III · Information Services Group Inc.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

Includes 253 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

Represents a grant of RSUs that may be earned based on achievement of certain market price goals, which will be measured at the average closing price of the issuer's common stock over the forty-five-trading-day period prior to and including the third anniversary of the date of grant. 50% of the number of RSUs reported above will be earned if the measured market price is $5.25, 75% of the RSUs will be earned if the measured market price is $6.00 and 100% of the RSUs will be earned if the measured market price is $7.00 or above, with interpolation of the number of earned RSUs between these share price points. In addition, if the measured market price meets or exceeds $7.00 at any time before and including the third anniversary of the award, 100% of the RSUs will be earned. Unearned RSUs will be canceled. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.25 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of April 1, 2026.

Includes 1,084 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of restricted stock units issued in accordance with Rule 16b-3.

Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2027.

Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2026.

Includes 540 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2027.

Includes 2,187 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

Represents restricted stock units (RSUs) granted to the reporting pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest 100% on March 13, 2027.

Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

Grant of restricted stock units which vest in 3 equal installments on each of the first, second and third anniversaries of December 9, 2025 (or earlier in the event of a change of control of ISG or such director's death or disability).

Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

Represents a sale of shares of common stock to satisfy tax obligations in connection with vesting of restricted stock units and deferred receipt of the related shares of common stock.

The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

The sale was made pursuant to Rule 144 under the Securities Act of 1933, as previously disclosed in a Form 144 filed by the reporting person on November 6, 2025. The transactions were effectuated for estate planning and tax purposes,

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

Represents a sale of shares of common stock to satisfy tax obligations.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents a grant of RSUs that may be earned based on achievement of certain market price goals, which will be measured at the average closing price of the issuer's common stock over the forty-five-trading-day period prior to and including the third anniversary of the date of grant. 50% of the number of RSUs reported above will be earned if the measured market price is $5.00, 75% of the RSUs will be earned if the measured market price is $6.00 and 100% of the RSUs will be earned if the measured market price is $7.00 or above, with interpolation of the number of earned RSUs between these share price points. In addition, if the measured market price meets or exceeds $7.00 at any time before and including the third anniversary of the award, 100% of the RSUs will be earned. Unearned RSUs will be canceled. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of June 2, 2025.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of June 2, 2025.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of June 2, 2025.

Includes 248 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

Represents a grant of RSUs that may be earned based on the achievement of market price goals, which will be measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $5.00 or above. If this measured market price is not achieved by the fourth anniversary of the award, these RSUs will be forfeited. Market price goals are subject to adjustment for stock splits and certain other corporate events. Once determined, any such earned RSUs will be fully vested.

Represents restricted stock units (RSUs) granted to the reporting person pursuant to the Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan, which will vest in 4 equal installments on each of the first, second, third and fourth anniversaries of June 2, 2025.

Includes 966 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.