Home / Auditor changes / DIODES INC /DEL/
Filed 2026-03-11 路 Form 8-K 路 Accession 0001193125-26-102267 mid
Price before filing: $63.01 (2026-03-10 close, split/dividend-adjusted)
Market cap at flag: $2.93B (2026-03-11) 路 Latest: $3.80B (2026-10-16)
| Window | DIOD | SPY | vs SPY | |
|---|---|---|---|---|
| 30 days | +31.8% | +0.6% | +31.2% | 2026-04-10 |
| 90 days | +64.3% | +9.1% | +55.1% | 2026-06-09 |
| 180 days | +44.3% | +13.7% | +30.6% | 2026-09-08 |
Return from the last close before the filing date to the first close on/after the window end. Pending windows have not fully elapsed. Past performance says nothing certain about the future.
90 days before the flag: 6 insiders sold $8.9M (11 sales)
30 days after: none reported.
| Date | Insider | Type | Shares | Price | Value | 10b5-1 plan | Source |
|---|---|---|---|---|---|---|---|
| 2026-02-02 | Zhao Jin President, Diodes Asia | Sale | 525 | $59.19 | $31K | no | Form 4 |
| 2026-02-03 | Whitmire Brett R CFO | Sale | 830 | $60.85 | $51K | no | Form 4 |
| 2026-02-03 | Yang Emily SVP Worldwide Sales/Marketing | Sale | 950 | $60.85 | $58K | no | Form 4 |
| 2026-02-03 | Yu Gary President and CEO, Director | Sale | 2,900 | $60.85 | $176K | no | Form 4 |
| 2026-02-13 | Tsong Andy SVP Worldwide Products Group | Sale | 3,277 | $70.46 | $231K | no | Form 4 |
| 2026-02-13 | Whitmire Brett R CFO | Sale | 5,953 | $71.22 | $424K | no | Form 4 |
| 2026-02-13 | Yang Emily SVP Worldwide Sales/Marketing | Sale | 1,000 | $71.89 | $72K | no | Form 4 |
| 2026-02-20 | LU KEH SHEW Director | Sale | 46,734 | $67.78 | $3.2M | no | Form 4 |
| 2026-02-20 | LU KEH SHEW Director | Sale | 64,266 | $67.74 | $4.4M | no | Form 4 |
| 2026-02-24 | Yang Emily SVP Worldwide Sales/Marketing | Sale | 2,154 | $69.89 | $151K | no | Form 4 |
| 2026-02-24 | Yu Gary President and CEO, Director | Sale | 2,000 | $70.00 | $140K | no | Form 4 |
| 2026-03-11: red flag filed | |||||||
Open-market purchases and sales (Form 4 codes P and S) by officers, directors and 10% owners, by transaction date, from 2025-12-11 to 2026-04-10. Excludes option exercises, grants, gifts and tax withholding. Amended filings replace the originals; joint filings count once. Foreign private issuers do not file Form 4. Many insider sales are pre-scheduled (10b5-1 plans) and are not by themselves a sign of wrongdoing.
"4.01 Changes in Registrant's Certifying Accountant (a) Dismissal of Independent Registered Public Accounting Firm On March 5, 2026, the Audit Committee of the Board of Directors of Diodes Incorporated (the "Company") dismissed Baker Tilly US, LLP ("Baker Tilly") as the Company's independent registered public accounting firm, effective immediately."
Quoted from the filing. Source
The company changed its outside auditor (8-K Item 4.01). A dismissal or resignation, especially near an annual report or with reported disagreements, is a warning sign. Changes caused by audit firms merging are usually routine.
Type: dismissed
Disagreements reported: no
Former auditor: Baker Tilly US, LLP · New auditor: PricewaterhouseCoopers LLP
Read the original filing on SEC.gov →
Not investment advice. Automated summary; verify against the filing.
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