ALAB

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From March 31,2026 to June 30,2026 Issuance of common stock upon exercise of stock options Issuance of common stock upon exercise of warrants Issuance of common stock upon vesting of restricted and performance stock units Shares issued under employee stock purchase plan

From December 31, 2025 to March 31, 2026 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units

From December 31, 2024 to December 31, 2025 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units Shares issued under employee stock purchase plan Shares issued related to acquisition

From June 30, 2025 to September 30, 2025 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units

From March 31, 2025 to June 30, 2025 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units Shares issued under employee stock purchase plan

From December 31, 2024 to March 31, 2025 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units

From December 31, 2023 to December 31, 2024 Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units Shares of common stock withheld related to net settlement of restricted stock units Repurchase of common stock upon termination Conversion of redeemable convertible preferred stock into common stock in connection with initial public offering Shares issued under employee stock purchase plan

From June 30, 2024 to September 30, 2024 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units

From March 31, 2024 to June 30, 2024 Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units

From December 31, 2023 to March 31, 2024 Conversion of redeemable convertible preferred stock into common stock in connection with initial public offering Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions Issuance of common stock upon exercise of stock options and vesting of early exercised stock options Issuance of common stock upon vesting of restricted stock units Shares of common stock withheld related to net settlement of restricted stock units Repurchase of common stock upon termination

Astera Labs, Inc. completed its IPO of 22,770,000 shares of Common Stock at an initial public offering price of $36.00 per share, 19,758,903 of which were sold by the Company, including 2,970,000 shares sold by the Company pursuant to the full exercise of the underwriters' option to purchase additional shares.

1.Common stock offered 16,788,903 shares by the company 2.The number of shares of common stock that will be outstanding after this offering is based on 135,714,105 shares of common stock outstanding as of December 31, 2023