# EDGAR Filing Document

**Accession Number:** 0001826667
**File Stem:** 0001628280-26-023991
**Filing Date:** 2026-4
**Character Count:** 15399
**Document Hash:** ae6e4ebca9c995e29f1932a8972e18af
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-023991.hdr.sgml**: 20260407

**ACCESSION NUMBER**: 0001628280-26-023991

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260401

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260407

**DATE AS OF CHANGE**: 20260407

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TriSalus Life Sciences, Inc.
- **CENTRAL INDEX KEY:** 0001826667
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 853009869
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39813
- **FILM NUMBER:** 26843134

**BUSINESS ADDRESS:**
- **STREET 1:** 6272 WEST 91ST AVENUE
- **CITY:** WESTMINSTER
- **STATE:** CO
- **ZIP:** 80031
- **BUSINESS PHONE:** 415 336 8917

**MAIL ADDRESS:**
- **STREET 1:** 6272 WEST 91ST AVENUE
- **CITY:** WESTMINSTER
- **STATE:** CO
- **ZIP:** 80031

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MedTech Acquisition Corp
- **DATE OF NAME CHANGE:** 20200930

?xml version='1.0' encoding='ASCII'? tlsi-20260401

**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):** April 1, 2026

**TRISALUS LIFE SCIENCES, INC.**

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

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| | | |
|:---|:---|:---|
| **Delaware** | **001-39813** | **85-3009869** |
| (State or other jurisdiction of<br>incorporation or organization) | (Commission<br>File Number) | (I.R.S. Employer<br>Identification No.) |
| **6272 W 91st Ave, Westminster, Colorado** | | **80031** |
| (Address of principal executive office) | | (Zip Code) |

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**(888) 321-5212**

(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 obligations of the registrant under any of the following provisions (see General Instruction A.2. below): | Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations of the registrant under any of the following provisions (see General Instruction A.2. below): |
| □ | Written communication 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)) |

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

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| Common stock, $0.0001 par value | **TLSI** | **Nasdaq Global Market** |
| Warrants, each whole warrant exercisable for one share of registrant's common stock at an exercise price of $11.50 per share | **TLSIW** | **Nasdaq Global Market** |

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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. □

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| | |
|:---|:---|
| **Item 5.02** | **Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.** |

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On April 1, 2026, TriSalus Life Sciences, Inc. (the "Company") entered into an offer letter with Dr. Richard Marshall for the position of Chief Medical Officer. Dr. Marshall's employment is expected to start on June 29, 2026 with an annual base salary of $525,000 and a sign on bonus of $250,000. Dr. Marshall will also be eligible for an annual bonus of up to 50% of his annual base salary based on the achievement of financial goals and milestones as determined by the Board of Directors (the "Board"). Following the start of his employment, the Company will recommend to the Board an equity award be granted to Dr. Marshall for 120,000 stock options and 60,000 restricted stock units. In addition, Dr. Marshall will be eligible for an annual equity grant under the Company's Equity Incentive Plan, subject to Board approval.

There have been no related party transactions between Dr. Marshall and the Company that would be required to be disclosed pursuant to Item 404(a) of Regulation S-K.

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| | |
|:---|:---|
| **Item 7.01** | **Regulation FD Disclosure.** |

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On April 7, 2026, the Company issued a press release announcing Dr. Marshall's appointment as Chief Medical Officer of the Company, effective June 29, 2026. A copy of our press release, dated April 7, 2026, announcing Dr. Marshall's appointment is attached hereto as Exhibit 99.1.

The information under this Item 7.01, including Exhibit 99.1, will 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 under that section and it will not be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

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| | |
|:---|:---|
| **Item 9.01** | **Financial Statements and Exhibits.** |
| (d) Exhibits: | |
| Exhibit Number | Description |
| <u>[99.1](tlsipressrelease-drrichard.htm)</u> | Press Release dated April 7, 2026 |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

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**SIGNATURES**

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

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| | | | |
|:---|:---|:---|:---|
| Date: April 7, 2026 | **TriSalus Life Sciences, Inc.** | **TriSalus Life Sciences, Inc.** | **TriSalus Life Sciences, Inc.** |
|  | By: | /s/ David Patience | /s/ David Patience |
|  |  | Name: | David Patience |
|  |  | Title: | Chief Financial Officer |

---

## Exhibit 99.1

**TriSalus Life Sciences Appoints Richard Marshall, M.D., as Chief Medical Officer**

**WESTMINSTER, Colo. — April 7, 2026** — TriSalus Life Sciences, Inc. (Nasdaq: TLSI) (the "Company"), an oncology company integrating novel delivery technology with standard of care therapies, and its investigational immunotherapeutic to transform treatment for patients with solid tumors, today announces the appointment of Richard Marshall, M.D., as Chief Medical Officer on a full-time basis, effective June 29, 2026. Dr. Marshall will transition into the role from his current position as Medical Director, a role he has held since January 2025. In his new capacity, he will lead the Company's medical strategy and provide clinical leadership across development, evidence generation and broader strategic initiatives.

"Dr. Marshall brings a rare combination of frontline clinical insight and deep interventional oncology expertise that is uniquely aligned with our mission. Since joining TriSalus as Medical Director, he has been an invaluable clinical voice in driving the expansion of our TriNav product suite and proprietary Pressure-Enabled Drug Delivery ("PEDD") platform across a broad range of indications beyond the liver." said Mary Szela, President and Chief Executive Officer of TriSalus. "As we continue to see strong physician engagement, utilization and interest in the PEDD platform, Dr. Marshall's appointment as Chief Medical Officer positions us to accelerate the advancement of our clinical and economic advantages data and deliver meaningful impact for patients."

Dr. Marshall is an interventional radiologist with extensive experience spanning interventional oncology, hepatobiliary interventions and trauma care. After graduating from Tulane University School of Medicine, he completed his diagnostic radiology residency at Ochsner Clinic Foundation, where he served as Chief Resident, followed by fellowship training in interventional radiology and interventional oncology at Weill Cornell University and Memorial Sloan Kettering Cancer Center in New York. He joined the faculty at Louisiana State University Health Sciences Center and then Tulane University, both in New Orleans.

During his time at LSU Health Sciences Center, Dr. Marshall developed Louisiana's first Interventional Radiology Residency and led a high-volume clinical practice focused on interventional oncology, hepatobiliary interventions and trauma care. Since 2021, he has also served at Tulane University School of Medicine, where he has remained active in medical student and resident education. His clinical experience has included care for patients undergoing organ transplantation, pediatric interventions, embolization for thyroid disease and uterine fibroids, musculoskeletal pain palliation, venous interventions and palliative care.

"I am honored to step into the Chief Medical Officer role at TriSalus at this important time for the Company," said Dr. Marshall. "TriSalus is working to address significant challenges in the treatment of liver and pancreatic tumors to provide meaningful benefits to patients. I look forward to helping advance the Company's medical and clinical efforts as we continue to build on the potential of the PEDD approach and support better and safer patient outcomes."

Dr. Marshall's appointment reflects TriSalus' continued focus on strengthening its leadership team as the Company advances its PEDD platform, which combines its drug delivery technology with therapeutic development efforts aimed at improving outcomes for patients with solid tumors.

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**About TriSalus Life Sciences**

**Forward Looking Statements**

Statements made in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include, but are not limited to, statements regarding fourth quarter 2025 and full year 2025 financial results and 2026 financial outlook and future profitability, cash flows, and the Company's ability to execute on its strategy. Risks that could cause actual results to differ from those expressed in these forward-looking statements include the risk that the Company will not become profitable on its expected timeline, if at all, the risk that the reported financial results will differ from the estimates provided in this press release, risks associated with clinical development and regulatory approval of drug delivery and pharmaceutical product candidates, including that future clinical results may not be consistent with patient data generated during the Company's clinical trials, the cost and timing of all development activities and clinical trials, unexpected safety and efficacy data observed during clinical studies, the risks associated with the credit facility, including the Company's ability to remain in compliance with all its obligations thereunder to avoid an event of default, the risk that the Company will continue to raise capital through the issuance and sale of its equity securities to fund its operations, the risk that the Company will not be able to achieve the applicable revenue requirements to access additional financing under the credit facility, , changes in expected or existing competition or market conditions, changes in the regulatory environment, unexpected litigation or other disputes, unexpected expensed costs, made in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such

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forward-looking statements. Such statements include, but are not limited to, statements regarding the benefits and potential benefits of the Company's PEDD drug delivery technology, TriNav® system and nelitolimod investigational immunotherapy, and the Company's ability to execute on its strategy. Risks that could cause actual results to differ from those expressed in these forward-looking statements include risks associated with clinical development and regulatory approval of drug delivery and pharmaceutical product candidates, including that future clinical results may not be consistent with patient data generated during the Company's clinical trials, the cost and timing of all development activities and clinical trials, unexpected safety and efficacy data observed during clinical studies, the risks associated with the credit facility, including the Company's ability to remain in compliance with all its obligations thereunder to avoid an event of default, the risk that the Company will continue to raise capital through the issuance and sale of its equity securities to fund its operations, the risk that the Company will not be able to achieve the applicable revenue requirements to access additional financing under the credit facility, the risk that the Company will not become profitable on its expected timeline, if at all, the risk that the reported financial results will differ from the estimates provided in this press release, changes in expected or existing competition or market conditions, changes in the regulatory environment, unexpected litigation or other disputes, unexpected expensed costs, and other risks described in the Company's filings with the Securities and Exchange Commission under the heading "Risk Factors." All forward-looking statements contained in this press release speak only as of the date on which they were made and are based on management's assumptions and estimates as of such date. The Company undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made except as required by law.

**Contacts**

**For Media Inquiries:**

Jeremy Feffer, Managing Director

LifeSci Advisors

212.915.2568 <u>jfeffer@lifesciadvisors.com</u>

**For Investor Inquiries:**

David Patience

Chief Financial Officer

<u>investor.relations@trisaluslifesci.com</u>

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