Astera Labs Director Manuel Alba Discloses $50.8M Stock Sale Under Rule 10b5-1 Plan

Insider Transaction Overview

On September 1, 2026, Manuel Alba, a Director of Astera Labs, Inc. ($ALAB), executed a series of open-market sales totaling 183,000 shares of Common Stock for an aggregate value of approximately $50.76 million.

Transaction Details

• Entities Transacting:
  • Alba 2003 Living Trust: Sold 150,000 shares across multiple tranches at weighted average prices ranging from $277.32 to $288.95 per share.
  • Casa Alameda 2007, LLC: Sold 33,000 shares across multiple tranches at corresponding price ranges.
• Aggregate Consideration: ~$50,763,676.31
• Effective Weighted Average Price: ~$277.40 per share
• Plan Details: All transactions were executed automatically under a pre-established Rule 10b5-1 trading plan adopted on May 22, 2026.

Post-Transaction Holdings

Following the transactions, Manuel Alba maintains beneficial ownership of 1,385,712 shares across multiple holdings:

• Alba 2003 Living Trust: 1,124,498 shares (Indirect)
• Casa Alameda 2007, LLC: 253,863 shares (Indirect)
• Spouse: 5,000 shares (Indirect)
• Direct Ownership: 2,351 shares

Key Takeaways

While the aggregate transaction value is substantial ($50.8M), the sales were executed pursuant to a pre-arranged Rule 10b5-1 trading plan. The reporting person retains a major equity stake of nearly 1.39 million shares in the company.