Astrotech director updates stake to 20,961 shares

Amended Form 4 for ASTC corrects director Robert N. McFarland’s post-grant holdings to 20,961 shares after an administrative understatement.

This filing corrects an earlier one, and you can read the original Form 4 if you want to see what changed.

Rhea-AI Filing Summary

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

ASTROTECH Corp (ASTC) director Robert N. McFarland reported an amended Form 4 for a July 9, 2026 grant of 1,055 shares of Common Stock as restricted stock, awarded at $0.00 per share under the Astrotech Corporation 2021 Omnibus Equity Incentive Plan. All of these restricted shares vested immediately on the grant date. The amendment corrects his post-transaction holdings to 20,961 shares beneficially owned, after the original Form 4 understated this total by 9,756 shares due to an administrative error. No Rule 10b5-1 trading plan is reported for this award.

Insider Trade Summary

Grant/Award: 1,055 shares

Grant/Award 1 txn

Insider MCFARLAND ROBERT N

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	1,055	$0.00	$0.00

Holdings After Transaction: Common Stock — 20,961 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. 100% of the shares of restricted stock vested immediately on the grant date.

Key Figures

Restricted stock granted: 1,055 shares Post-transaction beneficial ownership: 20,961 shares Ownership understatement corrected: 9,756 shares +1 more

4 metrics

Restricted stock granted 1,055 shares Common Stock awarded to Robert N. McFarland on July 9, 2026

Post-transaction beneficial ownership 20,961 shares Shares beneficially owned by Robert N. McFarland after the July 9, 2026 grant

Ownership understatement corrected 9,756 shares Amount by which the original Form 4 understated post-transaction holdings

Grant price per share $0.00 per share Reported price for the 1,055 restricted shares granted July 9, 2026

Key Terms

restricted stock, beneficially owned, Omnibus Equity Incentive Plan, administrative error

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.

beneficially owned financial

"to reflect 20,961 shares beneficially owned by the Reporting Person"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Omnibus Equity Incentive Plan financial

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

A single, company-wide plan that lets a business grant different kinds of stock-based pay — such as stock options, shares that vest over time, or other equity awards — to employees, directors and consultants. It matters to investors because it determines how much of the company can be paid out in shares, how quickly those shares enter the market, and how well employees are motivated to grow the business; think of it as a toolbox or menu for paying with ownership stakes that can dilute existing holders and affect company performance.

administrative error other

"understated the ownership total ... due to an administrative error"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What change does the amended Form 4 report for ASTC director Robert N. McFarland?

The amendment reports that Robert N. McFarland beneficially owns 20,961 ASTC shares after the July 9, 2026 transaction, correcting an earlier Form 4 that understated this total by 9,756 shares because of an administrative error.

What type of ASTC shares did Robert N. McFarland receive in this Form 4/A?

Robert N. McFarland received 1,055 shares of ASTC Common Stock as restricted stock granted under the Astrotech Corporation 2021 Omnibus Equity Incentive Plan, with 100% of the shares vesting immediately on the July 9, 2026 grant date.

Was a Rule 10b5-1 trading plan involved in Robert N. McFarland’s ASTC grant?

No. The filing indicates no Rule 10b5-1 plan was associated with this July 9, 2026 grant of 1,055 restricted ASTC shares to director Robert N. McFarland.

What was the reported price for the ASTC restricted stock granted to Robert N. McFarland?

The 1,055 restricted ASTC shares granted to Robert N. McFarland on July 9, 2026 were reported at a price of $0.00 per share, consistent with a compensation-related equity award rather than a market purchase.

Why was the original Form 4 for ASTC amended in this Form 4/A?

The original Form 4 filed July 21, 2026 was amended because it understated McFarland’s ownership total by 9,756 shares in the post-transaction column of Table I, due to an administrative error.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/08/2026 - 09:03 PM Accepted by SEC EDGAR 09/08/2026 - 09:02 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^*

MCFARLAND ROBERT N

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/09/2026

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)
07/21/2026

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	07/09/2026		A		1,055(1)	A	$0	20,961	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. 100% of the shares of restricted stock vested immediately on the grant date.

Remarks:

The original Form 4, filed on July 21, 2026, is being amended to correct the ownership total in Table I, Column 5 to reflect 20,961 shares beneficially owned by the Reporting Person following the reported transaction. The original Form 4 understated the ownership total in Table I, Column 5 by 9,756 shares due to an administrative error.

	/s/ Robert N. McFarland	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)