Data I/O Corporation
Data I/O Corporation (DAIO) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · DAIO · as of Jun 8, 2026
Activity summary
Buy transactions
3
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
∞
Buy/Sell (by trades)
Overall sentiment
Data I/O Corporation insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
DAIO insider buying and selling by quarter
DAIO insider selling · DAIO insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · DAIO ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
DAIO executive sell shares · DAIO board member insider trading · DAIO insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Dec 2, 2025 | Wentworth William O. President · Director | Award | 7,455 | $21K | Form 4 |
| Dec 3, 2025 | Wentworth William O. President · Director | Award | 1,100 | $3K | Form 4 |
| Dec 3, 2025 | WASZAK STEVEN M Director | Award | 7,950 | $22K | Form 4 |
| Sep 1, 2025 | DiBona Charles Joseph Vice President & CFO | Award | 100,000 | $315K | Form 4 |
| May 15, 2025 | SMITH EDWARD J Director | Award | 20,300 | $50K | Form 4 |
| May 15, 2025 | Larson Garrett Riley Director | Award | 20,300 | $50K | Form 4 |
| May 15, 2025 | Brown Douglas Wells Director | Award | 20,300 | $50K | Form 4 |
| May 15, 2025 | Washlow Sally A. Director | Award | 20,300 | $50K | Form 4 |
| May 7, 2025 | SMITH EDWARD J Director | Purchase | 5,000 | $12K | Form 4 |
| May 6, 2025 | Wentworth William O. President · Director | Purchase | 10,332 | $25K | Form 4 |
| May 2, 2025 | Wentworth William O. President | Award | 10,585 | $25K | Form 4 |
| Jan 23, 2025 | Larson Garrett Riley Director | Award | 5,272 | $15K | Form 4 |
| Sep 3, 2024 | Wentworth William O. President · Director | Award | 200,000 | $478K | Form 4 |
| Aug 26, 2024 | Brown Douglas Wells Director | Purchase | 3,000 | $8K | Form 4 |
| Jun 1, 2024 | Gulati Rajeev Vice President CTO | Other | 1,482 | $4K | Form 4 |
| Jun 1, 2024 | Tidwell Michael R VP Mktg & Corp Bus Dev | Other | 2,223 | $6K | Form 4 |
| Jun 1, 2024 | Ambrose Anthony President · Director | Other | 6,652 | $19K | Form 4 |
| Jun 1, 2024 | Ambrose Anthony President · Director | Other | 9,978 | $29K | Form 4 |
| May 16, 2024 | Wentworth William O. Director | Award | 14,100 | $41K | Form 4 |
| May 16, 2024 | SMITH EDWARD J Director | Award | 14,100 | $41K | Form 4 |
| May 16, 2024 | Brown Douglas Wells Director | Award | 14,100 | $41K | Form 4 |
| May 16, 2024 | Washlow Sally A. Director | Award | 14,100 | $41K | Form 4 |
| May 14, 2024 | Ambrose Anthony President · Director | Gift | 7,500 | $22K | Form 4 |
| Jul 3, 2023 | Ng Gerald Yat Vice President Finance | Award | 75,000 | $327K | Form 4 |
| May 18, 2023 | Wentworth William O. Director | Award | 10,400 | $46K | Form 4 |
Wentworth William O.
President · Director
Date
Dec 2
Shares
7,455
Price
$2.78
Value
$21K
Wentworth William O.
President · Director
Date
Dec 3
Shares
1,100
Price
$2.80
Value
$3K
DiBona Charles Joseph
Vice President & CFO
Date
Sep 1
Shares
100,000
Price
$3.15
Value
$315K
Wentworth William O.
President · Director
Date
May 6
Shares
10,332
Price
$2.42
Value
$25K
Wentworth William O.
President · Director
Date
Sep 3
Shares
200,000
Price
$2.39
Value
$478K
Tidwell Michael R
VP Mktg & Corp Bus Dev
Date
Jun 1
Shares
2,223
Price
$2.87
Value
$6K
Ambrose Anthony
President · Director
Date
Jun 1
Shares
6,652
Price
$2.87
Value
$19K
Ambrose Anthony
President · Director
Date
Jun 1
Shares
9,978
Price
$2.87
Value
$29K
Ambrose Anthony
President · Director
Date
May 14
Shares
7,500
Price
$2.95
Value
$22K
Ng Gerald Yat
Vice President Finance
Date
Jul 3
Shares
75,000
Price
$4.36
Value
$327K
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About DAIO insider trading
DAIO insider trades
Data I/O Corporation (DAIO) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Wentworth William O. (President · Director), WASZAK STEVEN M (Director), DiBona Charles Joseph (Vice President & CFO). Over the past 12 months, 3 insiders have filed transactions with the SEC. DAIO insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Data I/O Corporation's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
DAIO insider trading · 5 questionsThe insiders of Data I/O Corporation (DAIO) include executives and directors such as Wentworth William O. (President · Director), WASZAK STEVEN M (Director), DiBona Charles Joseph (Vice President & CFO), among others. Over the past 12 months, 3 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026