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股本结构

单位：万股
公告日期 2026-10-13 2026-08-04 2026-08-14 2026-05-15 2026-03-31 2026-03-31
证券总股本 10107.26 10084.96 6631.19 6585.69 6582.74 6520.20
普通股本 10107.26 10084.96 6631.19 6585.69 6582.74 6520.20
优先股 未披露 未披露 118.52 118.52 未披露 121.00
其他 未披露 未披露 未披露 未披露 未披露 未披露
变动日期 2026-10-06 2026-07-31 2026-06-30 2026-03-31 2026-03-02 2025-12-31
注释：中概股证券总股本=普通股股本/ 存托凭证比例

历史变动

公告日期 变动后普通股本（万股） 变动后优先股（万股） 变动原因 变动日期
2026-10-13 10107.26 未披露 定期报告 2026-10-06
2026-08-04 10084.96 未披露 定期报告 2026-07-31
2026-08-14 6631.19 118.52
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From March 31, 2026 to June 30, 2026 Exercise of common stock options Issuance of common stock
2026-06-30
2026-05-15 6585.69 118.52
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From December 31,2025 to March 31,2026 Series A 12% convertible preferred stock dividend Issuance of common stock from exercise of stock options Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense, net of shares forfeited to cover tax withholding Conversion of Series A preferred to common stock
2026-03-31
2026-03-31 6582.74 未披露 定期报告 2026-03-02
2026-03-31 6520.20 121.00
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From December 31, 2024 to December 31, 2025 Conversion of Series A convertible preferred to common stock Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants Issuance of common stock from exercise of stock options Issuance of common stock Stock-based compensation expense
2025-12-31
2025-11-14 6447.28 未披露 定期报告 2025-11-07
2025-10-22 6447.92 121.00 定期报告 2025-10-07
2025-11-14 6447.28 121.02
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From June 30, 2025 to September 30, 2025 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Exercise of common stock options Issuance of common stock
2025-09-30
2025-10-22 6230.81 121.00 定期报告 2025-09-22
2025-08-14 6406.03 121.02
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From March 31, 2025 to June 30, 2025 Conversion of Series A convertible preferred to common stock Exercise of common stock options Issuance of common stock
2025-06-30
2025-05-15 6329.16 123.52
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From December 31, 2024 to March 31, 2025 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense, net of shares forfeited to cover tax withholding
2025-03-31
2025-03-31 6318.05 未披露 定期报告 2025-03-03
2025-03-31 6316.82 123.50 定期报告 2025-02-28
2025-03-31 6315.72 123.52
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From December 31, 2023 to December 31, 2024 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants Issuance of common stock from exercise of stock options, net of shares withheld for exercise Issuance of common stock from restricted stock units Stock-based compensation expense
2024-12-31
2024-12-03 6230.81 126.00 定期报告 2024-11-25
2024-11-14 6276.18 未披露 定期报告 2024-11-08
2024-11-14 6230.81 123.52
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From June 30, 2024 to September 30, 2024 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend
2024-09-30
2024-08-13 6227.81 123.52
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From March 31, 2024 to June 30, 2024 Exercise of common stock options Exercise of common stock purchase warrants
2024-06-30
2024-05-15 6214.81 123.52
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From December 31, 2023 to March 31, 2024 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Exercise of stock options Stock-based compensation expense, net of shares forfeited to cover tax withholding
2024-03-31
2024-03-29 6190.37 未披露 定期报告 2024-02-29
2024-03-29 6185.29 123.50
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From December 31, 2022 to December 31, 2023 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Conversion of Series A Convertible Preferred to common Issuance of common stock from exercise of warrants Stock-based compensation expense
2023-12-31
2023-10-06 6184.87 126.00 定期报告 2023-10-10
2023-11-13 6184.87 126.02
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From June 30, 2023 to September 30, 2023 Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants Series A 12% convertible preferred stock dividend
2023-09-30
2023-05-15 5958.23 126.02
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From December 31, 2022 to March 31, 2023 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense
2023-03-31
2023-04-14 5946.20 126.00 定期报告 2023-03-15
2023-03-30 5944.37 未披露 定期报告 2023-02-28
2023-03-30 5942.60 126.00
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From December 31, 2021 to December 31, 2022 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Conversion of Series A Convertible Preferred to common Stock-based compensation expense
2022-12-31
2022-11-14 5942.60 126.02
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From June 30, 2022 to September 30, 2022 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend
2022-09-30
2022-08-15 5939.58 126.02
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From March 31, 2022 to June 30, 2022 Issuance of common stock from conversion of Series A convertible preferred stock
2022-06-30
2022-05-16 5938.85 130.27
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From December 31, 2021 to March 31, 2022 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense
2022-03-31
2022-03-31 5935.79 未披露 定期报告 2022-02-28
2022-03-31 5934.13 130.27
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From December 31, 2020 to December 31, 2021 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Issuance of common stock for warrant exercises Issuance of common stock for stock option exercises Stock-based compensation expense
2021-12-31
2021-11-15 5934.13 未披露 定期报告 2021-11-05
2021-10-12 5929.00 130.25 定期报告 2021-10-07
2021-11-15 5934.13 130.27
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From June 30, 2021 to September 30, 2021 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants and options
2021-09-30
2021-10-12 5929.00 未披露 定期报告 2021-09-01
2021-08-16 5927.50 130.27
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From March 31, 2021 to June 30, 2021 Issuance of common stock Issuance of common stock from exercise of warrants and options
2021-06-30
2021-05-17 5809.48 未披露 定期报告 2021-05-10
2021-05-17 5718.67 130.27
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From December 31, 2020 To March 31, 2021 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock for exercise of options Stock-based compensation expense
2021-03-31
2021-03-31 5715.60 未披露 定期报告 2021-02-28
2021-03-31 5707.71 130.25
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From December 31, 2019 to October 1, 2020 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Conversion of Series A Convertible Preferred to common Issuance of common stock for stock option exercises Stock-based compensation expense
2020-10-01
2020-11-09 5707.71 130.27
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From June 30, 2020 to September 30, 2020 Issuance of common stock for conversion of Series A 12% Convertible Preferred Stock Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock for conversion of Series A 12% Convertible Preferred Stock
2020-09-30
2020-08-10 5704.37 174.27
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From March 31, 2020 to June 30, 2020 Issuance of common stock
2020-06-30
2020-05-11 5702.92 132.77
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From December 31, 2019 to March 31, 2020 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock for exercise of options Stock-based compensation expense
2020-03-31
2020-03-16 5703.10 未披露 定期报告 2020-02-21
2020-03-16 5689.46 132.77
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From December 31, 2018 to December 31, 2019 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Conversion of Series B Convertible Preferred to common Issuance of common stock for warrant exercises Issuance of common stock for stock option exercises
2019-12-31
2019-11-12 5688.61 未披露 定期报告 2019-11-06
2019-10-17 5678.39 132.75 定期报告 2019-10-10
2019-11-12 5665.89 132.77
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from June 30, 2019 to September 30, 2019 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock
2019-09-30
2019-08-09 5663.13 未披露 定期报告 2019-08-06
2019-08-09 5659.13 132.77
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from March 31, 2019 to June 30,2019 Issuance of common stock Issuance of common stock for exercise of warrants and options
2019-06-30
2019-05-10 4559.44 132.77
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From December 31, 2018 to March 31, 2019 Issuance of common stock Conversion of Series B Convertible Preferred to common Issuance of common stock for exercise of warrants and options
2019-03-31
2019-03-06 4555.02 未披露 定期报告 2019-02-20
2019-03-06 4119.09 683.57
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From December 31, 2017 to December 31, 2018 Series A 12% convertible preferred stock dividend Series B-1 12% convertible preferred stock dividend Series B-2 12% convertible preferred stock dividend Series B-3 8% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Issuance of common stock for warrant exercises Issuance of common stock for services Issuance of common stock for stock option exercises Issuance of common stock from Series A conversion
2018-12-31
2018-11-13 4113.67 686.07 定期报告 2018-09-30
2018-08-14 4091.39 未披露 定期报告 2018-08-08
2018-08-14 4062.82 686.07 定期报告 2018-06-30
2018-05-11 3774.06 未披露 定期报告 2018-05-08
2018-05-11 3764.60 688.57 定期报告 2018-03-31
2018-04-11 3756.99 688.55 定期报告 2018-03-26
2018-03-29 3756.99 未披露 定期报告 2018-03-16
2018-03-29 3578.94 688.55
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from December 31, 2016 to December 31, 2017 Series A 12% convertible preferred stock dividend Series B-1 12% convertible preferred stock dividend Series B-2 12% convertible preferred stock dividend Series B-3 8% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Issuance of common stock and warrants in private placements Issuance of common stock for services Issuance of restricted common stock to directors
2017-12-31
2017-11-07 2939.66 688.55 定期报告 2017-10-16
2017-11-07 3563.87 688.57 定期报告 2017-09-30
2017-08-14 3505.17 未披露 定期报告 2017-08-07
2017-08-14 3496.58 688.57 定期报告 2017-06-30
2017-04-28 3465.96 未披露 定期报告 2017-04-15
2017-05-15 3467.07 688.57 定期报告 2017-03-31
2017-03-28 3406.48 未披露 定期报告 2017-03-09
2017-03-28 3291.29 688.57
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From December 31, 2015 to December 31, 2016 Reclassification of Series B-1 and B-2 convertible stock to stockholders’ equity upon elimination of redemption feature Issuance of Series B-3 8% convertible preferred stock Series A 12% convertible preferred stock dividend Series B-1 12% convertible preferred stock dividend Series B-2 12% convertible preferred stock dividend Series B-3 8% convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock and warrants in private placements Issuance of common stock Issuance of common stock upon vesting of stock grants to directors
2016-12-31
2016-11-10 2939.66 未披露 定期报告 2016-10-17
2016-11-08 2939.66 587.77 定期报告 2016-09-30
2016-08-15 2928.07 440.27 定期报告 2016-08-01
2016-08-09 2928.07 437.77 定期报告 2016-06-30
2016-05-10 2897.92 137.75 定期报告 2016-03-31
2016-03-15 2882.50 437.77
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From December 31, 2014 to December 31, 2015 Conversion of Series A to common stock Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of options Issuance of common stock Issuance of common stock to consultants
2015-12-31
2015-12-21 2872.11 未披露 定期报告 2015-12-15
2015-11-09 2392.92 437.77 定期报告 2015-09-30
2015-08-10 2278.89 未披露 定期报告 2015-08-07
2015-08-10 2378.89 440.27 定期报告 2015-06-30
2015-05-11 2372.99 440.27 定期报告 2015-03-31
2015-04-08 2362.77 440.25 定期报告 2015-03-20
2015-03-18 2354.63 未披露 定期报告 2015-03-06
2015-03-18 2227.73 440.27
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from December 31, 2013 to December 31, 2014 Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options Issuance of common stock Issuance of common stock, net of issuance costs of $111 Conversion of Series A to common stock Conversion of Series C super dividend convertible preferred stock to common stock
2014-12-31
2014-11-10 2212.36 440.27 定期报告 2014-09-30
2014-08-07 2204.34 未披露 定期报告 2014-08-05
2014-08-07 2203.48 440.27 定期报告 2014-06-30
2014-05-13 2190.83 未披露 定期报告 2014-05-09
2014-05-13 2190.62 445.27 定期报告 2014-03-31
2014-03-21 2193.28 未披露 定期报告 2014-03-18
2014-03-21 1838.69 445.27
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from December 31, 2012 to December 31, 2013 Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options Issuance of common stock, net of issuance costs of $111 Conversion of Series A to common stock Conversion of Series C super dividend convertible preferred stock to common stock
2013-12-31
2013-11-12 1831.20 未披露 定期报告 2013-11-08
2013-11-12 1765.10 456.27
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from December 31, 2012 to September 30, 2013 Conversion of Series C to common stock Issuance of common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of options Issuance of common stock upon exercise of warrants
2013-09-30
2013-08-14 1687.82 未披露 定期报告 2013-08-13
2013-08-14 1629.96 456.27
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from December 31, 2012 to June 30, 2013 Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Conversion of Series C to common stock Issuance of common stock upon exercise of options
2013-06-30
2013-05-10 1625.15 未披露 定期报告 2013-05-09
2013-05-10 1619.04 456.27
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from December 31, 2012 to March 31, 2013 Accretion of Series B redeemable convertible preferred stock Accretion of beneficial conversion feature for Series B-2 Conversion of Series C to common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of options
2013-03-31
2013-03-29 1610.91 未披露 定期报告 2013-03-27
2013-03-29 1606.09 456.27
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from December 31, 2011 to December 31, 2012 Issuance of common stock and warrants, net of issuance costs of $1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock to consultants Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
2012-12-31
2012-11-09 1596.64 456.27
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from December 31, 2011 to September 30, 2012 Issuance of common stock and warrants, net of issuance costs of $1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock to a consultant Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
2012-09-30
2012-08-10 1581.93 456.27
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from December 31, 2011 to June 30, 2012 Issuance of common stock and warrants, net of issuance costs of$1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 redeedmable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock to a consultant Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
2012-06-30
2012-05-11 1572.10 未披露 定期报告 2012-05-10
2012-05-11 1567.06 456.27
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From December 31, 2011 to March 31, 2012 Issuance of common stock and warrants, net of issuance costs of $1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
2012-03-31
2012-03-30 1559.99 未披露 定期报告 2012-03-29
2012-03-30 1291.95 456.27
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from December 31, 2010 to December 31, 2011 Conversion of Series A to common stock Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of restricted common stock Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options Conversion of Series C to common stock
2011-12-31
From March 31, 2026 to June 30, 2026 Exercise of common stock options Issuance of common stock
From December 31,2025 to March 31,2026 Series A 12% convertible preferred stock dividend Issuance of common stock from exercise of stock options Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense, net of shares forfeited to cover tax withholding Conversion of Series A preferred to common stock
From December 31, 2024 to December 31, 2025 Conversion of Series A convertible preferred to common stock Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants Issuance of common stock from exercise of stock options Issuance of common stock Stock-based compensation expense
From June 30, 2025 to September 30, 2025 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Exercise of common stock options Issuance of common stock
From March 31, 2025 to June 30, 2025 Conversion of Series A convertible preferred to common stock Exercise of common stock options Issuance of common stock
From December 31, 2024 to March 31, 2025 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense, net of shares forfeited to cover tax withholding
From December 31, 2023 to December 31, 2024 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants Issuance of common stock from exercise of stock options, net of shares withheld for exercise Issuance of common stock from restricted stock units Stock-based compensation expense
From June 30, 2024 to September 30, 2024 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend
From March 31, 2024 to June 30, 2024 Exercise of common stock options Exercise of common stock purchase warrants
From December 31, 2023 to March 31, 2024 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Exercise of stock options Stock-based compensation expense, net of shares forfeited to cover tax withholding
From December 31, 2022 to December 31, 2023 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Conversion of Series A Convertible Preferred to common Issuance of common stock from exercise of warrants Stock-based compensation expense
From June 30, 2023 to September 30, 2023 Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants Series A 12% convertible preferred stock dividend
From December 31, 2022 to March 31, 2023 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense
From December 31, 2021 to December 31, 2022 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Conversion of Series A Convertible Preferred to common Stock-based compensation expense
From June 30, 2022 to September 30, 2022 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend
From March 31, 2022 to June 30, 2022 Issuance of common stock from conversion of Series A convertible preferred stock
From December 31, 2021 to March 31, 2022 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Stock-based compensation expense
From December 31, 2020 to December 31, 2021 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Issuance of common stock for warrant exercises Issuance of common stock for stock option exercises Stock-based compensation expense
From June 30, 2021 to September 30, 2021 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock from exercise of warrants and options
From March 31, 2021 to June 30, 2021 Issuance of common stock Issuance of common stock from exercise of warrants and options
From December 31, 2020 To March 31, 2021 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock for exercise of options Stock-based compensation expense
From December 31, 2019 to October 1, 2020 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Conversion of Series A Convertible Preferred to common Issuance of common stock for stock option exercises Stock-based compensation expense
From June 30, 2020 to September 30, 2020 Issuance of common stock for conversion of Series A 12% Convertible Preferred Stock Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock for conversion of Series A 12% Convertible Preferred Stock
From March 31, 2020 to June 30, 2020 Issuance of common stock
From December 31, 2019 to March 31, 2020 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock for exercise of options Stock-based compensation expense
From December 31, 2018 to December 31, 2019 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Conversion of Series B Convertible Preferred to common Issuance of common stock for warrant exercises Issuance of common stock for stock option exercises
from June 30, 2019 to September 30, 2019 Series A 12% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock
from March 31, 2019 to June 30,2019 Issuance of common stock Issuance of common stock for exercise of warrants and options
From December 31, 2018 to March 31, 2019 Issuance of common stock Conversion of Series B Convertible Preferred to common Issuance of common stock for exercise of warrants and options
From December 31, 2017 to December 31, 2018 Series A 12% convertible preferred stock dividend Series B-1 12% convertible preferred stock dividend Series B-2 12% convertible preferred stock dividend Series B-3 8% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Issuance of common stock for warrant exercises Issuance of common stock for services Issuance of common stock for stock option exercises Issuance of common stock from Series A conversion
from December 31, 2016 to December 31, 2017 Series A 12% convertible preferred stock dividend Series B-1 12% convertible preferred stock dividend Series B-2 12% convertible preferred stock dividend Series B-3 8% convertible preferred stock dividend Series C super dividend redeemable convertible preferred stock dividend Issuance of common stock Issuance of common stock and warrants in private placements Issuance of common stock for services Issuance of restricted common stock to directors
From December 31, 2015 to December 31, 2016 Reclassification of Series B-1 and B-2 convertible stock to stockholders’ equity upon elimination of redemption feature Issuance of Series B-3 8% convertible preferred stock Series A 12% convertible preferred stock dividend Series B-1 12% convertible preferred stock dividend Series B-2 12% convertible preferred stock dividend Series B-3 8% convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock and warrants in private placements Issuance of common stock Issuance of common stock upon vesting of stock grants to directors
From December 31, 2014 to December 31, 2015 Conversion of Series A to common stock Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of options Issuance of common stock Issuance of common stock to consultants
from December 31, 2013 to December 31, 2014 Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options Issuance of common stock Issuance of common stock, net of issuance costs of $111 Conversion of Series A to common stock Conversion of Series C super dividend convertible preferred stock to common stock
from December 31, 2012 to December 31, 2013 Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options Issuance of common stock, net of issuance costs of $111 Conversion of Series A to common stock Conversion of Series C super dividend convertible preferred stock to common stock
from December 31, 2012 to September 30, 2013 Conversion of Series C to common stock Issuance of common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of options Issuance of common stock upon exercise of warrants
from December 31, 2012 to June 30, 2013 Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Conversion of Series C to common stock Issuance of common stock upon exercise of options
from December 31, 2012 to March 31, 2013 Accretion of Series B redeemable convertible preferred stock Accretion of beneficial conversion feature for Series B-2 Conversion of Series C to common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of options
from December 31, 2011 to December 31, 2012 Issuance of common stock and warrants, net of issuance costs of $1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock to consultants Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
from December 31, 2011 to September 30, 2012 Issuance of common stock and warrants, net of issuance costs of $1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock to a consultant Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
from December 31, 2011 to June 30, 2012 Issuance of common stock and warrants, net of issuance costs of$1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 redeedmable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock to a consultant Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
From December 31, 2011 to March 31, 2012 Issuance of common stock and warrants, net of issuance costs of $1,597,000 Issuance of shares related to reverse split of common stock Series A 12% convertible preferred stock dividend Series B-1 redeemable convertible preferred stock dividend Series B-2 redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options
from December 31, 2010 to December 31, 2011 Conversion of Series A to common stock Series A 12% convertible preferred stock dividend Series B-1 12% redeemable convertible preferred stock dividend Series B-2 12% redeemable convertible preferred stock dividend Series C super dividend convertible preferred stock dividend Issuance of restricted common stock Issuance of common stock upon exercise of warrants Issuance of common stock upon exercise of options Conversion of Series C to common stock