BOOM · DMC Global Inc.

Each RSU represents the right to receive the Fair Market Value of one Share.

On July 1, 2026, one-third of the restricted stock units ("RSUs") previously granted to the reporting person on July 1, 2025, vested and were settled in cash. No shares of common stock of the Issuer ("Shares") were issued upon settlement, and the reporting person received a cash payment equal to the closing price ("Fair Market Value") of a Share for each vested RSU.

Each RSU represents the right to receive the Fair Market Value of one Share.

On July 1, 2026, one-third of the restricted stock units ("RSUs") previously granted to the reporting person on July 1, 2025, vested and were settled in cash. No shares of common stock of the Issuer ("Shares") were issued upon settlement, and the reporting person received a cash payment equal to the closing price ("Fair Market Value") of a Share for each vested RSU.

Reflects cash settlement of RSUs.

On July 1, 2026, one-third of the restricted stock units ("RSUs") previously granted to the reporting person on July 1, 2025, vested and were settled in cash. No shares of common stock of the Issuer ("Shares") were issued upon settlement, and the reporting person received a cash payment equal to the closing price ("Fair Market Value") of a Share for each vested RSU.

Reflects cash settlement of RSUs.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

Each Restricted Stock Unit ("RSU") represents the right to receive one share of the common stock of the Issuer.

On March 14, 2023, 2,714 Restricted Stock Units ("RSUs") were granted to the reporting person and 1,810 RSUs vested on March 14, 2025, and the remaining 904 RSUs vested on March 14, 2026.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Each Restricted Stock Unit ("RSU") represents the right to receive one share of the common stock of the Issuer.

On March 14, 2023, 10,623 Restricted Stock Units ("RSUs") were granted to the reporting person and 3,541 RSUs vested on March 14, 2024, 3,541, RSUs vested on March 14, 2025, and the remaining 3,541 RSUs vested on March 14, 2026.

Each Performance Share Unit ("PSU") represents the contingent right to receive one share of the Issuer's common stock based on certain vesting conditions.

The number of PSUs that will vest and the number of shares of Issuer's common stock that will be awarded, if any, is contingent on the Issuer's cumulative Adjusted EBITDA as compared to target Adjusted EBITDA and the Issuer's cumulative Adjusted Free Cash Flow as compared to target Adjusted Free Cash Flow achieved over the three year performance period from January 1, 2026 through December 31, 2028, with potential to earn a number of shares of common stock between 0% and 200% of the number of target PSUs awarded.

Each Performance Share Unit ("PSU") represents the contingent right to receive one share of the Issuer's common stock based on certain vesting conditions.

The number of PSUs that will vest and the number of shares of Issuer's common stock that will be awarded, if any, is contingent on the Issuer's cumulative Adjusted EBITDA as compared to target Adjusted EBITDA and the Issuer's cumulative Adjusted Free Cash Flow as compared to target Adjusted Free Cash Flow achieved over the three year performance period from January 1, 2026 through December 31, 2028, with potential to earn a number of shares of common stock between 0% and 200% of the number of target PSUs awarded.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Each Restricted Stock Unit ("RSU") represents the right to receive one share of the common stock of the Issuer.

On February 28, 2024, 13,392 RSUs were granted to the reporting person and 4,464 RSUs vested on February 28, 2025 and 4,464 RSUs vested on February 28, 2026. The remaining 4,464 RSUs will vest on February 28, 2027.

Each Restricted Stock Unit ("RSU") represents the right to receive one share of the common stock of the Issuer.

On February 28, 2024, 3,455 RSUs were granted to the reporting person, and 2,304 of these RSUs vested on February 28, 2026. The remaining RSUs will vest on February 28, 2027.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Each Restricted Stock Unit ("RSU") represents the right to receive one share of the common stock of the Issuer.

On February 26, 2025, 25,457 RSUs were granted to the reporting person and 8,486 RSUs vested on February 26, 2026. Of the remaining RSUs, 8,486 will vest on February 26, 2027, and 8,485 will vest on February 26, 2028.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.00 to $6.015, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.80 to $6.14, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.

Each Restricted Stock Unit ("RSU") represents the right to receive the Fair Market Value (as defined below) of one share of the common stock of the Issuer (a "Share").

Subject to the terms of the applicable award agreement, one-third of these RSUs will vest on each of the first, second and third anniversaries of the grant date and will be settled in cash in an amount equal to the closing price ("Fair Market Value") of one Share.

Each Performance Share Unit ("PSU") represents the contingent right to receive one Share based on certain vesting conditions.

Subject to the terms of the applicable award agreement, the number of PSUs that will vest and the number of Shares that will be awarded, if any, are contingent on the Issuer's cumulative Adjusted EBITDA and cumulative Adjusted Free Cash Flow, each as compared to target amounts, achieved over the three year period from 2025 through 2027.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as that meeting is at least 50 weeks after the prior annual meeting.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as the date of the next annual meeting is no earlier than April 29, 2026.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as the date of the next annual meeting is no earlier than April 29, 2026.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as the date of the next annual meeting is no earlier than April 29, 2026.

The award is subject to time-based vesting restrictions. The restrictions will lapse on the earlier of (i) the first anniversary of the grant date or (ii) the date of the next annual stockholder meeting, so long as the date of the next annual meeting is no earlier than April 29, 2026.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.

Represents withholding of shares to satisfy tax obligations upon the vesting of the underlying award.