SEC ownership of FST Corp.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002014254.

Comparable stake leader

Harraden Circle Investments, LLC

Disclosed value leader

Harraden Circle Investments, LLC

Comparable rows

4/4

Latest evidence

31 Mar 2026

Top shareholders Insider holders Latest transactions

Public ticker: KBSX on Nasdaq, FSTWF on OTC
Parsed ownership sources: 13D/G and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder: Harraden Circle Investments, LLC
Ranking: Comparable ownership first, then disclosed value
Comparable ownership rows: 4 of 4
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder: Harraden Circle Investments, LLC
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date: 31 Mar 2026
Freshness: Most recent filing date in this holder set
Issuer CIK: 0002014254
Issuer location: Chiayi County

Ownership snapshot

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

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Harraden Circle Investmen...

Disclosed value leader

Harraden Circle Investmen...

Comparable rows

4/4

Latest evidence

31 Mar 2026

13D/G 13F Lead comparable stake: 3.9% 13D/G row: Harraden Circle Investments, LLC

Quick read

Harraden Circle Investments, LLC leads the comparable SEC ownership view at 3.9%.

4 of 4 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Harraden Circle Investments, LLC's linked filing trail.

Comparable ownership Top 4

Harraden Circle Investments, LLC 3.9%

UBS Group AG 0.36%

GEODE CAPITAL MANAGEMENT, LLC 0.09%

CITADEL ADVISORS LLC 0.03%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-4 of 4 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Harraden Circle Investments, LLC	13D/G 13F Company 13D/G 13F	3.9%	$3,519,997 1,742,573 shares	$0	16 Jan 2025
UBS Group AG	13F Company 13F	0.36%	$212,751 159,963 shares	—	31 Mar 2026
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.09%	$55,104 41,123 shares	—	31 Mar 2026
CITADEL ADVISORS LLC	13F Company 13F	0.03%	$15,658 11,685 shares	—	31 Mar 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 28 Jun 2025.

Buys

Insiders: 0

Sells

Insiders: 0

Net

Shares: 0

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 0 Shares: 0

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

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-1 of 1 reporting-owner rows connected to FST Corp.. Open a relationship link for the CIK-to-CIK filing trail.

Rows

Largest Forms 3/4/5 holder

Houston Jesse Li

Net 12M change

Latest report

16 Apr 2026

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Houston Jesse Li	Director				Mixed	16 Apr 2026

Recent insider transactions for FST Corp.

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

Insider	Symbol	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares owned	Date	Ownership
No insider transactions were found in the last 12 months for this issuer.

^* marks a reported price that did not pass the local price check.