undamentalytics Newsletter

Diodes Inc insider trading

Every open-market purchase and sale by Diodes Inc's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
Diodes Inc insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Diodes Inc’s insiders pay?

From February 16, 2010 to June 1, 2026, 25 insiders reported 2 open-market purchases and 284 sales not made under a pre-set plan in Diodes Inc. Twelve months after each purchase was reported, the shares were +20.5% against the S&P 500 on average (median +20.5%), over 2 purchases with a full year of prices; 100% beat the index. After sales, the shares moved −4.6% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on March 3, 2010 into $18,048 by November 2, 2026, +3.6% a year. It held shares 11% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $13,345 (+1.8% a year), and held throughout $90,486 (+14.2%).

$0$50.0k$100k 201020122014201620182020202220242026 $90.5k$18.0k$13.3k
Copying Diodes Inc's insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Diodes Inc's insiders from March 3, 2010, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 11% of the time.
Diodes Inc: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Lu Keh Shew CEO 1 +23.2% (1) 100% 55 −6.8% (53) February 24, 2026
Tang Francis Chief Technology Officer 1 +17.8% (1) 100% 29 +8.2% (26) June 1, 2026
Holland Julie SVP, Corporate Operations 0 — — 28 −1.1% (28) February 5, 2024
White Richard Dallas Corporate Secretary 0 — — 28 +7.4% (27) June 1, 2026
Yang Emily SVP Worldwide Sales/Marketing 0 — — 22 −13.9% (16) May 27, 2026
King Mark A SVP Sales & Marketing 0 — — 18 −4.5% (18) December 6, 2017
Whitmire Brett R CFO 0 — — 18 −13.1% (15) May 13, 2026
Lite-On Semiconductor Corp 10% owner 0 — — 13 +7.8% (13) November 30, 2017
Yu Gary President and CEO 0 — — 11 −42.5% (8) May 27, 2026
Liu Joseph SVP, Operations 0 — — 10 −16.1% (10) July 6, 2015
Zhao Jin President, Diodes Asia 0 — — 8 −25.9% (5) May 27, 2026
Soong Raymond Other 0 — — 7 +13.7% (7) August 26, 2020
Greene Colin European President/VP EU Sls 0 — — 6 −19.7% (6) August 22, 2013
Tang Shiao Kwang Edmund VP of Corporate Admin 0 — — 6 −12.4% (6) July 7, 2014
Beltran Clemente Vice President 0 — — 5 +0.8% (5) July 6, 2017
Tsong Andy SVP Worldwide Products Group 0 — — 5 −45.2% (2) May 27, 2026
Menard Peter M Other 0 — — 3 −25.7% (3) May 30, 2024
Stich John M Director 0 — — 3 −1.4% (3) February 16, 2011
Chen C H Director 0 — — 2 −4.0% (2) November 22, 2021
Yu Evan VP Worldwide Analog Products 0 — — 2 +25.1% (2) February 21, 2020
Chang Chieh Vice President 0 — — 1 −27.6% (1) July 7, 2014
Hui Alex Chi Ming VP, Analog Bus. Group/Pericom 0 — — 1 +4.3% (1) February 29, 2016
Mao Shing Director 0 — — 1 +24.6% (1) March 3, 2010
Tsai Michael Kuo-Chih Director 0 — — 1 +0.2% (1) August 21, 2018
Wertz Carl C VP Finance/Investor Relations 0 — — 1 +26.6% (1) May 28, 2010

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded Diodes Inc

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Diodes Inc in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 21 selling crowds, +1.2%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
February 27, 20266 selling+43.8%+16.2%not yet
February 28, 20253 selling−9.6%+1.0%+19.4%
September 30, 20243 selling−6.9%−31.2%−35.9%
February 29, 20245 selling+4.0%−8.2%−44.0%
February 28, 20235 selling−6.4%−25.2%−56.0%
August 31, 20223 selling+26.0%+28.4%+0.3%
August 31, 20214 selling+8.6%−5.4%−15.3%
November 29, 20193 selling+0.7%+7.1%+29.9%
February 28, 20195 selling−22.0%−15.4%+0.8%
September 28, 20184 selling+10.4%+10.9%+19.4%
June 29, 20183 selling−11.1%+0.5%−5.5%
February 28, 20183 selling+12.8%+21.0%+28.7%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Latest 12 of 21. Total returns from the month end; past patterns are not a forecast.

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