Diodes Inc. Insider Trading

DIOD

Last 12 months

Insiders sold $16.8M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. Director Keh Shew Lu sold $7.52M on Feb 20, 17% of their stake, outside a plan. The last open-market buy by an executive or director was in Apr 2022.

Net open-market

−$16.8M

0 buys · 24 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 8

executives and directors

Last open-market buy

Apr 2022

Apr 14, 2022

Get an email when DIOD's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
May 29	Richard Dallas White Corporate Secretary	SoldNo plan 2 parts	3,000	$106.17 average	319K	6.6%	Form 4
May 29	Francis Tang Chief Technology Officer	SoldNo plan	15,330	$112.04	$1.72M	18%	Form 4
May 27	Gary Yu President and CEO	SoldNo plan	3,632	$110.08	400K	3.2%	Form 4
May 26 – 27	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan 2 parts	5,000	$109.06 average	545K	7.2%	Form 4
May 26 – 27	Francis Tang Chief Technology Officer	SoldNo plan 2 parts	9,137	$109.14 average	997K	9.5%	Form 4
May 26	Andy Tsong SVP Worldwide Products Group	SoldNo plan	1,582	$106.96	169K	3.2%	Form 4
May 26	Jin Zhao President, Diodes Asia	SoldNo plan	3,689	$106.86	394K	7.8%	Form 4
May 20	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	2,000	$96.81	194K	2.8%	Form 4
May 15	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	2,000	$101.47	203K	2.7%	Form 4
May 13	Brett R Whitmire CFO	SoldNo plan	16,556	$103.34	$1.71M	17%	Form 4
May 12	Andy Tsong SVP Worldwide Products Group	SoldNo plan	2,652	$110.00	292K	3.1%	Form 4
May 12	Jin Zhao President, Diodes Asia	SoldNo plan	2,760	$102.36	283K	3.4%	Form 4
May 12	Francis Tang Chief Technology Officer	SoldNo plan	3,643	$108.00	393K	2.9%	Form 4
Feb 24	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	2,154	$69.89	151K	2.0%	Form 4
Feb 24	Gary Yu President and CEO	SoldNo plan	2,000	$70.00	140K	1.1%	Form 4
Feb 20	Keh Shew Lu Director	SoldNo plan 2 parts	111,000	$67.76 average	$7.52M	17%	Form 4
Feb 13	Brett R Whitmire CFO	SoldNo plan	5,953	$71.22	424K	5.8%	Form 4
Feb 13	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	1,000	$71.89	72K	0.9%	Form 4
Feb 13	Andy Tsong SVP Worldwide Products Group	SoldNo plan	3,277	$70.46	231K	3.7%	Form 4
Feb 3	Gary Yu President and CEO	SoldNo plan	2,900	$60.85	176K	1.4%	Form 4
Feb 3	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	950	$60.85	58K	0.8%	Form 4
Feb 3	Brett R Whitmire CFO	SoldNo plan	830	$60.85	51K	0.7%	Form 4
Feb 2	Jin Zhao President, Diodes Asia	SoldNo plan	525	$59.19	31K	0.6%	Form 4
Nov 12, 2025	Keh Shew Lu Director	SoldNo plan 2 parts	6,000	$47.42 average	285K	0.8%	Form 4
Aug 28, 2025	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	1,000	$56.36	56K	1.2%	Form 4
Aug 27, 2025	Brett R Whitmire CFO	SoldNo plan	2,000	$55.90	112K	2.7%	Form 4
Aug 19, 2025	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	1,000	$53.22	53K	1.2%	Form 4
Feb 4, 2025	Emily Yang SVP Worldwide Sales/Marketing	SoldNo plan	950	$56.04	53K	1.0%	Form 4
Feb 4, 2025	Gary Yu President	SoldNo plan	2,900	$56.04	163K	2.0%	Form 4
Feb 4, 2025	Brett R Whitmire CFO	SoldNo plan	830	$56.04	47K	1.0%	Form 4

May 29No plan
Richard Dallas White
Corporate Secretary · sold 3,000 at avg $106.17
319K
6.6% of stake
May 29No plan
Francis Tang
Chief Technology Officer · sold 15,330 at $112.04
$1.72M
18% of stake
May 27No plan
Gary Yu
President and CEO · sold 3,632 at $110.08
400K
3.2% of stake
May 26 – 27No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 5,000 at avg $109.06
545K
7.2% of stake
May 26 – 27No plan
Francis Tang
Chief Technology Officer · sold 9,137 at avg $109.14
997K
9.5% of stake
May 26No plan
Andy Tsong
SVP Worldwide Products Group · sold 1,582 at $106.96
169K
3.2% of stake
May 26No plan
Jin Zhao
President, Diodes Asia · sold 3,689 at $106.86
394K
7.8% of stake
May 20No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 2,000 at $96.81
194K
2.8% of stake
May 15No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 2,000 at $101.47
203K
2.7% of stake
May 13No plan
Brett R Whitmire
CFO · sold 16,556 at $103.34
$1.71M
17% of stake
May 12No plan
Andy Tsong
SVP Worldwide Products Group · sold 2,652 at $110.00
292K
3.1% of stake
May 12No plan
Jin Zhao
President, Diodes Asia · sold 2,760 at $102.36
283K
3.4% of stake
May 12No plan
Francis Tang
Chief Technology Officer · sold 3,643 at $108.00
393K
2.9% of stake
Feb 24No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 2,154 at $69.89
151K
2.0% of stake
Feb 24No plan
Gary Yu
President and CEO · sold 2,000 at $70.00
140K
1.1% of stake
Feb 20No plan
Keh Shew Lu
Director · sold 111,000 at avg $67.76
$7.52M
17% of stake
Feb 13No plan
Brett R Whitmire
CFO · sold 5,953 at $71.22
424K
5.8% of stake
Feb 13No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 1,000 at $71.89
72K
0.9% of stake
Feb 13No plan
Andy Tsong
SVP Worldwide Products Group · sold 3,277 at $70.46
231K
3.7% of stake
Feb 3No plan
Gary Yu
President and CEO · sold 2,900 at $60.85
176K
1.4% of stake
Feb 3No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 950 at $60.85
58K
0.8% of stake
Feb 3No plan
Brett R Whitmire
CFO · sold 830 at $60.85
51K
0.7% of stake
Feb 2No plan
Jin Zhao
President, Diodes Asia · sold 525 at $59.19
31K
0.6% of stake
Nov 12, 2025No plan
Keh Shew Lu
Director · sold 6,000 at avg $47.42
285K
0.8% of stake
Aug 28, 2025No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 1,000 at $56.36
56K
1.2% of stake
Aug 27, 2025No plan
Brett R Whitmire
CFO · sold 2,000 at $55.90
112K
2.7% of stake
Aug 19, 2025No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 1,000 at $53.22
53K
1.2% of stake
Feb 4, 2025No plan
Emily Yang
SVP Worldwide Sales/Marketing · sold 950 at $56.04
53K
1.0% of stake
Feb 4, 2025No plan
Gary Yu
President · sold 2,900 at $56.04
163K
2.0% of stake
Feb 4, 2025No plan
Brett R Whitmire
CFO · sold 830 at $56.04
47K
1.0% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch DIOD, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

Peers

Semiconductors & Related Devices · Pick stocks to compare with DIOD

CompareIntrinsic value

CRDOCredo Technology Group Holding Ltd.

$136.50-9.55%75

VIAVViavi Solutions Inc.

$29.24-2.70%51

PENGPenguin Solutions, Inc.

$48.35-9.10%41

OSISOsi Systems Inc.

$202.92+0.98%75

TSEMTower Semiconductor Ltd.

$145.87-10.54%17

ENPHEnphase Energy, Inc.

$31.55+3.71%30

SEDGSolarEdge Technologies Inc.

$30.02-8.70%31

CRUSCirrus Logic, Inc.

$115.99+3.27%81

Held by ETFs

DIOD is in 101 US ETFs. The largest of them, with DIOD's weight in each:

Spot a number that looks wrong? Check it in DIOD's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

2 of 2 free stocks used today

Keep analysing DIOD

Create a free account and get 14 days of Premium: every stock and every tool.

Unlimited stocksQuality, fair value and dividends for 10,000+ stocks
Stock screenerFilter on quality, valuation and dividend safety
Portfolio trackerReal return, dividend calendar and portfolio quality
Editable DCFChange the assumptions and watch fair value move
Compare side by sideUp to 10 stocks in one table
Unlimited alertsPrice, P/E, Quality Score and yield

No card. Moves to Free after, unless you upgrade.

Already have an account?

Or come back tomorrow. Stocks on your watchlist are always free to view.