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Arcturus Therapeutics (ARCT) to present ARCT-810 poster, more data due this quarter

(Moderate)
(Neutral)
Form Type
8-K

Rhea-AI Filing Summary

Arcturus Therapeutics Holdings Inc. (ARCT) reports that on August 25, 2026 it will present a scientific poster titled “Impact of ARCT-810 mRNA Therapy on Dietary Intake and Biochemical Data in Adolescents and Adults with Ornithine Transcarbamylase Deficiency” at the 2026 Annual Symposium of the Society for the Study of Inborn Errors of Metabolism in Helsinki, Finland. The company states that additional data and the regulatory plan for the ARCT-810 program are expected to be communicated later this quarter. The ARCT-810 presentation is provided as Exhibit 99.1 and is described as furnished, not deemed filed or incorporated by reference into other securities law reports.

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Item 7.01 Regulation FD Disclosure Disclosure
Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.
Item 9.01 Financial Statements and Exhibits Exhibits
Financial statements, pro forma financial information, or exhibit attachments filed with this report.
Presentation date August 25, 2026 Date of ARCT-810 poster presentation at the 2026 Annual Symposium
Exhibit number for ARCT-810 presentation Exhibit 99.1 Exhibit containing the ARCT-810 poster presentation
Cover page exhibit Exhibit 104 Cover page provided in Inline XBRL format
Company telephone number (858) 900-2660 Registrant’s telephone number at principal executive offices
Regulation FD regulatory
"Item 7.01. Regulation FD Disclosure."
Regulation FD is a rule that prevents company insiders, like executives, from sharing important information with some people before others get it. It matters because it helps ensure all investors have equal access to key news, making the stock market fairer and reducing chances of insider trading.
Ornithine Transcarbamylase Deficiency medical
"therapy ... in Adolescents and Adults with Ornithine Transcarbamylase Deficiency"
Ornithine transcarbamylase deficiency is an inherited metabolic disorder in which the liver cannot effectively remove ammonia, a toxic byproduct of protein breakdown, leading to dangerous ammonia buildup. For investors, it matters because the condition creates demand for specialized diagnostics, chronic treatments and potential one-time gene therapies; think of it like a broken household waste-removal system that requires ongoing fixes or a permanent repair, creating commercial and regulatory opportunities and risks.
mRNA Therapy medical
"Impact of ARCT-810 mRNA Therapy on Dietary Intake and Biochemical Data"
mRNA therapy uses messenger RNA — the cellular instruction molecules — to tell a patient’s cells to produce a desired protein, such as one that fights disease or corrects a malfunction. Think of it as delivering a short recipe so cells can make a medicine internally; this approach can be faster to design but depends on clinical success, manufacturing capacity and regulatory approval, all of which strongly affect investment risk and potential reward.
Inborn Errors of Metabolism medical
"Society for the Study of Inborn Errors of Metabolism"
Inherited genetic disorders that prevent the body from breaking down or using certain nutrients and chemicals, like a factory assembly line that can’t process specific parts. They matter to investors because they create lasting demand for specialized diagnostics, drugs and care; advances, approvals or pricing changes can reshape the commercial outlook for companies working on tests, therapies or services for these conditions.
Inline XBRL technical
"Cover Page to this on in Inline XBRL"
Inline XBRL is a file format for financial filings that embeds machine-readable data tags directly inside the human-readable report, so the same document can be read by people and parsed by software. For investors it makes extracting, comparing and verifying financial numbers faster and more reliable—like a grocery list where each item also has a barcode—reducing manual errors and speeding up analysis.

FAQ

What did ARCT (Arcturus Therapeutics Holdings Inc.) announce regarding ARCT-810?

Arcturus announced it will present a poster on ARCT-810 mRNA therapy in adolescents and adults with ornithine transcarbamylase deficiency at the 2026 Annual Symposium of the Society for the Study of Inborn Errors of Metabolism in Helsinki, Finland on August 25, 2026.

What future plans did ARCT disclose for the ARCT-810 program?

Arcturus stated that additional data and the regulatory plan for the ARCT-810 program are expected to be communicated later in the same quarter as the symposium presentation.

How is the ARCT-810 presentation by ARCT being made available to investors?

The ARCT-810 presentation is included as Exhibit 99.1. It is described as furnished under a Regulation FD disclosure item rather than filed, and is not incorporated by reference into other securities law reports.

What is the subject of ARCT’s ARCT-810 poster presentation?

The poster is titled “Impact of ARCT-810 mRNA Therapy on Dietary Intake and Biochemical Data in Adolescents and Adults with Ornithine Transcarbamylase Deficiency,” focusing on clinical data in this patient population.

Where and when will ARCT present the ARCT-810 data?

Arcturus will present the ARCT-810 poster on August 25, 2026 at the 2026 Annual Symposium of the Society for the Study of Inborn Errors of Metabolism, which will be held in Helsinki, Finland.

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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): August 25, 2026

 

ARCTURUS THERAPEUTICS HOLDINGS INC.

(Exact name of registrant as specified in its charter)

 

Delaware   001-38942   32-0595345
(State or other jurisdiction
of incorporation)
  (Commission
File Number)
  (I.R.S. Employer
Identification No.)

 

10285 Science Center Drive

San Diego, California 92121 

(Address of principal executive offices)

 

Registrant’s telephone number, including area code: (858) 900-2660

 

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 registered
Common stock, par value $0.001 per share   ARCT   The Nasdaq Stock Market LLC

 

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 August 25, 2026, Arcturus Therapeutics Holdings Inc., a Delaware corporation (the “Company” or “Arcturus”) will present a poster (the “Presentation”) titled “Impact of ARCT-810 mRNA Therapy on Dietary Intake and Biochemical Data in Adolescents and Adults with Ornithine Transcarbamylase Deficiency” at the 2026 Annual Symposium of the Society for the Study of Inborn Errors of Metabolism, to be held in Helsinki, Finland. Additional data and the regulatory plan for this program is expected to be communicated later this quarter.

 

A copy of the Presentation is furnished herewith as Exhibit 99.1 and incorporated into this Item 7.01 by reference.

 

The information in this Item 7.01 of this Current Report on Form 8-K, and the Presentation, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained in this Item 7.01, and in the Presentation, shall not be incorporated by reference into any filing with the Securities and Exchange Commission made by the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

 

Item 9.01 Financial Statements and Exhibits.

 

(d) Exhibits.

 

Exhibit No. Description of Exhibit
   
99.1 Presentation
104 Cover Page to this Current Report on Form 8-K in Inline XBRL

 

 

 

 

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 hereunto duly authorized.

 

  Arcturus Therapeutics Holdings Inc.
Date: August 25, 2026  
  By: /s/ Joseph E. Payne
  Name: Joseph E. Payne
  Title: Chief Executive Officer

 

 

Filing Exhibits & Attachments

3 documents