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Form 8-K

sec.gov

8-K — Incannex Healthcare Inc.

Accession: 0001213900-26-087493

Filed: 2026-08-11

Period: 2026-08-11

CIK: 0001873875

SIC: 2834 (PHARMACEUTICAL PREPARATIONS)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — ea0301333-8k_incannex.htm (Primary)

EX-99.1 — PRESS RELEASE DATED AS OF AUGUST 11, 2026 (ea030133301ex99-1.htm)

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8-K — CURRENT REPORT

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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 11, 2026

Incannex Healthcare

Inc.

(Exact name of registrant

as specified in its charter)

Delaware

001-41106

93-2403210

(State or other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

Rialto South Tower

Level 23, 525 Collins Street

Melbourne, VIC 3008 Australia

Not applicable

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone

Number, including Area Code: +61 409 840 786

(Former Name or

Former Address, if Changed Since Last Report): Not Applicable

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

Name of exchange on which registered

Common Stock, $0.0001 par value per share

IXHL

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

11, 2026, Incannex Healthcare Inc. (the “Company”) issued the press release furnished as Exhibit 99.1.

The information

contained in Item 7.01 in this Current Report on Form 8-K and Exhibit 99.1 attached hereto is intended to be furnished 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 they be deemed 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 filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.

Description

99.1

Press Release dated as of August 11, 2026

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

1

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.

Incannex Healthcare Inc.

Date: August 11, 2026

/s/ Joel Latham

Name:

Joel Latham

Title:

Chief Executive Officer and President

2

EX-99.1 — PRESS RELEASE DATED AS OF AUGUST 11, 2026

EX-99.1

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Exhibit 99.1

Incannex Receives Additional A$5.1 Million R&D

Tax Incentive Refund, Completing More Than A$11.2 Million

in Non-Dilutive Capital Received in 2026

Completion of more than A$11.2 million in non-dilutive

capital received under the Australian

Government’s R&D Tax Incentive Program further strengthens Company’s balance sheet

and financial flexibility

NEW YORK and MELBOURNE, Australia, Tuesday, 11 August, 2026 – Incannex

Healthcare Inc. (Nasdaq: IXHL) (“Incannex” or the “Company”), a clinical-stage biopharmaceutical company advancing

innovative combination therapies and psychedelic-assisted treatments, today announced it has received the final A$5,102,788.30 refund

under the Australian Government’s Research and Development Tax Incentive Program following approval of the Company’s overseas

findings and amendment of its FY25 income tax return.

Together with the previously announced A$6,039,162.43 refund, Incannex

has now received more than A$11.2 million in non-dilutive capital during 2026. The receipt further enhances Incannex’s already strong

cash position and debt-free balance sheet, providing additional financial flexibility to advance its clinical pipeline while continuing

to pursue shareholder-focused capital allocation initiatives.

Highlights

● Received the final A$5.1 million R&D Tax Incentive refund following approval of overseas findings, further strengthening the Company’s

balance sheet with non-dilutive capital. Incannex expects to receive additional R&D Tax Incentive funding in 2027 in respect of eligible

ongoing research and development activities.

● The refund recognizes the significant eligible Australian research and development activities undertaken by the Company in developing

therapeutic regimens designed to address challenging chronic conditions during the financial year ended 30 June 2025.

● Total FY25 R&D Tax Incentive proceeds now exceed A$11.2 million

● Entire amount received as non-dilutive capital, with no shareholder dilution

● Further strengthens the Company’s already robust balance sheet and financial flexibility

● Supports continued advancement of key clinical assets, including IHL-42X and PSX-001

● Reinforces disciplined capital management and shareholder-focused capital allocation strategy

The Australian Government’s Research and Development Tax Incentive

Program is designed to encourage innovation by providing eligible companies with cash refunds for qualifying research and development

activities.

Following approval of the Company’s overseas findings, Incannex

amended its FY25 income tax return, resulting in the additional refund announced today. This outcome reflects the Company’s successful

execution of its strategy to maximize eligible R&D incentives while continuing to invest in the advancement of its clinical pipeline.

Importantly, these proceeds are entirely non-dilutive, enabling Incannex

to recover a substantial portion of eligible research and development expenditure without issuing additional equity or taking on debt.

At a time when many biotechnology companies continue to rely on dilutive capital raises to fund operations, the Company believes this

outcome further differentiates the strength of its financial position and disciplined approach to capital management.

Joel Latham, President and Chief Executive Officer of Incannex Healthcare,

commented:

“The receipt of this final refund completes more than A$11.2

million in non-dilutive capital received under the Australian Government’s Research and Development Tax Incentive Program and represents

another significant achievement for Incannex and our shareholders.

“Combined with our existing cash position and debt-free balance

sheet, this additional capital further enhances our financial flexibility as we continue advancing our late-stage clinical pipeline, including

IHL-42X and PSX-001, while maintaining a strong focus on shareholder returns.

“We believe the market continues to significantly undervalue

the strength of our balance sheet relative to our enterprise value. The completion of more than A$11.2 million in non-dilutive funding

further reinforces our ability to execute on our strategy, fund the continued advancement of our clinical programs and pursue shareholder-focused

capital allocation initiatives from a position of financial strength.”

About Incannex Healthcare Inc.

Incannex Healthcare Inc. is a clinical-stage biopharmaceutical company

developing innovative combination therapies and next-generation medicines for conditions with significant unmet medical need. The Company’s

lead programs include IHL-42X for obstructive sleep apnea, IHL-675A for rheumatoid arthritis and PSX-001 for generalized anxiety disorder.

Incannex is committed to advancing therapies that address multiple biological pathways with the goal of improving patient outcomes and

creating long-term shareholder value. For more information, please visit www.incannex.com.

Forward-Looking Statements

Certain statements in this press release may constitute “forward-looking

statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995, as amended to date. These

statements include, but are not limited to, statements relating to management’s expectations regarding the development, regulatory

progress and commercialization of the Company’s drug candidates, the potential value of the Company’s drug candidates and

business, and potential shareholder value. When or if used in this communication, the words “may,” “could,” “should,”

“anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,”

“predict” and similar expressions and their variants, as they relate to the Company, its operations or its management, may

identify forward-looking statements. The forward-looking statements contained in this press release are based on management’s current

expectations and projections about future events. Nevertheless, actual results or events could differ materially from the plans, intentions,

and expectations disclosed in, or implied by, the forward-looking statements. These risks and uncertainties, many of which are beyond

our control, include: the risk that the Company’s estimates and current projections regarding the sufficiency of its current cash

on hand to fund the Company’s planned operations may be incorrect and the Company may use these resources faster than anticipated,

risks associated with the clinical development of IHL-42X and PSX-001, and other risks described in the section entitled “Risk Factors”

described in the Company’s annual report on Form 10-K for the fiscal year ended June 30, 2025, filed with the SEC on September 29,

2025, and the other reports it files from time to time, including subsequently filed annual, quarterly and current reports, which can

be obtained on the SEC website at www.sec.gov and are made available on the Company’s website upon their filing with the SEC. Readers

are cautioned not to place undue reliance on the forward-looking statements, which speak only as of the date on which they are made and

reflect management’s current estimates, projections, expectations and beliefs. The Company does not plan to update any such forward-looking

statements and expressly disclaims any duty to update the information contained in this press release except as required by law.

Investor & Media Contacts

CORE IR

(212) 655-0924

investors@incannex.com

media@incannex.com.au

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