| Schedule of common stock warrant activity |
The following table presents the common stock warrant activity: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Issue Date | | Warrant Type | | Term Date | | Exercise Price | Balance December 31, 2025 | | Issued | | Exercised | | Expired | | Balance June 30, 2026 | | October 2020 | | Dealer Manager | | April 2026 | | $ | 5,174.40 | | | 34 | | — | | — | | (34) | | — | | February 2021 | | Private Placement Agreement | | August 2026 | | 5,318.40 | | | 540 | | — | | — | | — | | 540 | | February 2021 | | Dealer Manager | | August 2026 | | 6,835.40 | | | 136 | | — | | — | | — | | 136 | | March 2021 | | Dealer Manager | | March 2026 | | 6,000.00 | | | 60 | | — | | — | | (60) | | — | | November 2022 | | Dealer Manager | | November 2027 | | 525.00 | | | 892 | | — | | — | | — | | 892 | | April 2023 | | Series C | | October 2028 | | 194.40 | | | 7,142 | | — | | — | | — | | 7,142 | | April 2023 | | Dealer Manager | | April 2028 | | 262.50 | | | 534 | | — | | — | | — | | 534 | | August 2023 | | Dealer Manager | | August 2028 | | 108.04 | | | 1,222 | | — | | — | | — | | 1,222 | | November 2023 | | Series D | | November 2028 | | 13.00 | | | 151,026 | | — | | — | | — | | 151,026 | | November 2023 | | Dealer Manager | | November 2028 | | 16.25 | | | 28,844 | | — | | — | | — | | 28,844 | | August 2024 | | Series F-1 | | August 2029 | | 4.35 | | | 319,434 | | — | | — | | — | | 319,434 | | August 2024 | | Series F-2 | | February 2026 | | 4.35 | | | 316,852 | | — | | — | | (316,852) | | — | | August 2024 | | Dealer Manager | | August 2029 | | 5.75 | | | 25,275 | | — | | — | | — | | 25,275 | | March 2025 | | Dealer Manager | | September 2026 | | 3.625 | | | 18,736 | | — | | — | | — | | 18,736 | | | | | | | | | | | | | | | | | | | July 2025 | | Dealer Manager | | October 2026 | | 3.781 | | | 72,944 | | — | | — | | — | | 72,944 | | August 2025 | | Series I | | November 2026 | | 5.25 | | | 2,188,308 | | — | | — | | — | | 2,188,308 | | August 2025 | | Dealer Manager | | November 2026 | | 5.4219 | | | 72,944 | | — | | — | | — | | 72,944 | | | | | | | | | 3,204,923 | | — | | — | | (316,946) | | 2,887,977 |
| | | | | | | | | | | | | | | | | | | Shares | | Weighted Average Exercise Price Per Share | | Weighted Average Remaining Contractual Term (years) | | Outstanding as of December 31, 2025 | 3,204,923 | | | $ | 7.50 | | | 1.2 | | Issued | — | | | — | | | — | | | Exercised | — | | | — | | | — | | | Expired | (316,946) | | | 6.04 | | | — | | | Outstanding as of June 30, 2026 | 2,887,977 | | | 7.66 | | | 0.9 |
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