Insider Transactions Reported by 9 Insiders of GigCapital8 Corp.

Symbol: GIW, GIWWR, GIWWU on Nasdaq
Location: Palo Alto, CA

Quick Takeaways

GIW - GigCapital8 Corp. has 9 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are available for direct filing-level review.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

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.

Official SEC Source

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

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 12 Apr 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

GigCapital8 Corp. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Valuation	Report Date
Bryan Timm	Director	$101,000	Mixed	07 Oct 2025
Dr. Avi S. Katz	Chief Executive Officer, Director, 10%+ Owner		Mixed	03 Oct 2025
Christine M. Marshall	Chief Financial Officer		Mixed	03 Oct 2025
Adrian Zuckerman	Director		Mixed	07 Oct 2025
Rear Admiral Omri Dagul	Director		Mixed	07 Oct 2025
James S. Greene	Director		Mixed	07 Oct 2025
Raanan I. Horowitz	Director		Mixed	07 Oct 2025
Luis Machuca	Director		Mixed	07 Oct 2025
David Ben-Bashat	Director		Mixed	07 Oct 2025

Top shareholders of GigCapital8 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
GLAZER CAPITAL, LLC	13F 13D/G	Company	8.5% from 13D/G	3,672,029 mixed-class rows	$21,978,000	—	31 Dec 2025	13F 13D/G
AQR Arbitrage LLC	13F	Company	— mixed-class rows	3,389,538 mixed-class rows	$17,286,643	—	31 Dec 2025	13F
AQR CAPITAL MANAGEMENT LLC	13D/G	—	6.6%	1,694,769	$16,829,056	$0	31 Dec 2025	13D/G
TENOR CAPITAL MANAGEMENT Co., L.P.	13F 13D/G	Company · Tenor Capital Management Company, L.P.	6.7% from 13D/G	3,000,000 mixed-class rows	$15,300,000	—	31 Dec 2025	13F 13D/G
Lynrock Lake LP	13D/G 13F	Company	5.4%	1,466,665	$14,563,983	$0	31 Dec 2025	13D/G 13F
BERKLEY W R CORP	13F 13D/G	Company · W. R. Berkley Corporation	5% from 13D/G	1,884,610 mixed-class rows	$12,937,351	—	31 Dec 2025	13F 13D/G
Westchester Capital Management, LLC	13F	Company	4%	1,080,000	$10,681,200	—	31 Dec 2025	13F
Yakira Capital Management, Inc.	13F	Company	— mixed-class rows	1,896,000 mixed-class rows	$9,669,599	—	31 Dec 2025	13F
ARISTEIA CAPITAL, L.L.C.	13F	Company	— mixed-class rows	1,700,000 mixed-class rows	$8,670,000	—	31 Dec 2025	13F
Polar Asset Management Partners Inc.	13F	Company	— mixed-class rows	1,700,000 mixed-class rows	$8,670,000	—	31 Dec 2025	13F
WHITEBOX ADVISORS LLC	13F	Company	— mixed-class rows	1,600,000 mixed-class rows	$8,160,000	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	2.8%	759,000	$7,506,510	—	31 Dec 2025	13F
Magnetar Financial LLC	13F	Company	3.1%	695,261	$7,119,473	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	— mixed-class rows	904,234 mixed-class rows	$6,969,902	—	31 Dec 2025	13F
TORONTO DOMINION BANK	13F	Company	— mixed-class rows	1,019,910 mixed-class rows	$6,920,422	—	31 Dec 2025	13F
Radcliffe Capital Management, L.P.	13F	Company	— mixed-class rows	1,200,000 mixed-class rows	$6,613,250	—	31 Dec 2025	13F
RIVERNORTH CAPITAL MANAGEMENT, LLC	13F	Company	2.7%	599,512	$6,103,032	—	31 Dec 2025	13F
MIZUHO SECURITIES USA LLC	13F	Company	2%	550,000	$5,438,664	—	31 Dec 2025	13F
Logan Stone Capital, LLC	13F	Company	1.9%	512,612	$5,072,296	—	31 Dec 2025	13F
Mercuria Capital Strategies, LLC	13F	Company	— mixed-class rows	562,500 mixed-class rows	$5,000,625	—	31 Dec 2025	13F
BNP PARIBAS FINANCIAL MARKETS	13F	Company	— mixed-class rows	966,462 mixed-class rows	$4,928,957	—	31 Dec 2025	13F
Clear Street Group Inc.	13F	Company	— mixed-class rows	691,048 mixed-class rows	$4,461,974	—	31 Dec 2025	13F
PICTON MAHONEY ASSET MANAGEMENT	13F	Company	— mixed-class rows	850,000 mixed-class rows	$4,337,125	—	31 Dec 2025	13F
Alpine Global Management, LLC	13F	Company	— mixed-class rows	800,000 mixed-class rows	$4,080,000	—	31 Dec 2025	13F
Mint Tower Capital Management B.V.	13F	Company	— mixed-class rows	800,000 mixed-class rows	$4,080,000	—	31 Dec 2025	13F
WOLVERINE ASSET MANAGEMENT LLC	13F	Company	— mixed-class rows	773,216 mixed-class rows	$3,943,737	—	31 Dec 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	1.5%	398,750	$3,943,638	—	31 Dec 2025	13F
PERISCOPE CAPITAL INC.	13F	Company	— mixed-class rows	658,900 mixed-class rows	$3,644,316	—	31 Dec 2025	13F
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	13F	Company	— mixed-class rows	599,252 mixed-class rows	$3,061,268	—	31 Dec 2025	13F
GABELLI & Co INVESTMENT ADVISERS, INC.	13F	Company	1.3%	299,871	$3,052,687	—	31 Dec 2025	13F
Verition Fund Management LLC	13F	Company	— mixed-class rows	375,000 mixed-class rows	$2,928,500	—	31 Dec 2025	13F
Schonfeld Strategic Advisors LLC	13F	Company	— mixed-class rows	284,559 mixed-class rows	$2,900,084	—	31 Dec 2025	13F
Crossingbridge Advisors, LLC	13F	Company	1.2%	274,996	$2,800,959	—	31 Dec 2025	13F
GABELLI FUNDS LLC	13F	Company	1.1%	255,300	$2,598,954	—	31 Dec 2025	13F
LINDEN ADVISORS LP	13F	Company	— mixed-class rows	625,000 mixed-class rows	$2,597,500	—	31 Dec 2025	13F
METEORA CAPITAL, LLC	13F	Company	— mixed-class rows	642,499 mixed-class rows	$2,594,175	—	31 Dec 2025	13F
HGC Investment Management Inc.	13F	Company	1.1%	250,000	$2,545,000	—	31 Dec 2025	13F
Bulldog Investors, LLP	13F	Company	— mixed-class rows	318,526 mixed-class rows	$1,624,483	—	31 Dec 2025	13F
StoneX Group Inc.	13F	Company	0.6%	161,800	$1,600,202	—	31 Dec 2025	13F
HEIGHTS CAPITAL MANAGEMENT, INC	13F	Company	0.63%	141,683	$1,442,333	—	31 Dec 2025	13F
DLD Asset Management, LP	13F	Company	— mixed-class rows	233,333 mixed-class rows	$1,349,663	—	31 Dec 2025	13F
Harraden Circle Investments, LLC	13F	Company	— class O/S missing	4,216,800	$1,307,208	—	31 Dec 2025	13F
Wealthspring Capital LLC	13F	Company	0.45%	100,000	$1,018,000	—	31 Dec 2025	13F
Karpus Management, Inc.	13F	Company	0.33%	89,950	$889,606	—	31 Dec 2025	13F
Quarry LP	13F	Company	— mixed-class rows	79,782 mixed-class rows	$815,318	—	31 Dec 2025	13F
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	— mixed-class rows	275,337 mixed-class rows	$807,083	—	31 Dec 2025	13F
Virtu Financial LLC	13F	Company	0.24%	65,840	$651,000	—	31 Dec 2025	13F
HRT FINANCIAL LP	13F	Company	— mixed-class rows	71,617 mixed-class rows	$545,000	—	31 Dec 2025	13F
GRITSTONE ASSET MANAGEMENT LLC	13F	Company	— mixed-class rows	100,000 mixed-class rows	$510,000	—	31 Dec 2025	13F
Stoic Point Capital Management LLC	13F	Company	— mixed-class rows	89,583 mixed-class rows	$509,792	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for GigCapital8 Corp.

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

Insider	Symbol	Class	Shares Owned	Date	Ownership
Bryan Timm	GIW	Class A ordinary shares	10,000	07 Oct 2025	Direct
Luis Machuca	GIW	Class A ordinary shares	10,000	07 Oct 2025	Direct
Raanan I. Horowitz	GIW	Class A ordinary shares	5,200	07 Oct 2025	Direct
James S. Greene	GIW	Class A ordinary shares	10,000	07 Oct 2025	Direct
Avi S. Katz	GIW	Class A ordinary shares	10,000	03 Oct 2025	By GigAcquisitions8 Corp.

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