SM · SM Energy Co

The shares were purchased in multiple transactions at prices ranging from $36.85 to $37.15, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of 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 ranges set forth herein.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2027. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

On July 23, 2026, 16,917 shares of the Issuer's common stock were issued to the Reporting Person under the terms of a performance share unit ("PSU") award, based on the determination by the Compensation Committee of the Board of Directors of the Issuer regarding achievement of time-based vesting provisions and specific performance criteria that were not tied solely to the market price of the Issuer's common stock. The PSUs were granted to the Reporting Person on July 1, 2023, and represented the contingent right to receive between 0% to 200% of that number of shares of the Issuer's common stock based on the achievement of the vesting and performance criteria over a three-year performance period. The PSUs were fully vested on July 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2027. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2027. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2027. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in six equal biannual installments beginning January 1, 2027. The vested shares will be issued to the Reporting Person on the earlier of such Reporting Person's retirement from the Issuer or July 1 of the applicable year, at which time all restrictions on the vested shares will lapse.

On July 23, 2026, 7,520 shares of the Issuer's common stock were issued to the Reporting Person under the terms of a performance share unit ("PSU") award, based on the determination by the Compensation Committee of the Board of Directors of the Issuer regarding achievement of time-based vesting provisions and specific performance criteria that were not tied solely to the market price of the Issuer's common stock. The PSUs were granted to the Reporting Person on July 1, 2023, and represented the contingent right to receive between 0% to 200% of that number of shares of the Issuer's common stock based on the achievement of the vesting and performance criteria over a three-year performance period. The PSUs were fully vested on July 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in six equal biannual installments beginning January 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal installments on September 9, 2025, July 1, 2026 and July 1, 2027. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vested in three equal annual installments beginning on July 1, 2024. The vested shares were issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares lapsed.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in six equal biannual installments beginning January 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2025. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal installments on September 9, 2025, July 1, 2026 and July 1, 2027. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2025. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning July 1, 2025. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning July 1, 2025. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vested in three equal annual installments beginning on July 1, 2024. The vested shares were issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares lapsed.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2025. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vested in three equal annual installments beginning on July 1, 2024. The vested shares were issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares lapsed.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2025. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vested in three equal annual installments beginning on July 1, 2024. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vested in three equal annual installments beginning on July 1, 2024. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vests in three equal annual installments beginning on July 1, 2026. The vested shares will be issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares will lapse.

Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock unit grant vested in three equal annual installments beginning on July 1, 2024. The vested shares were issued to the Reporting Person on the vesting dates, at which time all restrictions on the vested shares lapsed.

The Reporting Person purchased 622 shares of the Issuer's common stock on June 30, 2026, through the Issuer's Employee Stock Purchase Plan.

The Reporting Person purchased 1,309 shares of the Issuer's common stock on June 30, 2026, through the Issuer's Employee Stock Purchase Plan.

The Reporting Person purchased 190 shares of the Issuer's common stock on June 30, 2026, through the Issuer's Employee Stock Purchase Plan.