Trio-Tech International (TRT) Insider Ownership

Historic Insider Ownership Trends

Through the 90-day period concluding February 07, 2026, Trio-Tech International's top three insider stakeholders include President And Ceo Siew Wai Yong (1.26Mn shares), TenPercentOwner A Charles Wilson (871.00K shares), Director Richard M Horowitz (621.50K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Siew Wai Yong President And Ceo 1,260,247 29 Jan, 2026
Richard M Horowitz 621,500 09 Jan, 2026
A Charles Wilson 871,000 18 Mar, 2024
Hock Ming Ting 183,644 20 Jan, 2026
Hwee Poh Lim Vice President 171,466 01 Aug, 2022
Jason T Adelman 76,000 15 Oct, 2025
Siew Kuan Soon Corporate Vice President 50,200 14 Dec, 2023
Anitha Srinivasan Chief Financial Officer 19,000 15 Oct, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
27 Jan, 2026 Siew Wai Yong TRT Common Stock A 80,111 $2.64 1,260,247 D M
16 Jan, 2026 Hock Ming Ting Common Stock D 70 $6.78 183,644 D S
15 Jan, 2026 Hock Ming Ting Common Stock D 3,000 $6.90 186,714 D S
12 Jan, 2026 Hock Ming Ting TRT Common Stock D 5,000 $7.08 189,714 D S
07 Jan, 2026 Hock Ming Ting TRT Common Stock A 600 $7.52 194,714 D S
07 Jan, 2026 Hock Ming Ting TRT Common Stock A 2,000 $7.38 197,314 D S
07 Jan, 2026 Hock Ming Ting TRT Common Stock A 2,000 $7.47 195,314 D S
07 Jan, 2026 Hock Ming Ting TRT Common Stock A 2,000 $7.20 199,314 D S
07 Jan, 2026 Richard M Horowitz Common Stock D 7,500 $7.50 621,500 D S
06 Jan, 2026 Hock Ming Ting Common Stock D 3,000 $6.63 183,714 D S
13 Oct, 2025 Jason T Adelman Common Stock A 20,000 $5.27 76,000 D M
13 Oct, 2025 Anitha Srinivasan - - 19,000 D
13 Oct, 2025 Anitha Srinivasan - - 12,000 D
13 Oct, 2025 Anitha Srinivasan Common Stock A 4,500 $4.88 12,000 D M
13 Oct, 2025 Anitha Srinivasan Common Stock A 3,500 $5.01 19,000 D M
13 Mar, 2025 Richard M Horowitz - - 790,728 D
13 Mar, 2025 Richard M Horowitz TRT Common Stock A 20,000 $2.53 790,728 D M
17 Oct, 2024 Jason T Adelman Common Stock D 3,000 $7.40 48,000 D S
16 Oct, 2024 Jason T Adelman Common Stock D 3,000 $7.30 54,000 D S
16 Oct, 2024 Jason T Adelman - - 54,000 D