Comparable stake leader
Simplot Taiwan Inc.
SEC ownership of SemiLEDs Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001333822.
Disclosed value leader
Trung T. Doan
Comparable rows
15/18
Latest evidence
31 Mar 2026
- Public ticker
- LEDS on Nasdaq
- Parsed ownership sources
-
3/4/5, 13D/G, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Simplot Taiwan Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
15 of 18
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Simplot Taiwan Inc.
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
- 0001333822
- Issuer location
- Chu Nan, Taiwan
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of SemiLEDs 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
Simplot Taiwan Inc.
Disclosed value leader
Trung T. Doan
Comparable rows
15/18
Latest evidence
31 Mar 2026
3/4/5
13D/G
13F
Lead comparable stake: 58%
3 rows are not safely comparable across share classes.
13D/G row: Simplot Taiwan Inc.
Showing 1-8 of 18 holder rows.
Quick read
Simplot Taiwan Inc. leads the comparable SEC ownership view at 58%.
15 of 18 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 Simplot Taiwan Inc.'s linked filing trail.
Comparable ownership
Top 5
Simplot Taiwan Inc.
58%
Trung T. Doan
58%
Edward Kuan Hsiung Hsieh
0.66%
Walter Michael Gough
0.5%
Hsin-Liang Christopher Lee
0.41%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 18 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Simplot Taiwan Inc. |
3/4/5
13D/G
10%+ Owner
|
58%
from 13D/G
|
$5,259,195
3,168,190 shares
|
— | 28 Feb 2025 |
| Trung T. Doan |
13D/G
3/4/5
Chairman and CEO, Director, 10%+ Owner
|
58%
|
$10,564,261
4,716,188 shares
|
$0 | 28 Feb 2025 |
| Edward Kuan Hsiung Hsieh |
3/4/5
Director
|
0.66%
|
$137,141
53,571 shares
|
— | 27 Nov 2025 |
| Walter Michael Gough |
3/4/5
Director
|
0.5%
|
$105,134
41,068 shares
|
— | 27 Nov 2025 |
| Hsin-Liang Christopher Lee |
3/4/5
Chief Financial Officer
|
0.41%
|
$99,034
33,800 shares
|
— | 10 Jul 2025 |
| Chris Chang Yu |
3/4/5
Director
|
0.12%
|
$25,600
10,000 shares
|
— | 27 Nov 2025 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
0.75%
|
$77,125
61,700 shares
|
— | 31 Mar 2026 |
| CITADEL ADVISORS LLC |
13F
Company
|
0.27%
|
$27,461
21,969 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 22 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-9 of 9 reporting-owner rows connected to SemiLEDs Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
9
Largest Forms 3/4/5 holder
Scott R. Simplot
Net 12M change
$0
Latest report
27 Nov 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Scott R. Simplot | Director, 10%+ Owner | $5,310,715 | Mixed | 28 Feb 2025 | ||
| J.R. Simplot Co | 10%+ Owner | $5,259,195 | Mixed | 28 Feb 2025 | ||
| Simplot Taiwan Inc. | 10%+ Owner | $5,259,195 | Mixed | 28 Feb 2025 | ||
| Trung T. Doan | Chairman and CEO, Director, 10%+ Owner | $2,518,157 | Mixed | 28 Feb 2025 | ||
| Edward Kuan Hsiung Hsieh | Director | $137,141 | Mixed | 27 Nov 2025 | ||
| Walter Michael Gough | Director | $105,134 | Mixed | 27 Nov 2025 | ||
| Hsin-Liang Christopher Lee | Chief Financial Officer | $99,034 | Mixed | 10 Jul 2025 | ||
| Chris Chang Yu | Director | $25,600 | Mixed | 27 Nov 2025 | ||
| Roger Lee | Director | $22,925 | Mixed | 07 Nov 2022 |
Recent insider transactions for SemiLEDs 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Chris Chang Yu | LEDS | Common Stock | Award | 100% | 5,000 | 10,000 | 27 Nov 2025 | Direct | ||
| Walter Michael Gough | LEDS | Common Stock | Award | 13.9% | 5,000 | 41,068 | 27 Nov 2025 | Direct | ||
| Edward Kuan Hsiung Hsieh | LEDS | Common Stock | Award | 10.3% | 5,000 | 53,571 | 27 Nov 2025 | Direct | ||
| Hsin-Liang Christopher Lee | LEDS | Common Stock | Award | 31% | 8,000 | 33,800 | 10 Jul 2025 | Direct |
* marks a reported price that did not pass the local price check.