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US · SEC FORM 4
DATA I/O CORP
DAIO · Nasdaq · CIK 0000351998 · Technology · Electronic Components
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
5 Form 4 transaction lines observed in the same window
0 sales · 5 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
—
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-05-07 · SMITH EDWARD J.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.
Price performance
- 1M
- +3.5%
- 3M
- -22.1%
- 6M
- +23.6%
- 12M
- —
Volatility & liquidity
- Volatility
- 57.0%
- Beta
- —
- Avg daily value
- —
Valuation
- Market cap
- —
- P/E
- —
Fundamentals
- Profit margin
- -24.4%
- ROE
- -38.7%
- Industry
- Electronic Components
Market data
Price data up to: 2026-10-01 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 15,678
- Previous report
- 6,731
- Avg daily volume
- 23,409
- Days to cover
- ≤ 1.0
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2025-05-07 | SMITH EDWARD J | Purchase (P) | Common Stock | 5,000 | USD 2.46 | USD 12,300 | SEC filing ↗ |
| 2025-05-06 | Wentworth William O. | Purchase (P) | Common Stock | 10,332 | USD 2.42 | USD 25,003 | SEC filing ↗ |
| 2025-05-01 | Wentworth William O. | Purchase (P) | Common Stock | 10,585 | USD 2.36 | USD 24,981 | SEC filing ↗ |
| 2024-08-26 | Brown Douglas Wells | Purchase (P) | Common Stock | 3,000 | USD 2.66 | USD 7,980 | SEC filing ↗ |
| 2020-03-12 | Ambrose Anthony | Purchase (P) | common stock | 10,000 | USD 2.74 | USD 27,400 | SEC filing ↗ |
Form 4 evidence
8 transaction lines in the latest 365-day window; 164 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-01 | DiBona Charles Joseph | Tax withholding (F) | Common Stock | 10,345 | USD 2.89 | USD 29,897 | SEC filing ↗ |
| 2026-07-08 | Washlow Sally A. | Award / grant (A) | Common Stock | 16,260 | USD 3.56 | USD 57,886 | SEC filing ↗ |
| 2026-07-08 | WASZAK STEVEN M | Award / grant (A) | Common Stock | 16,260 | USD 3.56 | USD 57,886 | SEC filing ↗ |
Show recent Form 4 evidence (8 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-01 | DiBona Charles Joseph | Tax withholding (F) | Common Stock | 10,345 | USD 2.89 | USD 29,897 | SEC filing ↗ |
| 2026-07-08 | Washlow Sally A. | Award / grant (A) | Common Stock | 16,260 | USD 3.56 | USD 57,886 | SEC filing ↗ |
| 2026-07-08 | WASZAK STEVEN M | Award / grant (A) | Common Stock | 16,260 | USD 3.56 | USD 57,886 | SEC filing ↗ |
| 2026-07-08 | SMITH EDWARD J | Award / grant (A) | Common Stock | 16,260 | USD 3.56 | USD 57,886 | SEC filing ↗ |
| 2026-07-08 | Larson Garrett Riley | Award / grant (A) | Common Stock | 16,260 | USD 3.56 | USD 57,886 | SEC filing ↗ |
| 2025-12-03 | Wentworth William O. | Award / grant (A) | Common Stock | 1,100 | USD 2.80 | USD 3,080 | SEC filing ↗ |
| 2025-12-03 | WASZAK STEVEN M | Award / grant (A) | Common Stock | 7,950 | USD 2.79 | USD 22,180 | SEC filing ↗ |
| 2025-12-02 | Wentworth William O. | Award / grant (A) | Common Stock | 7,455 | USD 2.78 | USD 20,725 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | DAIO |
| CIK | 0000351998 |
| Sector | Technology |
| Industry | Electronic Components Yahoo Finance |
| SEC SIC | 3825 Instruments For Meas & Testing of Electricity & Elec Signals |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 164 transaction lines from 2020-02-01 to 2026-09-01 5 P purchase lines · 24 S sale lines · 135 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.