Insider activity at Diodes Inc has been all selling for a year now: about $16.8 million from eight sellers, and zero buyers at market prices.
Keep in mind most insider selling is routine — stock-based pay has to be converted to cash at some point.
Zooming out by quarter: No open-market insider buying or selling in the last full quarter. Insiders bought in 0 of the last 7 full quarters. Big money check: 396 institutions held DIOD as of Q2 2026, and more funds bought than sold.
| Filed | Insider | Role | Type | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|
| Jun 1, 2026 | Tang Francis | Executive Officer | Sell | 15,330 | $112.04 | $1.7M | SEC |
| Jun 1, 2026 | White Richard Dallas | Officer | Sell | 2,000 | $107.01 | $214K | SEC |
| Jun 1, 2026 | White Richard Dallas | Officer | Sell | 1,000 | $104.48 | $104K | SEC |
| May 27, 2026 | Zhao Jin | President | Sell | 3,689 | $106.86 | $394K | SEC |
| May 27, 2026 | Tsong Andy | Executive Officer | Sell | 1,582 | $106.96 | $169K | SEC |
| May 27, 2026 | Yang Emily | Executive Officer | Sell | 2,000 | $107.52 | $215K | SEC |
| May 27, 2026 | Yang Emily | Executive Officer | Sell | 3,000 | $110.08 | $330K | SEC |
| May 27, 2026 | Tang Francis | Executive Officer | Sell | 5,000 | $110.08 | $550K | SEC |
| May 27, 2026 | Tang Francis | Executive Officer | Sell | 4,137 | $108.00 | $447K | SEC |
| May 27, 2026 | Yu Gary | CEO | Sell | 3,632 | $110.08 | $400K | SEC |
| May 21, 2026 | Yang Emily | Executive Officer | Sell | 2,000 | $96.81 | $194K | SEC |
| May 19, 2026 | Yang Emily | Executive Officer | Sell | 2,000 | $101.47 | $203K | SEC |
| May 13, 2026 | Zhao Jin | President | Sell | 2,760 | $102.36 | $283K | SEC |
| May 13, 2026 | Tsong Andy | Executive Officer | Sell | 2,652 | $110.00 | $292K | SEC |
| May 13, 2026 | Tang Francis | Executive Officer | Sell | 3,643 | $108.00 | $393K | SEC |
In the last 12 months Diodes Inc insiders made open-market purchases worth about $0 and sales worth about $16.8 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
The most recent open-market insider trade in DIOD was filed on 2026-06-01.
396 investment managers reported holding DIOD in SEC Form 13F filings for Q2 2026.
No congressional trades in DIOD were reported in the past two years. The full list is free on CapitalSnitch.
Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).