6,000,000 Shares

Common Stock Offered by the Selling Stockholders

This prospectus relates to the proposed resale from time to time of up to 6,000,000 shares, or the Shares, of our common stock, par value $0.0001 per share, or the common stock, by the selling stockholders named herein, together with any additional selling stockholders listed in a prospectus supplement (together with any of such stockholders' transferees, pledgees, donees or successors), which consist of (i) 2,900,000 shares of our common stock held by the selling stockholders and (ii) 3,100,000 shares of our common stock issuable upon the exercise of outstanding pre-funded warrants, or the Pre-Funded Warrants, to purchase shares of our common stock held by certain of the selling stockholders. We will not receive any proceeds from the sale of the shares offered by this prospectus, except the exercise price of $0.0001 per share of any of the Pre-Funded Warrants exercised for cash.

The selling stockholders acquired the Shares in a private placement transaction that closed on March 17, 2026, or the Private Placement. We are filing this Registration Statement on Form S-3, of which this prospectus forms a part, to fulfill our contractual obligations with the selling stockholders to provide for the resale by the selling stockholders of the Shares. See "Selling Stockholders" beginning on page 11 of this prospectus for more information about the selling stockholders. The registration of the Shares to which this prospectus relates does not require the selling stockholders to sell any of their Shares, including any shares of common stock issuable upon the exercise of Pre-Funded Warrants.

We are not offering any Shares under this prospectus and will not receive any proceeds from the sale or other disposition of the Shares covered hereby; however, we will receive proceeds from the exercise of the Pre-Funded Warrants. See "Use of Proceeds" beginning on page 10 of this prospectus.

The selling stockholders may offer and sell or otherwise dispose of the Shares described in this prospectus from time to time through public or private transactions at prevailing market prices, at prices related to prevailing market prices or at privately negotiated prices. The selling stockholders will bear all selling commissions applicable to the sales of Shares and all fees and expenses of legal counsel for the selling stockholders, subject to certain specified exceptions. We will bear all other costs, expenses, and fees in connection with the registration of the Shares. See the section titled "Plan of Distribution" for more information about how the selling stockholders may sell or dispose of their Shares.

Our common stock is listed on the New York Stock Exchange under the trading symbol "ANRO." On April 9, 2026, the closing price of our common stock was $22.40 per share.