| 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 |
|
Term
(years) |
|
|
Exercise
Price |
|
|
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 |
|
January 20, 2019 |
|
|
10 |
|
|
$ |
4,848.80 |
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|
92 |
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|
92 |
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|
2.59 |
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| September 2023 Warrants |
|
September 20, 2023 |
|
|
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 |
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| September 2023 Placement Agent Warrants |
|
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 |
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| 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 |
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| January 2024 Pre-Funded Warrant |
|
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 |
|
|
$ |
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 |
|
September 25, 2025 |
|
|
Perpetual |
|
|
$ |
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 |
|
February 26, 2026 |
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Perpetual |
|
|
$ |
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 |
|
March 12, 2026 |
|
|
Perpetual |
|
|
$ |
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 |
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| * |
Indicates the perpetual warrants that are excluded from the weighted average remaining contractual life (years) calculation. |
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As of December 31, 2025, 2024, and 2023, outstanding and exercisable warrants consisted of the following:
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Issuance
Date |
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|
Term
(years) |
|
|
Exercise
Price |
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|
Warrants
Outstanding
and
Exercisable at
December 31,
2023 |
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Warrants
Outstanding
and
Exercisable at
December 31,
2024 |
|
|
Warrants
Outstanding
and
Exercisable at
December 31,
2025 |
|
|
Contractual
life
remaining
(years) |
|
| SVB Warrants |
|
|
January 20, 2019 |
|
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|
10 |
|
|
$ |
4,848.80 |
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|
92 |
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|
92 |
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|
92 |
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2.08 |
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| 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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34,599 |
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3.22 |
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| September 2023 Placement Agent Warrants |
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September 20, 2023 |
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5 |
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$ |
72.26 |
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2,075 |
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2,075 |
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2,075 |
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2.72 |
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| 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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— |
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13,636 |
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13,636 |
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3.02 |
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| 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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— |
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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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— |
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— |
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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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— |
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— |
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2,318,657 |
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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 |
|
|
$ |
0.11 |
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— |
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— |
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927,643 |
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* |
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| Warrants outstanding |
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36,766 |
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93,266 |
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3,525,094 |
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Weighted Average
Strike Price |
|
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$ |
0.88 |
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Weighted Average Remaining Life
(years) |
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3.14 |
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| * |
Indicates the perpetual warrants that are excluded from the weighted average remaining contractual life (years) calculation. |
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