has been calculated based on the assets' estimated economic lives by taking into consideration the use, purpose and financial-technical duration of the assets. Depreciation expense for the three months ended March 31, 2026 and 2025 was $9 thousand.

7. Operating Leases

The Company leases offices in Bethesda (United States), Lugano (Switzerland), and Barcelona (Spain). Certain of the Company's leases include options to extend or terminate the lease. Renewal options are included in the calculation of ROU assets and lease liabilities when the Company is reasonably certain that renewal options will be exercised. Periods subject to termination options are included in the lease term only when the Company is reasonably certain not to exercise the termination option. The Company's lease agreements do not contain residual value guarantees or material restrictive covenants.

The operating lease expenses are reported as follows:

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Research and development | $21867 | $33911 |
| General and administrative | 10200 | 8888 |
| Total operating lease costs | $32067 | $42799 |

---

In the three months ended March 31, 2026 and 2025, the Company incurred short-term lease expense of $41 thousand and $18 thousand respectively. This expense was recognized on a straight-line basis and reported within general and administrative costs.

[**Table of Contents**](#TOC)

The future minimum lease payments for the Company's operating leases as of March 31, 2026, are as follows:

---

| | |
|:---|:---|
| **Fiscal Year** | **Operating Leases** |
| 2026 | $94730 |
| 2027 | 80754 |
| 2028 | 48590 |
| 2029 | 49852 |
| 2030 | 51150 |
| Total future minimum lease payments | 325077 |
| Less amount representing interest or imputed interest | 26321 |
| Present value of lease liabilities | $298756 |

---

8. Accounts Payable

Accounts payable refer to amounts due to third parties on outstanding invoices received for services already provided. As of March 31, 2026 and December 31, 2025, accounts payable amounted to $1.5 million and $0.8 million, respectively. All accounts payable are due in less than 12 months.

9. Other Current Liabilities

Other current liabilities consisted of the following:

---

| | | |
|:---|:---|:---|
|  | **March 31,** <br>**2026** | **December 31,** <br>**2025** |
| Payable for social security and withholding taxes | $287469 | $167893 |
| Accrued payroll | 523403 | 1192479 |
| Accrued research and development | 574244 | 518856 |
| Accrued professional fees | 660335 | 370662 |
| Accrued other | 41178 | 13645 |
| Tax provision | 66674 | 43089 |
| Total other current liabilities | $2153304 | $2306624 |

---

Accrued payroll refers to accruals for year-end bonuses, accrued vacation, overtime and other payroll-related accruals.

Tax provision refers to a tax payable due to the Spanish tax authorities related to taxable income generated in Spain.

10. Pension and Other Benefit Programs

Net periodic pension costs related to the Company's defined benefit pension plan refers only to Swiss employees and, as of March 31, 2026 and 2025, can be summarized as follows:

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Component of net periodic pension costs: |  |  |
| &nbsp;&nbsp;Service cost | $27441 | $37994 |
| &nbsp;&nbsp;Interest cost | 4943 | 2999 |
| &nbsp;&nbsp;Expected return on plan assets | (3879) | (3090) |
| &nbsp;&nbsp;Amortization of losses | 8 | 5431 |
| &nbsp;&nbsp;Amortization of prior service credit | (789) | (687) |
| Total | $27724 | $42647 |

---

[**Table of Contents**](#TOC)

Employer contributions for the three months ended March 31, 2026 was $27 thousand. The Company's expected contributions for fiscal year 2026 are $115 thousand. Service cost is reported in general and administrative expenses. Certain other components of net periodic pension costs are reported in interest income, net in the Condensed Consolidated Statements of Operations.

11. Loans

In August 2020, the Company obtained a CHF 638,000 ($700,221 at the historical foreign exchange rate), nine-year loan, due in quarterly installments with payments commencing on December 31, 2021, and ending on September 30, 2029. The loan was part of the infrastructure put in place by the Federal Council and Swiss Parliament in view of the economic consequences of the COVID-19 pandemic, bears no interest and there were no issuance costs. The Company accounts for this loan at face value, which is deemed to approximate the related fair value.

Total future payments for the Company's loan as of March 31, 2026 are as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Total** | **2026** | **2027** | **2028** | **2029** |
| Loan | $373546 | $75211 | $100281 | $100281 | $97773 |

---

12. Fair Value Measurement

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company's assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability.

The carrying amounts of the Company's cash and cash equivalents, including money market funds, restricted cash and financial liabilities are considered to be representative of their respective fair values because of the short-term nature and the contractual terms of those instruments. The fair values of money market funds are based upon the quoted prices in active markets provided by the holding financial institution, which are considered Level 1 inputs in the fair value hierarchy according to ASC 820, "Fair Value Measurement". There have been no changes to the valuation methods utilized by the Company, nor were there transfers between levels of the fair value hierarchy.

[**Table of Contents**](#TOC)

---

| | | | |
|:---|:---|:---|:---|
|  | **Fair value measurement at reporting date using** | **Fair value measurement at reporting date using** | **Fair value measurement at reporting date using** |
|  | **Quoted prices inactive market foridentical assets**<br>**(Level 1)** | **Significant otherobservable inputs**<br>**(Level 2)** | **Significantunobservable inputs**<br>**(Level 3)** |
| March 31, 2026: |  |  |  |
| &nbsp;&nbsp;Assets |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash equivalents: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Money market funds | $6582110 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Total cash equivalents | 6582110 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total financial assets | $6582110 | $— | $— |
| December 31, 2025: |  |  |  |
| &nbsp;&nbsp;Assets |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash equivalents: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Money market funds | $11060391 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Total cash equivalents | 11060391 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total financial assets | $11060391 | $— | $— |

---

The carrying amounts of prepaid expenses and other current assets, accounts payable, and accrued expenses approximate their fair value due to their short-term maturities.

**13. Common, Preferred Stock and Warrants**

At the Company's annual meeting held on June 24, 2025, the stockholders approved an amendment to the Company's Amended and Restated Certificate of Incorporation to increase its authorized shares of common stock from 50,000,000 to 100,000,000. The amendment did not change any of the current rights and privileges of the Company's common stock or its par value, and did not affect the number of shares of the Company's common stock outstanding.

As of March 31, 2026 and December 31, 2025, the authorized capital stock of the Company included 100,000,000 shares of common stock, $0.0001 par value and 10,000,000 shares of preferred stock, $0.0001 par value. As of March 31, 2026 and December 31, 2025, there were 42,488,578 and 42,073,807 shares of common stock, respectively, $0.0001 par value, issued and outstanding.

*Public offering July 2025*

In July 2025, the Company completed the public offering of 4,501,640 shares of its common stock and warrants to purchase 2,250,820 shares of its common stock. The warrants were offered and sold at a rate of one warrant for every two shares of common stock purchased. The public offering price for each set of two shares of common stock and accompanying warrant to purchase one share of common stock was $3.11, yielding an effective price of $1.55 per share and $0.01 per warrant. Each warrant has an exercise price of $1.65 per share of common stock and was immediately exercisable on the date of issuance. The public offering resulted in gross proceeds to the Company of $7.0 million, which included $1.0 million in offering expenses, such as underwriter fees and legal, audit, and advisory costs, for net proceeds to the Company of $6.0 million. As of December 31, 2025, 1,146,821 public warrants were exercised resulting in the issuance of 1,146,821 shares of common stock and net proceeds of $1.9 million. In the first quarter ended March 31, 2026, 1,250 public warrants were exercised resulting in the issuance of 1,250 shares of common stock and additional net proceeds of $2 thousand.

Following completion of the public offering, the underwriter exercised the over-allotment option that was granted in connection with the public offering to purchase an additional 675,246 shares of common stock, and warrants to purchase 337,623 shares of common stock, which resulted in additional gross proceeds of $1.1 million, which included $0.1 million in offering expenses, such as underwriter fees, for net proceeds of $1.0 million.

[**Table of Contents**](#TOC)

The fair value of the shares of common stock and investor warrants issued in the offering has been recorded in additional paid-in capital and the totality of the gross proceeds has been allocated to the shares of common stock and investor warrants issued.

In connection with the public offering, the Company issued the underwriter warrants to purchase 362,382 shares of common stock at an exercise price of $1.94 per share as consideration for the services provided (the "2025 Underwriter Warrants"). The 2025 Underwriter Warrants will be exercisable for four and a half years commencing six months after the date of the underwriting agreement. The 2025 Underwriter Warrants provide for cashless exercise. The 2025 Underwriter Warrants were recorded within additional paid-in capital, as they represent compensation associated with the financing round, for $0.3 million.

The fair market value of the investor warrants and the 2025 Underwriter Warrants issued in connection with the public offering have been calculated using the Black-Scholes option pricing model. Below is a table that summarizes the assumptions that have been used in the calculation:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **2025 Investor Warrants** | **2025 Investor Warrants** | **2025 Underwriter Warrants** | **2025 Underwriter Warrants** |
|  | **July 17, 2025** | **July 23, 2025** | **July 17, 2025** | **July 23, 2025** |
| Market price at grant date | $1.61 | $1.68 | $1.61 | $1.68 |
| Volatility | 87.50% | 87.50% | 85.00% | 85.00% |
| Expected term (years) | 2.50 | 2.50 | 2.75 | 2.74 |
| Risk-free interest rate | 3.83% | 3.79% | 3.82% | 3.78% |
| Expected dividend yield  |  |  |  |  |
| Grant date fair value per share | $0.85 | $0.90 | $0.80 | $0.85 |

---

*At the market offering*

In September 2024, the Company entered into an Equity Distribution Agreement (the "Distribution Agreement") with Oppenheimer & Co. Inc., serving as agent ("Oppenheimer") with respect to an at-the-market ("ATM") offering program (the "2024 ATM Program"). Under the 2024 ATM Program, the Company may offer and sell, from time to time at its sole discretion, shares of common stock having an aggregate offering price of up to $50.0 million. The Company will pay Oppenheimer a commission equal to 3.0% of the gross sales proceeds of any shares sold through Oppenheimer under the Distribution Agreement. For the three months ended March 31, 2026, the Company sold an aggregate of 184,662 shares of common stock at an average selling price of $2.39 per share under the 2024 ATM Program, raising gross proceeds of $0.4 million, which included $13 thousand of sales commissions for net proceeds of $0.4 million. Since the inception of the 2024 ATM Program and as of March 31, 2026, the Company has sold an aggregate of 8,632,469 shares of common stock at an average selling price of $2.59 per share under the 2024 ATM Program, raising gross proceeds of $22.4 million, which included $0.7 million of sales and commissions and $0.3 million in other offering expenses for net proceeds of $21.4 million.

*Warrants*

Below is a summary of the Company's issued and outstanding warrants as of March 31 2026:

---

| | | | |
|:---|:---|:---|:---|
| <br>**Expiration Date** | **Warrants**<br>**Outstanding** | **Warrants**<br>**Exercisable** | **Weighted Average**<br>**Exercise Price** |
| November 24, 2028 | 3361484 | 3361484 | $2.75 |
| June 17, 2029 | 106914 | 106914 | 1.69 |
| July 17, 2030 | 1799254 | 1799254 | 1.71 |
| Outstanding as of March 31, 2026 | 5267652 | 5267652 | $2.37 |

---

[**Table of Contents**](#TOC)

The following table summarizes the Company's warrants activity for the three months ended March 31, 2026:

---

| | | |
|:---|:---|:---|
|  | <br>**Warrants** | **Weighted Average**<br>**Exercise Price** |
| Outstanding as of December 31, 2025 | 5759453 | $2.31 |
| &nbsp;&nbsp;Exercised: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Investor Warrants (a) | (1250) | 1.65 |
| &nbsp;&nbsp;&nbsp;&nbsp;Agent Warrants (a) | (490551) | 1.69 |
| Outstanding as of March 31, 2026 | 5267652 | $2.37 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) In the three months ended March 31, 2026, 1,250 investor warrants and 490,551 placement agent warrants were exercised and resulted in net proceeds of $2 thousand. In connection with the cashless exercise of the placement agent warrants, 228,460 shares were issued and 262,091 shares were withheld to cover the warrants' exercise price.

14. Equity Incentive Plan

On September 24, 2020, the Company's Board of Directors (the "Board") adopted the 2020 Omnibus Incentive Plan (the "2020 Omnibus Plan"). The 2020 Omnibus Plan provided for the granting of equity-based awards to the Company's named executive officers, other employees, consultants and non-employee directors at a price to be determined by the Board. On May 12, 2022, the Board approved the Company's 2022 Equity Incentive Plan (the "2022 Plan"), which was approved at the Company's annual meeting of stockholders on June 16, 2022. The 2022 Plan is the successor to and continuation of the 2020 Omnibus Plan. The total number of shares reserved for issuance under the 2022 Plan (including shares remaining available under the 2020 Omnibus Plan) is 1,800,000, which increases automatically by 6% every year on January 1, based on the number of shares of common stock issued and outstanding as of the previous year-end. No incentive stock options may be granted under the 2022 Plan after May 12, 2032 and the Board may suspend or terminate the 2022 Plan at any time. The Board is responsible for administering the 2022 Plan.

In addition to the above, on December 23, 2021, the Board adopted the Inducement Equity Incentive Plan (the "2021 Inducement Equity Incentive Plan"), intended to induce new employees to join the Company for the benefit of individuals who satisfy the standards for inducement grants under Rule 5635(c)(4) of the Nasdaq Listing Rules. The maximum number of shares reserved for issuance pursuant to awards granted under the 2021 Inducement Equity Incentive Plan is 1,000,000.

Stock options are generally granted with a 10 year term at exercise prices equal to the market price at the date of grant. After one year of service from the date of grant, 25% of the options become exercisable, with the remainder becoming exercisable monthly over the following three-year period. RSUs generally vest 25% after one year of service from the date of grant and the remainder vesting quarterly over the following three-year period.

***Stock Option Grants***

The following table summarizes the Company's stock option activity for the three months ended March 31, 2026:

---

| | | | |
|:---|:---|:---|:---|
|  | <br>**Shares** | **Weighted Average**<br>**Grant Date**<br>**Fair Value** | <br>**Weighted Average**<br>**Exercise Price** |
| Options outstanding as of December 31, 2025 | 3531980 | $2.35 | $3.64 |
| &nbsp;&nbsp;Options granted | 798500 | 1.38 | 1.86 |
| &nbsp;&nbsp;Options canceled/forfeited | (325324) | 1.97 | 3.53 |
| Options outstanding as of March 31, 2026 | 4005156 | $2.18 | $3.29 |

---

As of March 31, 2026, unrecognized compensation costs associated with the stock options grants was $3.7 million and will be recognized over a period of 4.0 years.

[**Table of Contents**](#TOC)

The assumptions that the Company used to determine the grant-date fair value of stock options granted during the three months ended March 31, 2026 and 2025 were as follows, presented on a weighted-average basis:

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Grant date fair value | $1.38 | $1.67 |
| Volatility | 85% | 80% |
| Expected term (years) | 6.08 | 6.08 |
| Risk-free interest rate | 4.04% | 4.09% |
| Expected dividend yield  |  |  |

---

The assumptions that cause the greatest variation in fair value in the Black-Scholes model are the volatility and expected term of exercise. Increases or decreases in either the volatility or expected term of exercise will cause the Black-Scholes option value to increase or decrease, respectively. Each of these inputs is subjective and generally requires significant judgment to determine.

***Restricted Stock Units***

The following table summarizes the Company's RSUs activity for the three months ended March 31, 2026:

---

| | | |
|:---|:---|:---|
|  | <br>**Numbers of Shares** | **Weighted Average**<br>**Grant Date Fair**<br>**Value per Share** |
| Outstanding as of December 31, 2025 | 20303 | $4.19 |
| &nbsp;&nbsp;Vested | (399) | 3.58 |
| &nbsp;&nbsp;Canceled/forfeited | (116) | 3.58 |
| Outstanding as of March 31, 2026 | 19788 | $4.20 |
| Total unrecognized expense remaining | $63970 |  |
| Years unrecognized expense expected to be recognized over | 1.0 |  |

---

Options and RSUs do not have voting rights and the underlying shares are not considered issued and outstanding.

The total stock-based compensation expense for stock options and RSUs, granted to employees and non-employees, has been reported in the Company's Condensed Consolidated Statements of Operations as follows:

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Research and development | $258533 | $267968 |
| General and administrative | 144976 | 151536 |
| Total stock-based compensation | $403509 | $419504 |

---

\

15. Net Loss per Common Share

Basic net loss per common share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per common share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock and potentially dilutive securities outstanding during the period. For purposes of the diluted net loss per share calculation, preferred stock, warrants, stock options, RSUs, and PRSUs are considered to be potentially dilutive securities, but are excluded from the calculation of diluted net loss per share because their effect would be antidilutive and, therefore, basic and diluted net loss per share are the same for all periods presented.

[**Table of Contents**](#TOC)

The following table sets forth the outstanding weighted-average potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to do so would have resulted in antidilutive impacts:

---

| | | |
|:---|:---|:---|
|  | **Three Months Ended March 31** | **Three Months Ended March 31** |
|  | **2026** | **2025** |
| Options to purchase common stock | 3381977 | 3508863 |
| RSUs | 19822 | 105505 |
| Warrants to purchase common stock | 5576721 | 5103778 |

---

16. Related Parties

Dr. Khalid Islam, the Executive Chairman of the Company's Board, shareholder and founder of the Company, is currently the Chairman of the Board of Directors of Minoryx Therapeutics SL ("Minoryx"), and therefore, Minoryx is considered a related party of the Company. In December 2017, the Company entered into an exclusive worldwide, royalty-bearing, assignable, transferable license agreement with Minoryx to use and exploit Minoryx's intellectual property and into an exclusive worldwide, royalty-bearing, assignable, transferable sublicense agreement with Universitat de Barcelona and Institucio Catalana Recerca Estudis Avancats in order to be able to develop its business, directly or indirectly, through sub-licensing to third parties or any other way of operation. According to the terms and conditions of the Minoryx License Agreement, the Company shall pay to Minoryx as royalties:

● an amount equal to 8% of (i) net revenues with regard to products that would infringe (a) at least one composition of matter claim or (b) Minoryx molecules and (ii) sublicensing revenues; and

● an amount equal to 3% of net revenues with regard to products that would infringe at least (a) one method of claim; or (b) Minoryx know-how (as such term is defined in the agreement).

There were no receivables and payables as of March 31, 2026 and December 31, 2025 with Minoryx. There were no revenues or expenses for the three months ended March 31, 2026 and 2025 with Minoryx.

17. Commitments and Contingencies

*Commitments:*

As of March 31, 2026, the Company had research commitments for $3.0 million for activities that will be performed within one year.

*Contingencies:*

The Company records a liability when it is probable a loss has been incurred and the amount is reasonably estimable, the determination of which requires significant judgment. When a loss is reasonably possible but not probable, or when the amount of a probable loss cannot be reasonably estimated, the Company discloses the nature of the contingency and, where estimable, the range of possible loss. The Company does not anticipate, at the present time, that the ultimate aggregate liability, if any, arising out of such other legal proceedings will have a material adverse effect on the Company's financial position, result of operations or liquidity. Resolution of legal matters in a manner inconsistent with management's expectations could have a material impact on the Company's financial condition and operating results.

On September 18, 2024, Matthias Alder, the Company's former Chief Executive Officer, filed litigation against the Company in the Circuit Court of Maryland for Montgomery County. Mr. Alder's employment was terminated on June 25, 2024. In connection with the litigation the Company recorded an accrual of $0.53 million, reported within payroll related accruals as of December 31, 2024. Following mediation, the lawsuit was dismissed with prejudice on July 2, 2025. The amounts accrued by the Company were materially in line with the disbursements required to settle this litigation.

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**18. Subsequent Events**

From April 1, 2026 through May 8, 2026, the Company has sold an aggregate of 296,697 shares of common stock through the 2024 ATM Program at an average selling price of $2.04 for total gross proceeds of $0.60 million, which included $18 thousand in sales commissions and other offering expenses for net proceeds of $0.59 million.

#### Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.
***You should read the following discussion of our financial condition and results of operations in conjunction with our unaudited interim condensed consolidated financial statements and the related notes and other financial information included elsewhere in this Quarterly Report and the audited financial statements and related notes and management's discussion and analysis of financial condition and results of operations for the year ended December 31, 2025 included in our Annual Report. In addition to historical financial information, this discussion contains forward-looking statements based upon current expectations that involve risks and uncertainties, such as statements of our plans, objectives, expectations, intentions and belief. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth in the section titled "Risk Factors" under Part II, Item 1A of this Quarterly Report and Part I, Item 1A of our Annual Report.***

#### Overview
We are a biotechnology company developing novel small molecule therapeutics to treat diseases across several therapeutic areas, including, central nervous system ("CNS") disorders, lysosomal storage disorders ("LSDs") and metabolic disorders through molecular chaperoning to stabilize misfolded proteins and increase their activity, as well as other diseases that can be targeted through protein inactivation or modulation, such as oncology. We use our computational target and drug discovery platform, Magellan™, to discover novel allosteric binding sites on proteins implicated in a disease and to identify proprietary small molecules that bind these sites to modulate protein function and treat the underlying cause of the disease. We believe that Magellan™ is uniquely suited to identify allosteric binding sites on the protein surface, which are different from the active (or orthosteric) binding site where the natural ligand of the protein binds. Targeting an allosteric binding site instead of the active binding site of a protein provides numerous advantages, including: the ability to regulate proteins implicated in disease through several different mechanisms of action covering both functional and conformational effects, including stabilization, destabilization, targeted degradation, allosteric inhibition, and allosteric activation of the targeted protein; improved specificity of small molecules because binding to an allosteric binding site is non-competitive with the natural substrate that binds to the active binding site; and the ability to identify small molecules with more favorable drug-like properties. We have used our drug discovery platform to identify novel allosteric sites and small molecules for all of our pipeline programs. We plan to continue to advance our existing research programs and initiate additional programs targeting allosteric binding sites identified with the Magellan™ platform in various therapeutic areas through academic partnerships, co-development and licensing arrangements.

Our clinical stage product candidate, GT-02287, is being developed for the treatment of Parkinson's disease with and without GBA1 mutations. We have generated an extensive preclinical data package providing evidence of the mechanism of action, in vivo pharmacology, and safety of GT-02287. In preclinical models of GBA1 Parkinson's disease, GT-02287 has been shown to restore glucocerebrosidase, or GCase, function in the lysosome, reduce toxic lipid substrates and toxic forms of alpha-synuclein, reduce endoplasmic reticulum stress, improve mitochondrial health and overall survival of dopaminergic neurons, increasing dopamine levels, restoring locomotor and cognitive function, and reducing plasma-based neurodegeneration marker, neurofilament light chain (NfL), back to the level of control animals.

As of March 31, 2026, two clinical studies of GT-02287 have been completed, and one is ongoing. GT-02287 was initially characterized in a first-in-human Phase 1a clinical study to assess the safety, tolerability, pharmacokinetics, and food effect of GT-02287 in healthy participants. The study design included a single ascending dose part during which the study participants received one dose of GT-02287 at different dose levels, and a multiple ascending dose part during which the study participants received one daily dose of GT-02287 for 14 days at different dose levels. The Phase 1a study started in September 2023 and was completed in July 2024 and the quality assurance audited interim report was finalized in the third quarter of 2024. In the second quarter of 2025, a Phase 1 relative bioavailability study in healthy volunteers

[**Table of Contents**](#TOC)

was initiated. The purpose of this study was to compare two oral formulations of GT-02287. This study was completed in the third quarter of 2025.

In March 2025, we enrolled the first participant with Parkinson's disease in our two-part Phase 1b safety and tolerability study to further evaluate the safety, tolerability and biomarker evidence of activity for GT-02287. In Part 1 of this study, participants dose daily with GT-02287 for 90 days. In August 2025, we amended the Phase 1b clinical study to include an additional nine (9) months of daily oral administration of GT-02287 in the optional Part 2 of the Phase 1b. Participants enrolled in the Phase 1b are also followed for clinical signs of worsening or improvement. Through September 2025 a total of 21 patients were enrolled in the Phase 1b. Samples of cerebrospinal fluid were taken at the initiation of dosing and at day 90 following completion of Part 1, and blood samples were taken at multiple timepoints. In November 2025 a total of 19 patients had completed Part 1 of the Phase 1b and we will be presenting the full analysis of Part 1 throughout 2026. Of the 19 patients who completed Part 1 of the Phase 1b, a total of 16 patients elected to continue on daily oral administration of GT-02287. We expect to complete Part 2 of the Phase 1b study in September 2026.

We continue to monitor the impacts on our operations and access to financing from; global and worsening macroeconomic conditions, such as the war in Ukraine, the recent conflict in Iran and the Middle East, global geopolitical tension, exchange rate fluctuations, supply chain disruptions, liquidity concerns and increases in commodity, energy and fuel prices.

#### Recent Developments
In January 2026, we released additional biomarker and clinical data from the Phase 1b study of GT-02287 in Parkinson's disease. Participants with elevated baseline cerebrospinal fluid glucosylsphingosine demonstrated a reduction in levels following three months of treatment, and in the efficacy analysis they showed an improvement in combined MDS-UPDRS Part II and Part III scores compared to the rest of the participants. We hosted a virtual KOL event the same day featuring key opinion leaders to contextualise the results.

In March 2026, we presented new data on our lead candidate GT-02287 at the AD/PD 2026 Conference in Copenhagen. In addition to the the elevated baseline cerebrospinal fluid glucosylsphingosine that was associated with an improvement in combined MDS-UPDRS Part II and Part III scores following administration of GT-02287 reported earlier, the new data showed those same participants also had a decrease in cerebrospinal fluid levels of DOPA decarboxylase (DDC), an enzyme responsible for synthesizing dopamine from its precusor L-DOPA, following GT-02287 treatment. DDC is elevated in people with Parkinson's disease, so a reduction could suggest a slowing of neurodegeneration. In the ongoing Phase 1b Parkinson's disease study, 16 of 19 participants elected to enter the nine-month extension, and an independent Data Monitoring Committee endorsed continuation without modification. We also unveiled preclinical data on a structurally distinct series of allosteric GCase modulators, led by GT-04686, now ready to advance into IND-enabling studies.

**Financial Condition**

Since our inception in 2017, we have devoted substantially all of our resources to identify and develop next-generation brain-penetrant allosteric small molecules for the treatment of devastating diseases with high-unmet medical needs using our Magellan™ platform. Our operations have consisted primarily of expanding our operations, securing financing, performing research, conducting preclinical and clinical studies and developing and securing our in-licensed technology. To date, we do not have any product candidates approved for sale and have not generated any revenue from product sales, and as a result, we face risks associated with early-stage biotechnology companies whose product candidates are in development. We will not generate revenue from product sales unless and until we successfully complete clinical development and obtain regulatory approval for our product candidates. We expect our research and development expenses to remain significant and to increase to support progress in our research and development activities. In addition, if we obtain regulatory approval for our product candidates and do not enter into a third-party commercialization partnership, we expect to incur significant expenses related to developing our commercialization capability to support product sales, marketing, manufacturing and distribution activities. These efforts require significant amounts of additional capital for us to complete our research and development programs, achieve our research and development objectives, defend our

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intellectual property rights, and recruit and retain skilled personnel, and key members of management. Even if our product development efforts are successful, it is uncertain when, if ever, we will realize significant revenue from product sales.

At our annual meeting held on June 24, 2025, our stockholders approved an amendment to our Amended and Restated Certificate of Incorporation to increase our authorized shares of common stock from 50,000,000 to 100,000,000. The amendment did not change any of the current rights and privileges of our common stock or its par value, and did not affect the number of shares of our common stock outstanding.

In July 2025, we completed the public offering of 4,501,640 shares of our common stock and warrants to purchase 2,250,820 shares of our common stock. The warrants were offered and sold at a rate of one warrant for every two shares of common stock purchased. The public offering price for each set of two shares of common stock and accompanying warrant to purchase one share of common stock was $3.11, yielding an effective price of $1.55 per share and $0.01 per warrant. Each warrant has an exercise price of $1.65 per share of common stock and was immediately exercisable on the date of issuance. The public offering resulted in gross proceeds of $7.0 million, which included $1.0 million in offering expenses, such as underwriter fees and legal, audit, and advisory costs, for net proceeds of $6.0 million. As of December 31, 2025, 1,146,821 public warrants were exercised resulting in the issuance of 1,146,821 shares of common stock and net proceeds to us of $1.9 million. In the first quarter ended March 31, 2026, 1,250 public warrants were exercised resulting in the issuance of 1,250 shares of common stock and additional net proceeds to us of $2 thousand.

Following completion of the July 2025 public offering, the underwriter exercised the over-allotment option that was granted in connection with the public offering to purchase an additional 675,246 shares of common stock, and warrants to purchase 337,623 shares of common stock, which resulted in additional gross proceeds of $1.1 million, which included $0.1 million in offering expenses, such as underwriter fees, for net proceeds of $1.0 million. In connection with the public offering, we issued the underwriter warrants to purchase 362,382 shares of common stock at an exercise price of $1.94 per share as consideration for the services provided. The underwriter warrants provide for cashless exercise.

On July 20, 2025, 225,387 warrants issued in 2020 in connection with the Series B Preferred Stock to designees of the placement agent were not exercised within their five year exercisable period and were therefore forfeited. On May 6, 2025, 200,000 warrants issued in 2021 to an investment bank for banking services and financial advisory were not exercised within their four year exercisable period and were therefore forfeited.

In September 2024, we entered into an Equity Distribution Agreement (the "Distribution Agreement") with Oppenheimer & Co. Inc., serving as agent ("Oppenheimer") with respect to an at-the-market ("ATM") offering program (the "2024 ATM Program"). Under the 2024 ATM Program we may offer and sell, from time to time at our sole discretion, shares of common stock having an aggregate offering price of up to $50.0 million. We pay Oppenheimer a commission equal to 3.0% of the gross sales proceeds of any shares sold through Oppenheimer under the Distribution Agreement. For the three months ended March 31, 2026, we sold an aggregate of 184,662 shares of common stock at an average selling price of $2.39 per share under the 2024 ATM Program, for total gross proceeds of $0.4 million, which included $13 thousand of sales commissions for net proceeds of $0.4 million. As of March 31, 2026, we sold an aggregate of 8,632,469 shares of common stock at an average selling price of $2.59 per share under the 2024 ATM Program, for total gross proceeds of $22.4 million, which included $0.7 million of sales commissions and $0.3 million in other offering expenses for net proceeds of $21.4 million. From April 1, 2026 through May 8, 2026, we sold an aggregate of 296,697 shares of common stock through the 2024 ATM Program at an average selling price of $2.04 for total gross proceeds of $0.60 million, which included $18 thousand in sales commissions and other offering expenses for net proceeds of $0.59 million.

From inception through March 31, 2026, we have raised an aggregate of $120 million of gross proceeds through equity financing, including the issuance of convertible preferred stock, our initial public offering, secondary offerings and previous sales under our ATM programs. We have outstanding warrants exercisable for an aggregate of 5.3 million shares of our common stock at a weighted-average exercise price per share of $2.37 through March 31, 2026 related to public and private offerings.

As of March 31, 2026, we had cash and cash equivalents of $16.5 million. We have incurred recurring losses and negative cash flows from operations since inception and as of March 31, 2026 and December 31, 2025, had an accumulated deficit of $107.0 million and $101.4 million, respectively. We anticipate incurring additional losses until such time, if ever,

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that we can generate sales of our product candidates currently in development. We have not generated any product revenues and have not achieved profitable operations. There is no assurance that profitable operations will ever be achieved, and, if achieved, could be sustained on a continuing basis. In addition, we will need significant additional financing to fund our operations and to develop our product candidates. Our ability to continue operations after our current cash resources are exhausted depends on our ability to obtain additional financing or to achieve profitable operations, as to which no assurances can be given. Cash requirements may vary materially from those now planned because of changes in direction of our research and development programs, competitive and technical advances, patent developments, regulatory changes or other developments. If adequate additional funds are not available when required, or if we are unsuccessful in entering into partnership agreements for further development of our pipeline, management may need to curtail our development efforts and planned operations to conserve cash.

**Going Concern**

As of March 31, 2026 and December 31, 2025, we had an accumulated deficit of $107.0 million and $101.4 million, respectively, and as of March 31, 2026, we had cash and cash equivalents of $16.5 million. During the three months ended March 31, 2026, we incurred net losses of $5.6 million and negative cash flows from operations of $4.7 million. Our current operating plan indicates that we will continue to incur losses from operations and negative cash flows from operating activities. Our projected cash outflows for the upcoming periods raise substantial doubt about our ability to continue as a going concern for at least 12 months from the issuance of the financial statements included elsewhere in this Quarterly Report. We will need to raise additional capital to fund continued operations beyond the first quarter of 2027. We plan to address our liquidity needs by taking steps to improve our operations and cash position, including identifying access to future capital and potential cost-reduction measures.

**Financing Requirements; Current Financing Environment**

Until such time, if ever, as we can generate substantial product revenues to support our business and corporate strategy, we expect to finance our cash needs through a combination of public and private equity offerings, including at-the-market offerings, debt financings, government or private party grants, collaborations, strategic alliances and licensing arrangements. We may not be able to obtain financing on acceptable terms, or at all, and we may not be able to enter into strategic alliances or other arrangements on favorable terms, or at all. The terms of any financing may adversely affect our holdings or the rights of our stockholders. If we are unable to obtain funding, we could be required to delay, limit, reduce or eliminate research and development programs, product portfolio expansion or future commercialization efforts, or grant rights to develop, sell and market our product candidates even if we would otherwise prefer to develop and market such product candidates ourselves, which could adversely affect our business prospects.

Uncertain macroeconomic conditions, including the risk of inflation, fluctuating interest rates, changing international trade and import policies, potential impact of tariffs, instability in the financial system, global geopolitical tensions, such as the ongoing conflict between Russia and Ukraine and between the United States and Iran and elsewhere in the Middle East continue to have unpredictable impacts on global societies, economies, financial markets, and business practices. Recently worsening global macroeconomic conditions, liquidity concerns at and failures of banks and other financial institutions, volatility in the capital markets, and related market uncertainty, may impact our ability to obtain additional financing when needed on favorable terms or at all.

**Strategic Transactions; Collaboration and Licensing Agreements**

We routinely evaluate business development opportunities for the advancement of our lead program, GT-02287, our earlier stage pipeline, and our Magellan<sup>TM</sup> computational platform technology, including potential licensing, co-development, commercialization, and other strategic alternatives. These discussions may involve pharmaceutical companies, biotechnology companies, or other strategic partners.

While we continue to assess opportunities that could enhance shareholder value and support the advancement of our development programs, there can be no assurance that any such discussions will result in the execution of a definitive agreement. We intend to pursue transactions that we believe align with our strategic objectives, strengthen our financial position, and accelerate the development and potential commercialization of our lead candidate.

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#### Components of Our Consolidated Results of Operations

#### Revenue
We have not generated any revenue from product sales and do not expect to generate any revenue from the sale of products in the foreseeable future, if at all. If we fail to complete the development of our product candidates in a timely manner or fail to obtain their regulatory approval and successfully commercialize them, we will not generate revenues in the future.

#### Operating Expenses
Our operating expenses since inception have consisted solely of research and development and general and administrative costs.

#### Research and Development Expenses
Research and development expenses consist primarily of costs incurred for our research activities, including our discovery efforts, and the development of our product candidates, which include:

● expenses incurred under collaborations with third parties, including contract research organizations ("CROs") and universities, that conduct research, preclinical and clinical studies, such as in-vitro and in-vivo absorption, distribution, metabolism and excretion ("ADME"), cell model studies, in-vivo pharmacology and pharmacokinetic studies, toxicology studies and chemical synthesis, stability studies, manufacturing and control materials, process characterization, scale-up and transfer, clinical trial expenses, on our behalf;

● employee salaries, benefits and other related costs, including stock-based compensation expenses, for employees engaged in research and development functions and overhead allocations consisting of various support and facilities-related expenses, which include rent, utilities and maintenance of our facilities, depreciation, travel and conference expenses;

● fees paid to consultants who assist with research and development activities and related travel expenses; and

● the cost of sponsored research, which includes laboratory materials and supplies, manufacturing scale-up expenses and the cost of acquiring and manufacturing preclinical studies.

The following table provides a breakdown of our research and development expenses by major category:

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| | | | |
|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  |  |
|  | **March 31,**  | **March 31,**  |  |
|  | **2026** | **2025** | **Change** |
| Preclinical activities, clinical activities and outside services | $1747259 | $1456041 | $291218 |
| Personnel expenses | 1116386 | 1100761 | 15625 |
| Other | 202304 | 69966 | 132338 |
| Research grants | (302609) | (369759) | 67150 |
| Total research and development expenses | $2763340 | $2257010 | $506330 |

---

We recognize research and development costs as incurred. We recognize external development costs based on an evaluation of the progress to completion of specific tasks using information provided to us by our vendors. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and are reflected in our financial statements as prepaid or accrued research and development expenses. We anticipate that our research and development expenses will increase substantially in future periods to support progress in our research and development activities, including the progression of the clinical trials for product candidates we are developing. These increases will likely also result from expanded infrastructure and increased insurance costs. Such expenses are offset by

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contributions from research grants, which are recorded as a reduction to research and development expenses when we have reasonable assurance of collection and based on our best estimate of the periods in which the related expenditures are incurred and activities performed.

Our primary research and development focus since inception has been the application of our Magellan™ platform to various indications and targets, and more recently the development of our clinical stage lead product candidate GT-02287 for the treatment of Parkinson's disease and other neurodegenerative diseases. As of December 31, 2025 our efforts have led to the advancement of GT-02287 through Phase 1 testing and preparing to initiate Phase 2 clinical testing during third quarter of 2026.

Research and development activities are central to our business model. Product candidates in later stages of clinical development generally incur higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials. As a result, we expect that our research and development expenses may increase in the foreseeable future as we (i) increase personnel costs, including stock-based compensation, (ii) continue preclinical development of our lead compounds, (iii) progress our clinical trials for certain product candidates, (iv) continue to discover and develop additional product candidates, and (v) pursue later stages of clinical development of product candidates.

#### General and Administrative Expenses
General and administrative expenses consist primarily of salaries, bonuses and other related costs, including stock-based compensation, for personnel in our executive, finance, corporate and business development and administrative functions. General and administrative expenses also include legal fees relating to patent and corporate matters, professional fees for accounting, auditing, tax and consulting services, insurance costs, travel expenses, and facility-related expenses, and other operating costs.

We will continue to focus on preserving our liquidity resources while we seek to maximize shareholders' value.

#### Other Financial Income (Expense)
Other financial income (expense) consists of interest income, interest expense, and foreign exchange gain or loss, net.

#### Consolidated Results of Operations
The following table summarizes our results of operations for the three months ended March 31, 2026 and 2025.

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| | | | |
|:---|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  |  |
|  | **March 31,**  | **March 31,**  |  |
|  | **2026** | **2025** | **Increase**<br>**(Decrease)** |
| Operating expenses: |  |  |  |
| &nbsp;&nbsp;Research and development | $(2763340) | $(2257010) | $506330 |
| &nbsp;&nbsp;General and administrative | (2590205) | (2112366) | 477839 |
| Total operating expenses | (5353545) | (4369376) | 984169 |
| Loss from operations | (5353545) | (4369376) | 984169 |
| Other income (expense): |  |  |  |
| &nbsp;&nbsp;Interest income, net | 93052 | 40413 | 52639 |
| &nbsp;&nbsp;Foreign exchange loss, net | (165173) | (100586) | (64587) |
| Loss before income tax | (5425666) | (4429549) | 996117 |
| &nbsp;&nbsp;Income tax | (183066) | (100509) | 82557 |
| Net loss | $(5608732) | $(4530058) | $1078674 |
| Net loss per share: |  |  |  |
| Net loss per share attributable to common stockholders - basic and diluted | $(0.13) | $(0.16) | $(0.03) |
| Weighted average common stock - basic and diluted | 42230248 | 28685417 |  |

---

***Comparison of the Three Months Ended March 31, 2026 and 2025***

*Research and development expenses*

Research and development expenses increased by $0.5 million to $2.8 million for the three months ended March 31, 2026, as compared to $2.3 million for the three months ended March 31, 2025. The increases in research and development expenses were primarily related to costs associated with our lead program compound GT-02287 for the treatment of Parkinson's Disease, unfavorable foreign exchange currency translation as the Swiss franc and Australian dollar strengthened against the U.S. dollar and higher research and development personnel costs.

*General and administrative expenses*

General and administrative expenses increased by $0.5 million to $2.6 million for the three months ended March 31, 2026, as compared to $2.1 million for the three months ended March 31, 2025. The increases in general and administrative expenses for the period were primarily attributable to higher professional fees, higher personnel costs, and unfavorable foreign exchange currency translation as the Swiss franc and Australian dollar strengthened against the U.S. dollar.

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*Interest income, net*

Interest income, net increased by $53 thousand to $93 thousand for the three months ended March 31, 2026, as compared to $40 thousand for the three months ended March 31, 2025. The increase was mainly attributable to higher interest income from a higher balance in our money market fund over the comparative periods.

*Foreign exchange (loss) gain, net*

Foreign exchange loss, net increased by $65 thousand to $165 thousand for the three months ended March 31, 2026, as compared to $101 thousand for the three months ended March 31, 2025. The increase was due to the unfavorable foreign currency exchange as the Swiss franc and Australian dollar strengthened against the U.S. dollar.

*Income taxes*

Income taxes were $183 thousand and $101 thousand for the three months ended March 31, 2026 and 2025, respectively. The increase was mainly attributable to higher corporate taxes in Australia.

#### Liquidity and Capital Resources
Since our inception, we have not generated any revenue from product sales and have incurred significant operating losses and negative cash flows from our operations. We have not yet received approval for or commercialized any products or technologies, and we do not expect to generate revenue from sales of any products in the near term, if at all. As described in additional detail under "Financial Condition" above, we have funded our operations to date primarily through a combination of sales of our securities and research grants.

As of March 31, 2026 and December 31, 2025, we had $16.5 million and $20.8 million in cash and cash equivalents, respectively, and an accumulated deficit of $107.0 million and $101.4 million, respectively. We had indebtedness of $0.37 million and $0.40 million as of March 31, 2026 and December 31, 2025, respectively. Our cash and cash equivalents available as of March 31, 2026 are expected to be sufficient to fund our anticipated operating and capital requirements into the first quarter of 2027 but will not be sufficient to finance our operations for one year from the issuance of the financial statements included in this Quarterly Report. Therefore, we have reported that there is substantial doubt about our ability to continue as a going concern. Please refer to the discussion above titled "Going Concern".

Our ability to continue operations after our current cash resources are exhausted depends on our ability to obtain additional financing or to achieve profitable operations, as to which no assurances can be given. Cash requirements may vary materially from those now planned because of changes in the direction of our research and development programs, competitive and technical advances, patent developments, regulatory changes, or other developments. If adequate additional funds are not available when required, or if we are unsuccessful in entering into partnership agreements for further development of our pipeline, management may need to curtail our development efforts and planned operations to conserve cash.

Until such time, if ever, as we can generate substantial product revenues to support our business and corporate strategy, we expect to finance our cash needs through a combination of public and private equity offerings, debt financings, government or private party grants, collaborations, strategic alliances, and licensing arrangements. As of March 31, 2026, we did not maintain any lines of credit or equity capital committed for funding with the exception of the 2024 ATM Program.

To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our stockholders will be or could be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our stockholders. Debt financing and equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures, or declaring dividends. If we raise funds through collaborations, or other similar arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us and/or may

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reduce the value of our common stock. We may not be able to obtain additional funds through equity or debt financings when needed on favorable terms or at all, including as a result of interest rate uncertainty, liquidity concerns at, and failures of, banks and other financial institutions, volatility in the capital markets and related market uncertainty. Further, if we are unable to obtain additional funding to support our current or proposed activities and operations, we may not be able to continue our operations as currently anticipated, which may require us to suspend or terminate any ongoing development activities, modify our business plan, curtail various aspects of our operations, cease operations, or seek relief under applicable bankruptcy laws.

#### Cash Flows
The following table summarizes our cash flows for each of the periods presented:

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| | | |
|:---|:---|:---|
|  | **Three Months Ended**  | **Three Months Ended**  |
|  | **March 31,**  | **March 31,**  |
|  | **2026** | **2025** |
| Cash used in operating activities | $(4727527) | $(3821527) |
| Cash provided by financing activities | 404321 | 2397078 |
| Effect of exchange rate changes | 24589 | 109535 |
| Net decrease in cash, cash equivalents and restricted cash | $(4298617) | $(1314914) |

---

#### Cash Flows from Operating Activities
Operating cash flow used during the three months ended March 31, 2026 increased compared to the prior-year period primarily due to a higher net loss (excluding non-cash items such as stock-based compensation and foreign currency transaction gains or losses) and changes in working capital. During the three months ended March 31, 2026 and 2025, we used $4.7 million and $3.8 million of cash, respectively, in operating activities primarily to fund our operations related to the development of our pipeline and product candidates as well as related general and administrative support activities.

#### Cash Flows from Financing Activities
During the three months ended March 31, 2026 and 2025, cash provided by financing activities was $0.4 million and $2.4 million, respectively, due primarily to net proceeds from the issuance of shares pursuant to the 2024 ATM Program.

#### Funding Requirements
Our primary use of cash is to fund our operating expenses, which consist of research and development and general and administrative expenditures.

Because of the numerous risks and uncertainties associated with research, development and commercialization of pharmaceutical products, we are unable to estimate the exact amount of our operating capital requirements. Our future funding requirements will depend on many factors, including, but not limited to:

● the number and characteristics of the product candidates we pursue;

● the timing of, and the costs involved in, obtaining regulatory approvals for our product candidates;

● costs associated with growing our workforce;

● the scope, timing, progress and results of discovery, preclinical development, laboratory testing and clinical trials for our product candidates;

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● the extent to which we enter into collaborations or other arrangements with additional third parties in order to further develop our product candidates;

● the extent to which we encounter increased costs as a result of global and macroeconomic conditions, including high interest rates, supply chain disruptions, fluctuating exchange rates, and increases in commodity, energy and fuel prices;

● the costs of preparing, filing and prosecuting patent applications, maintaining and enforcing our intellectual property rights, and defending intellectual property-related claims;

● the costs and fees associated with the discovery, acquisition or in-license of additional product candidates or technologies;

● our ability to establish additional collaborations on favorable terms, if at all;

● the costs required to scale up our clinical, regulatory and manufacturing capabilities;

● the costs of manufacturing our product candidates for clinical trials and in preparation for marketing approval and commercialization;

● the costs of future commercialization activities, if any, including establishing sales, marketing, manufacturing and distribution capabilities, for any of our product candidates for which we receive marketing approval;

● revenue, if any, received from commercial sales of our product candidates, should any of our product candidates receive marketing approval; and

● the impact of geopolitical and macroeconomic events, including tariffs, future bank failures, increased geopolitical tensions between the United States and China, the ongoing conflicts between Russia and Ukraine and between the United States and Iran and elsewhere in the Middle East, and global pandemics, on United States and global economic conditions including changes in monetary and fiscal policy, United States political developments and other sources of instability that may impact our ability to access capital on acceptable terms, if at all.

We will need additional funding to meet our operational needs and capital requirements for our preclinical studies and clinical trials, other research and development expenditures, and business development activities. Because of the numerous risks and uncertainties associated with the development of our product candidates, we are unable to estimate the amounts of increased capital outlays and operating expenditures associated with our current and anticipated clinical trials.

Until such time, if ever, we can generate substantial product revenue, we expect to finance our operations through a combination of public and private equity offerings, debt financings, at-the-market offerings, government or private party grants, collaborations, strategic alliances, and licensing arrangements. We may not be able to obtain additional funds through equity or debt financings when needed on favorable terms or at all.

#### Critical Accounting Estimates
Our management's discussion and analysis of our financial condition and results of operations are based on our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these condensed consolidated financial statements and related disclosures requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue, costs and expenses, and the disclosure of contingent assets and liabilities in our financial statements. We base our estimates on historical experience, known trends and events and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities

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that are not readily apparent from other sources. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses, defined benefit pension liability, stock-based compensation and recognition of research grants. Our actual results may differ from these estimates under different assumptions or conditions. During the three months ended March 31, 2026, there were no material changes to our critical accounting policies. For additional information, see Item 8 of Part II, "Financial Statements and Supplementary Data — Note 2 — Summary of Significant Accounting Policies" of our Annual Report and Item 1 of Part I, "Financial Statements — Note 2 — Summary of Significant Accounting Policies" of this Quarterly Report. Although we believe that our estimates, assumptions, and judgments are reasonable, they are based upon information presently available. Actual results may differ significantly from these estimates under different assumptions, judgments, or conditions.

#### Jumpstart Our Business Startups ("JOBS") Act
We qualify as an "emerging growth company", as defined in the JOBS Act. For so long as we remain an emerging growth company, we are permitted and plan to rely on exemptions from certain disclosure requirements that are applicable to public companies that are not emerging growth companies. These provisions include, but are not limited to: being permitted to report only two years of audited financial statements and only two years of related selected financial data and management's discussion and analysis of financial conditions and results of operations disclosure; an exemption from compliance with the auditor attestation requirement in the assessment of our internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act; reduced disclosure obligations regarding executive compensation arrangements in our periodic reports, registration statements and proxy statements; and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. In addition, the JOBS Act permits emerging growth companies to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. As a result, the information we provide might be different from the information that is available for other public companies. We cannot predict whether investors will find our common stock less attractive if we rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock, and the market price of our common stock may be more volatile.

We will remain an emerging growth company until the earliest of (i) the last day of our first fiscal year in which we have total annual gross revenue of $1.235 billion or more, (ii) December 31, 2026, (iii) the date on which we have issued more than $1.0 billion of non-convertible debt instruments during the previous three fiscal years or (iv) the date on which we are deemed a "large accelerated filer" under the rules of the SEC with at least $700 million of outstanding equity securities held by non-affiliates.

#### Item 3. Quantitative and Qualitative Disclosures About Market Risk.
Under SEC rules and regulations, because we are a "smaller reporting company", we are not required to provide the information required by this item in this Quarterly Report.

#### Item 4. Controls and Procedures.

#### Evaluation of Disclosure Controls and Procedures
We maintain "disclosure controls and procedures," as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is (i) recorded, processed, summarized and reported, within the time periods specified in the SEC's rules and forms and (ii) accumulated and communicated to our management, including our principal executive officer and principal financial officer, to allow timely decisions regarding required disclosure. Our management, with the participation of our Chief Executive Officer and Principal Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2026. Based upon the evaluation, our Chief Executive Officer and Principal Financial Officer concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.

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Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost benefit relationship of possible controls and procedures.

#### Changes in Internal Control over Financial Reporting
There were no changes in our internal control over financial reporting (as defined in Rules 13a15(f) and 15d-15(f) under the Exchange Act) during the period covered by this Quarterly Report that have materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

#### Inherent Limitations on Effectiveness of Controls
Our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable assurance of achieving the desired control objectives. Our management recognizes that any control system, no matter how well designed and operated, is based upon certain judgments and assumptions and cannot provide absolute assurance that its objectives will be met. Similarly, an evaluation of controls cannot provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected.

#### PART II—OTHER INFORMATION

#### Item 1. Legal Proceedings.
On January 21, 2026, Andrew Schwartzberg filed a complaint (the "Original Complaint") against the Company and Gene Mack in the United States District Court for the District of Delaware. The Original Complaint alleges that we and Mr. Mack failed to honor an alleged agreement to amend the exercise price of Mr. Schwartzberg's outstanding warrants, which agreement the Original Complaint alleges was made to induce Mr. Schwartzberg's further investment in the Company. We and Mr. Mack moved to dismiss the Original Complaint on March 31, 2026. In response to that dismissal motion, on April 14, 2026, Mr. Schwartzberg filed an amended complaint (the "Amended Complaint") that asserts the following claims: (1) breach of contract against the Company; (2) fraudulent inducement against us and Mr. Mack; (3) promissory estoppel against us and Mr. Mack; and (4) breach of the implied covenant of good faith and fair dealing against the Company. The Amended Complaint seeks the following relief: (1) monetary damages in excess of $3.1 million; and (2) pre- and post-judgment interest. On April 28, 2026, we and Mr. Mack filed a motion to dismiss the Amended Complaint. Mr. Schwartzberg's response to that motion is due on May 12, 2026. We and Mr. Mack intend to vigorously defend against the action.

#### Item 1A. Risk Factors.
Our operations and financial results are subject to various risks and uncertainties, including those described in Part I, Item 1A, "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2025, filed with the SEC on March 26, 2026.

#### Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.
None.

#### Item 3. Defaults Upon Senior Securities.
Not applicable.

#### Item 4. Mine Safety Disclosures.
Not applicable.

[**Table of Contents**](#TOC)

#### Item 5. Other Information.
**Insider Trading Arrangements and Policies**

During the quarter ended March 31, 2026, none of our directors or officers adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as those terms are defined in Regulation S-K, Item 408, that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

[**Table of Contents**](#TOC)

#### Item 6. Exhibits.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  |  | Incorporated by Reference | Incorporated by Reference | Incorporated by Reference | Incorporated by Reference |
| Exhibit No. | Exhibit Description | Form<br><BORDER_TOP> | File No.<br><BORDER_TOP> | Exhibit<br><BORDER_TOP> | Filing Date<br><BORDER_TOP> |
| 3.1 | [Amended and Restated Certificate of Incorporation of Gain Therapeutics, Inc.](https://www.sec.gov/Archives/edgar/data/1819411/000114036121009490/nt10015006x18_ex3-1.htm) | 8-K | 001-40237 | 3.1 | 3/17/2021 |
| 3.2 | [Amended and Restated Bylaws of Gain Therapeutics, Inc.](https://www.sec.gov/Archives/edgar/data/1819411/000114036121009490/nt10015006x18_ex3-2.htm) | 8-K | 001-40237 | 3.2 | 3/17/2021 |
| 3.3 | [Certificate of Amendment of Amended and Restated Certificate of Incorporation of Gain Therapeutics, Inc., filed with the Secretary of State of the State of Delaware on June 24, 2025.](https://www.sec.gov/Archives/edgar/data/1819411/000110465925062162/tm2518700d1_ex3-1.htm) | 8-K | 001-40237 | 3.1 | 6/24/2025 |
| 31.1\* | [Certification of Principal Executive Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](ganx-20260331xex31d1.htm) |  |  |  |  |
| 31.2\* | [Certification of Principal Financial Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002](ganx-20260331xex31d2.htm). |  |  |  |  |
| 32.1† | [Certifications of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](ganx-20260331xex32d1.htm) |  |  |  |  |
| 101.INS\* | Inline XBRL Instance Document |  |  |  |  |
| 101.SCH\* | Inline XBRL Taxonomy Extension Schema Document |  |  |  |  |
| 101.CAL\* | Inline XBRL Taxonomy Extension Calculation Linkbase Document |  |  |  |  |
| 101.DEF\* | Inline XBRL Taxonomy Extension Definition Linkbase Document |  |  |  |  |
| 101.LAB\* | Inline XBRL Taxonomy Extension Label Linkbase Document |  |  |  |  |
| 101.PRE\* | Inline XBRL Taxonomy Extension Presentation Linkbase Document |  |  |  |  |
| 104\* | Cover Page Interactive Data File (formatted as Inline XBRL and embedded within the iXBRL document) |  |  |  |  |

---

\*Filed herewith.

+ Management contract or compensatory plan or arrangement.

† This certification is being furnished solely to accompany this Quarterly Report pursuant to 18 U.S.C Section 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference into any filing by the registrant under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

[**Table of Contents**](#TOC)

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

---

| | |
|:---|:---|
|  | GAIN THERAPEUTICS, INC. |
|  | (Registrant) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;May 11, 2026 | By: /s/ Gene Mack |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date | Gene Mack |
|  | Chief Executive Officer |
|  | *(Principal Executive Officer)* |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;May 11, 2026 | By: /s/ Gianluca Fuggetta |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date | Gianluca Fuggetta |
|  | Senior Vice President Finance |
|  | *(Principal Financial Officer and Principal Accounting Officer)* |

---

## Exhibit 31.1

**Exhibit 31.1**

**Management Certification Pursuant to**

**Section 302 of the Sarbanes-Oxley Act of 2002**

I, Gene Mack, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026 of Gain Therapeutics, Inc.;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;May 11, 2026 | /s/ Gene Mack |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date | Gene Mack |
|  | Chief Executive Officer |
|  | *(Principal Executive Officer)* |

---

------

## Exhibit 31.2

**Exhibit 31.2**

**Management Certification Pursuant to**

**Section 302 of the Sarbanes-Oxley Act of 2002**

I, Gianluca Fuggetta, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026 of Gain Therapeutics, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

---

| | |
|:---|:---|
| 0<br>|  |
| May 11, 2026 | /s/ Gianluca Fuggetta |
| Date | Gianluca Fuggetta |
|  | Senior Vice President Finance |
|  | *(Principal Financial Officer and Principal Accounting Officer)* |

---

------

## Exhibit 32.1

**Exhibit 32.1**

**Certification of CEO and PFO Pursuant to**

**18 U.S.C. Section 1350, as Adopted Pursuant to**

**Section 906 of the Sarbanes-Oxley Act of 2002**

In connection with the Quarterly Report on Form 10-Q of Gain Therapeutics, Inc. (the "Company") for the quarterly period ended March 31, 2026 to which this certification is attached as Exhibit 32.1 (the "Report"), Gene Mack, as Chief Executive Officer of the Company, and Gianluca Fuggetta, as Principal Financial Officer of the Company, each hereby certifies, pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, (the "Exchange Act") and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. §-1350), that, to the best of their knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 11, 2026

---

| | |
|:---|:---|
| /s/ <br>|  |
|  | /s/ Gene Mack |
|  | Gene Mack |
|  | Chief Executive Officer |
|  | *(Principal Executive Officer)* |

---

---

| |
|:---|
| /s/ Gianluca Fuggetta |
| Gianluca Fuggetta |
| Senior Vice President Finance |
| *(Principal Financial Officer and Principal Accounting Officer)* |

---

This certification accompanies the Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Gain Therapeutics, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form 10-Q), irrespective of any general incorporation language contained in such filing.

------