股本结构
单位：万股
| 公告日期 | 2025-10-31 | 2025-10-31 | 2025-08-01 | 2025-08-01 | 2025-06-25 | 2025-05-22 |
|---|---|---|---|---|---|---|
| 证券总股本 | 18511.90 | 18511.16 | 18504.05 | 18494.20 | 18492.54 | 18490.12 |
| 普通股本 | 18511.90 | 18511.16 | 18504.05 | 18494.20 | 18492.54 | 18490.12 |
| 优先股 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 |
| 其他 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 | 未披露 |
| 变动日期 | 2025-10-27 | 2025-09-26 | 2025-07-28 | 2025-06-27 | 2025-06-11 | 2025-05-19 |
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 |
|---|---|---|---|---|
| 2025-10-31 | 18511.90 | 未披露 | 定期报告 | 2025-10-27 |
| 2025-10-31 | 18511.16 | 未披露 |
更多>>
From June 27, 2025 to September 26, 2025
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
|
2025-09-26 |
| 2025-08-01 | 18504.05 | 未披露 | 定期报告 | 2025-07-28 |
| 2025-08-01 | 18494.20 | 未披露 |
更多>>
From March 28, 2025 to June 27, 2025
Stock-based compensation, net of forfeitures and restricted stock vested
|
2025-06-27 |
| 2025-06-25 | 18492.54 | 未披露 | 定期报告 | 2025-06-11 |
| 2025-05-22 | 18490.12 | 未披露 | 定期报告 | 2025-05-19 |
| 2025-05-22 | 18428.66 | 未披露 |
更多>>
From March 29, 2024 to March 28, 2025
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
Issuance of common stock, net of underwriting discounts
Repurchases of common stock
|
2025-03-28 |
| 2025-01-31 | 18412.50 | 未披露 | 定期报告 | 2025-01-27 |
| 2025-01-31 | 18404.28 | 未披露 |
更多>>
From September 27, 2024 to December 27, 2024
Stock-based compensation, net of forfeitures and restricted stock vested
|
2024-12-27 |
| 2024-11-01 | 18398.39 | 未披露 | 定期报告 | 2024-10-28 |
| 2024-11-01 | 18398.32 | 未披露 |
更多>>
From June 28, 2024 to September 27, 2024
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
Issuance of common stock, net of underwriting discounts
Repurchases of common stock
|
2024-09-27 |
| 2024-08-02 | 19392.05 | 未披露 | 定期报告 | 2024-07-29 |
| 2024-07-26 | 18390.32 | 未披露 |
更多>>
Common stock offered 25,000,000 shares by the company
The Underwriters purchase up to an additional 3,750,000 shares of Common Stock
On July 23, 2024 Allegro MicroSystems, Inc. repurchase from Sanken in a privately negotiated transaction 38,767,315 shares of common stock
|
2024-07-26 |
| 2024-07-23 | 19392.05 | 未披露 | 定期报告 | 2024-07-18 |
| 2024-08-02 | 19383.66 | 未披露 |
更多>>
From March 29, 2024 to June 28, 2024
Stock-based compensation, net of forfeitures and restricted stock vested
|
2024-06-28 |
| 2024-06-26 | 19378.43 | 未披露 | 定期报告 | 2024-06-12 |
| 2024-05-23 | 19374.81 | 未披露 | 定期报告 | 2024-05-20 |
| 2024-05-23 | 19316.46 | 未披露 |
更多>>
From March 31, 2023 to March 29, 2024
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
|
2024-03-29 |
| 2024-02-06 | 19312.58 | 未披露 | 定期报告 | 2024-02-02 |
| 2024-02-06 | 19304.77 | 未披露 |
更多>>
From September 29, 2023 to December 29, 2023
Stock-based compensation, net of forfeitures and restricted stock vested
|
2023-12-29 |
| 2023-11-06 | 19247.38 | 未披露 | 定期报告 | 2023-11-01 |
| 2023-11-06 | 19246.97 | 未披露 |
更多>>
From June 30, 2023 to September 29, 2023
Stock-based compensation, net of forfeitures
|
2023-09-29 |
| 2023-08-04 | 19237.64 | 未披露 | 定期报告 | 2023-08-01 |
| 2023-08-04 | 19237.18 | 未披露 |
更多>>
From March 31, 2023 to June 30, 2023
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
|
2023-06-30 |
| 2023-06-21 | 19220.86 | 未披露 | 定期报告 | 2023-06-08 |
| 2023-05-25 | 19175.70 | 未披露 | 定期报告 | 2023-05-08 |
| 2023-05-25 | 19175.43 | 未披露 |
更多>>
From March 25, 2022 to March 31, 2023
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
|
2023-03-31 |
| 2023-02-01 | 19150.83 | 未披露 | 定期报告 | 2023-01-23 |
| 2023-02-01 | 19143.59 | 未披露 |
更多>>
From September 23, 2022 to December 23, 2022
Stock-based compensation, net of forfeitures
|
2022-12-23 |
| 2022-10-31 | 19130.81 | 未披露 |
更多>>
From June 24, 2022 to September 23, 2022
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
|
2022-09-23 |
| 2022-08-01 | 19126.96 | 未披露 | 定期报告 | 2022-07-22 |
| 2022-08-01 | 19118.02 | 未披露 |
更多>>
From March 25, 2022 to June 24, 2022
Stock-based compensation, net of forfeitures
|
2022-06-24 |
| 2022-06-22 | 19080.34 | 未披露 | 定期报告 | 2022-06-09 |
| 2022-05-18 | 19050.06 | 未披露 | 定期报告 | 2022-05-06 |
| 2022-05-18 | 19047.36 | 未披露 |
更多>>
From March 26, 2021 to March 25, 2022
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
|
2022-03-25 |
| 2022-02-02 | 18991.38 | 未披露 | 定期报告 | 2022-01-19 |
| 2022-02-02 | 18979.71 | 未披露 |
更多>>
From March 26, 2021 to December 24, 2021
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
|
2021-12-24 |
| 2021-10-29 | 18970.26 | 未披露 |
更多>>
From June 25, 2021 to September 24, 2021
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
|
2021-09-24 |
| 2021-07-30 | 18964.65 | 未披露 | 定期报告 | 2021-07-21 |
| 2021-07-30 | 18958.16 | 未披露 |
更多>>
From March 26, 2021 to June 25, 2021
Stock-based compensation, net of forfeitures
|
2021-06-25 |
| 2021-07-02 | 18959.00 | 未披露 | 定期报告 | 2021-06-09 |
| 2021-05-19 | 18959.32 | 未披露 | 定期报告 | 2021-05-10 |
| 2021-05-19 | 18958.82 | 未披露 |
更多>>
From March 27, 2020 to March 26, 2021
Issuance of Class L shares, net of forfeitures
Conversion of Class A and Class L common stock into common stock in connection with the IPO
Repurchase of Class A and Class L common stock to cover related taxes
Stock-based compensation
Issuance of common stock in connection with IPO, net of underwriting discounts and other offering costs
Conversion of Class A and Class L common stock into common stock in connection with the IPO
|
2021-03-26 |
| 2021-02-09 | 18943.17 | 未披露 |
更多>>
1.Common stock offered by the selling stockholders 17,500,000 shares.
2.The number of shares of common stock to be outstanding after this offering is based on 189,431,726 shares of common stock outstanding as of December 25, 2020.
|
2021-02-09 |
| 2021-02-02 | 18943.37 | 未披露 | 定期报告 | 2021-02-01 |
| 2021-02-02 | 18943.17 | 未披露 |
更多>>
From September 25, 2020 to December 25, 2020
Issuance of common stock in connection with IPO, net of underwriting discounts and other offering costs
Conversion of Class A and Class L common stock into common stock in connection with the IPO
Repurchase of Class A and Class L common stock to cover related taxes
|
2020-12-25 |
| 2020-10-30 | 18943.18 | 未披露 |
更多>>
1.Common stock offered by the company 25,000,000 shares.
2.The number of shares of common stock to be outstanding after this offering is based on an assumed 164,431,766 shares of common stock outstanding as of September 25, 2020
|
2020-10-29 |
From June 27, 2025 to September 26, 2025
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
From March 28, 2025 to June 27, 2025
Stock-based compensation, net of forfeitures and restricted stock vested
From March 29, 2024 to March 28, 2025
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
Issuance of common stock, net of underwriting discounts
Repurchases of common stock
From September 27, 2024 to December 27, 2024
Stock-based compensation, net of forfeitures and restricted stock vested
From June 28, 2024 to September 27, 2024
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
Issuance of common stock, net of underwriting discounts
Repurchases of common stock
Common stock offered 25,000,000 shares by the company
The Underwriters purchase up to an additional 3,750,000 shares of Common Stock
On July 23, 2024 Allegro MicroSystems, Inc. repurchase from Sanken in a privately negotiated transaction 38,767,315 shares of common stock
From March 29, 2024 to June 28, 2024
Stock-based compensation, net of forfeitures and restricted stock vested
From March 31, 2023 to March 29, 2024
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures and restricted stock vested
From September 29, 2023 to December 29, 2023
Stock-based compensation, net of forfeitures and restricted stock vested
From June 30, 2023 to September 29, 2023
Stock-based compensation, net of forfeitures
From March 31, 2023 to June 30, 2023
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
From March 25, 2022 to March 31, 2023
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
From September 23, 2022 to December 23, 2022
Stock-based compensation, net of forfeitures
From June 24, 2022 to September 23, 2022
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
From March 25, 2022 to June 24, 2022
Stock-based compensation, net of forfeitures
From March 26, 2021 to March 25, 2022
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
From March 26, 2021 to December 24, 2021
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
From June 25, 2021 to September 24, 2021
Employee stock purchase plan issuances
Stock-based compensation, net of forfeitures
From March 26, 2021 to June 25, 2021
Stock-based compensation, net of forfeitures
From March 27, 2020 to March 26, 2021
Issuance of Class L shares, net of forfeitures
Conversion of Class A and Class L common stock into common stock in connection with the IPO
Repurchase of Class A and Class L common stock to cover related taxes
Stock-based compensation
Issuance of common stock in connection with IPO, net of underwriting discounts and other offering costs
Conversion of Class A and Class L common stock into common stock in connection with the IPO
1.Common stock offered by the selling stockholders 17,500,000 shares.
2.The number of shares of common stock to be outstanding after this offering is based on 189,431,726 shares of common stock outstanding as of December 25, 2020.
From September 25, 2020 to December 25, 2020
Issuance of common stock in connection with IPO, net of underwriting discounts and other offering costs
Conversion of Class A and Class L common stock into common stock in connection with the IPO
Repurchase of Class A and Class L common stock to cover related taxes
1.Common stock offered by the company 25,000,000 shares.
2.The number of shares of common stock to be outstanding after this offering is based on an assumed 164,431,766 shares of common stock outstanding as of September 25, 2020