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Stockholders' Equity | 12 Months Ended
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Mar. 31, 2026
Stockholders' Equity Note [Abstract] |
Stockholders’ Equity | Stockholders’ Equity Common stock As of March 31, 2026 and 2025, the Company’s certificate of incorporation, as amended and restated, authorized the Company to issue up to 150,000,000 shares of common stock, par value $0.001 per share. The Company had reserved for common stock for the exercise of outstanding stock options and the vesting of restricted share units, the number of shares remaining available for grant under the Company’s 2018 Omnibus Incentive Compensation Plan and the Company’s Employee Stock Purchase Plan (see Note 10) and the exercise of the outstanding warrants to purchase shares of common stock as follows:
| March 31, 2026 | March 31, 2025
Stock options, issued and outstanding | 11,785,458 |  | 10,214,878 |
Restricted and performance stock units | 5,508,882 |  | 3,611,774 |
Stock options and restricted stock units, future issuance | 1,569,457 |  | 2,119,283 |
Employee stock purchase plan, available for future grants | 4,102,399 |  | 3,405,175 |
Pre-IPO warrants to purchase common stock | — |  | 497,344 |
Pre-funded warrants | 14,058,153 |  | 14,058,153 |
Total shares of common stock reserved for future issuance | 37,024,349 |  | 33,906,607 |
Undesignated preferred stock As of March 31, 2026 and 2025, the Company’s certificate of incorporation, as amended and restated, authorized the Company to issue up to 10,000,000 shares of undesignated preferred stock, par value $0.001 per share. There were no undesignated preferred shares issued or outstanding as of March 31, 2026 and 2025. ATM program On August 3, 2023, the Company and Leerink Partners LLC (the "Current Agent") entered into a sales agreement, which was subsequently amended on May 16, 2024, November 25, 2024 and May 22, 2025 (as so amended, the "2023 Sales Agreement"). Under the 2023 Sales Agreement, the Company may sell, from time to time, at its option, up to an aggregate of $100.0 million of share of the Company's common stock, $0.001 par value shares (the "Shares"), through the Current Agent, as the Company's sales agent. Any Shares to be offered and sold under the 2023 Sales Agreement will be issued and sold (i) by methods deemed to be an “at the market offering” (“ATM”) as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended, or if authorized by the Company, in negotiated transactions or block trades, and (ii) pursuant to a registration statement on Form S-3 filed by the Company with the Securities and Exchange Commission on November 6, 2025, which became effective in accordance with the provisions of Section 8(a) of the Securities Act of 1933, as may be amended from time to time, for an offering of various securities, including shares of the Company’s common stock, preferred stock, debt securities, warrants and/or units for sale to the public in one or more public offerings. Subject to the terms of the 2023 Sales Agreement, the Current Agent will use reasonable efforts to sell the Shares from time to time, based upon the Company’s instructions (including any price, time or size limits or other customary parameters or conditions the Company may impose). The Company will pay the Current Agent a commission of up to 3.0% of the gross proceeds from the sale of the Shares. The Company has also agreed to provide the Current Agent with customary indemnification rights. During the year ended March 31, 2026, pursuant to the 2023 Sales Agreement, the Company issued and sold an aggregate of 4,019,975 shares of its common stock, resulting in net proceeds of $31.1 million, with $67.9 million left to sell under the Agreement. During the year ended March 31, 2025, the Company did not issue or sell any shares under the 2023 Sales Agreement. The Company cannot provide any assurances that it will issue any additional Shares pursuant to the 2023 Sales Agreement. Equity offerings On June 14, 2024, the Company completed a private placement transaction (the "Private Placement") pursuant to which the Company sold (a) 5,668,937 shares of the Company's common stock, at an offering price of $8.82, and (b) in lieu of common stock to certain investors, pre-funded warrants to purchase 5,669,578 shares of the Company's common stock at an offering price of $8.819 per warrant (the "June 2024 Pre-Funded Warrants"). The Company received aggregate net proceeds in the Private Placement of approximately $96.7 million after deducting placement agent fees and other offering expenses payable by the Company of approximately $3.3 million. On November 25, 2024, the Company completed a public offering of (a) 8,538,377 shares of the Company’s common stock, inclusive of the Underwriters fully exercised 30-day option to purchase up to 1,615,377 additional shares of the Company's common stock at a public offering price of $13.00 per share, and (b) pre-funded warrants to purchase 3,846,184 shares of the Company’s common stock at a public offering price of $12.9999 per warrant (the "December 2024 Pre-Funded Warrants"). The Company received aggregate net proceeds of approximately $156.0 million after deducting fees and expenses of approximately $5.0 million. Pre-funded Warrants The Company's pre-funded warrants are exercisable at any time after the date of issuance. Unless otherwise modified by a holder of a pre-funded warrant, no holder may exercise a pre-funded warrant (i) if such holder, together with its affiliates, would beneficially own more than 9.99% (or, in the case of the December 2024 Pre-Funded Warrants, 4.99%) of the number of shares of our common stock outstanding immediately after giving effect to such exercise, or (ii) if the combined voting power of our securities beneficially owned by such holder, together with its affiliates, would exceed 9.99% (or, in the case of the December 2024 Pre-Funded Warrants, 4.99%) of the combined voting power of all of our securities then outstanding immediately after giving effect to the exercise of such pre-funded warrants, as such percentage ownership is determined in accordance with the terms of the pre-funded warrants. A holder of the June 2024 Pre-funded Warrants may increase or decrease this percentage to any other percentage not in excess of 9.99%, whereas a holder of the Company's other Pre-funded Warrants, may increase or decrease this percentage up to 19.99%, in each case, by providing at least 61 days’ prior notice to the Company. The 14,058,153 shares of the Company's common stock underlying the pre-funded warrants issued by the Company are not included in the number of issued and outstanding shares of the Company’s common stock outstanding as reported on the consolidated balance sheet, though they are included in the Company's annual pool increase calculation as well as the weighted average outstanding common stock in the calculation of basic and diluted net loss per share, as noted below in Note 11. During the year ended March 31, 2026, one pre-IPO warrant holder exercised 248,672 of the Company's pre-funded warrants for an exercise price of $1.01 per pre-funded warrant. In addition, a second holder of the Company's pre-IPO warrants exercised 248,672 of the Company's pre-funded warrants for an exercise price of $1.01 per pre-funded warrant. As a result of the exercises, the Company issued 497,344 shares of Common Stock in exchange thereof. During the year ended March 31, 2025, a holder of the Company's pre-funded warrants exercised 739,225 of its pre-funded warrants for an exercise price of $0.001 per pre-funded warrant and the Company issued 739,225 shares of Common Stock in exchange thereof.

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