Insider Transactions Reported by 15 Insiders of ASTROTECH Corp

Symbol: ASTC on Nasdaq
Location: Austin, TX

Quick Takeaways

ASTC - ASTROTECH Corp has 15 insiders with reported activity on this page.
Net insider value flow over the last year: -$1,625,071.
Recent transaction rows are available for direct filing-level review.

What Changed

Buy value: ; sell value: $1,625,071.
Net share flow: -229,576.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to selling over the last 12 months. Net value: -$1,625,071.

Buys

Shares: 0

Insiders: 0

Sells

$1,625,071

Shares: 229,576

Insiders: 1

Net

-$1,625,071

Shares: -229,576

Insiders: -1

Window (months)	Sell shares	Buy $	Sell $	Net $
0-3	0	$0	$0	$0
3-6	0	$0	$0	$0
6-9	229,576	$0	$1,625,071	-$1,625,071
9-12	0	$0	$0	$0

ASTROTECH Corp executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Ronald W. Cantwell	Director	$1,520,582			Mixed	14 Apr 2022
Thomas Boone Pickens III	CEO, Director	$1,175,374			Mixed	14 May 2025
James Frank Becker	Director	$158,308			Filing P/S	28 May 2024
Thomas Wiley Wilkinson	Director	$154,625			Mixed	14 May 2025
Daniel T. Russler Jr.	Director	$125,492			Filing P/S	15 Mar 2024
Robert N. McFarland	Director	$90,072			Mixed	14 May 2025
Eric Stober	Director	$66,944			Mixed	14 May 2025
Jaime Hinojosa	Cfo	$58,222			Mixed	28 Aug 2024
Jennifer Canas	Chief Financial Officer	$34,020			Mixed	22 May 2025
Charles Arch Winn	Director	$25,200			Mixed	14 May 2025
John William Halinski	Director	$19,440			Mixed	14 May 2025
Ryan L. Polk	Chief Financial Officer	$0			Mixed	14 Jan 2025
Braden M. Leonard	10%+ Owner	$0	-$1,625,071	-100%	Mixed	03 Oct 2025
Scott Bartley	Interim CFO, Treasurer and Sec	$0			Mixed	27 Oct 2025
Nihanth Badugu	Chief Operating Officer				Mixed	13 Aug 2025

Top shareholders of ASTROTECH Corp (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Ronald W. Cantwell	3/4/5	Director	— class O/S missing	182,324	$1,520,582	—	14 Apr 2022	3/4/5
Thomas Boone Pickens III	3/4/5	CEO, Director	— mixed-class rows	283,654 mixed-class rows	$1,175,374	—	14 May 2025	3/4/5
Skylark Partners I, LP	13D/G	—	5.4%	94,370	$268,954	$0	29 Sep 2025	13D/G
James Frank Becker	3/4/5	Director	— class O/S missing	16,121	$158,308	—	28 May 2024	3/4/5
Thomas Wiley Wilkinson	3/4/5	Director	1.4%	23,862	$154,625	—	14 May 2025	3/4/5
Daniel T. Russler Jr.	3/4/5	Director	— class O/S missing	14,904	$125,492	—	15 Mar 2024	3/4/5
DRW Securities, LLC	13F	Company	1.8%	31,464	$108,865	—	31 Dec 2025	13F
Robert N. McFarland	3/4/5	Director	0.8%	13,900	$90,072	—	14 May 2025	3/4/5
BlackRock, Inc.	13F	Company	1.2%	20,188	$69,850	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.1%	18,780	$67,242	—	31 Dec 2025	13F
Eric Stober	3/4/5	Director	0.59%	10,331	$66,944	—	14 May 2025	3/4/5
Jaime Hinojosa	3/4/5	CFO	— mixed-class rows	37,043 mixed-class rows	$58,222	—	28 Aug 2024	3/4/5
CITADEL ADVISORS LLC	13F	Company	0.86%	15,051	$53,883	—	31 Dec 2025	13F
VANGUARD GROUP INC	13F	Company	0.85%	14,774	$52,891	—	31 Dec 2025	13F
SCS Capital Management LLC	13F	Company	0.67%	11,761	$40,693	—	31 Dec 2025	13F
Jennifer Canas	3/4/5	Chief Financial Officer	— mixed-class rows	10,500 mixed-class rows	$34,020	—	22 May 2025	3/4/5
Charles Arch Winn	3/4/5	Director	0.22%	3,889	$25,200	—	14 May 2025	3/4/5
John William Halinski	3/4/5	Director	0.17%	3,000	$19,440	—	14 May 2025	3/4/5
UBS Group AG	13F	Company	0.05%	903	$3,124	—	31 Dec 2025	13F
Tower Research Capital LLC (TRC)	13F	Company	0.03%	514	$1,778	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	0%	66	$229	—	31 Dec 2025	13F
Federation Des Caisses Desjardins du Quebec	13F	Individual	0%	23	$80	—	31 Dec 2025	13F
WELLS FARGO & COMPANY/MN	13F	Company	0%	20	$69	—	31 Dec 2025	13F
CITIGROUP INC	13F	Company	0%	6	$21	—	31 Dec 2025	13F
SBI Securities Co., Ltd.	13F	Company	0%	3	$10	—	31 Dec 2025	13F
HUNTINGTON NATIONAL BANK	13F	Company	— class O/S missing	1	$1	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for ASTROTECH Corp

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Braden Michael Leonard	ASTC	Common Stock	Sale	-100%	$53,438	$5.83	-9,166	0	03 Oct 2025	Direct
Braden Michael Leonard	ASTC	Common Stock	Sale	-100%	$1,571,634	$7.13	-220,410	0	03 Oct 2025	Holdings of BML Investment Partners, L.P
Jennifer Canas	ASTC	Employee Stock Options (right to buy)	Award				5,250	5,250	22 May 2025	Direct
Robert N. McFarland	ASTC	Common Stock	Award	27.5%			3,000	13,900	14 May 2025	Direct
Eric Stober	ASTC	Common Stock	Award	40.9%			3,000	10,331	14 May 2025	Direct
Thomas Boone Pickens III	ASTC	Common Stock	Award	38.1%			50,000	181,385	14 May 2025	Direct
John William Halinski	ASTC	Common Stock	Award				3,000	3,000	14 May 2025	Direct
Charles Arch Winn	ASTC	Common Stock	Award	337.5%			3,000	3,889	14 May 2025	Direct
Thomas Wiley Wilkinson	ASTC	Common Stock	Award	14.4%			3,000	23,862	14 May 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.