Brett R. Whitmire
CFO · DIODES INC /DEL/
- 2025
- May 13, 2026
- 4
Summary
Latest filing:
Brett R. Whitmire is CFO of DIODES INC /DEL/ (DIOD). 4 SEC Form 4 filings on record going back to 2025, most recently on 13 May 2026. Most recent open-market trade: sold $1.71M of DIOD on 13 May 2026. Lifetime open-market sales: $2.30M.
Recent transactions
7The latest 7 SEC Form 4 transactions reported by Brett R. Whitmire.
Trading pattern
InsiderAlpha's records for Brett R. Whitmire go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Brett R. Whitmire files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Keh Shew Lu - $7.81M in DIOD purchases and sales in the last 12 months
- Francis Tang - $3.11M in DIOD purchases and sales in the last 12 months
- Emily Yang - $1.22M in DIOD purchases and sales in the last 12 months
- Gary Yu - $716K in DIOD purchases and sales in the last 12 months
- Jin Zhao - $708K in DIOD purchases and sales in the last 12 months
- Andy Tsong - $692K in DIOD purchases and sales in the last 12 months
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Frequently asked questions
Who is Brett R. Whitmire?
Brett R. Whitmire is a corporate insider, tracked as CFO of DIODES INC /DEL/ (DIOD). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Brett R. Whitmire last file a Form 4?
The most recent primary Form 4 on record is dated 13 May 2026, one of 4 filings going back to 2025.
Has Brett R. Whitmire been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($2.30M) across all tracked filings.