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)

April 7, 2026

400 KATO TERRACE

FREMONT, CA 94539

(Address of principal executive offices, including zip code)

510-623-9400

(Registrant’s telephone number, including area code)

 N/A

(Former name or former address, if changed since last report)

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 (see General Instruction A.2. below):

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. ☐

Securities registered pursuant to Section 12(b) of the Act:

Item 2.02.  Results of Operations and Financial Condition.

On April 7, 2026, Aehr Test Systems, a California corporation (the “Company”), issued a press release announcing the Company’s financial results for its third quarter ended February 27, 2026.  A copy of the press release is furnished herewith as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

The information in this Item 2.02 and Exhibit 99.1 are furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Act of 1934, as amended (the “Exchange Act”), 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 in this Item 2.02 and Exhibit 99.1 shall not be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

On April 2, 2026, the Board of Directors of the Company approved a change in the Company’s fiscal year end from the 52- or 53-week period ending on the Friday nearest May 31 to the 52- or 53-week period ending on the Friday nearest June 30. The change will be effective beginning in fiscal year 2027, which will begin on June 27, 2026 and end on June 25, 2027 (the “New Fiscal Year”). As a result of the change, the Company will have a 28-day transition period beginning on May 30, 2026, and ending on June 26, 2026 (the “Transition Period”). The Company will report the financial results of the Transition Period in its Quarterly Report on Form 10-Q for the first quarter ending September 25, 2026 of the New Fiscal Year. Consistent with guidance from the U.S. Securities and Exchange Commission, no separate transition report is required in connection with the change in the Company’s fiscal year end.

Item 9.01.  Financial Statements and Exhibits.

(d)  Exhibits.

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.