Robert Wayne Prejean - 28 Feb 2026 Form 4/A - Amendment Insider Report for Drilling Tools International Corp (DTI)

Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4/A - Amendment
Accepted by SEC
03 Aug 2026, 16:05:43 UTC
Original report date
12 Mar 2026
Prior SEC filing
12 Mar 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Robert Wayne Prejean

Key filing fact

Robert Wayne Prejean filed Form 4/A - Amendment for Drilling Tools International Corp (DTI) on 03 Aug 2026.

Key facts

  • This page summarizes Robert Wayne Prejean's Form 4/A - Amendment filing for Drilling Tools International Corp (DTI).
  • 1 reported transaction and 5 derivative rows are listed below.
  • Accepted by SEC: 03 Aug 2026, 16:05.

Change

  • Previous filing in this sequence was filed on 12 Mar 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/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0001981986 Primary reporting owner

Prejean Robert Wayne

Relationship
Chief Executive Officer, Director
Address
C/O DRILLING TOOLS INTERNATIONAL CORP., 10370 RICHMOND AVENUE, SUITE 1000, HOUSTON
Signature
/s/ Robert Wayne Prejean
Signature date
03 Aug 2026

Reported non-derivative transactions

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

DTI transaction

Common Stock

Tax liability

Transaction value
Shares
-18,543
Change %
-3.6%
Price
$0.000000*
Shares after
491,076
Date
28 Feb 2026
Ownership
Direct

Reported derivative securities

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

DTI holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
213,270
Date
28 Feb 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Exercise price
Footnotes
F1, F2
DTI holding Derivative

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
85,721
Date
28 Feb 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Exercise price
Footnotes
F1, F3
DTI holding Derivative

Performance Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
257,162
Date
28 Feb 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Exercise price
Footnotes
F4, F5
DTI holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,000,000
Date
28 Feb 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Exercise price
Footnotes
F6
DTI holding Derivative

Stock Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,201,872
Date
28 Feb 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Exercise price
Footnotes
F7
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

Each RSU represents a contingent right to receive one share of the Company common stock.

Footnote F2

The RSUs vest in substantially equal installments on each of the first four (4) anniversaries of the grant date, February 28, 2025.

Footnote F3

On February 27, 2026, the reporting person was granted 85,721 RSUs under the Company's 2023 Omnibus Incentive Plan, as may be amended from time to time (the "Plan"), pursuant to the 2026 long-term incentive program approved by the Board of Directors (the "2026 LTIP"). The RSUs vest in substantially equal installments on each of the first three (3) anniversaries of the grant date, subject to continued service.

Footnote F4

Each performance stock unit ("PSU") represents a contingent right to receive one share of the Company's common stock.

Footnote F5

On February 27, 2026, the reporting person was granted 257,162 PSUs under the Plan, pursuant to the 2026 LTIP. The PSUs are subject to the achievement of performance conditions based on EBITDA, weighted at 100%, with annual reset over a three-year performance vesting period. Achievement at threshold results in a 50% payout opportunity, while achievement at maximum results in a 200% payout opportunity.

Footnote F6

Two-thirds (2/3) of the stock options have vested in substantially equal installments on each of the first two (2) anniversaries of the grant date, with the remaining one-third (1/3) scheduled to vest on the third (3rd) anniversary of the grant date, February 14, 2024.

Footnote F7

All shares of common stock subject to the stock options are vested.

SEC remarks

The Reporting Person may be deemed to have voting power and dispositive power over the shares held by Robjon Holdings, L.P. ("Robjon"). The Reporting Person is the President, Manager and sole owner of Robjon LLC, Robjon's general partner. The Reporting Person disclaims any beneficial ownership of any shares of common stock held by Robjon, other than his pecuniary interest therein.; On March 12, 2026, the reporting person filed a Form 4 which inadvertently reported that, following the vesting of restricted stock units ("RSUs"), he retained 71,090 shares of common stock. In fact, as reported in this amendment, 18,543 shares were withheld by Drilling Tools International Corp (the "Company") to pay for taxes. The corrected amount is reflected in this amendment.

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