Updated Jul 16, 2026 · Last SEC filing 2026-07-09
TRIO-TECH INTERNATIONAL (TRT) has filed 9 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-09. 4 Form 8-K material event filings were reported by TRT in the last 90 days. 3 Form 144 notices of proposed sale were filed for TRT stock. InsiderAlpha tracks every TRT SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Special Industry Machinery, NEC (SIC 3559) |
|---|---|
| SEC CIK | 0000732026 |
| Form 4 filings (90d) | 9 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 3 |
| Latest Form 4 filing | 2026-07-09 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| ADELMAN JASON T | Insider | M — Option exercise | 70.0K | $3.11 | $218K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 5.0K | $14.88 | $74K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 5.0K | $15.84 | $79K | SEC | |
| ADELMAN JASON T | Insider | M — Option exercise | 40.0K | $3.88 | $155K | SEC | |
| ADELMAN JASON T | Insider | M — Option exercise | 70.1K | $2.57 | $180K | SEC | |
| TING HOCK MING | Director | S — Open-market sale | 17.2K | $16.65 | $286K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 5.6K | $13.97 | $78K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 9.4K | $14.01 | $131K | SEC | |
| HOROWITZ RICHARD M | Insider | S — Open-market sale | 67.5K | $18.10 | $1.22M | SEC | |
| ADELMAN JASON T | Insider | M — Option exercise | 39.8K | $2.25 | $89K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 10.0K | $18.11 | $181K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 10.0K | $18.76 | $188K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 5.0K | $14.87 | $74K | SEC | |
| ADELMAN JASON T | Insider | S — Open-market sale | 10.0K | $16.57 | $166K | SEC | |
| TING HOCK MING | Insider | S — Open-market sale | 2.0K | $7.13 | $14K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for TRIO-TECH INTERNATIONAL (TRT). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| ADELMAN JASON T | 20 | $1.74M |
| TING HOCK MING | 3 | $328K |
| Srinivasan Anitha | 1 | — |
| LIM HWEE POH | 1 | — |
| HOROWITZ RICHARD M | 1 | $1.22M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in TRT insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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