Data I/O Corp
DAIO- Exchange
- Nasdaq
- Industry
- Instruments For Meas & Testing of Electricity & Elec Signals
- SEC CIK
- 0000351998
In the last 90 days, Data I/O Corp insiders filed 1 open-market purchase and 0 sales; 35 institutions reported holding it in 13F filings for Q2 2026, worth $12.2M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Data I/O Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 1 filing
- 1 insider, $1.00M in total
- Open-market sells
- 0 filings
- Insiders trading
- 1
- Net value
- +$1.00M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Data I/O Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Red Oak Partners, LLC | 10% Owner | 130,199Indirect | Oct 27, 2026 | 1 |
| Red Oak Fund, LP | 10% Owner | 130,199Indirect | Oct 27, 2026 | 1 |
| Sandberg David | 10% Owner | 130,199Indirect | Oct 27, 2026 | 1 |
| Red Oak Long Fund, LP | 10% Owner | 130,199Indirect | Oct 27, 2026 | 1 |
| DiBona Charles Joseph | Vice President & CFO | 89,655 | Sep 3, 2026 | 1 |
| Larson Garrett Riley | Director | 46,832 | Jul 10, 2026 | 1 |
| Smith Edward J | Director | 79,375 | Jul 10, 2026 | 1 |
| Washlow Sally A. | Director | 88,911 | Jul 10, 2026 | 1 |
| Waszak Steven M | Director | 24,210 | Jul 10, 2026 | 2 |
| Wentworth William O. | President | 52,872 | Dec 5, 2025 | 2 |
| Brown Douglas Wells | Director | 101,759 | May 19, 2025 | 0 |
| Ng Gerald Yat | Vice President CFO | 88,191 | Feb 12, 2025 | 0 |
| Ambrose Anthony | President | 471,048 | Jun 3, 2024 | 0 |
| Gulati Rajeev | Vice President CTO | 167,897 | Jun 3, 2024 | 0 |
| Tidwell Michael R | VP Mktg & Corp Bus Dev | 147,774 | Jun 3, 2024 | 0 |
| Hatlen Joel S | Vice President CFO COO | 178,119 | Jun 2, 2023 | 0 |
| Bo-Linn Cheemin | Director | 15,401 | May 20, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 27, 2026 (view filing)5:32 PM ET | Oct 20 | 7 daysLate | Red Oak Partners, LLC and 3 others10% Owner | PPurchase | +373.1K | $2.68 | +$1.00M | New position130.2K after | 2 lots |
| Oct 27, 2026 (view filing)5:32 PM ET | Oct 20 | 7 daysLate | Red Oak Partners, LLC and 3 others10% Owner | PPurchase | +1.12M | – | – | – | Derivative2 lotsPrice outlier |
| May 8, 2025 (view filing) | May 7 | 1 day | Smith Edward JDirector | PPurchase | +5.00K | $2.46 | +$12.3K | +13.2%42.8K after | |
| May 8, 2025 (view filing) | May 1 | 7 days | Wentworth William O.President | PPurchase | +10.6K | $2.36 | +$25.0K | +43.2%35.1K after | Amended |
| May 7, 2025 (view filing) | May 6 | 1 day | Wentworth William O.President | PPurchase | +10.3K | $2.42 | +$25.0K | +29.4%45.4K after | |
| Aug 29, 2024 (view filing) | Aug 26 | 3 daysLate | Brown Douglas WellsDirector | PPurchase | +3.00K | $2.66 | +$7.98K | +3.8%81.5K after | |
| Nov 1, 2021 (view filing) | Nov 1 | Same day | Ambrose AnthonyPresident | SSale | −10.6K | $5.31 | −$56.0K | −2.7%378.7K after | |
| Oct 4, 2021 (view filing) | Oct 1-4 | 3 days | Ambrose AnthonyPresident | SSale | −7.92K | $6.30 | −$49.9K | −2.0%389.2K after | 2 lots |
| Sep 14, 2021 (view filing) | Sep 10-14 | 4 days | Gulati RajeevVice President CTO | SSale | −7.56K | $6.68 | −$50.5K | −5.4%131.7K after | 3 lots |
| Sep 9, 2021 (view filing) | Sep 9 | Same day | Brown Douglas WellsDirector | SSale | −12.0K | $7.28 | −$87.4K | −21.4%44.2K after | |
| Sep 9, 2021 (view filing) | Sep 7-9 | 2 days | Hatlen Joel SVice President CFO COO | SSale | −18.2K | $7.08 | −$128.9K | −9.8%167.9K after | 3 lots |
| Sep 2, 2021 (view filing) | Sep 1-2 | 1 day | Ambrose AnthonyPresident | SSale | −27.0K | $5.65 | −$152.3K | −6.4%397.2K after | 2 lots |
| Aug 4, 2021 (view filing) | Aug 4 | Same day | Brown Douglas WellsDirector | SSale | −5.36K | $6.47 | −$34.7K | −8.7%56.2K after | |
| Jul 13, 2021 (view filing) | Jul 9-13 | 4 days | Hatlen Joel SVice President CFO COO | SSale | −3.56K | $6.00 | −$21.4K | −1.9%186.2K after | 2 lots |
| Jul 8, 2021 (view filing) | Jul 6-8 | 2 days | Hatlen Joel SVice President CFO COO | SSale | −19.2K | $6.27 | −$120.3K | −9.2%189.7K after | 2 lots |
| Jul 8, 2021 (view filing) | Jul 7 | 1 day | Hatlen Joel SVice President CFO COO | SSale | −1.67K | $6.10 | −$10.2K | −0.9%190.5K after |