Trio-Tech International's top three insider shareholders as of September 09, 2026 are Siew Wai Yong (President And Ceo, 1.26Mn shares), Siew Wai Yong (President And Ceo, 1.26Mn shares), Siew Wai Yong (President And Ceo, 1.11Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Siew Wai Yong | President And Ceo | 2,368,383 | 0 | 2,368,383 | 42.2% | 29 Jan, 2026 |
| 2 | Richard M Horowitz | Director, TenPercentOwner | 1,326,340 | 0 | 1,326,340 | 23.6% | 27 May, 2026 |
| 3 | A Charles Wilson | TenPercentOwner | 871,000 | 0 | 871,000 | 15.5% | 15 Mar, 2024 |
| 4 | Hwee Poh Lim | Sr Corp Vp And Coo (Testing) | 402,734 | 0 | 402,734 | 7.2% | 30 Apr, 2026 |
| 5 | Hock Ming Ting | Vice President, Cfo | 285,088 | 0 | 285,088 | 5.1% | 28 May, 2026 |
| 6 | Jason T Adelman | Director | 210,094 | 0 | 210,094 | 3.7% | 23 Jun, 2026 |
| 7 | Siew Kuan Soon | Corporate Vice President | 94,900 | 0 | 94,900 | 1.7% | 13 Dec, 2023 |
| 8 | Anitha Srinivasan | Chief Financial Officer | 51,017 | 0 | 51,017 | 0.9% | 29 Jul, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 27 Jul, 2026 | Anitha Srinivasan | Chief Financial Officer | Acquired M | 3,000 | $2.59 | $7.77K | 29,015 | Direct |
| 27 Jul, 2026 | Anitha Srinivasan | Chief Financial Officer | Acquired M | 3,002 | $2.44 | $7.32K | 32,017 | Direct |
| 27 Jul, 2026 | Anitha Srinivasan | Chief Financial Officer | Disposed M | 3,000 | $0.00 | $0 | 0 | Direct |
| 27 Jul, 2026 | Anitha Srinivasan | Chief Financial Officer | Disposed M | 3,002 | $0.00 | $0 | 0 | Direct |
| 07 Jul, 2026 | Hwee Poh Lim | Sr Corp Vp And Coo (Testing) | Acquired A | 5,000 | $0.00 | $0 | 5,000 | Direct |
| 07 Jul, 2026 | Anitha Srinivasan | Chief Financial Officer | Acquired A | 5,000 | $0.00 | $0 | 5,000 | Direct |
| 18 Jun, 2026 | Jason T Adelman | Director | Disposed S | 5,000 | $15.84 | $79.20K | 145,094 | Direct |
| 19 Jun, 2026 | Jason T Adelman | Director | Disposed S | 5,000 | $14.88 | $74.40K | 140,094 | Direct |
| 23 Jun, 2026 | Jason T Adelman | Director | Acquired M | 70,000 | $3.11 | $217.70K | 210,094 | Direct |
| 23 Jun, 2026 | Jason T Adelman | Director | Disposed M | 70,000 | $0.00 | $0 | 0 | Direct |
| 28 May, 2026 | Jason T Adelman | Director | Acquired M | 40,000 | $3.88 | $155.20K | 80,000 | Direct |
| 28 May, 2026 | Jason T Adelman | Director | Acquired M | 70,094 | $2.57 | $180.14K | 150,094 | Direct |
| 28 May, 2026 | Jason T Adelman | Director | Disposed M | 40,000 | $0.00 | $0 | 0 | Direct |
| 29 May, 2026 | Jason T Adelman | Director | Disposed M | 70,094 | $0.00 | $0 | 0 | Direct |
| 26 May, 2026 | Hock Ming Ting | Director | Disposed S | 17,200 | $16.65 | $286.38K | 131,044 | Direct |
| 18 May, 2026 | Richard M Horowitz | Director, TenPercentOwner | Disposed S | 67,500 | $18.10 | $1.22Mn | 664,784 | Direct |
| 18 May, 2026 | Jason T Adelman | Director | Acquired M | 39,750 | $2.25 | $89.44K | 89,795 | Direct |
| 18 May, 2026 | Jason T Adelman | Director | Disposed S | 10,000 | $18.76 | $187.60K | 79,975 | Direct |
| 18 May, 2026 | Jason T Adelman | Director | Disposed S | 10,000 | $18.11 | $181.10K | 69,975 | Direct |
| 18 May, 2026 | Jason T Adelman | Director | Disposed S | 10,000 | $16.57 | $165.70K | 59,975 | Direct |