Astrotech COO granted 5,000 restricted shares

Astrotech’s COO received 5,000 restricted shares, and this Form 4/A corrects the vesting schedule so they fully vest by August 13, 2028.

Rhea-AI Filing Summary

ASTROTECH Corp (symbol: ASTC) is the issuer of record for a Form 4/A filing submitted to the SEC. Badugu Nihanth reported acquisition or exercise transactions in this Form 4 filing.

Astrotech Corp (ASTC) reported that Chief Operating Officer Badugu Nihanth received a grant of 5,000 shares of restricted Common Stock on July 22, 2026 under the Astrotech Corporation 2021 Omnibus Equity Incentive Plan. This Form 4/A amends the prior filing to state that these shares vest on each of the first three anniversaries of August 13, 2025, becoming 100% vested on August 13, 2028, subject to the executive’s continuous employment.

Insider Trade Summary

Grant/Award: 5,000 shares

Grant/Award 1 txn

Insider Badugu Nihanth

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	5,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,000 shares (Direct)

Footnotes (1)

1. F1. Represents shares of restricted stock granted to the Reporting Person pursuant to the Astrotech Corporation 2021 Omnibus Equity Incentive Plan. The shares of restricted stock vest on each of the first three anniversaries of August 13, 2025, such that 100% of the shares of restricted stock granted shall be fully vested on August 13, 2028, subject to Reporting Person's continuous employment with the Issuer through each such applicable anniversary.

Key Figures

Restricted shares granted: 5,000 shares Grant price per share: $0.0000 per share Shares held after transaction: 5,000 shares +2 more

5 metrics

Restricted shares granted 5,000 shares Common Stock award to COO on July 22, 2026

Grant price per share $0.0000 per share Restricted stock grant to COO on July 22, 2026

Shares held after transaction 5,000 shares Direct ownership of COO following the grant

Vesting completion date August 13, 2028 Date when 100% of the restricted shares are vested

Vesting installments 3 anniversaries Vests on each of the first three anniversaries of August 13, 2025

Key Terms

restricted stock, 2021 Omnibus Equity Incentive Plan, vest, continuous employment

4 terms

restricted stock financial

"Represents shares of restricted stock granted to the Reporting Person"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

2021 Omnibus Equity Incentive Plan financial

"pursuant to the Astrotech Corporation 2021 Omnibus Equity Incentive Plan"

vest financial

"The shares of restricted stock vest on each of the first three anniversaries"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

continuous employment financial

"subject to Reporting Person's continuous employment with the Issuer"

FAQ

What insider transaction did ASTC report for its COO in this Form 4/A?

Astrotech Corp reported that its Chief Operating Officer, Badugu Nihanth, was granted 5,000 shares of restricted Common Stock on July 22, 2026 under the company’s 2021 Omnibus Equity Incentive Plan, with no cash price per share shown for the award.

Why was this Astrotech Corp (ASTC) Form 4/A filed as an amendment?

The amendment corrects the vesting schedule previously reported. The original Form 4 stated vesting from August 13, 2026; this Form 4/A restates that the shares vest on the first three anniversaries of August 13, 2025, fully vesting on August 13, 2028.

How many ASTC restricted shares were granted to the COO and at what price?

The Chief Operating Officer, Badugu Nihanth, was granted 5,000 restricted shares of Astrotech Corp Common Stock. The filing shows a $0.0000 price per share, reflecting that this is a compensatory equity grant rather than an open-market purchase.

What is the vesting schedule for the COO’s 5,000 restricted ASTC shares?

The 5,000 restricted shares vest on each of the first three anniversaries of August 13, 2025, so that 100% of the award will be vested on August 13, 2028. Vesting is subject to the COO’s continuous employment with Astrotech Corp through each vesting date.

How many ASTC shares does the COO hold after this restricted stock grant?

After the July 22, 2026 grant, the reporting person holds 5,000 shares of Astrotech Corp Common Stock directly, as shown in the post-transaction ownership field of the Form 4/A.

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Available on EDGAR 09/08/2026 - 09:12 PM Accepted by SEC EDGAR 09/08/2026 - 09:11 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Badugu Nihanth

(Last) (First) (Middle)

1817 W. BRAKER LN, STE 400

(Street)

AUSTIN TEXAS 78758

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ASTROTECH Corp [ ASTC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/22/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)
07/22/2026

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/22/2026		A		5,000(1)	A	$0	5,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares of restricted stock granted to the Reporting Person pursuant to the Astrotech Corporation 2021 Omnibus Equity Incentive Plan. The shares of restricted stock vest on each of the first three anniversaries of August 13, 2025, such that 100% of the shares of restricted stock granted shall be fully vested on August 13, 2028, subject to Reporting Person's continuous employment with the Issuer through each such applicable anniversary.

Remarks:

The original Form 4, filed on July 22, 2026, is being amended to restate the vesting anniversary date in Note (1) as the original Form 4 erroneously indicated that the shares of restricted stock would vest in equal installments on each of the first three anniversaries of August 13, 2026, when, as reported in this amendment the shares of restricted stock vest on each of the first three anniversaries August 13, 2025, such that 100% of the shares of restricted stock granted shall be fully vested on August 13, 2028.

	/s/ Nihanth Badugu	09/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)