UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 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): June 216, 2026

Astrotech Corporation

(Exact Name of Registrant as Specified in Charter)

Delaware	001-34426	91-1273737
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

1817 W. Braker Lane, Suite 400, Austin, Texas		78758
(Address of Principal Executive Offices)		(Zip Code)

(512) 485-9530

Registrant’s Telephone Number, Including Area Code

(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):

☐	Written communication 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 communication pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communication 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(s)		Name of each exchange on which registered
Common Stock, $0.001 par value per share		ASTC		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 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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 18.01. ~~Entry~~ Other ~~into a Material Definitive Agreement~~Events.

On June 216, 2026, Astrotech Corporation (the “Company”), ~~entered~~issued ~~into~~a anpress ~~at-the-market~~release ~~offering~~announcing ~~agreement~~that (the ~~“Offering~~board ~~Agreement”)~~of ~~with~~directors ~~H.C.~~of ~~Wainwright &~~the ~~Co.,~~Company ~~LLC,~~has asapproved ~~agent~~management ~~(“Wainwright”),~~to ~~pursuant~~engage toin ~~which~~a ~~the~~sale ~~Company~~process ~~may~~for ~~offer~~the ~~and~~potential ~~sell,~~sale ~~from~~of ~~time~~1st toDetect ~~time~~Corporation ~~through~~(“1st ~~Wainwright~~Detect”). ~~shares~~A copy of the ~~Company’s~~press ~~common~~release ~~stock,~~is ~~par~~attached ~~value~~as $0Exhibits 99.~~001~~1 ~~per~~to ~~share~~this ~~(the~~Current ~~“Common~~Report ~~Stock”),~~on ~~having~~Form an8-K ~~aggregate~~and ~~offering~~is ~~price~~incorporated ofherein upby ~~to $24,492,819 (the “Shares”)~~reference.

The offer and sale of the Shares will be made pursuant to a shelf registration statement on Form S-3 and the related prospectus (File No. 333-293023) filed by the Company with the Securities and Exchange Commission (the “SEC”) on January 28, 2026 and declared effective by the SEC on January 30, 2026, as supplemented by a prospectus supplement dated June 2, 2026 and filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”).

Pursuant to the Offering Agreement, Wainwright may sell the Shares by any method permitted by law deemed to be an “at the market offering” as defined in Rule 415 of the Securities Act, including sales made by means of ordinary brokers’ transactions, including on The Nasdaq Capital Market, at market prices or as otherwise agreed with Wainwright. Wainwright will use commercially reasonable efforts consistent with its normal trading and sales practices to sell the Shares from time to time, based upon instructions from the Company, including any price or size limits or other customary parameters or conditions the Company may impose.

The Company is not obligated to make any sales of the Shares under the Offering Agreement. The offering pursuant to the Offering Agreement will terminate upon the earlier of (i) the issuance and sale of all shares of our common stock subject to the sales agreement, or (ii) the termination of the sales agreement as permitted therein.

The Company will pay Wainwright a commission rate equal to 3.0% of the aggregate gross proceeds from each sale of Shares and has agreed to provide Wainwright with customary indemnification and contribution rights. The Company will also reimburse Wainwright for certain specified expenses in connection with entering into the Offering Agreement. The Offering Agreement contains customary representations and warranties and conditions to the sale of the Shares pursuant thereto.

The foregoing description of the Offering Agreement is not complete and is qualified in its entirety by reference to the full text of such agreement, a copy of which is filed herewith as Exhibit 1.1 to this Current Report on Form 8-K and is incorporated herein by reference.

This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of an offer to buy the Common Stock discussed herein, nor shall there be any offer, solicitation, or sale of common stock in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

Cautionary Statement Regarding Forward-Looking Statements

This Current Report on Form 8-K includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but not are not limited to, statements regarding the ~~ability~~potential tosale ~~sell~~of ~~shares~~1st ~~and raise additional funds pursuant to the Offering Agreement~~Detect. Such statements involve risks and uncertainties that could cause the Company’s actual results and financial position to differ materially. These risks and uncertainties include uncertainties associated with market conditions and the ~~satisfaction~~ability ofto ~~pre-sale~~complete ~~conditions~~the ~~under~~proposed ~~the~~sale ~~Offering~~of ~~Agreement~~1st Detect, and other risks described under the heading “Risk Factors” in the Company’s ~~SEC~~Securities and Exchange Commission Filings on Form 10-K and Form 10-Q. The Company assumes no responsibility to update or revise any forward-looking statements to reflect events, trends or circumstances after the date hereof.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.	Description
1.1	At the Market Offering Agreement, dated June 2, 2026, by and between Astrotech Corporation and H.C. Wainwright & Co., LLC
99.1	Press Release, dated June 16, 2026, issued by Astrotech Corporation.
5.1	Opinion of Haynes and Boone, LLP
23.1	Consent of Haynes and Boone, LLP (included in Exhibit 5.1)
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: June 3, 2026	Astrotech Corporation
Date: June 16, 2026	Astrotech Corporation
	By:	/s/ Thomas B. Pickens III
		Name: Thomas B. Pickens III
		Chief Executive Officer, Chief Technology Officer and Chairman of the Board (Principal Executive Officer and Principal Financial Officer)

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