| Summary of Warrants Outstanding |
As of June 30, 2026 and December 31, 2025, outstanding and exercisable warrants consisted of the following:
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Issuance Date |
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Term (years) |
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Exercise Price |
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Warrants Outstanding and Exercisable at December 31, 2025 |
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Warrants Outstanding and Exercisable at June 30, 2026 |
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Contractual
life remaining (years) |
SVB Warrants |
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January 20, 2019 |
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10 |
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$ |
4,848.80 |
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92 |
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92 |
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2.59 |
September 2023 Warrants |
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September 20, 2023 |
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5.5 |
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$ |
56.43 |
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34,599 |
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34,599 |
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2.72 |
September 2023 Placement Agent Warrants |
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September 20, 2023 |
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5 |
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$ |
72.2600 |
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2,075 |
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2,075 |
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2.22 |
January 2024 Common Stock Warrant |
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January 9, 2024 |
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5 |
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$ |
12.98 |
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13,636 |
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13,636 |
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2.53 |
January 2024 Pre-Funded Warrant |
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January 9, 2024 |
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Perpetual |
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$ |
0.11 |
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42,864 |
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42,864 |
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* |
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August 2025 Pre-Funded Warrant |
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August 20, 2025 |
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Perpetual |
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$ |
0.11 |
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185,528 |
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185,528 |
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* |
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September 2025 Pre-Funded Warrant |
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September 25, 2025 |
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Perpetual |
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$ |
0.11 |
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2,318,657 |
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1,743,760 |
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* |
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December 2025 Pre-Funded Warrant |
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December 12, 2025 |
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Perpetual |
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$ |
0.11 |
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927,643 |
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927,643 |
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* |
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February 2026 Pre-Funded Warrants |
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February 26, 2026 |
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Perpetual |
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$ |
0.11 |
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— |
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1,088,067 |
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* |
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March 2026 Pre-Funded Warrants |
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March 12, 2026 |
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Perpetual |
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$ |
0.11 |
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— |
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371,057 |
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* |
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June 2026 Pre-Funded Warrants |
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June 10, 2026 |
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Perpetual |
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$ |
0.01 |
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— |
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3,025,000 |
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* |
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Warrants outstanding |
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3,525,094 |
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7,434,321 |
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Weighted Average Strike Price |
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$ |
0.44 |
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Weighted Average Remaining Life (years) |
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2.65 |
* Indicates the perpetual warrants that are excluded from the weighted average remaining contractual life (years) calculation.
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