DTI

SEC source: 0001193125-26-015295 · ownership.xml · nonDerivative · entry 1

Domino Michael Wayne Jr. · CIK 0001981953 · President, DTR Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,458,050

F1 · kind: This transaction was completed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 17, 2025.

SEC source: 0001193125-25-319434 · ownership.xml · nonDerivative · entry 1

Domino Michael Wayne Jr. · CIK 0001981953 · President, DTR Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,460,133

F1 · kind: This transaction was completed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 17, 2025.

SEC source: 0001193125-25-314145 · ownership.xml · nonDerivative · entry 5

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MV Partners I, LP.

Disclosed balance after: 0

F3 · ownership.nature: On December 4, 2025, MV Partners made a distribution of shares of Common Stock of the Company to one of MV Partners' limited partners. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interests therein.

SEC source: 0001193125-25-322652 · ownership.xml · nonDerivative · entry 1

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by JDF Long Term Trust

Disclosed balance after: 177,072

F1 · kind: 32,606 shares of Drilling Tools International Corporation's (DTI") common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

F2 · ownership.nature: 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.

SEC source: 0001193125-25-322653 · ownership.xml · nonDerivative · entry 1

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,510

F1 · kind: 1,959 shares of Drilling Tools International Corporation's ("DTI") common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-322651 · ownership.xml · nonDerivative · entry 1

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,303

F1 · kind: 19,592 shares of Drilling Tools International Corporation's ("DTI") common stock received as a result of HHEP-Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-314145 · ownership.xml · nonDerivative · entry 4

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MV Partners, Inc.

Disclosed balance after: 39,944

F2 · ownership.nature: On November 28, 2025, MV Partners I, LP ("MV Partners") made a distribution of shares of common stock, par value $0.001 per share (the "Common Stock") of Drilling Tools International Corporation (the "Company") to MV Partners' limited partners and to MV Partners, Inc. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners I. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interests therein.

SEC source: 0001193125-25-314145 · ownership.xml · nonDerivative · entry 3

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MV Partners I, LP

Disclosed balance after: 144,000

F2 · ownership.nature: On November 28, 2025, MV Partners I, LP ("MV Partners") made a distribution of shares of common stock, par value $0.001 per share (the "Common Stock") of Drilling Tools International Corporation (the "Company") to MV Partners' limited partners and to MV Partners, Inc. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners I. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interests therein.

SEC source: 0001193125-25-314145 · ownership.xml · nonDerivative · entry 2

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MV Partners I, LP

Disclosed balance after: 183,944

F2 · ownership.nature: On November 28, 2025, MV Partners I, LP ("MV Partners") made a distribution of shares of common stock, par value $0.001 per share (the "Common Stock") of Drilling Tools International Corporation (the "Company") to MV Partners' limited partners and to MV Partners, Inc. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners I. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interests therein.

SEC source: 0001193125-25-314145 · ownership.xml · nonDerivative · entry 1

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MV Partners I, LP

Disclosed balance after: 327,944

F1 · balance_after: A scrivener's error in the reporting person's prior Form 4 filed on September 16, 2025, resulted in a 300-share understatement of the amount of shares beneficially owned by MV Partners I, LP prior to the distributions reported herein. The amounts reported in this Form 4 reflect the corrected holdings.

F2 · ownership.nature: On November 28, 2025, MV Partners I, LP ("MV Partners") made a distribution of shares of common stock, par value $0.001 per share (the "Common Stock") of Drilling Tools International Corporation (the "Company") to MV Partners' limited partners and to MV Partners, Inc. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners I. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interests therein.

SEC source: 0001193125-25-285014 · ownership.xml · nonDerivative · entry 1

Domino Michael Wayne Jr. · CIK 0001981953 · President, DTR Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,462,216

F1 · kind: This transaction was completed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 17, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2.50 to $2.52, inclusive. The reporting person undertakes to Drilling Tools International Corporation, any security holder of Drilling Tools International Corporation, or the staff of the Securities and Exchange Commission, upon request, to provide full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote 2 to this Form 4.

SEC source: 0001193125-25-250296 · ownership.xml · nonDerivative · entry 1

Domino Michael Wayne Jr. · CIK 0001981953 · President, DTR Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,464,299

F1 · kind: This transaction was completed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 16, 2025.

F2 · price: This transaction was executed at a price of $2.50.

SEC source: 0001193125-25-206416 · ownership.xml · nonDerivative · entry 1

Domino Michael Wayne Jr. · CIK 0001981953 · President, DTR Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,466,382

F1 · kind: This transaction was completed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 16, 2025.

F2 · price: This transaction was executed in multiple trades, both at a price of $2.50.

SEC source: 0001193125-25-204969 · ownership.xml · nonDerivative · entry 5

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by JDF Long Term Trust

Disclosed balance after: 144,466

F3 · kind: 36,227 shares of DTI's common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

F4 · ownership.nature: 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.

SEC source: 0001193125-25-204974 · ownership.xml · nonDerivative · entry 4

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,551

F3 · kind: 2,177 shares of DTI's common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-204973 · ownership.xml · nonDerivative · entry 5

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 120,711

F3 · kind: 21,768 shares of DTI's common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-204969 · ownership.xml · nonDerivative · entry 4

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by JDF Long Term Trust

Disclosed balance after: 108,239

F2 · kind: 63,939 shares of DTI's common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

F4 · ownership.nature: 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.

SEC source: 0001193125-25-204974 · ownership.xml · nonDerivative · entry 3

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,374

F2 · kind: 3,842 shares of DTI's common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-204973 · ownership.xml · nonDerivative · entry 4

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,943

F2 · kind: 38,417 shares of DTI's common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-204969 · ownership.xml · derivative · entry 9

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,712 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F9 · derivative.exercise_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

F9 · derivative.expiration_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204969 · ownership.xml · nonDerivative · entry 3

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,322

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-25-204974 · ownership.xml · derivative · entry 6

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,712 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of DTI's common stock.

F6 · derivative.exercise_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

F6 · derivative.expiration_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204974 · ownership.xml · nonDerivative · entry 2

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,532

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-25-204973 · ownership.xml · derivative · entry 8

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,712 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of DTI's common stock.

F7 · derivative.exercise_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

F7 · derivative.expiration_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204973 · ownership.xml · nonDerivative · entry 3

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,526

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-25-204976 · ownership.xml · derivative · entry 5

Patterson Thomas Monroe · CIK 0001355893 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,712 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F4 · derivative.exercise_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

F4 · derivative.expiration_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204976 · ownership.xml · nonDerivative · entry 2

Patterson Thomas Monroe · CIK 0001355893 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,457

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-25-204971 · ownership.xml · derivative · entry 7

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 13,712 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F7 · derivative.exercise_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

F7 · derivative.expiration_date: The restricted stock units vested 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204971 · ownership.xml · nonDerivative · entry 3

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,322

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-25-204969 · ownership.xml · derivative · entry 8

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,626

Underlying: Common Stock · 28,626 shares

Expires not disclosed

F6 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F8 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F8 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204974 · ownership.xml · derivative · entry 5

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,626

Underlying: Common Stock · 28,626 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of DTI's common stock.

F5 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F5 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204973 · ownership.xml · derivative · entry 7

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,626

Underlying: Common Stock · 28,626 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of DTI's common stock.

F6 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F6 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204976 · ownership.xml · derivative · entry 4

Patterson Thomas Monroe · CIK 0001355893 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,626

Underlying: Common Stock · 28,626 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F3 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F3 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204971 · ownership.xml · derivative · entry 6

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,626

Underlying: Common Stock · 28,626 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F6 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F6 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0001193125-25-204967 · ownership.xml · derivative · entry 1

Pope Trent · CIK 0002050524 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

F2 · derivative.expiration_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

SEC source: 0001193125-25-204972 · ownership.xml · derivative · entry 1

Rodriguez Aldo · CIK 0002050731 · Vice President of Sales

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,000

Underlying: Common Stock · 102,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

F2 · derivative.expiration_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

SEC source: 0001193125-25-204968 · ownership.xml · derivative · entry 1

Stephenson David · CIK 0002051018 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common Stock · 30,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

F2 · derivative.expiration_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

SEC source: 0001193125-25-204965 · ownership.xml · derivative · entry 1

Johnson David Richard · CIK 0001982629 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,855

Underlying: Common Stock · 123,855 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

F2 · derivative.expiration_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

SEC source: 0001193125-25-204978 · ownership.xml · derivative · entry 1

Domino Michael Wayne Jr. · CIK 0001981953 · President, DTR Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,106

Underlying: Common Stock · 101,106 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

F2 · derivative.expiration_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

SEC source: 0001193125-25-204966 · ownership.xml · derivative · entry 1

Prejean Robert Wayne · CIK 0001981986 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 284,360

Underlying: Common Stock · 284,360 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

F2 · derivative.expiration_date: The Restricted Stock Units vest in substantially equal installments on each of the first four (4) anniversaries of the grant date.

SEC source: 0000950170-24-131465 · ownership.xml · nonDerivative · entry 1

Vermillion Charles Richard Jr. · CIK 0001981923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MV Partners I LP

Disclosed balance after: 363,944

F1 · kind: On November 20, 2024, MV Partners I, LP ("MV Partners") made a distribution of shares of common stock, par value $0.001 per share (the "Common Stock") of Drilling Tools International Corporation (the "Company") to one of MV Partners' limited partners. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interest therein.

F1 · ownership.nature: On November 20, 2024, MV Partners I, LP ("MV Partners") made a distribution of shares of common stock, par value $0.001 per share (the "Common Stock") of Drilling Tools International Corporation (the "Company") to one of MV Partners' limited partners. The Reporting Person is the sole owner and Chairman of the Board of Directors of MV Partners, Inc., the general partner of MV Partners. Mr. Vermillion disclaims any beneficial ownership of any shares of Common Stock held by MV Partners, other than his pecuniary interest therein.

SEC source: 0001193125-25-204969 · ownership.xml · nonDerivative · entry 2

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by JDF Long Term Trust

Disclosed balance after: 44,300

F1 · kind: 44,300 shares of Drilling Tools International Corporation's ("DTI") common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

F4 · ownership.nature: 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.

SEC source: 0001193125-25-204974 · ownership.xml · nonDerivative · entry 1

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,820

F1 · kind: 2,820 shares of Drilling Tools International Corporation's ("DTI") common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0001193125-25-204973 · ownership.xml · nonDerivative · entry 2

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,814

F1 · kind: 28,2024 shares of Drilling Tools International Corporation's ("DTI") common stock received as a result of HHEP Directional, L.P.'s pro rata distribution of shares to its limited partners for no consideration.

SEC source: 0000950170-24-061070 · ownership.xml · derivative · entry 2

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,712

Underlying: Common Stock · 13,712 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F3 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F3 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0000950170-24-061070 · ownership.xml · derivative · entry 1

FURST JACK D · CIK 0001062103 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,610

Underlying: Common Stock · 18,610 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The restricted stock units vest 100% on the grant date.

F2 · derivative.expiration_date: The restricted stock units vest 100% on the grant date.

SEC source: 0000950170-24-061071 · ownership.xml · derivative · entry 1

Crofford Curt L. · CIK 0001499152 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,712

Underlying: Common Stock · 13,712 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F2 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0000950170-24-061068 · ownership.xml · derivative · entry 2

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,712

Underlying: Common Stock · 13,712 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F3 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F3 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

SEC source: 0000950170-24-061068 · ownership.xml · derivative · entry 1

Neuman Eric C · CIK 0001413613 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,610

Underlying: Common Stock · 18,610 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F2 · derivative.exercise_date: The restricted stock units vest 100% on the grant date.

F2 · derivative.expiration_date: The restricted stock units vest 100% on the grant date.

SEC source: 0000950170-24-061072 · ownership.xml · derivative · entry 2

Patterson Thomas Monroe · CIK 0001355893 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,712

Underlying: Common Stock · 13,712 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Drilling Tools International Corporation's common stock.

F3 · derivative.exercise_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.

F3 · derivative.expiration_date: The restricted stock units vest 100% upon the one-year anniversary of the grant date.