Chang Hung-Lun (Fred) — SEC Form 4 filings
SEC reporting owner CIK 1587462. 30 Form 4 filings on record with FilingPulse; latest filed 2026-09-10.
Transaction summary — filings shown
Covers all 30 filings on record, filed 2024-01-09 to 2026-09-10. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 13 legs across 11 filings — 287,908 shares, $29,059,538 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 65.
- Largest priced transaction: sale of 40,329 shares @ $170.60 ($6,880,127) in APPLIED OPTOELECTRONICS, INC., filed 2026-06-18.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| APPLIED OPTOELECTRONICS, INC. (AAOI) | *** See Remarks | 30 | — | 13 legs · 287,908 sh · $29,059,538 | 65 |
Form 4 filings — Chang Hung-Lun (Fred)
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-10 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 32,172 @ $110.21 | EDGAR |
| 2026-07-23 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 2,674 @ $119.26 · Tax withholding (F): 613 @ $119.26 · Tax withholding (F): 773 @ $119.26 · Tax withholding (F): 616 @ $119.26 | EDGAR |
| 2026-06-18 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 40,329 @ $170.60 | EDGAR |
| 2026-06-16 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 27,297 @ $172.78 · Sale (S): 34,000 @ $166.53 | EDGAR |
| 2026-06-08 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 4,000 @ $200.07 | EDGAR |
| 2026-05-19 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Grant/award (A): 224,199 @ $0 · Tax withholding (F): 27,297 @ $190.36 · Sale (S): 33,630 @ $173.26 | EDGAR |
| 2026-04-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 2,940 @ $150.57 · Tax withholding (F): 673 @ $150.57 · Tax withholding (F): 850 @ $150.57 · Tax withholding (F): 677 @ $150.57 | EDGAR |
| 2026-03-18 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 36,400 @ $100.25 | EDGAR |
| 2026-02-11 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Grant/award (A): 25,799 @ $0 | EDGAR |
| 2026-01-26 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 1,874 @ $38.38 · Tax withholding (F): 2,940 @ $38.38 · Tax withholding (F): 674 @ $38.38 · Tax withholding (F): 850 @ $38.38 | EDGAR |
| 2025-10-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 1,705 @ $33.40 · Tax withholding (F): 2,676 @ $33.40 · Tax withholding (F): 614 @ $33.40 · Tax withholding (F): 774 @ $33.40 | EDGAR |
| 2025-08-14 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 15,784 @ $22.70 | EDGAR |
| 2025-07-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 966 @ $28.23 · Tax withholding (F): 1,704 @ $28.23 · Tax withholding (F): 2,675 @ $28.23 · Tax withholding (F): 613 @ $28.23 · Tax withholding (F): 774 @ $28.23 | EDGAR |
| 2025-05-14 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 23,837 @ $19.06 | EDGAR |
| 2025-05-13 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Grant/award (A): 142,857 @ $0 · Tax withholding (F): 54,516 @ $14.76 | EDGAR |
| 2025-05-02 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 774 @ $10.05 | EDGAR |
| 2025-04-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 967 @ $10.05 · Tax withholding (F): 1,705 @ $10.05 · Tax withholding (F): 2,675 @ $10.05 · Tax withholding (F): 614 @ $10.05 | EDGAR |
| 2025-04-15 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Grant/award (A): 32,397 @ $0 | EDGAR |
| 2025-01-23 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 996 @ $30.15 · Tax withholding (F): 1,472 @ $30.15 · Tax withholding (F): 1,758 @ $30.15 · Tax withholding (F): 2,758 @ $30.15 · Tax withholding (F): 632 @ $30.15 | EDGAR |
| 2024-12-10 | 4/A | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 8,195 @ $25.04 · Sale (S): 20,323 @ $30.35 | EDGAR |
| 2024-11-22 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 20,323 @ $30.35 | EDGAR |
| 2024-11-12 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Sale (S): 10,000 @ $22.11 · Sale (S): 8,915 @ $25.04 | EDGAR |
| 2024-10-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 946 @ $18.51 · Tax withholding (F): 1,398 @ $18.51 · Tax withholding (F): 1,669 @ $18.51 · Tax withholding (F): 2,618 @ $18.51 · Tax withholding (F): 601 @ $18.51 | EDGAR |
| 2024-07-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 997 @ $9.68 · Tax withholding (F): 1,473 @ $9.68 · Tax withholding (F): 1,759 @ $9.68 · Tax withholding (F): 2,759 @ $9.68 · Tax withholding (F): 633 @ $9.68 | EDGAR |
| 2024-06-17 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Grant/award (A): 80,910 @ $0 · Disposition to issuer (D): 40,455 @ $10.44 · Tax withholding (F): 15,614 @ $10.44 | EDGAR |
| 2024-05-28 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 686 @ $12.12 | EDGAR |
| 2024-05-01 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Grant/award (A): 25,671 @ $0 | EDGAR |
| 2024-04-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 1,080 @ $12.12 · Tax withholding (F): 1,596 @ $12.12 · Tax withholding (F): 1,906 @ $12.12 · Tax withholding (F): 2,990 @ $12.12 | EDGAR |
| 2024-01-24 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Tax withholding (F): 1,578 @ $15.81 · Tax withholding (F): 1,080 @ $15.81 · Tax withholding (F): 1,596 @ $15.81 · Tax withholding (F): 1,906 @ $15.81 · Tax withholding (F): 2,990 @ $15.81 | EDGAR |
| 2024-01-09 | 4 | APPLIED OPTOELECTRONICS, INC. (AAOI) | Option exercise (M): 1,100 @ $13.84 · Tax withholding (F): 922 @ $18.53 · Option exercise (M): 1,100 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-09 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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