As filed with the Securities and Exchange Commission on June 4, 2026

Registration No. 333-233724

Registration No. 333-236030

Registration No 333- 235368

Registration No. 333-267580

Registration No. 333-274604

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

POST-EFFECTIVE AMENDMENTS NO. 1

to 

FORM F-3

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

ALARUM TECHNOLOGIES LTD.

(Exact name of registrant as specified in its charter)

Not Applicable

(Translation of Registrant’s Name into English)

8 Yitzhak Sadeh Street

Tel-Aviv, 6777508 Israel

(Address and telephone number of Registrant’s principal executive offices)

NetNut Networks Inc.

4607 Library Rd Ste 220 #1067

Bethel Park, PA 15102

Tel: 973.506.8810

(Name, address, and telephone number of agent for service)

Copies to:

Approximate date of commencement of proposed sale to the public: Not applicable.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a registration statement pursuant to General Instruction I.C. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☐

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.C. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

Emerging growth company ☐

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, 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 7(a)(2)(B) of the Securities Act. ☐

DEREGISTRATION OF UNSOLD SECURITIES

Alarum Technologies Ltd., a company incorporated under the laws of the State of Israel, or the Registrant, is filing these Post-Effective Amendments, or these Post-Effective Amendments, to the following Registration Statements on Form F-3, or each a Registration Statement and together, the Registration Statements, which have been previously filed by the Registrant with the Securities and Exchange Commission, or the SEC, to deregister any and all securities registered but unsold or otherwise unissued as of the date hereof under the Registration Statements:

The Registrant undertook to cause the Registration Statements to remain effective under the Securities Act of 1933, as amended, or the Securities Act, until the date as required by the registration rights agreement governing each respective Registration Statement, or collectively, the Registration Rights Agreements. As of today, the Registration Rights Agreements have expired and/or derivative securities with respect to such underlying American Depositary Shares, or ADSs, that were issuable upon exercise were registered that were subject thereto have been exercised and/or expired.

In connection with the above, the Registrant has terminated all offerings of its ADSs pursuant to each of the Registration Statements under the Securities Act. In accordance with an undertaking made by the Registrant in each of the Registration Statements to remove from registration, by means of a post-effective amendment, any ADSs which remain unsold at the termination of the offering, the Registrant hereby removes from registration all ADSs registered under the Registration Statements that remain unsold as of the date hereof, if any, and terminates the effectiveness of each of the Registration Statements. The Registration Statements are hereby amended, as appropriate, to reflect the deregistration of all such securities.

SIGNATURES

Pursuant to the requirement of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form F-3 and has duly caused this Post-Effective Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Tel Aviv, State of Israel, on June 4, 2026.

No other person is required to sign this Post-Effective Amendment to the Registration Statement in reliance upon Rule 478 under the Securities Act of 1933, as amended.