# EDGAR Filing Document

**Accession Number:** 0001829635
**File Stem:** 0001104659-26-001097
**Filing Date:** 2026-1
**Character Count:** 12270
**Document Hash:** 7b0c5ae289123d84f3500c4c9fed6260
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-001097.hdr.sgml**: 20260106

**ACCESSION NUMBER**: 0001104659-26-001097

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260106

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260106

**DATE AS OF CHANGE**: 20260106

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Transcode Therapeutics, Inc.
- **CENTRAL INDEX KEY:** 0001829635
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 811065054
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40363
- **FILM NUMBER:** 26509455

**BUSINESS ADDRESS:**
- **STREET 1:** 6 LIBERTY SQUARE
- **STREET 2:** #2382
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109
- **BUSINESS PHONE:** 857-301-6857

**MAIL ADDRESS:**
- **STREET 1:** 6 LIBERTY SQUARE
- **STREET 2:** #2382
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109

?xml version='1.0' encoding='ASCII'?

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT** 

**Pursuant to Section 13 or 15(d)** 

**of the Securities Exchange Act of 1934** 

**Date of Report (Date of earliest event reported): January 6, 2026**

**TRANSCODE THERAPEUTICS, INC.**

**(Exact name of registrant as specified in its charter)**

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-40363** | **81-1065054** |
| **(State or other jurisdiction<br> of incorporation)** | **(Commission<br> File Number)** | **(I.R.S. Employer<br> Identification No.)** |

---

**TransCode Therapeutics, Inc.**

**6 Liberty Square** **, #2382**

**Boston** **, Massachusetts 02109**

**(Address of principal executive offices, including zip code)**

**(857) 837-3099**

**(Registrant's telephone number, including area code)**

**Not Applicable**

**(Former Name or Former Address, if Changed Since Last Report)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

◻ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

◻ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

◻ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

◻ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading symbol(s)** | **Name of each exchange on which <br> registered** |
| **Common Stock, par value $0.0001 per share** | **RNAZ** | **The Nasdaq** **Capital Market** |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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. ◻

**Item 7.01 Regulation FD Disclosure.**

On January 6, 2026, TransCode Therapeutics, Inc. ("TransCode") issued a press release announcing the publication of preclinical research regarding the application of its lead candidate, TTX-MC138, for the treatment of glioblastoma multiforme. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information in this Item 7.01, including Exhibit 99.1 hereto, is being furnished herewith and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the "Securities Act"), or the Exchange Act, except as expressly set forth by specific reference in such a filing.

**Item 9.01 Financial Statements and Exhibits.**

(d) Exhibits

---

| | |
|:---|:---|
| Exhibit No. | Description |
| [99.1](tm261878d1_ex99-1.htm) | [Press Release, dated January 6, 2026](tm261878d1_ex99-1.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

**SIGNATURE**

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 hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **TransCode Therapeutics, Inc.** | **TransCode Therapeutics, Inc.** |
| Date: January 6, 2026 | By: | /s/ Philippe P. Calais |
|  |  | Philippe P. Calais |
|  |  | Chief Executive Officer |

---

## Exhibit 99.1

**Exhibit 99.1**

**TransCode Therapeutics Announces Publication of Preclinical Data Supporting Therapeutic Potential of TTX-MC138 in Glioblastoma**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· *TTX-MC138 is delivered to glioblastoma tumors in murine models of the disease, following intravenous injection*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· *TTX-MC138 demonstrated suppression of miR-10b target and extended survival in aggressive glioblastoma models*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· *Study supports future clinical development of TTX-MC138 for patients with glioblastoma* 

BOSTON, January 6, 2026 - TransCode Therapeutics, Inc. (NASDAQ: RNAZ), a clinical stage company pioneering immuno-oncology and RNA therapeutics for the treatment of high risk and advanced cancer, today announced the publication of preclinical research supporting the application of its lead candidate, TTX-MC138, for the treatment of glioblastoma multiforme (GBM). The article was published in the peer-reviewed *Journal of Functional Biomaterials* (Volume 17, Issue 1). The study, entitled "Nanotherapy Targeting miR-10b Improves Survival in Orthotopic Glioblastoma Models," resulted from a collaboration between TransCode and Michigan State University. The study was led by Dr. Anna Moore, Professor, Director of the Precision Health Program, and Associate Dean for Research Development at the College of Human Medicine at Michigan State University and scientific co-founder of TransCode.

Glioblastoma is the most aggressive primary brain cancer, with median survival under two years from diagnosis despite current standard-of-care interventions. The molecular target of TTX-MC138, microRNA10-b (miR-10b), is highly expressed in GBM cells where it drives tumor survival, growth and invasiveness.

The study demonstrated delivery of TTX-MC138 to human GBM tumors implanted into the brains of murine models after intravenous injection, resulting in sustained target engagement within the tumor. TTX-MC138 also induced apoptotic activity in tumors by five-fold, consistent with observed induction of tumor cell death. Importantly, treatment with TTX-MC138 resulted in a statistically significant increase in survival.

These findings demonstrate the capability of TransCode's TTX platform to systemically deliver antisense oligonucleotides (ASOs) to brain neoplasms and further supports its potential utility in overcoming key delivery barriers, including nucleic acid degradation and limited tumor penetration. Considering that investigational new drug (IND) enabling studies as well as pharmacokinetics, biodistribution, and required toxicity studies for TTX-MC138 have already been completed and that the formulation has shown appreciable safety in Phase I clinical trials in patients with non-central nervous system (CNS) cancers, these results support advancing TTX-MC138 to future clinical evaluation in patients with GBM.

"This research represents an important step forward in targeting one of the most treatment-resistant forms of cancer," said Dr. Zdravka Medarova, CSO of TransCode. "By pairing our differentiated delivery approach with robust biological support, we are broadening the potential reach of our RNA-based therapeutics beyond metastatic solid tumors," added Dr. Medarova.

TTX-MC138 is currently evaluated in metastatic disease in a Phase 1a clinical trial, with a Phase 2a clinical trial anticipated to begin in the first half of 2026, underscoring the translational relevance of this approach.

**About TransCode Therapeutics**

TransCode Therapeutics is a clinical stage company pioneering immuno-oncology and RNA therapeutic treatments of high risk and advanced cancers. The company's lead therapeutic candidate, TTX-MC138, is focused on treating metastatic tumors that overexpress microRNA-10b, a unique, well-documented biomarker of metastasis. In addition, TransCode has a portfolio of other first-in-class therapeutic candidates designed to mobilize the immune system to recognize and destroy cancer cells. For more information, visit www.transcodetherapeutics.com.

**Forward-Looking Statements**

This release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, including, without limitation, statements concerning the value of TTX-MC138 for the treatment of GBM, statements concerning the timing, conduct and results of TransCode's collaborations, statements concerning TransCode's clinical trials, statements concerning the timing of clinical trials, statements about microRNAs and their involvement in cancer, statements concerning the therapeutic potential of TransCode's TTX delivery platform and statements concerning the therapeutic potential of TransCode's TTXMC138 and other therapeutic candidates. Any forward-looking statements in this press release are based on management's current expectations of future events and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to: the risks associated with drug discovery and development; the risk that the results of clinical trials will not be consistent with TransCode's preclinical studies or expectations or with results from previous clinical trials; risks associated with the conduct of clinical trials; risks associated with TransCode's financial condition and its need to obtain additional funding to support its business activities, including TransCode's ability to continue as a going concern; risks associated with the timing and outcome of TransCode's planned regulatory submissions; risks associated with obtaining, maintaining and protecting intellectual property; risks associated with TransCode's ability to enforce its patents against infringers and defend its patent portfolio against challenges from third parties; risks of competition from other companies developing products for similar uses; risks associated with TransCode's dependence on third parties; and risks associated with geopolitical events and pandemics, including the COVID-19 coronavirus and military actions. For a discussion of these and other risks and uncertainties, and other important factors, any of which could cause TransCode's actual results to differ from those contained in or implied by the forward-looking statements, see the section entitled "Risk Factors" in TransCode's Annual Report on Form 10-K for the year ended December 31, 2024, as well as discussions of potential risks, uncertainties and other important factors in any subsequent TransCode filings with the Securities and Exchange Commission. All information in this press release is as of the date of this release; TransCode undertakes no duty to update this information unless required by law.

**For more information and partnering opportunities, please contact:**

TransCode Therapeutics, Inc. <br> Tania Montgomery, VP of Business Development <br> tania.montgomery@transcodetherapeutics.com