Insider · CIK 0001587462
Hung-Lun (Fred) Chang
officer
Files at AAOI (APPLIED OPTOELECTRONICS, INC.). First filing Nov 12, 2024, latest Sep 10, 2026.
In brief
Hung-Lun (Fred) Chang files SEC Form 4 as officer at AAOI (APPLIED OPTOELECTRONICS, INC.). Since Nov 12, 2024, Hung-Lun (Fred) Chang has reported 0 open-market buys worth $0 and 11 open-market sells worth $29M, the latest filed on Sep 10, 2026.
A track record needs three past buys with six months of prices behind them; Hung-Lun (Fred) Chang has 0, so none is measured yet.
The newest scored trade: sold $3.5M of AAOI on Sep 8, 2026, filed Sep 10, 2026, scored 53 (moderate). In the last 12 months: 0 buys worth $0 and 6 sells worth $26M.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 11
$0 bought, $29M sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
AAOI: APPLIED OPTOELECTRONICS, INC.
AAOIOct 9, 2026 · close 109.64
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 53Moderate | APPLIED OPTOELECTRONICS, INC. | $3.5M 32,172 shares | -11% | +472% from low-50% from high | |
| 40Moderate | APPLIED OPTOELECTRONICS, INC. | $6.9M 40,329 shares | -12% | +897% from low-25% from high | |
| 55Moderate | APPLIED OPTOELECTRONICS, INC. | $5.7M 34,000 shares | -9% | +993% from low-24% from high | |
| 52Moderate | APPLIED OPTOELECTRONICS, INC. | $800k 4,000 shares | -1% | +1044% from low-21% from high | |
| 55Moderate | APPLIED OPTOELECTRONICS, INC. | $5.8M 33,630 shares | -8% | +1011% from low-23% from high | |
| 60Notable | APPLIED OPTOELECTRONICS, INC. | $3.6M 36,400 shares | -13% | +836% from low-26% from high | |
| 45Moderate | APPLIED OPTOELECTRONICS, INC. | $358k 15,784 shares | -6% | +129% from low-48% from high | |
| 47Moderate | APPLIED OPTOELECTRONICS, INC. | $454k 23,837 shares | -8% | +102% from low-54% from high | |
| 58Moderate | APPLIED OPTOELECTRONICS, INC. | $822k 28,518 shares | -13% | +113% from low0% from high | |
| 50Moderate | APPLIED OPTOELECTRONICS, INC. | $617k 20,323 shares | -9% | +161% from low0% from high | |
| 27Weak | APPLIED OPTOELECTRONICS, INC. | $444k 18,915 shares | -8% | +113% from low0% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Sep 9, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | 32,172 0.04% of outstanding | $3.5M | Sep 8, 2026 | $13M |
| Jun 17, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | 40,329 0.05% of outstanding | $6.9M | Jun 17, 2026 | $12M |
| Jun 12, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | 34,000 0.04% of outstanding | $5.9M | Jun 12, 2026 | $10M |
| Jun 5, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | 12,000 0.01% of outstanding | $2.6M | Jun 5, 2026 | $3.6M |
| May 19, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | 33,630 0.04% of outstanding | $5.8M | May 19, 2026 | $3.6M |
| Mar 16, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | 36,400 0.05% of outstanding | $3.6M | Mar 16, 2026 | none |
| Aug 13, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | 15,784 0.03% of outstanding | $357k | Aug 13, 2025 | none |
| May 13, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | 23,837 0.04% of outstanding | $451k | May 13, 2025 | none |
| Nov 20, 2024 | AAOI APPLIED OPTOELECTRONICS, INC. | 20,323 0.05% of outstanding | $617k | Nov 20, 2024 | $426k |
| Nov 8, 2024 | AAOI APPLIED OPTOELECTRONICS, INC. | 18,195 0.04% of outstanding | $426k | Nov 8, 2024 | none |
Transactions
The newest 50 of 78 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 8, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -32,172 | $110.21 | $3.5M | 249,276 | 34 d ago |
| Jul 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,674 | $119.26 | $319k | 283,450 | Jul 23, 2026 |
| Jul 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -613 | $119.26 | $73k | 282,837 | Jul 23, 2026 |
| Jul 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -773 | $119.26 | $92k | 280,064 | Jul 23, 2026 |
| Jul 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -616 | $119.26 | $73k | 281,448 | Jul 23, 2026 |
| Jun 17, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value10b5-1 | -40,329 | $170.60 | $6.9M | 286,124 | Jun 18, 2026 |
| Jun 12, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -27,297 | $172.78 | $4.7M | 360,453 | Jun 16, 2026 |
| Jun 12, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -34,000 | $166.53 | $5.7M | 326,453 | Jun 16, 2026 |
| Jun 5, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -4,000 | $200.07 | $800k | 387,750 | Jun 8, 2026 |
| May 15, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | AGrant or award Common Stock, $.001 par value | +224,199 | $0.00 | $0 | 452,677 | May 19, 2026 |
| May 19, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -27,297 | $190.36 | $5.2M | 425,380 | May 19, 2026 |
| May 19, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -33,630 | $173.26 | $5.8M | 391,750 | May 19, 2026 |
| Apr 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,940 | $150.57 | $443k | 230,678 | Apr 24, 2026 |
| Apr 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -673 | $150.57 | $101k | 230,005 | Apr 24, 2026 |
| Apr 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -850 | $150.57 | $128k | 229,155 | Apr 24, 2026 |
| Apr 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -677 | $150.57 | $102k | 228,478 | Apr 24, 2026 |
| Mar 16, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -36,400 | $100.25 | $3.6M | 233,618 | Mar 18, 2026 |
| Feb 9, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | AGrant or award Common Stock, $.001 par value | +25,799 | $0.00 | $0 | 270,018 | Feb 11, 2026 |
| Jan 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -1,874 | $38.38 | $72k | 248,683 | Jan 26, 2026 |
| Jan 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,940 | $38.38 | $113k | 245,743 | Jan 26, 2026 |
| Jan 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -674 | $38.38 | $26k | 245,069 | Jan 26, 2026 |
| Jan 22, 2026 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -850 | $38.38 | $33k | 244,219 | Jan 26, 2026 |
| Oct 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -1,705 | $33.40 | $57k | 254,621 | Oct 24, 2025 |
| Oct 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,676 | $33.40 | $89k | 251,945 | Oct 24, 2025 |
| Oct 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -614 | $33.40 | $21k | 251,331 | Oct 24, 2025 |
| Oct 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -774 | $33.40 | $26k | 250,557 | Oct 24, 2025 |
| Aug 13, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -15,784 | $22.70 | $358k | 256,326 | Aug 14, 2025 |
| Jul 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -966 | $28.23 | $27k | 277,876 | Jul 24, 2025 |
| Jul 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -1,704 | $28.23 | $48k | 276,172 | Jul 24, 2025 |
| Jul 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,675 | $28.23 | $76k | 273,497 | Jul 24, 2025 |
| Jul 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -613 | $28.23 | $17k | 272,884 | Jul 24, 2025 |
| Jul 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -774 | $28.23 | $22k | 272,110 | Jul 24, 2025 |
| May 13, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -23,837 | $19.06 | $454k | 278,842 | May 14, 2025 |
| May 9, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | AGrant or award Common Stock, $.001 par value | +142,857 | $0.00 | $0 | 357,195 | May 13, 2025 |
| May 13, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -54,516 | $14.76 | $805k | 302,679 | May 13, 2025 |
| Apr 30, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -774 | $10.05 | $7,779 | 214,338 | May 2, 2025 |
| Apr 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -967 | $10.05 | $9,718 | 220,106 | Apr 24, 2025 |
| Apr 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -1,705 | $10.05 | $17k | 218,401 | Apr 24, 2025 |
| Apr 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,675 | $10.05 | $27k | 215,726 | Apr 24, 2025 |
| Apr 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -614 | $10.05 | $6,171 | 215,112 | Apr 24, 2025 |
| Apr 11, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | AGrant or award Common Stock, $.001 par value | +32,397 | $0.00 | $0 | 221,073 | Apr 15, 2025 |
| Jan 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -996 | $30.15 | $30k | 195,296 | Jan 23, 2025 |
| Jan 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -1,472 | $30.15 | $44k | 193,824 | Jan 23, 2025 |
| Jan 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -1,758 | $30.15 | $53k | 192,066 | Jan 23, 2025 |
| Jan 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -2,758 | $30.15 | $83k | 189,308 | Jan 23, 2025 |
| Jan 22, 2025 | AAOI APPLIED OPTOELECTRONICS, INC. | FTax withholding Common Stock, $.001 par value | -632 | $30.15 | $19k | 188,676 | Jan 23, 2025 |
| Nov 8, 2024 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -8,195 | $25.04 | $205k | 216,615 | Dec 10, 2024 |
| Nov 20, 2024 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -20,323 | $30.35 | $617k | 196,292 | Dec 10, 2024 |
| Nov 20, 2024 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value | -20,323 | $30.35 | $617k | 195,572 | Nov 22, 2024 |
| Nov 8, 2024 | AAOI APPLIED OPTOELECTRONICS, INC. | SOpen-market sale Common Stock, $.001 par value10b5-1 | -10,000 | $22.11 | $221k | 224,810 | Nov 12, 2024 |
50 of 78 rows shown.
Questions about Hung-Lun (Fred) Chang
Answered from the filings on this page, as of the latest one.
Is Hung-Lun (Fred) Chang buying or selling?
In the last 12 months Hung-Lun (Fred) Chang reported 0 open-market buys worth $0 and 6 open-market sells worth $26M on SEC Form 4; the latest was sold $3.5M of AAOI on Sep 8, 2026. Grants, option exercises and tax withholding are not counted.
How did Hung-Lun (Fred) Chang's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Hung-Lun (Fred) Chang has 0.
Where does Hung-Lun (Fred) Chang file Form 4?
Hung-Lun (Fred) Chang has filed Form 4 at AAOI (APPLIED OPTOELECTRONICS, INC.) as *** See Remarks. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.