Form 8-K

8-K — Myseum.AI, Inc.

Accession: 0001213900-26-101814

Filed: 2026-09-21

Period: 2026-09-21

CIK: 0001648960

SIC: 4822 (TELEGRAPH & OTHER MESSAGE COMMUNICATIONS)

Item: Entry into a Material Definitive Agreement

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — ea0305991-8k_myseum.htm (Primary)

EX-1.1 — SECOND AMENDMENT TO SALES AGREEMENT (ea030599101ex1-1.htm)

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8-K — CURRENT REPORT

8-K (Primary)

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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):

September 21, 2026

MYSEUM.AI, INC.

(Exact name of registrant as specified in its charter)

Nevada

001-40729

47-2502264

(State or other jurisdiction

of incorporation)

(Commission File Number)

(I. R. S. Employer

Identification No.)

65 Church Street, Suite 230

New Brunswick, NJ 08901

(Address of principal executive offices, including

ZIP code)

(732) 374-3529

(Registrant’s telephone number, including

area code)

N/A

(Former name or former address, if changed since

last report)

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, $0.0001 par value

MYSE

The Nasdaq Stock Market LLC

Series A Warrants, each warrant exercisable for one share of Common Stock at an exercise price of $49.80

MYSEW

The Nasdaq Stock Market LLC

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))

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 1.01 Entry into

a Definitive Material Agreement

On September 21,

2026, Myseum,AI, Inc. (the “Company”) entered into a Second Amendment to Sales Agreement (the “Second

Amendment”) with The Benchmark Company, LLC or Benchmark, which Second Amendment amends that certain Sales Agreement dated

February 10, 2025 as amended by that certain First Amendment to Sales Agreement dated February 6, 2026 (as amended, the “Sales

Agreement”).to assign Benchmark’s obligations under the Sales Agreement to StoneX Financial Inc., an affiliate of

Benchmark. All references to “The Benchmark Company, LLC” as the “Sales Agent” in the Sales Agreement are

hereafter be deemed to refer to StoneX Financial Inc., an SEC-registered broker-dealer and member of FINRA and SIPC. The defined

term “Sales Agent” as used in the Sales Agreement shall mean StoneX Financial Inc.

The foregoing description

of the Second Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the Second Amendment

which is filed as Exhibit 1.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 8.01 Other Events.

On September 21, 2026, the Company filed Amendment

No. 2 to the prospectus supplement dated February 6, 2026 and filed with the Securities and Exchange Commission (the “Commission”)

on February 6, 2026, as supplemented by Amendment No. 1 to the prospectus supplement dated April 23, 2026 and filed with the Commission

on April 23, 2026 to reflect the Company’s entry into the Second Amendment with Benchmark reflect Benchmark’s assignment of

its rights, interests, and obligations under the Sales Agreement StoneX Financial Inc., an affiliate of Benchmark.

Item 9.01 Financial Statements and Exhibits.

(d)

Exhibits.

Exhibit No.

Description of Exhibit

1.1

Second Amendment to Sales Agreement

104

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

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.

Date: September 21, 2026

MYSEUM.AI, INC.

/s/ Darin Myman

Darin Myman

Chief Executive Officer

EX-1.1 — SECOND AMENDMENT TO SALES AGREEMENT

EX-1.1

Filename: ea030599101ex1-1.htm · Sequence: 2

Exhibit 1.1

SECOND AMENDMENT TO

SALES AGREEMENT

This Second

Amendment to Sales Agreement (this “Amendment”) is made and entered into as of September 21, 2026, by and

between Myseum.AI, Inc. (formerly known as DatChat, Inc., a Nevada corporation (the “Company”), and The Benchmark

Company, LLC (the “Sales Agent”).

RECITALS

WHEREAS, the Company and the

Sales Agent entered into that certain Sales Agreement, dated as of February 10, 2025 (the “Sales Agreement”), pursuant to

which the Sales Agent agreed to act as the Sales Agent for the at-the-market offering of shares of the Company’s common stock, par

value $0.0001 per share, pursuant to a Registration Statement on Form S-3;

WHEREAS, Benchmark and StoneX

Financial Inc. (“SFI”) are affiliated companies under StoneX Group Inc., and each is a broker-dealer registered with the U.S.

Securities and Exchange Commission (“SEC”) and a member of the Financial Industry Regulatory Authority (“FINRA”)

and the Securities Investor Protection Corporation (“SIPC”);

WHEREAS, as part of an internal

transfer of certain assets and client relationships within the StoneX corporate family, Benchmark assigned all of its rights, interests,

and obligations under the Sales Agreement to SFI, effective as of the date of this Amendment, as permitted under Section 13 of the Sales

Agreement; and

WHEREAS, the parties desire to

amend the Sales Agreement to reflect the substitution of SFI for Benchmark as the Sales Agent thereunder and to update the related notice

provisions.

NOW, THEREFORE, in consideration

of the mutual agreements contained herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby

acknowledged, the parties agree as follows:

1. Definitions. All references to “The Benchmark Company, LLC” as the “Sales Agent”

in the Agreement shall hereafter be deemed to refer to StoneX Financial Inc., an SEC-registered broker-dealer and member of FINRA and

SIPC (CRD No. 45993). The defined term “Sales Agent” as used in the Agreement shall mean StoneX Financial Inc.

2. Amendment to Notices (Section 12). All notices, requests, demands, and other communications required

or permitted to be given to the Sales Agent under Section 12 of the Sales Agreement shall be delivered to StoneX Financial Inc. at an

address to be provided by StoneX Financial in writing to the Company, in lieu of the address of The Benchmark Company, LLC at 230 Park

Ave, 10th floor, New York, NY 10169.

3. Remaining Validity. All other terms and conditions of the Sales Agreement are hereby reaffirmed

and remain unchanged and in full force and effect.

4. Governing Law. This Amendment shall be governed by and construed in accordance with the internal

laws of the State of New York, without regard to the conflict of laws principles thereof.

5. Counterparts. This Amendment may be executed in one or more counterparts, each of which shall be

deemed an original, and all of which together shall constitute one and the same instrument.

6. Effective Date. This Amendment shall be effective as of September 21, 2026.

IN WITNESS WHEREOF, the

parties hereto have caused this Amendment to be duly executed as of the date first written above.

MYSEUM.AI, INC.

By:

/s/ Darin Myman

Name:

Darin Myman

Title:

Chief Executive Officer

The Benchmark Company, LLC

By:

/s/ John J. Borer III

Name:

John J. Borer III

Title:

Senior Managing Director

STONEX FINANCIAL INC.

By:

/s/ John J. Borer III

Name:

John J. Borer III

Title:

Senior Managing Director

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