XML 25 R19.htm IDEA: XBRL DOCUMENT
v3.25.1

Capital Stock | 3 Months Ended
--- | ---
Apr. 30, 2025
Equity [Abstract] |
Capital Stock | 10. Capital Stock Preference shares There were no preference shares issued and outstanding as of April 30, 2025 and January 31, 2025, respectively. Ordinary shares In the first quarter of fiscal year 2026, the Company added 524,549 shares to the ordinary shares reserved for issuance, pursuant to an “evergreen” provision contained in the Amended and Restated 2012 Employee Stock Purchase Plan, or ESPP. Pursuant to such provision, for each fiscal year, the number of ordinary shares reserved for issuance under the ESPP is automatically increased by a number equal to the lesser of (i) 1,500,000 ordinary shares, (ii) one and one quarter percent (1.25%) of the aggregate number of ordinary shares outstanding on February 1st of each fiscal year, or (iii) an amount determined by the Company’s Board of Directors or a duly authorized committee of the Board of Directors. As of April 30, 2025 and January 31, 2025, the following ordinary shares were reserved for future issuance under the Company’s equity plans and employee stock purchase plan:
|  | As of |
|  | April 30, 2025 |  |  | January 31, 2025 |
Shares reserved for options, restricted stock and restricted stock units under equity plans |  |  | 4,616,524 |  |  |  | 4,991,570 |
Shares reserved for employee stock purchase plan |  |  | 4,062,385 |  |  |  | 3,636,591 |
Share repurchase program During the three months ended April 30, 2025, the Company repurchased a total of 24,152 shares for approximately $1.0 million in cash. As of April 30, 2025, there was approximately $48.0 million available for repurchases under the current repurchase program through June 30, 2025. Repurchases may be made from time-to-time through open market purchases, 10b5-1 plans or privately negotiated transactions subject to market conditions, applicable legal requirements and other relevant factors. The repurchase program does not obligate the Company to acquire any particular amount of ordinary shares, and it may be suspended at any time at the Company’s discretion. The repurchase program is funded using the Company’s working capital and any repurchased shares are recorded as authorized but unissued shares.

X
- Definition The entire disclosure of an entity's capital stock, shares repurchased, and shares reserved for future issuance. + References No definition available. + Details
Name: | amba_CapitalStockTextBlock
Namespace Prefix: | amba_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration