Data I/O Corp (DAIO) Insider Ownership

Historic Insider Ownership Trends

Through the 90-day period concluding February 19, 2026, Data I's top three insider stakeholders include President Anthony Ambrose (471.05K shares), Vice President Cfo Coo Joel S Hatlen (178.12K shares), Vice President Cto Rajeev Gulati (167.90K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Anthony Ambrose President 471,048 03 Jun, 2024
Joel S Hatlen Vice President Cfo Coo 178,119 02 Jun, 2023
Rajeev Gulati Vice President Cto 167,897 03 May, 2024
Michael R Tidwell Vp Mktg & Corp Bus Dev 147,774 03 May, 2024
Douglas Wells Brown 101,759 19 May, 2025
Charles Joseph Dibona Vice President & Cfo 100,000 30 Sep, 2025
Gerald Yat Ng Vice President Cfo 93,750 03 May, 2024
Sally A. Washlow 72,651 19 May, 2025
Mark J Gallenberger 69,509 20 May, 2021
Edward J Smith 63,115 19 May, 2025
William O. Wentworth President 53,972 05 Dec, 2025
Garrett Riley Larson 30,572 19 May, 2025
Cheemin Bo-Linn 15,401 20 May, 2022
Steven M Waszak 7,950 04 Dec, 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
03 Dec, 2025 Steven M Waszak Common Stock A 7,950 $2.79 7,950 D A
03 Dec, 2025 William O. Wentworth Common Stock A 1,100 $2.80 53,972 D A
02 Dec, 2025 William O. Wentworth Common Stock A 7,455 $2.78 52,872 D A
01 Sep, 2025 Charles Joseph Dibona - - 100,000 D
01 Sep, 2025 Charles Joseph Dibona Common Stock A 100,000 $3.15 100,000 D A
15 May, 2025 Edward J Smith Common Stock A 20,300 $2.48 63,115 D A
15 May, 2025 Sally A. Washlow Common Stock A 20,300 $2.48 72,651 D A
15 May, 2025 Douglas Wells Brown Common Stock A 20,300 $2.48 101,759 D A
15 May, 2025 Garrett Riley Larson Common Stock A 20,300 $2.48 30,572 D A
15 May, 2025 Garrett Riley Larson - - 30,572 D
07 May, 2025 Edward J Smith - - 42,815 D
07 May, 2025 Edward J Smith Common Stock A 5,000 $2.46 42,815 D P
06 May, 2025 William O. Wentworth Common Stock A 10,332 $2.42 45,417 D P
02 May, 2025 William O. Wentworth Common Stock A 10,585 $2.36 35,085 D A
01 May, 2025 William O. Wentworth Common Stock A 10,585 $2.36 35,085 D P
01 May, 2025 William O. Wentworth - - 35,085 D
23 Jan, 2025 Garrett Riley Larson Common Stock A 5,272 $2.91 5,272 D A
26 Aug, 2024 Douglas Wells Brown - - 81,459 D
26 Aug, 2024 Douglas Wells Brown Common Stock A 3,000 $2.66 81,459 D P
01 Jun, 2024 Gerald Yat Ng COMMON STOCK A 18,750 $2.87 93,750 D A