Jack D. Furst - 13 May 2026 Form 4 Insider Report for Drilling Tools International Corp (DTI)

Reporting relationship: Director
Issuer ticker: DTI
Reported as of: 13 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 May 2026, 16:05:08 UTC
Prior SEC filing: 30 Apr 2026
Next SEC filing: 10 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ John Niedzwiecki, as Attorney-in-fact

Key filing fact

Jack D. Furst filed Form 4 for Drilling Tools International Corp (DTI) on 13 May 2026.

Key facts

This page summarizes Jack D. Furst's Form 4 filing for Drilling Tools International Corp (DTI).
2 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 13 May 2026, 16:05.

Change

Previous filing in this sequence was filed on 30 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001062103 Primary reporting owner

FURST JACK D

Relationship: Director
Address: 10370 RICHMOND AVENUE, SUITE 1000, HOUSTON
Signature: /s/ John Niedzwiecki, as Attorney-in-fact
Signature date: 13 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DTI transaction

Common Stock

Options Exercise

Transaction value
Shares: +28,626
Change %: +89%
Price: $0.000000^*
Shares after: 60,948
Date: 13 May 2026
Ownership: Direct

DTI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 118,252
Date: 13 May 2026
Ownership: by Oak Stream Investors II, Ltd.
Footnotes: F1

DTI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 458,737
Date: 13 May 2026
Ownership: by JDF Long Term Trust
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

DTI transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -28,626
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 28,626
Exercise price
Footnotes: F3, F4

DTI holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 23,438
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount
Exercise price
Footnotes: F3, F5

DTI holding Derivative

Stock Option (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 57,059
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount
Exercise price
Footnotes: F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

The Reporting Person disclaims any beneficial ownership of any shares of common stock held by Oak Stream Investors II, Ltd., other than his pecuniary interest therein.

Footnote F2

The Reporting Person is the trustee of JDF Long Term Trust ("JDF"). The Reporting Person may be deemed to have voting power and dispositive power over the shares held by JDF.

Footnote F3

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Footnote F4

The restricted stock units vested 100% on May 13, 2026, the one-year anniversary of the grant date.

Footnote F5

The restricted stock units vest 100% on April 28, 2027, the one-year anniversary of the grant date.

Footnote F6

All shares of common stock subject to stock options held by the Reporting Person are vested. The stock options were received in exchange for stock options to purchase 250,000 shares of common stock of Drilling Tools International Holdings, Inc. ("Legacy DTI") for $0.85 per share in connection with the Issuer's business combination with Legacy DTI.