STEM · Stem, Inc. · Insider Trading

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the vesting of RSUs on September 26, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's common stock.

On September 26, 2022, the Reporting Person was granted 1,217 RSUs vesting in four equal annual installments, the fourth of which vested on September 26, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

On June 4, 2025, the reporting person was granted 7,486 RSUs vesting 100% on August 7, 2026.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Each restricted stock unit ("RSU") converted into a share of common stock on a one-for-one basis.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on July 17, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On July 17, 2025, the Reporting Person was granted 6,750 PSUs, 3,375 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on June 30, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on June 30, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on June 30, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of PSUs on June 30, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On July 28, 2025, the Reporting Person was granted 10,000 PSUs, 5,000 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On July 28, 2025, the Reporting Person was granted 10,000 PSUs, 5,000 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On July 28, 2025, the Reporting Person was granted 10,000 PSUs, 5,000 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On June 30, 2025, the Reporting Person was granted 5,500 PSUs, 2,750 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On June 30, 2025, the Reporting Person was granted 5,500 PSUs, 2,750 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On June 30, 2025, the Reporting Person was granted 16,250 PSUs, 8,125 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Each performance stock unit ("PSU") represented a contingent right to receive one share of the Issuer's common stock if the volume-weighted average price of the Issuer's common stock for any consecutive sixty (60) trading-day period equaled or exceeded $17.60 (the "Performance Metric") during a performance period ending on June 30, 2028 (the "Performance Period").

On June 30, 2025, the Reporting Person was granted 5,500 PSUs, 2,750 of which vested on June 30, 2026 following the Issuer's achievement of the Performance Metric during the Performance Period.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

On June 3, 2026, the Reporting Person was granted 12,168 RSUs vesting 100% on June 3, 2027.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 18, 2025.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of restricted stock units on March 7, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of restricted stock units on March 7, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of restricted stock units on March 7, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.

Represents shares of common stock automatically sold to cover the reporting person's tax liability in connection with the settlement of restricted stock units on March 7, 2026. This "sell to cover" transaction does not represent a discretionary trade by the reporting person.