UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE

SECURITIES EXCHANGE ACT OF 1934

For the month of May 2026

Commission File Number: 001-41639

SMX (SECURITY MATTERS) PUBLIC LIMITED COMPANY

(Exact Name of Registrant as Specified in Charter)

Mespil Business Centre, Mespil House

Sussex Road, Dublin 4, Ireland

Tel: +353-1-920-1000

(Address of Principal Executive Offices) (Zip Code)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒ Form 40-F ☐

~~SMX~~Upon ~~(Security Matters) Public Limited Company (~~the ~~“Company”)~~opening ~~further~~of ~~amended~~business ~~its~~on ~~2022~~June ~~Incentive~~1, ~~Equity Plan~~2026, asSMX ~~amended~~ (~~the “Incentive~~Security ~~Plan”~~Matters), toPublic ~~increase~~Limited ~~the~~Company’s ~~number of authorized Ordinary Shares under the Incentive Plan from approximately 237,730 to 696,105~~ (the “~~Amendment~~Company”). Asordinary ashares will ~~Foreign~~begin ~~Private~~trading ~~Issuer, Nasdaq Rule 5615(a)(3) allows the Company to rely~~ on ~~home country corporate governance practices in lieu of certain of~~ the ~~rules in the~~ Nasdaq ~~Rule~~Capital ~~5600~~Market ~~Series and Rule 5250~~(d“Nasdaq”) ~~and,~~on ~~accordingly,~~a ~~the Company~~post-reverse sostock ~~elected~~split tobasis ~~approve~~under the ~~Amendment~~current ~~without~~symbol ~~stockholder approval~~“SMX”. The ~~Thereafter,~~new ~~the~~CUSIP ~~Company~~number ~~granted an aggregate~~ of ~~458,375 restricted stock units, vesting 75% on~~ the ~~grant~~Company’s ~~date~~ordinary ~~and~~shares ~~25%~~will onbe ~~December~~G8267K216 ~~1, 2026, to its executive officers~~ and ~~directors,~~the ~~and~~new toISIN ~~certain~~code ~~consultants,~~will ~~employees~~be ~~and advisors to the Company~~IE000CNLGHH1.

On May 2, 2025, the Company’s Shareholders approved a proposal to amend the Company’s constitution to allow the Company’s Board of Director’s to consolidate and/or divide all or any of the Company’s classes of shares as the Board of Directors sees fit. As such, Shareholder approval was not required to effect the reverse stock split.

The Company’s Board of Directors’ fixed the split ratio at 2.285:1, every 2.285 ordinary shares of the Company with a nominal value $0.000000002443890203125 per share will be automatically combined into one (1) ordinary share with a nominal value of $0.00000000558603475 per share.

The Reverse Stock Split will reduce the number of outstanding shares of the Company from approximately 1.5 million to 650,000 and will affect all outstanding ordinary shares. Every 2.285 outstanding ordinary shares will be combined into and automatically become 1 post-Reverse Stock Split ordinary share. No fractional shares will be issued in connection with the reverse stock split. Instead, the Company will aggregate the fractional entitlements of shareholders who otherwise would be entitled to receive fractional shares because they hold a number of ordinary shares not evenly divisible by 2.285 ordinary shares pursuant to the reverse stock split or they hold less than the number of ordinary shares which should be consolidated into one ordinary share pursuant to the reverse stock split and, to the extent possible, sell such aggregated fractional ordinary shares on the basis of prevailing market prices at such time.

After the Reverse Stock Split, all outstanding Company options, warrants and other applicable convertible securities, including the Company’s warrants listed on the Nasdaq Capital Market under the symbol SMXWW which will retain its existing CUSIP number, will be proportionately adjusted in accordance with their respective terms.

In connection with the Reverse Stock Split, the Company amended the Public Limited Company Constitution of SMX (Security Matters) Public Limited Company Memorandum of Association (“Amended Constitution”) to reflect the adjustment of the par value. Attached to this report on Form 6-K (this “Report”) as Exhibit 1.1 is a copy of such Amended Constitution.

Attached to this Report as Exhibit 99.1 is a copy of the press release dated May 27, 2026 titled “SMX Announces Effective Date of Reverse Stock Split.”

The information included in this Report of Foreign Private Issuer on Form 6-K is hereby incorporated by reference into the registration statements on Form F-3 (File Numbers 333-294122 and 333-293520) and Form S-8 (File Numbers 333-288722, 333290452 and 333-294122) of the Company (including any prospectuses forming a part of such registration statements), and shall be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

Exhibit Number		Description
1.1		Public Limited Company Constitution of SMX (Security Matters) Public Limited Company Memorandum of Association
99.1		Press release dated May 27, 2026

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 thereunto duly authorized.

Date: May 1527, 2026

	SMX (SECURITY MATTERS) PUBLIC LIMITED COMPANY

	By:	/s/ Haggai Alon
	Name:	Haggai Alon
	Title:	Chief Executive Officer

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