# Drilling Tools International Corporation (DTI) insider trading

> In the 12 months to Nov 12, 2026, one DTI insider reported open-market sales of $189.6K across 12 filings; no open-market purchases were filed.

Canonical: https://massive.com/quote/dti/insider-trading
Latest filing: 2026-08-17 (last 12 months; source: SEC EDGAR)
Source: Massive (https://massive.com/docs/llms.txt)

## Summary

| Measure | Value | Detail |
| --- | --- | --- |
| Open-market sales | $189.6K | 12 filings · 1 insider |
| Open-market purchases | $0 | 0 filings |
| Pre-arranged sales (10b5-1) | 12 of 12 | All $189.6K sold was pre-arranged |

## Open-market trades by insider

| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
| --- | --- | --- | --- | --- | --- | --- |
| Michael Wayne Domino JR. | President, DTR Division | $189.6K | — | 12 | 100% of sales | 2026-08-17 |

## Open-market trades by filing

12 filings in the last 12 months, newest first.

| Filed | Traded | Insider | Role | Type | Shares | Avg price | Value | Held after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-08-17 | 2026-08-14 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $2.50 | $5.2K | 1,430,006 | — |
| 2026-06-15 | 2026-06-15 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $2.56 | $5.3K | 1,439,584 | — |
| 2026-05-15 | 2026-05-15 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $3.07 | $6.4K | 1,441,667 | — |
| 2026-04-15 | 2026-04-15 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $2.89 | $6.0K | 1,443,750 | — |
| 2026-03-31 | 2026-03-31 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 3,169 | $4.00 | $12.7K | 1,445,833 | — |
| 2026-03-30 | 2026-03-30 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 997 | $4.00 | $4.0K | 1,449,002 | — |
| 2026-03-16 | 2026-03-16 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $3.58 | $7.5K | 1,449,999 | — |
| 2026-02-17 | 2026-02-17 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 6,249 | $3.96 | $24.7K | 1,426,805 | — |
| 2026-01-21 | 2026-01-21 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 24,996 | $4.00 | $100.0K | 1,433,054 | — |
| 2026-01-16 | 2026-01-15 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $3.36 | $7.0K | 1,458,050 | — |
| 2025-12-15 | 2025-12-15 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $2.65 | $5.5K | 1,460,133 | — |
| 2025-11-17 | 2025-11-17 | Michael Wayne Domino JR. | President, DTR Division | Sale (10b5-1) | 2,083 | $2.51 | $5.2K | 1,462,216 | — |

## Other insider activity (not market trades)

- Option exercises: 8 records
- Tax withholding: 5 records
- Other: 11 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

## How to read this page

- **Open-market purchase or sale**: A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- **Pre-arranged (10b5-1)**: The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- **Filing date**: Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.

## FAQ

### Has the Drilling Tools International Corporation's CEO sold stock?

No. Robert Wayne Prejean (CEO) made no open-market sales filed as CEO in the last 12 months.

### How current is DTI’s insider data?

These are DTI Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

### What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

## Live data

This page joins two Massive endpoints: Form 4 filings and daily prices. The DTI Form 4 request:

- `GET https://api.massive.com/stocks/filings/vX/form-4?tickers=DTI&filing_date.gte=2025-11-12&sort=filing_date.desc&limit=500`

Requests need a Massive API key. API reference for agents: https://massive.com/docs/llms.txt. Connect an AI agent through the Massive MCP server: https://massive.com/docs/ai-tools.

## Related

- [Drilling Tools International Corporation (DTI) stock price](https://massive.com/quote/dti.md)
- [Recent insider trading](https://massive.com/quote/insider-trading.md)
- [Markets overview](https://massive.com/quote/index.md)

Nothing here is investment advice. Data and content are provided for informational purposes under the Massive Terms of Service: https://massive.com/terms